Draco v1.5.6 release.

.cmake-format.py

@@ -17,7 +17,7 @@ with section('parse'):
               'POST_LINK_JS_SOURCES': '*',
               'FEATURES': '*',
           },
-          'pargs': 0
+          'pargs': 0,
       },
       'draco_add_executable': {
           'kwargs': {
@@ -32,7 +32,7 @@ with section('parse'):
               'OBJLIB_DEPS': '*',
               'LIB_DEPS': '*',
           },
-          'pargs': 0
+          'pargs': 0,
       },
       'draco_add_library': {
           'kwargs': {
@@ -49,21 +49,21 @@ with section('parse'):
               'LIB_DEPS': '*',
               'PUBLIC_INCLUDES': '*',
           },
-          'pargs': 0
+          'pargs': 0,
       },
       'draco_generate_emscripten_glue': {
           'kwargs': {
               'INPUT_IDL': '*',
               'OUTPUT_PATH': '*',
           },
-          'pargs': 0
+          'pargs': 0,
       },
       'draco_get_required_emscripten_flags': {
           'kwargs': {
               'FLAG_LIST_VAR_COMPILER': '*',
               'FLAG_LIST_VAR_LINKER': '*',
           },
-          'pargs': 0
+          'pargs': 0,
       },
       'draco_option': {
           'kwargs': {
@@ -71,7 +71,37 @@ with section('parse'):
               'HELPSTRING': '*',
               'VALUE': '*',
           },
-          'pargs': 0
+          'pargs': 0,
+      },
+      # Rules for built in CMake commands and those from dependencies.
+      'list': {
+          'kwargs': {
+              'APPEND': '*',
+              'FILTER': '*',
+              'FIND': '*',
+              'GET': '*',
+              'INSERT': '*',
+              'JOIN': '*',
+              'LENGTH': '*',
+              'POP_BACK': '*',
+              'POP_FRONT': '*',
+              'PREPEND': '*',
+              'REMOVE_DUPLICATES': '*',
+              'REMOVE_ITEM': '*',
+              'REVERSE': '*',
+              'SORT': '*',
+              'SUBLIST': '*',
+              'TRANSFORM': '*',
+          },
+      },
+      'protobuf_generate': {
+        'kwargs': {
+            'IMPORT_DIRS': '*',
+            'LANGUAGE': '*',
+            'OUT_VAR': '*',
+            'PROTOC_OUT_DIR': '*',
+            'PROTOS': '*',
+        },
       },
   }
 

.github/workflows/ci.yml

@@ -105,8 +105,8 @@ jobs:
               cmake .. -G "Unix Makefiles" \
                 -DBUILD_SHARED_LIBS=ON \
                 -DCMAKE_BUILD_TYPE=Release \
-                -DCMAKE_C_COMPILER=gcc \
-                -DCMAKE_CXX_COMPILER=g++ \
+                -DCMAKE_C_COMPILER=gcc-10 \
+                -DCMAKE_CXX_COMPILER=g++-10 \
                 -DDRACO_TESTS=ON
             cmake_build_command: cmake --build . -- -j2
             draco_test_command: ./draco_tests
@@ -116,32 +116,8 @@ jobs:
               cmake .. -G "Unix Makefiles" \
                 -DBUILD_SHARED_LIBS=ON \
                 -DCMAKE_BUILD_TYPE=Release \
-                -DCMAKE_C_COMPILER=gcc \
-                -DCMAKE_CXX_COMPILER=g++ \
-                -DDRACO_TESTS=ON \
-                -DDRACO_TRANSCODER_SUPPORTED=ON
-            cmake_build_command: cmake --build . -- -j2
-            draco_test_command: ./draco_tests
-
-          - test_name: ubuntu22-make-clang14-release-static
-            os: ubuntu-22.04
-            cmake_configure_command: |-
-              cmake .. -G "Unix Makefiles" \
-                -DBUILD_SHARED_LIBS=OFF \
-                -DCMAKE_BUILD_TYPE=Release \
-                -DCMAKE_C_COMPILER=clang-14 \
-                -DCMAKE_CXX_COMPILER=clang++-14 \
-                -DDRACO_TESTS=ON
-            cmake_build_command: cmake --build . -- -j2
-            draco_test_command: ./draco_tests
-          - test_name: ubuntu22-make-clang14-release-static-with-transcoder
-            os: ubuntu-22.04
-            cmake_configure_command: |-
-              cmake .. -G "Unix Makefiles" \
-                -DBUILD_SHARED_LIBS=OFF \
-                -DCMAKE_BUILD_TYPE=Release \
-                -DCMAKE_C_COMPILER=clang-14 \
-                -DCMAKE_CXX_COMPILER=clang++-14 \
+                -DCMAKE_C_COMPILER=gcc-10 \
+                -DCMAKE_CXX_COMPILER=g++-10 \
                 -DDRACO_TESTS=ON \
                 -DDRACO_TRANSCODER_SUPPORTED=ON
             cmake_build_command: cmake --build . -- -j2
@@ -153,8 +129,8 @@ jobs:
               cmake .. -G "Unix Makefiles" \
                 -DBUILD_SHARED_LIBS=OFF \
                 -DCMAKE_BUILD_TYPE=Release \
-                -DCMAKE_C_COMPILER=gcc \
-                -DCMAKE_CXX_COMPILER=g++ \
+                -DCMAKE_C_COMPILER=gcc-10 \
+                -DCMAKE_CXX_COMPILER=g++-10 \
                 -DDRACO_TESTS=ON
             cmake_build_command: cmake --build . -- -j2
             draco_test_command: ./draco_tests
@@ -164,8 +140,8 @@ jobs:
               cmake .. -G "Unix Makefiles" \
                 -DBUILD_SHARED_LIBS=OFF \
                 -DCMAKE_BUILD_TYPE=Release \
-                -DCMAKE_C_COMPILER=gcc \
-                -DCMAKE_CXX_COMPILER=g++ \
+                -DCMAKE_C_COMPILER=gcc-10 \
+                -DCMAKE_CXX_COMPILER=g++-10 \
                 -DDRACO_TESTS=ON \
                 -DDRACO_TRANSCODER_SUPPORTED=ON
             cmake_build_command: cmake --build . -- -j2
@@ -189,8 +165,7 @@ jobs:
                 -DDRACO_TESTS=ON \
                 -DDRACO_TRANSCODER_SUPPORTED=ON
             cmake_build_command: cmake --build . --config Release -- -m:2
-            # TODO(https://github.com/google/draco/issues/938): Flaking on this target.
-            draco_test_command: Release/draco_tests --gtest_filter=-GltfDecoderTest.TestLoadUnsupportedTexCoordAttributes
+            draco_test_command: Release/draco_tests
 
           - test_name: windows-msvc-release-static
             os: windows-2019
@@ -210,8 +185,7 @@ jobs:
                 -DDRACO_TESTS=ON \
                 -DDRACO_TRANSCODER_SUPPORTED=ON
             cmake_build_command: cmake --build . --config Release -- -m:2
-            # TODO(https://github.com/google/draco/issues/938): Flaking on this target.
-            draco_test_command: Release/draco_tests --gtest_filter=-GltfDecoderTest.TestLoadUnsupportedTexCoordAttributes
+            draco_test_command: Release/draco_tests
 
           - test_name: windows-make-release-shared
             os: windows-2019
@@ -235,8 +209,7 @@ jobs:
                 -DDRACO_TESTS=ON \
                 -DDRACO_TRANSCODER_SUPPORTED=ON
             cmake_build_command: cmake --build . -- -j2
-            # TODO(https://github.com/google/draco/issues/938): Flaking on this target.
-            draco_test_command: ./draco_tests --gtest_filter=-GltfDecoderTest.TestLoadUnsupportedTexCoordAttributes
+            draco_test_command: ./draco_tests
 
           - test_name: windows-make-release-static
             os: windows-2019
@@ -260,8 +233,7 @@ jobs:
                 -DDRACO_TESTS=ON \
                 -DDRACO_TRANSCODER_SUPPORTED=ON
             cmake_build_command: cmake --build . -- -j2
-            # TODO(https://github.com/google/draco/issues/938): Flaking on this target.
-            draco_test_command: ./draco_tests --gtest_filter=-GltfDecoderTest.TestLoadUnsupportedTexCoordAttributes
+            draco_test_command: ./draco_tests
 
     name: test-${{ matrix.test_name }}
     runs-on: ${{ matrix.os }}

LICENSE

@@ -250,3 +250,42 @@ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.
 
 For more information, please refer to <http://unlicense.org>
+
+#ifdef DRACO_INTERNAL
+--------------------------------------------------------------------------------
+Files: draco2/evaluation/tools/*
+
+BSD 3-Clause Clear License
+The Clear BSD License
+
+Copyright (c) 2021, Alliance for Open Media
+
+All rights reserved.
+
+- Redistribution and use in source and binary forms, with or without
+  modification, are permitted (subject to the limitations in the disclaimer
+  below) provided that the following conditions are met:
+
+- Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright notice, this
+  list of conditions and the following disclaimer in the documentation and/or
+  other materials provided with the distribution.
+
+Neither the name of the Alliance for Open Media nor the names of its
+contributors may be used to endorse or promote products derived from this
+software without specific prior written permission.
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS
+LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endif

README.md

@@ -14,6 +14,16 @@ delays can result in transient errors that can be difficult to diagnose when
 new Draco releases are launched. To avoid the issue pin your sites to a
 versioned release.
 
+### Version 1.5.6 release:
+* Using the versioned www.gstatic.com WASM and Javascript decoders continues
+  to be recommended. To use v1.5.6, use this URL:
+  * https://www.gstatic.com/draco/versioned/decoders/1.5.6/*
+* The CMake flag DRACO_DEBUG_MSVC_WARNINGS has been replaced with
+  DRACO_DEBUG_COMPILER_WARNINGS, and the behavior has changed. It is now a
+  boolean flag defined in draco_options.cmake.
+* Bug fixes.
+* Security fixes.
+
 ### Version 1.5.5 release:
 * Using the versioned www.gstatic.com WASM and Javascript decoders continues
   to be recommended. To use v1.5.5, use this URL:
@@ -254,9 +264,9 @@ will output usage and options.
 Encoding Tool
 -------------
 
-`draco_encoder` will read OBJ, STL or PLY files as input, and output Draco-encoded
-files. We have included Stanford's [Bunny] mesh for testing. The basic command
-line looks like this:
+`draco_encoder` will read OBJ, STL or PLY files as input, and output
+Draco-encoded files. We have included Stanford's [Bunny] mesh for testing. The
+basic command line looks like this:
 
 ~~~~~ bash
 ./draco_encoder -i testdata/bun_zipper.ply -o out.drc
@@ -309,8 +319,8 @@ and denser point clouds.
 Decoding Tool
 -------------
 
-`draco_decoder` will read Draco files as input, and output OBJ, STL or PLY files.
-The basic command line looks like this:
+`draco_decoder` will read Draco files as input, and output OBJ, STL or PLY
+files. The basic command line looks like this:
 
 ~~~~~ bash
 ./draco_decoder -i in.drc -o out.obj

cmake/draco_build_definitions.cmake

@@ -31,10 +31,6 @@ macro(set_draco_target)
     endif()
     set(draco_plugin_dependency draco_static)
   endif()
-
-  if(BUILD_SHARED_LIBS)
-    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
-  endif()
 endmacro()
 
 # Configures flags and sets build system globals.
@@ -60,7 +56,7 @@ macro(draco_set_build_definitions)
   # passed to libtool.
   #
   # We set DRACO_SOVERSION = [c-a].a.r
-  set(LT_CURRENT 7)
+  set(LT_CURRENT 8)
   set(LT_REVISION 0)
   set(LT_AGE 0)
   math(EXPR DRACO_SOVERSION_MAJOR "${LT_CURRENT} - ${LT_AGE}")
@@ -70,21 +66,20 @@ macro(draco_set_build_definitions)
   unset(LT_AGE)
 
   list(APPEND draco_include_paths "${draco_root}" "${draco_root}/src"
-       "${draco_build}")
-
-  if(DRACO_ABSL)
-    list(APPEND draco_include_paths "${draco_root}/third_party/abseil-cpp")
-  endif()
+              "${draco_build}")
 
   if(DRACO_TRANSCODER_SUPPORTED)
     draco_setup_eigen()
     draco_setup_filesystem()
     draco_setup_tinygltf()
+
+
   endif()
 
 
   list(APPEND draco_defines "DRACO_CMAKE=1"
-       "DRACO_FLAGS_SRCDIR=\"${draco_root}\"" "DRACO_FLAGS_TMPDIR=\"/tmp\"")
+              "DRACO_FLAGS_SRCDIR=\"${draco_root}\""
+              "DRACO_FLAGS_TMPDIR=\"/tmp\"")
 
   if(MSVC OR WIN32)
     list(APPEND draco_defines "_CRT_SECURE_NO_DEPRECATE=1" "NOMINMAX=1")
@@ -92,37 +87,22 @@ macro(draco_set_build_definitions)
     if(BUILD_SHARED_LIBS)
       set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
     endif()
+  endif()
 
-    if(MSVC AND NOT DRACO_DEBUG_MSVC_WARNINGS)
-      # Silence some excessively noisy MSVC warnings when not actively seeking
-      # to address them. These are harmless and serve only to make the build
-      # output extremely verbose. To enable these warnings set the MSVC warning
-      # level to 4, or define DRACO_DEBUG_MSVC_WARNINGS on the CMake command
-      # line when configuring Draco.
-
-      # warning C4018: '<operator>': signed/unsigned mismatch.
-      list(APPEND draco_msvc_cxx_flags /w44018)
-
-      # warning C4146: unary minus operator applied to unsigned type, result
-      # still unsigned
-      list(APPEND draco_msvc_cxx_flags /w44146)
-
-      # warning C4244: 'return': conversion from '<type>' to '<type>', possible
-      # loss of data.
-      list(APPEND draco_msvc_cxx_flags /w44244)
-
-      # warning C4267: 'initializing' conversion from '<type>' to '<type>',
-      # possible loss of data.
-      list(APPEND draco_msvc_cxx_flags /w44267)
-
-      # warning C4804: '<operator>': unsafe use of type '<type>' in operation.
-      list(APPEND draco_msvc_cxx_flags /w44804)
-    endif()
-  else()
+  if(NOT MSVC)
     if(${CMAKE_SIZEOF_VOID_P} EQUAL 8)
       # Ensure 64-bit platforms can support large files.
       list(APPEND draco_defines "_LARGEFILE_SOURCE" "_FILE_OFFSET_BITS=64")
     endif()
+
+    if(NOT DRACO_DEBUG_COMPILER_WARNINGS)
+      if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+        list(APPEND draco_clang_cxx_flags
+                    "-Wno-implicit-const-int-float-conversion")
+      else()
+        list(APPEND draco_base_cxx_flags "-Wno-deprecated-declarations")
+      endif()
+    endif()
   endif()
 
   if(ANDROID)

cmake/draco_dependencies.cmake

@@ -106,19 +106,15 @@ macro(draco_setup_googletest)
     set(gtest_path "${draco_root}/third_party/googletest")
   endif()
 
-  list(
-    APPEND
-    draco_test_include_paths
-    ${draco_include_paths}
-    "${gtest_path}/include"
-    "${gtest_path}/googlemock"
-    "${gtest_path}/googletest/include"
-    "${gtest_path}/googletest")
+  list(APPEND draco_test_include_paths ${draco_include_paths}
+              "${gtest_path}/include" "${gtest_path}/googlemock"
+              "${gtest_path}/googletest/include" "${gtest_path}/googletest")
 
   list(APPEND draco_gtest_all "${gtest_path}/googletest/src/gtest-all.cc")
   list(APPEND draco_gtest_main "${gtest_path}/googletest/src/gtest_main.cc")
 endmacro()
 
+
 # Determines the location of TinyGLTF and updates the build configuration
 # accordingly.
 macro(draco_setup_tinygltf)

cmake/draco_emscripten.cmake

@@ -58,7 +58,7 @@ macro(draco_get_required_emscripten_flags)
     # what are supposedly link-only flags sent with compile commands, but then
     # proceeds to produce broken code if the warnings are heeded.
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER}
-         "-Wno-unused-command-line-argument")
+                "-Wno-unused-command-line-argument")
 
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER} "-Wno-almost-asm")
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER} "--memory-init-file" "0")
@@ -71,7 +71,7 @@ macro(draco_get_required_emscripten_flags)
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER} "-sMODULARIZE=1")
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER} "-sFILESYSTEM=0")
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER}
-         "-sEXPORTED_FUNCTIONS=[\"_free\",\"_malloc\"]")
+                "-sEXPORTED_FUNCTIONS=[\"_free\",\"_malloc\"]")
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER} "-sPRECISE_F32=1")
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER} "-sNODEJS_CATCH_EXIT=0")
     list(APPEND ${em_FLAG_LIST_VAR_COMPILER} "-sNODEJS_CATCH_REJECTION=0")

cmake/draco_flags.cmake

@@ -99,8 +99,8 @@ macro(draco_test_cxx_flag)
   # are passed as a list it will remove the list separators, and attempt to run
   # a compile command using list entries concatenated together as a single
   # argument. Avoid the problem by forcing the argument to be a string.
-  draco_set_and_stringify(SOURCE_VARS all_cxx_flags DEST all_cxx_flags)
-  check_cxx_compiler_flag("${all_cxx_flags}" draco_all_cxx_flags_pass)
+  draco_set_and_stringify(SOURCE_VARS all_cxx_flags DEST all_cxx_flags_string)
+  check_cxx_compiler_flag("${all_cxx_flags_string}" draco_all_cxx_flags_pass)
 
   if(cxx_test_FLAG_REQUIRED AND NOT draco_all_cxx_flags_pass)
     draco_die("Flag test failed for required flag(s): "

cmake/draco_install.cmake

@@ -23,10 +23,10 @@ include(GNUInstallDirs)
 # Sets up the draco install targets. Must be called after the static library
 # target is created.
 macro(draco_setup_install_target)
-  set(bin_path "${CMAKE_INSTALL_FULL_BINDIR}")
-  set(data_path "${CMAKE_INSTALL_FULL_DATAROOTDIR}")
-  set(includes_path "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
-  set(libs_path "${CMAKE_INSTALL_FULL_LIBDIR}")
+  set(bin_path "${CMAKE_INSTALL_BINDIR}")
+  set(data_path "${CMAKE_INSTALL_DATAROOTDIR}")
+  set(includes_path "${CMAKE_INSTALL_INCLUDEDIR}")
+  set(libs_path "${CMAKE_INSTALL_LIBDIR}")
 
   foreach(file ${draco_sources})
     if(file MATCHES "h$")

cmake/draco_options.cmake

@@ -127,6 +127,10 @@ macro(draco_set_default_options)
     NAME DRACO_TRANSCODER_SUPPORTED
     HELPSTRING "Enable the Draco transcoder."
     VALUE OFF)
+  draco_option(
+    NAME DRACO_DEBUG_COMPILER_WARNINGS
+    HELPSTRING "Turn on more warnings."
+    VALUE OFF)
   draco_check_deprecated_options()
 endmacro()
 
@@ -231,6 +235,8 @@ macro(draco_set_optional_features)
   if(DRACO_TRANSCODER_SUPPORTED)
     draco_enable_feature(FEATURE "DRACO_TRANSCODER_SUPPORTED")
   endif()
+
+
 endmacro()
 
 # Macro that handles tracking of Draco preprocessor symbols for the purpose of
@@ -282,8 +288,56 @@ function(draco_generate_features_h)
     file(APPEND "${draco_features_file_name}.new" "#define ${feature}\n")
   endforeach()
 
+  if(MSVC)
+    if(NOT DRACO_DEBUG_COMPILER_WARNINGS)
+      file(APPEND "${draco_features_file_name}.new"
+           "// Enable DRACO_DEBUG_COMPILER_WARNINGS at CMake generation \n"
+           "// time to remove these pragmas.\n")
+
+      # warning C4018: '<operator>': signed/unsigned mismatch.
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4018)\n")
+
+      # warning C4146: unary minus operator applied to unsigned type, result
+      # still unsigned
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4146)\n")
+
+      # warning C4244: 'return': conversion from '<type>' to '<type>', possible
+      # loss of data.
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4244)\n")
+
+      # warning C4267: 'initializing' conversion from '<type>' to '<type>',
+      # possible loss of data.
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4267)\n")
+
+      # warning C4305: 'context' : truncation from 'type1' to 'type2'.
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4305)\n")
+
+      # warning C4661: 'identifier' : no suitable definition provided for
+      # explicit template instantiation request.
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4661)\n")
+
+      # warning C4800: Implicit conversion from 'type' to bool. Possible
+      # information loss.
+      # Also, in older MSVC releases:
+      # warning C4800: 'type' : forcing value to bool 'true' or 'false'
+      # (performance warning).
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4800)\n")
+
+      # warning C4804: '<operator>': unsafe use of type '<type>' in operation.
+      file(APPEND "${draco_features_file_name}.new"
+           "#pragma warning(disable:4804)\n")
+    endif()
+  endif()
+
   file(APPEND "${draco_features_file_name}.new"
-       "\n#endif  // DRACO_FEATURES_H_")
+       "\n#endif  // DRACO_FEATURES_H_\n")
 
   # Will replace ${draco_features_file_name} only if the file content has
   # changed. This prevents forced Draco rebuilds after CMake runs.

cmake/draco_sanitizer.cmake

@@ -26,7 +26,7 @@ macro(draco_configure_sanitizer)
       if(DRACO_SANITIZE MATCHES "cfi")
         list(APPEND SAN_CXX_FLAGS "-flto" "-fno-sanitize-trap=cfi")
         list(APPEND SAN_LINKER_FLAGS "-flto" "-fno-sanitize-trap=cfi"
-             "-fuse-ld=gold")
+                    "-fuse-ld=gold")
       endif()
 
       if(${CMAKE_SIZEOF_VOID_P} EQUAL 4 AND DRACO_SANITIZE MATCHES

cmake/draco_targets.cmake

@@ -108,7 +108,8 @@ macro(draco_add_executable)
   endif()
 
   add_executable(${exe_NAME} ${exe_SOURCES})
-  target_compile_features(${exe_NAME} PRIVATE cxx_std_11)
+
+    target_compile_features(${exe_NAME} PUBLIC cxx_std_11)
 
   if(NOT EMSCRIPTEN)
     set_target_properties(${exe_NAME} PROPERTIES VERSION ${DRACO_VERSION})
@@ -161,12 +162,7 @@ macro(draco_add_executable)
   endif()
 
   if(exe_LIB_DEPS)
-    unset(exe_static)
-    if("${CMAKE_EXE_LINKER_FLAGS} ${DRACO_EXE_LINKER_FLAGS}" MATCHES "static")
-      set(exe_static ON)
-    endif()
-
-    if(exe_static AND CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
+    if(CMAKE_CXX_COMPILER_ID MATCHES "^Clang|^GNU")
       # Third party dependencies can introduce dependencies on system and test
       # libraries. Since the target created here is an executable, and CMake
       # does not provide a method of controlling order of link dependencies,
@@ -174,6 +170,10 @@ macro(draco_add_executable)
       # ensure that dependencies of third party targets can be resolved when
       # those dependencies happen to be resolved by dependencies of the current
       # target.
+      # TODO(tomfinegan): For portability use LINK_GROUP with RESCAN instead of
+      # directly (ab)using compiler/linker specific flags once CMake v3.24 is in
+      # wider use. See:
+      # https://cmake.org/cmake/help/latest/manual/cmake-generator-expressions.7.html#genex:LINK_GROUP
       list(INSERT exe_LIB_DEPS 0 -Wl,--start-group)
       list(APPEND exe_LIB_DEPS -Wl,--end-group)
     endif()
@@ -290,8 +290,16 @@ macro(draco_add_library)
   endif()
 
   add_library(${lib_NAME} ${lib_TYPE} ${lib_SOURCES})
-  target_compile_features(${lib_NAME} PUBLIC cxx_std_11)
+
+    target_compile_features(${lib_NAME} PUBLIC cxx_std_11)
+
   target_include_directories(${lib_NAME} PUBLIC $<INSTALL_INTERFACE:include>)
+
+  if(BUILD_SHARED_LIBS)
+    # Enable PIC for all targets in shared configurations.
+    set_target_properties(${lib_NAME} PROPERTIES POSITION_INDEPENDENT_CODE ON)
+  endif()
+
   if(lib_SOURCES)
     draco_process_intrinsics_sources(TARGET ${lib_NAME} SOURCES ${lib_SOURCES})
   endif()

cmake/draco_test_config.h.cmake

@@ -23,5 +23,6 @@
 
 #define DRACO_TEST_DATA_DIR "${DRACO_TEST_DATA_DIR}"
 #define DRACO_TEST_TEMP_DIR "${DRACO_TEST_TEMP_DIR}"
+#define DRACO_TEST_ROOT_DIR "${DRACO_TEST_ROOT_DIR}"
 
 #endif  // DRACO_TESTING_DRACO_TEST_CONFIG_H_

cmake/draco_tests.cmake

@@ -24,80 +24,84 @@ set(draco_factory_test_sources
     "${draco_src_root}/io/file_reader_factory_test.cc"
     "${draco_src_root}/io/file_writer_factory_test.cc")
 
+list(
+  APPEND draco_test_common_sources
+         "${draco_src_root}/core/draco_test_base.h"
+         "${draco_src_root}/core/draco_test_utils.cc"
+         "${draco_src_root}/core/draco_test_utils.h"
+         "${draco_src_root}/core/status.cc")
+
 list(
   APPEND
-  draco_test_sources
-  "${draco_src_root}/animation/keyframe_animation_encoding_test.cc"
-  "${draco_src_root}/animation/keyframe_animation_test.cc"
-  "${draco_src_root}/attributes/point_attribute_test.cc"
-  "${draco_src_root}/compression/attributes/point_d_vector_test.cc"
-  "${draco_src_root}/compression/attributes/prediction_schemes/prediction_scheme_normal_octahedron_canonicalized_transform_test.cc"
-  "${draco_src_root}/compression/attributes/prediction_schemes/prediction_scheme_normal_octahedron_transform_test.cc"
-  "${draco_src_root}/compression/attributes/sequential_integer_attribute_encoding_test.cc"
-  "${draco_src_root}/compression/bit_coders/rans_coding_test.cc"
-  "${draco_src_root}/compression/decode_test.cc"
-  "${draco_src_root}/compression/encode_test.cc"
-  "${draco_src_root}/compression/entropy/shannon_entropy_test.cc"
-  "${draco_src_root}/compression/entropy/symbol_coding_test.cc"
-  "${draco_src_root}/compression/mesh/mesh_edgebreaker_encoding_test.cc"
-  "${draco_src_root}/compression/mesh/mesh_encoder_test.cc"
-  "${draco_src_root}/compression/point_cloud/point_cloud_kd_tree_encoding_test.cc"
-  "${draco_src_root}/compression/point_cloud/point_cloud_sequential_encoding_test.cc"
-  "${draco_src_root}/core/buffer_bit_coding_test.cc"
-  "${draco_src_root}/core/draco_test_base.h"
-  "${draco_src_root}/core/draco_test_utils.cc"
-  "${draco_src_root}/core/draco_test_utils.h"
-  "${draco_src_root}/core/math_utils_test.cc"
-  "${draco_src_root}/core/quantization_utils_test.cc"
-  "${draco_src_root}/core/status.cc"
-  "${draco_src_root}/core/status_test.cc"
-  "${draco_src_root}/core/vector_d_test.cc"
-  "${draco_src_root}/io/file_reader_test_common.h"
-  "${draco_src_root}/io/file_utils_test.cc"
-  "${draco_src_root}/io/file_writer_utils_test.cc"
-  "${draco_src_root}/io/stdio_file_reader_test.cc"
-  "${draco_src_root}/io/stdio_file_writer_test.cc"
-  "${draco_src_root}/io/obj_decoder_test.cc"
-  "${draco_src_root}/io/obj_encoder_test.cc"
-  "${draco_src_root}/io/ply_decoder_test.cc"
-  "${draco_src_root}/io/ply_reader_test.cc"
-  "${draco_src_root}/io/stl_decoder_test.cc"
-  "${draco_src_root}/io/stl_encoder_test.cc"
-  "${draco_src_root}/io/point_cloud_io_test.cc"
-  "${draco_src_root}/mesh/mesh_are_equivalent_test.cc"
-  "${draco_src_root}/mesh/mesh_cleanup_test.cc"
-  "${draco_src_root}/mesh/triangle_soup_mesh_builder_test.cc"
-  "${draco_src_root}/metadata/metadata_encoder_test.cc"
-  "${draco_src_root}/metadata/metadata_test.cc"
-  "${draco_src_root}/point_cloud/point_cloud_builder_test.cc"
-  "${draco_src_root}/point_cloud/point_cloud_test.cc")
+    draco_test_sources
+    "${draco_src_root}/animation/keyframe_animation_encoding_test.cc"
+    "${draco_src_root}/animation/keyframe_animation_test.cc"
+    "${draco_src_root}/attributes/point_attribute_test.cc"
+    "${draco_src_root}/compression/attributes/point_d_vector_test.cc"
+    "${draco_src_root}/compression/attributes/prediction_schemes/prediction_scheme_normal_octahedron_canonicalized_transform_test.cc"
+    "${draco_src_root}/compression/attributes/prediction_schemes/prediction_scheme_normal_octahedron_transform_test.cc"
+    "${draco_src_root}/compression/attributes/sequential_integer_attribute_encoding_test.cc"
+    "${draco_src_root}/compression/bit_coders/rans_coding_test.cc"
+    "${draco_src_root}/compression/decode_test.cc"
+    "${draco_src_root}/compression/encode_test.cc"
+    "${draco_src_root}/compression/entropy/shannon_entropy_test.cc"
+    "${draco_src_root}/compression/entropy/symbol_coding_test.cc"
+    "${draco_src_root}/compression/mesh/mesh_edgebreaker_encoding_test.cc"
+    "${draco_src_root}/compression/mesh/mesh_encoder_test.cc"
+    "${draco_src_root}/compression/point_cloud/point_cloud_kd_tree_encoding_test.cc"
+    "${draco_src_root}/compression/point_cloud/point_cloud_sequential_encoding_test.cc"
+    "${draco_src_root}/core/buffer_bit_coding_test.cc"
+    "${draco_src_root}/core/math_utils_test.cc"
+    "${draco_src_root}/core/quantization_utils_test.cc"
+    "${draco_src_root}/core/status_test.cc"
+    "${draco_src_root}/core/vector_d_test.cc"
+    "${draco_src_root}/io/file_reader_test_common.h"
+    "${draco_src_root}/io/file_utils_test.cc"
+    "${draco_src_root}/io/file_writer_utils_test.cc"
+    "${draco_src_root}/io/stdio_file_reader_test.cc"
+    "${draco_src_root}/io/stdio_file_writer_test.cc"
+    "${draco_src_root}/io/obj_decoder_test.cc"
+    "${draco_src_root}/io/obj_encoder_test.cc"
+    "${draco_src_root}/io/ply_decoder_test.cc"
+    "${draco_src_root}/io/ply_reader_test.cc"
+    "${draco_src_root}/io/stl_decoder_test.cc"
+    "${draco_src_root}/io/stl_encoder_test.cc"
+    "${draco_src_root}/io/point_cloud_io_test.cc"
+    "${draco_src_root}/mesh/corner_table_test.cc"
+    "${draco_src_root}/mesh/mesh_are_equivalent_test.cc"
+    "${draco_src_root}/mesh/mesh_cleanup_test.cc"
+    "${draco_src_root}/mesh/triangle_soup_mesh_builder_test.cc"
+    "${draco_src_root}/metadata/metadata_encoder_test.cc"
+    "${draco_src_root}/metadata/metadata_test.cc"
+    "${draco_src_root}/point_cloud/point_cloud_builder_test.cc"
+    "${draco_src_root}/point_cloud/point_cloud_test.cc")
 
 if(DRACO_TRANSCODER_SUPPORTED)
   list(
-    APPEND
-    draco_test_sources
-    "${draco_src_root}/animation/animation_test.cc"
-    "${draco_src_root}/io/gltf_decoder_test.cc"
-    "${draco_src_root}/io/gltf_encoder_test.cc"
-    "${draco_src_root}/io/gltf_utils_test.cc"
-    "${draco_src_root}/io/gltf_test_helper.cc"
-    "${draco_src_root}/io/gltf_test_helper.h"
-    "${draco_src_root}/io/scene_io_test.cc"
-    "${draco_src_root}/io/texture_io_test.cc"
-    "${draco_src_root}/material/material_library_test.cc"
-    "${draco_src_root}/material/material_test.cc"
-    "${draco_src_root}/metadata/property_table_test.cc"
-    "${draco_src_root}/metadata/structural_metadata_test.cc"
-    "${draco_src_root}/scene/instance_array_test.cc"
-    "${draco_src_root}/scene/light_test.cc"
-    "${draco_src_root}/scene/mesh_group_test.cc"
-    "${draco_src_root}/scene/scene_test.cc"
-    "${draco_src_root}/scene/scene_are_equivalent_test.cc"
-    "${draco_src_root}/scene/scene_utils_test.cc"
-    "${draco_src_root}/scene/trs_matrix_test.cc"
-    "${draco_src_root}/texture/texture_library_test.cc"
-    "${draco_src_root}/texture/texture_map_test.cc"
-    "${draco_src_root}/texture/texture_transform_test.cc")
+    APPEND draco_test_sources
+           "${draco_src_root}/animation/animation_test.cc"
+           "${draco_src_root}/io/gltf_decoder_test.cc"
+           "${draco_src_root}/io/gltf_encoder_test.cc"
+           "${draco_src_root}/io/gltf_utils_test.cc"
+           "${draco_src_root}/io/gltf_test_helper.cc"
+           "${draco_src_root}/io/gltf_test_helper.h"
+           "${draco_src_root}/io/scene_io_test.cc"
+           "${draco_src_root}/io/texture_io_test.cc"
+           "${draco_src_root}/material/material_library_test.cc"
+           "${draco_src_root}/material/material_test.cc"
+           "${draco_src_root}/metadata/property_table_test.cc"
+           "${draco_src_root}/metadata/structural_metadata_test.cc"
+           "${draco_src_root}/scene/instance_array_test.cc"
+           "${draco_src_root}/scene/light_test.cc"
+           "${draco_src_root}/scene/mesh_group_test.cc"
+           "${draco_src_root}/scene/scene_test.cc"
+           "${draco_src_root}/scene/scene_are_equivalent_test.cc"
+           "${draco_src_root}/scene/scene_utils_test.cc"
+           "${draco_src_root}/scene/trs_matrix_test.cc"
+           "${draco_src_root}/texture/texture_library_test.cc"
+           "${draco_src_root}/texture/texture_map_test.cc"
+           "${draco_src_root}/texture/texture_transform_test.cc")
+
 endif()
 
 macro(draco_setup_test_targets)
@@ -110,6 +114,14 @@ macro(draco_setup_test_targets)
 
     list(APPEND draco_test_defines GTEST_HAS_PTHREAD=0)
 
+    draco_add_library(
+      TEST
+      NAME draco_test_common
+      TYPE STATIC
+      SOURCES ${draco_test_common_sources}
+      DEFINES ${draco_defines} ${draco_test_defines}
+      INCLUDES ${draco_test_include_paths})
+
     draco_add_library(
       TEST
       NAME draco_gtest
@@ -128,6 +140,7 @@ macro(draco_setup_test_targets)
 
     set(DRACO_TEST_DATA_DIR "${draco_root}/testdata")
     set(DRACO_TEST_TEMP_DIR "${draco_build}/draco_test_temp")
+    set(DRACO_TEST_ROOT_DIR "${draco_root}")
     file(MAKE_DIRECTORY "${DRACO_TEST_TEMP_DIR}")
 
     # Sets DRACO_TEST_DATA_DIR and DRACO_TEST_TEMP_DIR.
@@ -136,17 +149,23 @@ macro(draco_setup_test_targets)
 
     # Create the test targets.
     draco_add_executable(
+      TEST
       NAME draco_tests
       SOURCES ${draco_test_sources}
       DEFINES ${draco_defines} ${draco_test_defines}
       INCLUDES ${draco_test_include_paths}
-      LIB_DEPS ${draco_dependency} draco_gtest draco_gtest_main)
+      LIB_DEPS ${draco_dependency} draco_gtest draco_gtest_main
+               draco_test_common)
 
     draco_add_executable(
+      TEST
       NAME draco_factory_tests
       SOURCES ${draco_factory_test_sources}
       DEFINES ${draco_defines} ${draco_test_defines}
       INCLUDES ${draco_test_include_paths}
-      LIB_DEPS ${draco_dependency} draco_gtest draco_gtest_main)
+      LIB_DEPS ${draco_dependency} draco_gtest draco_gtest_main
+               draco_test_common)
+
+
   endif()
 endmacro()

cmake/draco_variables.cmake

@@ -55,16 +55,15 @@ endmacro()
 macro(draco_dump_cmake_flag_variables)
   unset(flag_variables)
   list(APPEND flag_variables "CMAKE_CXX_FLAGS_INIT" "CMAKE_CXX_FLAGS"
-       "CMAKE_EXE_LINKER_FLAGS_INIT" "CMAKE_EXE_LINKER_FLAGS")
+              "CMAKE_EXE_LINKER_FLAGS_INIT" "CMAKE_EXE_LINKER_FLAGS")
   if(CMAKE_BUILD_TYPE)
     list(
-      APPEND
-      flag_variables
-      "CMAKE_BUILD_TYPE"
-      "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}_INIT"
-      "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}"
-      "CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE}_INIT"
-      "CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE}")
+      APPEND flag_variables
+             "CMAKE_BUILD_TYPE"
+             "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}_INIT"
+             "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}"
+             "CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE}_INIT"
+             "CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE}")
   endif()
   foreach(flag_variable ${flag_variables})
     message("${flag_variable}:${${flag_variable}}")

javascript/draco_encoder_wrapper.js

@@ -19,79 +19,79 @@ $jscomp.polyfill("String.prototype.startsWith",function(l){return l?l:function(p
 $jscomp.polyfill("Array.prototype.copyWithin",function(l){function p(m){m=Number(m);return Infinity===m||-Infinity===m?m:m|0}return l?l:function(m,r,k){var C=this.length;m=p(m);r=p(r);k=void 0===k?C:p(k);m=0>m?Math.max(C+m,0):Math.min(m,C);r=0>r?Math.max(C+r,0):Math.min(r,C);k=0>k?Math.max(C+k,0):Math.min(k,C);if(m<r)for(;r<k;)r in this?this[m++]=this[r++]:(delete this[m++],r++);else for(k=Math.min(k,C+r-m),m+=k-r;k>r;)--k in this?this[--m]=this[k]:delete this[--m];return this}},"es6","es3");
 $jscomp.typedArrayCopyWithin=function(l){return l?l:Array.prototype.copyWithin};$jscomp.polyfill("Int8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8ClampedArray.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
 $jscomp.polyfill("Uint16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float64Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
-var DracoEncoderModule=function(){var l="undefined"!==typeof document&&document.currentScript?document.currentScript.src:void 0;"undefined"!==typeof __filename&&(l=l||__filename);return function(p){function m(f){return a.locateFile?a.locateFile(f,L):L+f}function r(f){ma=f;a.HEAP8=O=new Int8Array(f);a.HEAP16=ea=new Int16Array(f);a.HEAP32=S=new Int32Array(f);a.HEAPU8=fa=new Uint8Array(f);a.HEAPU16=new Uint16Array(f);a.HEAPU32=T=new Uint32Array(f);a.HEAPF32=ha=new Float32Array(f);a.HEAPF64=new Float64Array(f)}
-function k(f){if(a.onAbort)a.onAbort(f);f="Aborted("+f+")";W(f);na=!0;f=new WebAssembly.RuntimeError(f+". Build with -sASSERTIONS for more info.");ba(f);throw f;}function C(f){try{if(f==K&&X)return new Uint8Array(X);if(ia)return ia(f);throw"both async and sync fetching of the wasm failed";}catch(b){k(b)}}function h(){if(!X&&(oa||Y)){if("function"==typeof fetch&&!K.startsWith("file://"))return fetch(K,{credentials:"same-origin"}).then(function(f){if(!f.ok)throw"failed to load wasm binary file at '"+
+var DracoEncoderModule=function(){var l="undefined"!==typeof document&&document.currentScript?document.currentScript.src:void 0;"undefined"!==typeof __filename&&(l=l||__filename);return function(p){function m(f){return a.locateFile?a.locateFile(f,L):L+f}function r(){var f=ba.buffer;a.HEAP8=O=new Int8Array(f);a.HEAP16=ea=new Int16Array(f);a.HEAP32=S=new Int32Array(f);a.HEAPU8=fa=new Uint8Array(f);a.HEAPU16=new Uint16Array(f);a.HEAPU32=T=new Uint32Array(f);a.HEAPF32=ha=new Float32Array(f);a.HEAPF64=
+new Float64Array(f)}function k(f){if(a.onAbort)a.onAbort(f);f="Aborted("+f+")";W(f);na=!0;f=new WebAssembly.RuntimeError(f+". Build with -sASSERTIONS for more info.");ca(f);throw f;}function C(f){try{if(f==K&&X)return new Uint8Array(X);if(ia)return ia(f);throw"both async and sync fetching of the wasm failed";}catch(b){k(b)}}function h(){if(!X&&(oa||Y)){if("function"==typeof fetch&&!K.startsWith("file://"))return fetch(K,{credentials:"same-origin"}).then(function(f){if(!f.ok)throw"failed to load wasm binary file at '"+
 K+"'";return f.arrayBuffer()}).catch(function(){return C(K)});if(ja)return new Promise(function(f,b){ja(K,function(c){f(new Uint8Array(c))},b)})}return Promise.resolve().then(function(){return C(K)})}function q(f){for(;0<f.length;)f.shift()(a)}function w(f){this.excPtr=f;this.ptr=f-24;this.set_type=function(b){T[this.ptr+4>>2]=b};this.get_type=function(){return T[this.ptr+4>>2]};this.set_destructor=function(b){T[this.ptr+8>>2]=b};this.get_destructor=function(){return T[this.ptr+8>>2]};this.set_refcount=
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-2]=b-1;return 1===b};this.set_adjusted_ptr=function(b){T[this.ptr+16>>2]=b};this.get_adjusted_ptr=function(){return T[this.ptr+16>>2]};this.get_exception_ptr=function(){if(pa(this.get_type()))return T[this.excPtr>>2];var b=this.get_adjusted_ptr();return 0!==b?b:this.excPtr}}function B(f){function b(){if(!ca&&(ca=!0,a.calledRun=!0,!na)){qa=!0;q(ka);ra(a);if(a.onRuntimeInitialized)a.onRuntimeInitialized();if(a.postRun)for("function"==typeof a.postRun&&(a.postRun=[a.postRun]);a.postRun.length;)sa.unshift(a.postRun.shift());
-q(sa)}}if(!(0<U)){if(a.preRun)for("function"==typeof a.preRun&&(a.preRun=[a.preRun]);a.preRun.length;)ta.unshift(a.preRun.shift());q(ta);0<U||(a.setStatus?(a.setStatus("Running..."),setTimeout(function(){setTimeout(function(){a.setStatus("")},1);b()},1)):b())}}function v(){}function D(f){return(f||v).__cache__}function I(f,b){var c=D(b),d=c[f];if(d)return d;d=Object.create((b||v).prototype);d.ptr=f;return c[f]=d}function J(f){if("string"===typeof f){for(var b=0,c=0;c<f.length;++c){var d=f.charCodeAt(c);
+2]=b-1;return 1===b};this.set_adjusted_ptr=function(b){T[this.ptr+16>>2]=b};this.get_adjusted_ptr=function(){return T[this.ptr+16>>2]};this.get_exception_ptr=function(){if(pa(this.get_type()))return T[this.excPtr>>2];var b=this.get_adjusted_ptr();return 0!==b?b:this.excPtr}}function B(){function f(){if(!da&&(da=!0,a.calledRun=!0,!na)){qa=!0;q(ka);ra(a);if(a.onRuntimeInitialized)a.onRuntimeInitialized();if(a.postRun)for("function"==typeof a.postRun&&(a.postRun=[a.postRun]);a.postRun.length;)sa.unshift(a.postRun.shift());
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+n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=V(g));return yb(t,b,c,d,e,g)};u.prototype.AddMetadataToMesh=u.prototype.AddMetadataToMesh=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return!!zb(d,b,c)};u.prototype.AddFloatAttribute=u.prototype.AddFloatAttribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&
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javascript/draco_wasm_wrapper.js

@@ -19,99 +19,99 @@ $jscomp.polyfill("String.prototype.startsWith",function(k){return k?k:function(n
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 $jscomp.typedArrayCopyWithin=function(k){return k?k:Array.prototype.copyWithin};$jscomp.polyfill("Int8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8ClampedArray.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
 $jscomp.polyfill("Uint16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float64Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
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+var DracoDecoderModule=function(){var k="undefined"!==typeof document&&document.currentScript?document.currentScript.src:void 0;"undefined"!==typeof __filename&&(k=k||__filename);return function(n){function l(e){return a.locateFile?a.locateFile(e,U):U+e}function p(e,b,c){var d=b+c;for(c=b;e[c]&&!(c>=d);)++c;if(16<c-b&&e.buffer&&va)return va.decode(e.subarray(b,c));for(d="";b<c;){var g=e[b++];if(g&128){var u=e[b++]&63;if(192==(g&224))d+=String.fromCharCode((g&31)<<6|u);else{var X=e[b++]&63;g=224==
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+I;I.prototype.__class__=I;I.__cache__={};a.DracoInt8Array=I;I.prototype.GetValue=I.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Ob(c,b)};I.prototype.size=I.prototype.size=function(){return Pb(this.ptr)};I.prototype.__destroy__=I.prototype.__destroy__=function(){Qb(this.ptr)};J.prototype=Object.create(t.prototype);J.prototype.constructor=J;J.prototype.__class__=J;J.__cache__={};a.DracoUInt8Array=J;J.prototype.GetValue=J.prototype.GetValue=function(b){var c=
+this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Rb(c,b)};J.prototype.size=J.prototype.size=function(){return Sb(this.ptr)};J.prototype.__destroy__=J.prototype.__destroy__=function(){Tb(this.ptr)};K.prototype=Object.create(t.prototype);K.prototype.constructor=K;K.prototype.__class__=K;K.__cache__={};a.DracoInt16Array=K;K.prototype.GetValue=K.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Ub(c,b)};K.prototype.size=K.prototype.size=function(){return Vb(this.ptr)};
+K.prototype.__destroy__=K.prototype.__destroy__=function(){Wb(this.ptr)};L.prototype=Object.create(t.prototype);L.prototype.constructor=L;L.prototype.__class__=L;L.__cache__={};a.DracoUInt16Array=L;L.prototype.GetValue=L.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Xb(c,b)};L.prototype.size=L.prototype.size=function(){return Yb(this.ptr)};L.prototype.__destroy__=L.prototype.__destroy__=function(){Zb(this.ptr)};M.prototype=Object.create(t.prototype);M.prototype.constructor=
+M;M.prototype.__class__=M;M.__cache__={};a.DracoInt32Array=M;M.prototype.GetValue=M.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return $b(c,b)};M.prototype.size=M.prototype.size=function(){return ac(this.ptr)};M.prototype.__destroy__=M.prototype.__destroy__=function(){bc(this.ptr)};N.prototype=Object.create(t.prototype);N.prototype.constructor=N;N.prototype.__class__=N;N.__cache__={};a.DracoUInt32Array=N;N.prototype.GetValue=N.prototype.GetValue=function(b){var c=
+this.ptr;b&&"object"===typeof b&&(b=b.ptr);return cc(c,b)};N.prototype.size=N.prototype.size=function(){return dc(this.ptr)};N.prototype.__destroy__=N.prototype.__destroy__=function(){ec(this.ptr)};y.prototype=Object.create(t.prototype);y.prototype.constructor=y;y.prototype.__class__=y;y.__cache__={};a.MetadataQuerier=y;y.prototype.HasEntry=y.prototype.HasEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return!!fc(d,b,c)};y.prototype.GetIntEntry=
+y.prototype.GetIntEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return gc(d,b,c)};y.prototype.GetIntEntryArray=y.prototype.GetIntEntryArray=function(b,c,d){var g=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);d&&"object"===typeof d&&(d=d.ptr);hc(g,b,c,d)};y.prototype.GetDoubleEntry=y.prototype.GetDoubleEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=
+c&&"object"===typeof c?c.ptr:R(c);return ic(d,b,c)};y.prototype.GetStringEntry=y.prototype.GetStringEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return h(jc(d,b,c))};y.prototype.NumEntries=y.prototype.NumEntries=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return kc(c,b)};y.prototype.GetEntryName=y.prototype.GetEntryName=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=
+c.ptr);return h(lc(d,b,c))};y.prototype.__destroy__=y.prototype.__destroy__=function(){mc(this.ptr)};m.prototype=Object.create(t.prototype);m.prototype.constructor=m;m.prototype.__class__=m;m.__cache__={};a.Decoder=m;m.prototype.DecodeArrayToPointCloud=m.prototype.DecodeArrayToPointCloud=function(b,c,d){var g=this.ptr;r.prepare();"object"==typeof b&&(b=pa(b));c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return D(nc(g,b,c,d),B)};m.prototype.DecodeArrayToMesh=m.prototype.DecodeArrayToMesh=
+function(b,c,d){var g=this.ptr;r.prepare();"object"==typeof b&&(b=pa(b));c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return D(oc(g,b,c,d),B)};m.prototype.GetAttributeId=m.prototype.GetAttributeId=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return pc(d,b,c)};m.prototype.GetAttributeIdByName=m.prototype.GetAttributeIdByName=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?
+c.ptr:R(c);return qc(d,b,c)};m.prototype.GetAttributeIdByMetadataEntry=m.prototype.GetAttributeIdByMetadataEntry=function(b,c,d){var g=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);d=d&&"object"===typeof d?d.ptr:R(d);return rc(g,b,c,d)};m.prototype.GetAttribute=m.prototype.GetAttribute=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return D(sc(d,b,c),w)};m.prototype.GetAttributeByUniqueId=m.prototype.GetAttributeByUniqueId=
+function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return D(tc(d,b,c),w)};m.prototype.GetMetadata=m.prototype.GetMetadata=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return D(uc(c,b),T)};m.prototype.GetAttributeMetadata=m.prototype.GetAttributeMetadata=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return D(vc(d,b,c),T)};m.prototype.GetFaceFromMesh=m.prototype.GetFaceFromMesh=function(b,
+c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!wc(g,b,c,d)};m.prototype.GetTriangleStripsFromMesh=m.prototype.GetTriangleStripsFromMesh=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return xc(d,b,c)};m.prototype.GetTrianglesUInt16Array=m.prototype.GetTrianglesUInt16Array=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);
+d&&"object"===typeof d&&(d=d.ptr);return!!yc(g,b,c,d)};m.prototype.GetTrianglesUInt32Array=m.prototype.GetTrianglesUInt32Array=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!zc(g,b,c,d)};m.prototype.GetAttributeFloat=m.prototype.GetAttributeFloat=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Ac(g,b,c,d)};m.prototype.GetAttributeFloatForAllPoints=
+m.prototype.GetAttributeFloatForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Bc(g,b,c,d)};m.prototype.GetAttributeIntForAllPoints=m.prototype.GetAttributeIntForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Cc(g,b,c,d)};m.prototype.GetAttributeInt8ForAllPoints=m.prototype.GetAttributeInt8ForAllPoints=
+function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Dc(g,b,c,d)};m.prototype.GetAttributeUInt8ForAllPoints=m.prototype.GetAttributeUInt8ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Ec(g,b,c,d)};m.prototype.GetAttributeInt16ForAllPoints=m.prototype.GetAttributeInt16ForAllPoints=function(b,c,d){var g=this.ptr;
+b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Fc(g,b,c,d)};m.prototype.GetAttributeUInt16ForAllPoints=m.prototype.GetAttributeUInt16ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Gc(g,b,c,d)};m.prototype.GetAttributeInt32ForAllPoints=m.prototype.GetAttributeInt32ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&
+(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Hc(g,b,c,d)};m.prototype.GetAttributeUInt32ForAllPoints=m.prototype.GetAttributeUInt32ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Ic(g,b,c,d)};m.prototype.GetAttributeDataArrayForAllPoints=m.prototype.GetAttributeDataArrayForAllPoints=function(b,c,d,g,u){var X=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&
+"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);g&&"object"===typeof g&&(g=g.ptr);u&&"object"===typeof u&&(u=u.ptr);return!!Jc(X,b,c,d,g,u)};m.prototype.SkipAttributeTransform=m.prototype.SkipAttributeTransform=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);Kc(c,b)};m.prototype.GetEncodedGeometryType_Deprecated=m.prototype.GetEncodedGeometryType_Deprecated=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Lc(c,b)};m.prototype.DecodeBufferToPointCloud=
+m.prototype.DecodeBufferToPointCloud=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return D(Mc(d,b,c),B)};m.prototype.DecodeBufferToMesh=m.prototype.DecodeBufferToMesh=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return D(Nc(d,b,c),B)};m.prototype.__destroy__=m.prototype.__destroy__=function(){Oc(this.ptr)};(function(){function b(){a.ATTRIBUTE_INVALID_TRANSFORM=Pc();a.ATTRIBUTE_NO_TRANSFORM=Qc();
+a.ATTRIBUTE_QUANTIZATION_TRANSFORM=Rc();a.ATTRIBUTE_OCTAHEDRON_TRANSFORM=Sc();a.INVALID=Tc();a.POSITION=Uc();a.NORMAL=Vc();a.COLOR=Wc();a.TEX_COORD=Xc();a.GENERIC=Yc();a.INVALID_GEOMETRY_TYPE=Zc();a.POINT_CLOUD=$c();a.TRIANGULAR_MESH=ad();a.DT_INVALID=bd();a.DT_INT8=cd();a.DT_UINT8=dd();a.DT_INT16=ed();a.DT_UINT16=fd();a.DT_INT32=gd();a.DT_UINT32=hd();a.DT_INT64=id();a.DT_UINT64=jd();a.DT_FLOAT32=kd();a.DT_FLOAT64=ld();a.DT_BOOL=md();a.DT_TYPES_COUNT=nd();a.OK=od();a.DRACO_ERROR=pd();a.IO_ERROR=qd();
+a.INVALID_PARAMETER=rd();a.UNSUPPORTED_VERSION=sd();a.UNKNOWN_VERSION=td()}za?b():oa.unshift(b)})();if("function"===typeof a.onModuleParsed)a.onModuleParsed();a.Decoder.prototype.GetEncodedGeometryType=function(b){if(b.__class__&&b.__class__===a.DecoderBuffer)return a.Decoder.prototype.GetEncodedGeometryType_Deprecated(b);if(8>b.byteLength)return a.INVALID_GEOMETRY_TYPE;switch(b[7]){case 0:return a.POINT_CLOUD;case 1:return a.TRIANGULAR_MESH;default:return a.INVALID_GEOMETRY_TYPE}};return n.ready}}();
+"object"===typeof exports&&"object"===typeof module?module.exports=DracoDecoderModule:"function"===typeof define&&define.amd?define([],function(){return DracoDecoderModule}):"object"===typeof exports&&(exports.DracoDecoderModule=DracoDecoderModule);

javascript/draco_wasm_wrapper_gltf.js

@@ -19,98 +19,98 @@ $jscomp.polyfill("String.prototype.startsWith",function(h){return h?h:function(n
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 $jscomp.typedArrayCopyWithin=function(h){return h?h:Array.prototype.copyWithin};$jscomp.polyfill("Int8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8ClampedArray.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
 $jscomp.polyfill("Uint16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float64Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
-var DracoDecoderModule=function(){var h="undefined"!==typeof document&&document.currentScript?document.currentScript.src:void 0;"undefined"!==typeof __filename&&(h=h||__filename);return function(n){function k(e){return a.locateFile?a.locateFile(e,U):U+e}function p(e,b){if(e){var c=ia;var d=e+b;for(b=e;c[b]&&!(b>=d);)++b;if(16<b-e&&c.buffer&&qa)c=qa.decode(c.subarray(e,b));else{for(d="";e<b;){var g=c[e++];if(g&128){var t=c[e++]&63;if(192==(g&224))d+=String.fromCharCode((g&31)<<6|t);else{var aa=c[e++]&
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+var DracoDecoderModule=function(){var h="undefined"!==typeof document&&document.currentScript?document.currentScript.src:void 0;"undefined"!==typeof __filename&&(h=h||__filename);return function(n){function k(e){return a.locateFile?a.locateFile(e,U):U+e}function p(e,b){if(e){var c=ia;var d=e+b;for(b=e;c[b]&&!(b>=d);)++b;if(16<b-e&&c.buffer&&ra)c=ra.decode(c.subarray(e,b));else{for(d="";e<b;){var g=c[e++];if(g&128){var t=c[e++]&63;if(192==(g&224))d+=String.fromCharCode((g&31)<<6|t);else{var aa=c[e++]&
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+L;L.prototype.GetValue=L.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Pb(c,b)};L.prototype.size=L.prototype.size=function(){return Qb(this.ptr)};L.prototype.__destroy__=L.prototype.__destroy__=function(){Rb(this.ptr)};M.prototype=Object.create(v.prototype);M.prototype.constructor=M;M.prototype.__class__=M;M.__cache__={};a.DracoUInt16Array=M;M.prototype.GetValue=M.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Sb(c,b)};
+M.prototype.size=M.prototype.size=function(){return Tb(this.ptr)};M.prototype.__destroy__=M.prototype.__destroy__=function(){Ub(this.ptr)};N.prototype=Object.create(v.prototype);N.prototype.constructor=N;N.prototype.__class__=N;N.__cache__={};a.DracoInt32Array=N;N.prototype.GetValue=N.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Vb(c,b)};N.prototype.size=N.prototype.size=function(){return Wb(this.ptr)};N.prototype.__destroy__=N.prototype.__destroy__=function(){Xb(this.ptr)};
+O.prototype=Object.create(v.prototype);O.prototype.constructor=O;O.prototype.__class__=O;O.__cache__={};a.DracoUInt32Array=O;O.prototype.GetValue=O.prototype.GetValue=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Yb(c,b)};O.prototype.size=O.prototype.size=function(){return Zb(this.ptr)};O.prototype.__destroy__=O.prototype.__destroy__=function(){$b(this.ptr)};z.prototype=Object.create(v.prototype);z.prototype.constructor=z;z.prototype.__class__=z;z.__cache__={};a.MetadataQuerier=
+z;z.prototype.HasEntry=z.prototype.HasEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return!!ac(d,b,c)};z.prototype.GetIntEntry=z.prototype.GetIntEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return bc(d,b,c)};z.prototype.GetIntEntryArray=z.prototype.GetIntEntryArray=function(b,c,d){var g=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===
+typeof c?c.ptr:R(c);d&&"object"===typeof d&&(d=d.ptr);cc(g,b,c,d)};z.prototype.GetDoubleEntry=z.prototype.GetDoubleEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return dc(d,b,c)};z.prototype.GetStringEntry=z.prototype.GetStringEntry=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return p(ec(d,b,c))};z.prototype.NumEntries=z.prototype.NumEntries=function(b){var c=this.ptr;
+b&&"object"===typeof b&&(b=b.ptr);return fc(c,b)};z.prototype.GetEntryName=z.prototype.GetEntryName=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return p(gc(d,b,c))};z.prototype.__destroy__=z.prototype.__destroy__=function(){hc(this.ptr)};m.prototype=Object.create(v.prototype);m.prototype.constructor=m;m.prototype.__class__=m;m.__cache__={};a.Decoder=m;m.prototype.DecodeArrayToPointCloud=m.prototype.DecodeArrayToPointCloud=function(b,c,d){var g=
+this.ptr;r.prepare();"object"==typeof b&&(b=Z(b));c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return B(ic(g,b,c,d),C)};m.prototype.DecodeArrayToMesh=m.prototype.DecodeArrayToMesh=function(b,c,d){var g=this.ptr;r.prepare();"object"==typeof b&&(b=Z(b));c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return B(jc(g,b,c,d),C)};m.prototype.GetAttributeId=m.prototype.GetAttributeId=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&
+(c=c.ptr);return kc(d,b,c)};m.prototype.GetAttributeIdByName=m.prototype.GetAttributeIdByName=function(b,c){var d=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);return lc(d,b,c)};m.prototype.GetAttributeIdByMetadataEntry=m.prototype.GetAttributeIdByMetadataEntry=function(b,c,d){var g=this.ptr;r.prepare();b&&"object"===typeof b&&(b=b.ptr);c=c&&"object"===typeof c?c.ptr:R(c);d=d&&"object"===typeof d?d.ptr:R(d);return mc(g,b,c,d)};m.prototype.GetAttribute=
+m.prototype.GetAttribute=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return B(nc(d,b,c),x)};m.prototype.GetAttributeByUniqueId=m.prototype.GetAttributeByUniqueId=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return B(oc(d,b,c),x)};m.prototype.GetMetadata=m.prototype.GetMetadata=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return B(pc(c,b),T)};m.prototype.GetAttributeMetadata=m.prototype.GetAttributeMetadata=
+function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return B(qc(d,b,c),T)};m.prototype.GetFaceFromMesh=m.prototype.GetFaceFromMesh=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!rc(g,b,c,d)};m.prototype.GetTriangleStripsFromMesh=m.prototype.GetTriangleStripsFromMesh=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);
+return sc(d,b,c)};m.prototype.GetTrianglesUInt16Array=m.prototype.GetTrianglesUInt16Array=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!tc(g,b,c,d)};m.prototype.GetTrianglesUInt32Array=m.prototype.GetTrianglesUInt32Array=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!uc(g,b,c,d)};m.prototype.GetAttributeFloat=m.prototype.GetAttributeFloat=
+function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!vc(g,b,c,d)};m.prototype.GetAttributeFloatForAllPoints=m.prototype.GetAttributeFloatForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!wc(g,b,c,d)};m.prototype.GetAttributeIntForAllPoints=m.prototype.GetAttributeIntForAllPoints=function(b,c,d){var g=this.ptr;
+b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!xc(g,b,c,d)};m.prototype.GetAttributeInt8ForAllPoints=m.prototype.GetAttributeInt8ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!yc(g,b,c,d)};m.prototype.GetAttributeUInt8ForAllPoints=m.prototype.GetAttributeUInt8ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=
+b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!zc(g,b,c,d)};m.prototype.GetAttributeInt16ForAllPoints=m.prototype.GetAttributeInt16ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Ac(g,b,c,d)};m.prototype.GetAttributeUInt16ForAllPoints=m.prototype.GetAttributeUInt16ForAllPoints=function(b,c,d){var g=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&
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+typeof d&&(d=d.ptr);return!!Dc(g,b,c,d)};m.prototype.GetAttributeDataArrayForAllPoints=m.prototype.GetAttributeDataArrayForAllPoints=function(b,c,d,g,t){var aa=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);g&&"object"===typeof g&&(g=g.ptr);t&&"object"===typeof t&&(t=t.ptr);return!!Ec(aa,b,c,d,g,t)};m.prototype.SkipAttributeTransform=m.prototype.SkipAttributeTransform=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);Fc(c,
+b)};m.prototype.GetEncodedGeometryType_Deprecated=m.prototype.GetEncodedGeometryType_Deprecated=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);return Gc(c,b)};m.prototype.DecodeBufferToPointCloud=m.prototype.DecodeBufferToPointCloud=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return B(Hc(d,b,c),C)};m.prototype.DecodeBufferToMesh=m.prototype.DecodeBufferToMesh=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===
+typeof c&&(c=c.ptr);return B(Ic(d,b,c),C)};m.prototype.__destroy__=m.prototype.__destroy__=function(){Jc(this.ptr)};(function(){function b(){a.ATTRIBUTE_INVALID_TRANSFORM=Kc();a.ATTRIBUTE_NO_TRANSFORM=Lc();a.ATTRIBUTE_QUANTIZATION_TRANSFORM=Mc();a.ATTRIBUTE_OCTAHEDRON_TRANSFORM=Nc();a.INVALID=Oc();a.POSITION=Pc();a.NORMAL=Qc();a.COLOR=Rc();a.TEX_COORD=Sc();a.GENERIC=Tc();a.INVALID_GEOMETRY_TYPE=Uc();a.POINT_CLOUD=Vc();a.TRIANGULAR_MESH=Wc();a.DT_INVALID=Xc();a.DT_INT8=Yc();a.DT_UINT8=Zc();a.DT_INT16=
+$c();a.DT_UINT16=ad();a.DT_INT32=bd();a.DT_UINT32=cd();a.DT_INT64=dd();a.DT_UINT64=ed();a.DT_FLOAT32=fd();a.DT_FLOAT64=gd();a.DT_BOOL=hd();a.DT_TYPES_COUNT=id();a.OK=jd();a.DRACO_ERROR=kd();a.IO_ERROR=ld();a.INVALID_PARAMETER=md();a.UNSUPPORTED_VERSION=nd();a.UNKNOWN_VERSION=od()}va?b():oa.unshift(b)})();if("function"===typeof a.onModuleParsed)a.onModuleParsed();a.Decoder.prototype.GetEncodedGeometryType=function(b){if(b.__class__&&b.__class__===a.DecoderBuffer)return a.Decoder.prototype.GetEncodedGeometryType_Deprecated(b);
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javascript/example/README.md

@@ -46,7 +46,7 @@ Create DracoLoader by setting the decoder type:
 
 ```js
 // (Optional) Change decoder source directory (defaults to
-// 'https://www.gstatic.com/draco/versioned/decoders/1.4.1/'). It is recommended
+// 'https://www.gstatic.com/draco/versioned/decoders/1.5.6/'). It is recommended
 // to always pull your Draco JavaScript and WASM decoders from this URL. Users
 // will benefit from having the Draco decoder in cache as more sites start using
 // the static URL.

javascript/example/webgl_loader_draco_advanced.html

@@ -38,7 +38,7 @@
       // It is recommended to always pull your Draco JavaScript and WASM decoders
       // from this URL. Users will benefit from having the Draco decoder in cache
       // as more sites start using the static URL.
-      dracoLoader.setDecoderPath('https://www.gstatic.com/draco/versioned/decoders/1.4.1/');
+      dracoLoader.setDecoderPath('https://www.gstatic.com/draco/versioned/decoders/1.5.6/');
 
       var camera, cameraTarget, scene, renderer;
 

javascript/npm/draco3d/README.md

@@ -6,7 +6,7 @@
 News
 =======
 
-Check out the [README](https://github.com/google/draco/blob/1.5.5/README.md)
+Check out the [README](https://github.com/google/draco/blob/1.5.6/README.md)
 file for news about this release.
 
 Description

javascript/npm/draco3d/draco_decoder_nodejs.js

@@ -19,99 +19,99 @@ $jscomp.polyfill("String.prototype.startsWith",function(k){return k?k:function(n
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 $jscomp.typedArrayCopyWithin=function(k){return k?k:Array.prototype.copyWithin};$jscomp.polyfill("Int8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint8ClampedArray.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
 $jscomp.polyfill("Uint16Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Int32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Uint32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float32Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");$jscomp.polyfill("Float64Array.prototype.copyWithin",$jscomp.typedArrayCopyWithin,"es6","es5");
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+var DracoDecoderModule=function(){var k="undefined"!==typeof document&&document.currentScript?document.currentScript.src:void 0;"undefined"!==typeof __filename&&(k=k||__filename);return function(n){function l(e){return a.locateFile?a.locateFile(e,U):U+e}function p(e,b,c){var d=b+c;for(c=b;e[c]&&!(c>=d);)++c;if(16<c-b&&e.buffer&&va)return va.decode(e.subarray(b,c));for(d="";b<c;){var g=e[b++];if(g&128){var u=e[b++]&63;if(192==(g&224))d+=String.fromCharCode((g&31)<<6|u);else{var X=e[b++]&63;g=224==
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javascript/npm/draco3d/draco_encoder_nodejs.js

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javascript/npm/draco3d/package.json

@@ -1,6 +1,6 @@
 {
   "name": "draco3d",
-  "version": "1.5.5",
+  "version": "1.5.6",
   "description": "Draco is a library for compressing and decompressing 3D geometric meshes and point clouds. It is intended to improve the storage and transmission of 3D graphics.",
   "main": "draco3d.js",
   "scripts": {

javascript/npm/draco3dgltf/README.md

@@ -24,7 +24,7 @@ Draco github glTF branch URL: https://github.com/google/draco/tree/gltf_2.0_drac
 News
 =======
 
-Check out the [README](https://github.com/google/draco/blob/1.5.5/README.md)
+Check out the [README](https://github.com/google/draco/blob/1.5.6/README.md)
 file for news about this release.
 
 NPM Package

javascript/npm/draco3dgltf/draco_decoder_gltf_nodejs.js

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javascript/npm/draco3dgltf/draco_encoder_gltf_nodejs.js

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+typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=Q(g));return ob(t,b,c,d,e,g)};x.prototype.AddInt16Attribute=x.prototype.AddInt16Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=R(g));return pb(t,b,c,d,e,g)};x.prototype.AddUInt16Attribute=x.prototype.AddUInt16Attribute=function(b,
+c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=R(g));return qb(t,b,c,d,e,g)};x.prototype.AddInt32Attribute=x.prototype.AddInt32Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=V(g));return rb(t,
+b,c,d,e,g)};x.prototype.AddUInt32Attribute=x.prototype.AddUInt32Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=V(g));return sb(t,b,c,d,e,g)};x.prototype.AddMetadata=x.prototype.AddMetadata=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return!!tb(d,b,c)};x.prototype.SetMetadataForAttribute=
+x.prototype.SetMetadataForAttribute=function(b,c,d){var e=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!ub(e,b,c,d)};x.prototype.__destroy__=x.prototype.__destroy__=function(){vb(this.ptr)};u.prototype=Object.create(v.prototype);u.prototype.constructor=u;u.prototype.__class__=u;u.__cache__={};a.MeshBuilder=u;u.prototype.AddFacesToMesh=u.prototype.AddFacesToMesh=function(b,c,d){var e=this.ptr;n.prepare();b&&"object"===typeof b&&
+(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);"object"==typeof d&&(d=V(d));return!!wb(e,b,c,d)};u.prototype.AddFloatAttributeToMesh=u.prototype.AddFloatAttributeToMesh=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=Z(g));return xb(t,b,c,d,e,g)};u.prototype.AddInt32AttributeToMesh=u.prototype.AddInt32AttributeToMesh=function(b,c,d,e,g){var t=this.ptr;
+n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=V(g));return yb(t,b,c,d,e,g)};u.prototype.AddMetadataToMesh=u.prototype.AddMetadataToMesh=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return!!zb(d,b,c)};u.prototype.AddFloatAttribute=u.prototype.AddFloatAttribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&
+(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=Z(g));return Ab(t,b,c,d,e,g)};u.prototype.AddInt8Attribute=u.prototype.AddInt8Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=Q(g));return Bb(t,b,c,d,e,g)};u.prototype.AddUInt8Attribute=u.prototype.AddUInt8Attribute=
+function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=Q(g));return Cb(t,b,c,d,e,g)};u.prototype.AddInt16Attribute=u.prototype.AddInt16Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=
+R(g));return Db(t,b,c,d,e,g)};u.prototype.AddUInt16Attribute=u.prototype.AddUInt16Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=R(g));return Eb(t,b,c,d,e,g)};u.prototype.AddInt32Attribute=u.prototype.AddInt32Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);
+d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=V(g));return Fb(t,b,c,d,e,g)};u.prototype.AddUInt32Attribute=u.prototype.AddUInt32Attribute=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);e&&"object"===typeof e&&(e=e.ptr);"object"==typeof g&&(g=V(g));return Gb(t,b,c,d,e,g)};u.prototype.AddMetadata=u.prototype.AddMetadata=function(b,c){var d=this.ptr;b&&"object"===
+typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return!!Hb(d,b,c)};u.prototype.SetMetadataForAttribute=u.prototype.SetMetadataForAttribute=function(b,c,d){var e=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Ib(e,b,c,d)};u.prototype.__destroy__=u.prototype.__destroy__=function(){Jb(this.ptr)};y.prototype=Object.create(v.prototype);y.prototype.constructor=y;y.prototype.__class__=y;y.__cache__={};a.Encoder=y;y.prototype.SetEncodingMethod=
+y.prototype.SetEncodingMethod=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);Kb(c,b)};y.prototype.SetAttributeQuantization=y.prototype.SetAttributeQuantization=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);Lb(d,b,c)};y.prototype.SetAttributeExplicitQuantization=y.prototype.SetAttributeExplicitQuantization=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===
+typeof d&&(d=d.ptr);"object"==typeof e&&(e=Z(e));g&&"object"===typeof g&&(g=g.ptr);Mb(t,b,c,d,e,g)};y.prototype.SetSpeedOptions=y.prototype.SetSpeedOptions=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);Nb(d,b,c)};y.prototype.SetTrackEncodedProperties=y.prototype.SetTrackEncodedProperties=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);Ob(c,b)};y.prototype.EncodeMeshToDracoBuffer=y.prototype.EncodeMeshToDracoBuffer=function(b,c){var d=
+this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return Pb(d,b,c)};y.prototype.EncodePointCloudToDracoBuffer=y.prototype.EncodePointCloudToDracoBuffer=function(b,c,d){var e=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return Qb(e,b,c,d)};y.prototype.GetNumberOfEncodedPoints=y.prototype.GetNumberOfEncodedPoints=function(){return Rb(this.ptr)};y.prototype.GetNumberOfEncodedFaces=y.prototype.GetNumberOfEncodedFaces=
+function(){return Sb(this.ptr)};y.prototype.__destroy__=y.prototype.__destroy__=function(){Tb(this.ptr)};A.prototype=Object.create(v.prototype);A.prototype.constructor=A;A.prototype.__class__=A;A.__cache__={};a.ExpertEncoder=A;A.prototype.SetEncodingMethod=A.prototype.SetEncodingMethod=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);Ub(c,b)};A.prototype.SetAttributeQuantization=A.prototype.SetAttributeQuantization=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===
+typeof c&&(c=c.ptr);Vb(d,b,c)};A.prototype.SetAttributeExplicitQuantization=A.prototype.SetAttributeExplicitQuantization=function(b,c,d,e,g){var t=this.ptr;n.prepare();b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);"object"==typeof e&&(e=Z(e));g&&"object"===typeof g&&(g=g.ptr);Wb(t,b,c,d,e,g)};A.prototype.SetSpeedOptions=A.prototype.SetSpeedOptions=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);
+Xb(d,b,c)};A.prototype.SetTrackEncodedProperties=A.prototype.SetTrackEncodedProperties=function(b){var c=this.ptr;b&&"object"===typeof b&&(b=b.ptr);Yb(c,b)};A.prototype.EncodeToDracoBuffer=A.prototype.EncodeToDracoBuffer=function(b,c){var d=this.ptr;b&&"object"===typeof b&&(b=b.ptr);c&&"object"===typeof c&&(c=c.ptr);return Zb(d,b,c)};A.prototype.GetNumberOfEncodedPoints=A.prototype.GetNumberOfEncodedPoints=function(){return $b(this.ptr)};A.prototype.GetNumberOfEncodedFaces=A.prototype.GetNumberOfEncodedFaces=
+function(){return ac(this.ptr)};A.prototype.__destroy__=A.prototype.__destroy__=function(){bc(this.ptr)};(function(){function b(){a.INVALID=cc();a.POSITION=dc();a.NORMAL=ec();a.COLOR=fc();a.TEX_COORD=gc();a.GENERIC=hc();a.INVALID_GEOMETRY_TYPE=ic();a.POINT_CLOUD=jc();a.TRIANGULAR_MESH=kc();a.MESH_SEQUENTIAL_ENCODING=lc();a.MESH_EDGEBREAKER_ENCODING=mc()}qa?b():ka.unshift(b)})();if("function"===typeof a.onModuleParsed)a.onModuleParsed();return p.ready}}();
 "object"===typeof exports&&"object"===typeof module?module.exports=DracoEncoderModule:"function"===typeof define&&define.amd?define([],function(){return DracoEncoderModule}):"object"===typeof exports&&(exports.DracoEncoderModule=DracoEncoderModule);

javascript/npm/draco3dgltf/package.json

@@ -1,6 +1,6 @@
 {
   "name": "draco3dgltf",
-  "version": "1.5.5",
+  "version": "1.5.6",
   "description": "This package contains a specific version of Draco 3D geometric compression library that is used for glTF Draco mesh compression extension.",
   "main": "draco3dgltf.js",
   "scripts": {

javascript/npm/draco_animation/draco-animation.js

@@ -1,11 +0,0 @@
-/**
- * @fileoverview Main file for draco-animation package.
- */
-
-var createEncoderModule = require('./draco_animation_encoder_nodejs');
-var createDecoderModule = require('./draco_animation_decoder_nodejs');
-
-module.exports = {
-  createEncoderModule,
-  createDecoderModule
-}

javascript/npm/draco_animation/draco_animation_encoding_test.js

@@ -1,178 +0,0 @@
-// Copyright 2017 The Draco Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-'use_strict';
-
-const assert = require('assert');
-const draco = require('./draco-animation');
-
-// Global variables to keep track of which modules have been intiailized.
-let encoderModuleInitialized = false;
-let decoderModuleInitialized = false;
-
-// Callback function when encoder module has been intialized.
-let dracoEncoderType = {};
-dracoEncoderType['onModuleLoaded'] = function(module) {
-  encoderModuleInitialized = true;
-  console.log('Encoder Module Initialized!');
-  moduleInitialized();
-};
-
-// Callback function when decoder module has been intialized.
-let dracoDecoderType = {};
-dracoDecoderType['onModuleLoaded'] = function(module) {
-  decoderModuleInitialized = true;
-  console.log('Decoder Module Initialized!');
-  moduleInitialized();
-};
-
-// The code to create the encoder and decoder modules is asynchronous.
-// draco will call the 'onModuleLoaded' callback when the different
-// modules have been fully initialized.
-const encoderModule = draco.createEncoderModule(dracoEncoderType);
-const decoderModule = draco.createDecoderModule(dracoDecoderType);
-
-function generateAnimationData(numKeyframes, numAnimations, numComponents) {
-  const timestamps = new Float32Array(numKeyframes);
-
-  const keyframes = new Array(numAnimations);
-  for (let i = 0; i < numAnimations; ++i) {
-    keyframes[i] = new Float32Array(numKeyframes * numComponents[i]);
-  }
-
-  for (let frameId = 0; frameId < numKeyframes; ++frameId) {
-    timestamps[frameId] = frameId;
-    for (let keyframeId = 0; keyframeId < numAnimations; ++keyframeId) {
-      for (let j = 0; j < numComponents[keyframeId]; ++j) {
-        // Set an arbitrary deterministic value.
-        keyframes[keyframeId][frameId * numComponents[keyframeId] + j] =
-            (frameId * numComponents[keyframeId] + j) * (keyframeId + 1);
-      }
-    }
-  }
-
-  const animation = {
-    timestamps : timestamps,
-    keyframes : keyframes
-  };
-
-  return animation;
-}
-
-function encodeAnimation(animation) {
-  const encoder = new encoderModule.AnimationEncoder();
-  const animationBuilder = new encoderModule.AnimationBuilder();
-  const dracoAnimation = new encoderModule.KeyframeAnimation();
-
-  // Add timestamps to animation.
-  const numKeyframes = animation.timestamps.length;
-  assert(animationBuilder.SetTimestamps(dracoAnimation, numKeyframes,
-        animation.timestamps));
-
-  // Add keyframes.
-  for (let keyframeId = 0; keyframeId < animation.keyframes.length;
-      ++keyframeId) {
-    const numComponents =
-        animation.keyframes[keyframeId].length / animation.timestamps.length;
-    assert(animationBuilder.AddKeyframes(dracoAnimation, numKeyframes,
-          numComponents, animation.keyframes[keyframeId]) == keyframeId + 1);
-  }
-
-  const encodedData = new encoderModule.DracoInt8Array();
-  encoder.SetTimestampsQuantization(16);
-  encoder.SetKeyframesQuantization(16);
-  console.log("Quantized timestamps to 16 bits.");
-  console.log("Quantized keyframes to 16 bits.");
-  const encodedLen = encoder.EncodeAnimationToDracoBuffer(dracoAnimation,
-                                                          encodedData);
-
-  encoderModule.destroy(dracoAnimation);
-  encoderModule.destroy(animationBuilder);
-  encoderModule.destroy(encoder);
-
-  assert(encodedLen > 0, "Failed encoding.");
-  console.log("Encoded size: " + encodedLen);
-
-  const outputBuffer = new ArrayBuffer(encodedLen);
-  const outputData = new Int8Array(outputBuffer);
-  for (let i = 0; i < encodedLen; ++i) {
-    const data0 = encodedData.GetValue(i);
-    outputData[i] = encodedData.GetValue(i);
-  }
-  encoderModule.destroy(encodedData);
-
-  return outputBuffer;
-}
-
-function decodeAnimation(encodedData) {
-  const buffer = new decoderModule.DecoderBuffer();
-  buffer.Init(new Int8Array(encodedData), encodedData.byteLength);
-  const decoder = new decoderModule.AnimationDecoder();
-
-  const dracoAnimation = new decoderModule.KeyframeAnimation();
-  decoder.DecodeBufferToKeyframeAnimation(buffer, dracoAnimation);
-  assert(dracoAnimation.ptr != 0, "Invalid animation.");
-
-
-  const numKeyframes = dracoAnimation.num_frames();
-
-  const timestampAttData = new decoderModule.DracoFloat32Array();
-  assert(decoder.GetTimestamps(dracoAnimation, timestampAttData));
-  const timestamps = new Float32Array(numKeyframes);
-  for (let i = 0; i < numKeyframes; ++i) {
-      timestamps[i] = timestampAttData.GetValue(i);
-  }
-
-  const numAnimations = dracoAnimation.num_animations();
-  const keyframes = new Array(numAnimations);
-  for (let keyframeId = 0; keyframeId < numAnimations; ++keyframeId) {
-    const animationAttData = new decoderModule.DracoFloat32Array();
-    // The id of keyframe attribute starts at 1.
-    assert(decoder.GetKeyframes(dracoAnimation, keyframeId + 1,
-          animationAttData));
-    keyframes[keyframeId] = new Float32Array(animationAttData.size());
-    for (let i = 0; i < animationAttData.size(); ++i) {
-      keyframes[keyframeId][i] = animationAttData.GetValue(i);
-    }
-  }
-
-  const animation = {
-    timestamps : timestamps,
-    keyframes : keyframes
-  }
-
-  console.log("Decoding successful.");
-
-  return animation;
-}
-
-function compareAnimation(animation, decodedAnimation) {
-  console.log("Comparing decoded animation data...");
-  assert(animation.timestamps.length == decodedAnimation.timestamps.length);
-  assert(animation.keyframes.length == decodedAnimation.keyframes.length);
-
-  console.log("Done.");
-}
-
-function moduleInitialized() {
-  if (encoderModuleInitialized && decoderModuleInitialized) {
-    // Create animation with 50 frames and two animations.
-    // The first animation has 3 components and the second has 4 components.
-    const animation = generateAnimationData(100, 2, [3, 4]);
-    const encodedData = encodeAnimation(animation);
-
-    const decodedAnimation = decodeAnimation(encodedData);
-    compareAnimation(animation, decodedAnimation);
-  }
-}

javascript/npm/draco_animation/package.json

@@ -1,19 +0,0 @@
-{
-  "name": "draco-animation",
-  "version": "1.0.5",
-  "description": "Draco animation is a library for compressing and decompressing 3D animations of geometric meshes.",
-  "main": "draco-animation.js",
-  "scripts": {
-    "test": "nodejs draco_animation_encoding_test.js"
-  },
-  "keywords": [
-    "compression",
-    "animation"
-  ],
-  "author": "Google Draco Team",
-  "license": "Apache-2.0",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/google/draco.git"
-  }
-}

src/draco/compression/attributes/kd_tree_attributes_decoder.cc

@@ -263,7 +263,7 @@ bool KdTreeAttributesDecoder::DecodePoints(int total_dimensionality,
                                            DecoderBuffer *in_buffer,
                                            OutIteratorT *out_iterator) {
   DynamicIntegerPointsKdTreeDecoder<level_t> decoder(total_dimensionality);
-  if (!decoder.DecodePoints(in_buffer, *out_iterator) ||
+  if (!decoder.DecodePoints(in_buffer, *out_iterator, num_expected_points) ||
       decoder.num_decoded_points() != num_expected_points) {
     return false;
   }

src/draco/compression/attributes/point_d_vector.h

@@ -16,7 +16,9 @@
 #ifndef DRACO_COMPRESSION_ATTRIBUTES_POINT_D_VECTOR_H_
 #define DRACO_COMPRESSION_ATTRIBUTES_POINT_D_VECTOR_H_
 
+#include <cstddef>
 #include <cstring>
+#include <iterator>
 #include <memory>
 #include <vector>
 
@@ -99,11 +101,17 @@ class PointDVector {
         data_(n_items * dimensionality),
         data0_(data_.data()) {}
   // random access iterator
-  class PointDVectorIterator
-      : public std::iterator<std::random_access_iterator_tag, size_t, size_t> {
+  class PointDVectorIterator {
     friend class PointDVector;
 
    public:
+    // Iterator traits expected by std libraries.
+    using iterator_category = std::random_access_iterator_tag;
+    using value_type = size_t;
+    using difference_type = size_t;
+    using pointer = PointDVector *;
+    using reference = PointDVector &;
+
     // std::iter_swap is called inside of std::partition and needs this
     // specialized support
     PseudoPointD<internal_t> operator*() const {

src/draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_tex_coords_decoder.h

@@ -165,6 +165,11 @@ bool MeshPredictionSchemeTexCoordsDecoder<DataTypeT, TransformT, MeshDataT>::
   if (num_orientations == 0) {
     return false;
   }
+  if (num_orientations > this->mesh_data().corner_table()->num_corners()) {
+    // We can't have more orientations than the maximum number of decoded
+    // values.
+    return false;
+  }
   orientations_.resize(num_orientations);
   bool last_orientation = true;
   RAnsBitDecoder decoder;

src/draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_tex_coords_portable_predictor.h

@@ -167,6 +167,13 @@ bool MeshPredictionSchemeTexCoordsPortablePredictor<
         // Return false if the below multiplication would overflow.
         return false;
       }
+      const int64_t pn_uv_absmax_element =
+          std::max(std::abs(pn_uv[0]), std::abs(pn_uv[1]));
+      if (cn_dot_pn >
+          std::numeric_limits<int64_t>::max() / pn_uv_absmax_element) {
+        // Return false if squared length calculation would overflow.
+        return false;
+      }
       const Vec2 x_uv = n_uv * pn_norm2_squared + (cn_dot_pn * pn_uv);
       const int64_t pn_absmax_element =
           std::max(std::max(std::abs(pn[0]), std::abs(pn[1])), std::abs(pn[2]));

src/draco/compression/attributes/prediction_schemes/prediction_scheme_encoder_factory.h

@@ -101,10 +101,11 @@ CreatePredictionSchemeForEncoder(PredictionSchemeMethod method, int att_id,
     // template nature of the prediction schemes).
     const MeshEncoder *const mesh_encoder =
         static_cast<const MeshEncoder *>(encoder);
+    const uint16_t bitstream_version = kDracoMeshBitstreamVersion;
     auto ret = CreateMeshPredictionScheme<
         MeshEncoder, PredictionSchemeEncoder<DataTypeT, TransformT>,
         MeshPredictionSchemeEncoderFactory<DataTypeT>>(
-        mesh_encoder, method, att_id, transform, kDracoMeshBitstreamVersion);
+        mesh_encoder, method, att_id, transform, bitstream_version);
     if (ret) {
       return ret;
     }

src/draco/compression/config/compression_shared.h

@@ -114,6 +114,11 @@ enum PredictionSchemeTransformType {
 enum MeshTraversalMethod {
   MESH_TRAVERSAL_DEPTH_FIRST = 0,
   MESH_TRAVERSAL_PREDICTION_DEGREE = 1,
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  MESH_TRAVERSAL_GREEDY_GUIDED_DFS = 2,
+  MESH_TRAVERSAL_MIN_VALENCE_MISMATCH = 3,
+  MESH_TRAVERSAL_MST_GUIDED_DFS = 4,
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
   NUM_TRAVERSAL_METHODS
 };
 

src/draco/compression/decode_test.cc

@@ -21,6 +21,7 @@
 #include "draco/core/draco_test_base.h"
 #include "draco/core/draco_test_utils.h"
 #include "draco/io/file_utils.h"
+#include "draco/io/obj_encoder.h"
 
 namespace {
 

src/draco/compression/encode_test.cc

@@ -26,6 +26,7 @@
 #include "draco/core/draco_test_base.h"
 #include "draco/core/draco_test_utils.h"
 #include "draco/core/vector_d.h"
+#include "draco/io/file_utils.h"
 #include "draco/io/obj_decoder.h"
 #include "draco/mesh/triangle_soup_mesh_builder.h"
 #include "draco/point_cloud/point_cloud_builder.h"
@@ -508,10 +509,10 @@ TEST_F(EncodeTest, TestDracoCompressionOptionsGridQuantization) {
       encoder.options().GetAttributeInt(pos_att_id, "quantization_bits", -1),
       4);
 
-  // The quantization range should be (1 << quantization_bits) * spacing.
+  // The quantization range should be ((1 << quantization_bits) - 1) * spacing.
   ASSERT_NEAR(encoder.options().GetAttributeFloat(pos_att_id,
                                                   "quantization_range", 0.f),
-              16.f * 0.1f, 1e-6f);
+              15.f * 0.1f, 1e-6f);
 }
 
 TEST_F(EncodeTest, TestDracoCompressionOptionsGridQuantizationWithOffset) {
@@ -561,10 +562,10 @@ TEST_F(EncodeTest, TestDracoCompressionOptionsGridQuantizationWithOffset) {
       encoder.options().GetAttributeInt(pos_att_id, "quantization_bits", -1),
       5);
 
-  // The quantization range should be (1 << quantization_bits) * spacing.
+  // The quantization range should be ((1 << quantization_bits) - 1) * spacing.
   ASSERT_NEAR(encoder.options().GetAttributeFloat(pos_att_id,
                                                   "quantization_range", 0.f),
-              32.f * 0.0625f, 1e-6f);
+              31.f * 0.0625f, 1e-6f);
 }
 #endif  // DRACO_TRANSCODER_SUPPORTED
 

src/draco/compression/expert_encode.cc

@@ -14,16 +14,27 @@
 //
 #include "draco/compression/expert_encode.h"
 
+#include <iostream>
+#include <memory>
+#include <ostream>
+#include <string>
+#include <utility>
+
 #include "draco/compression/mesh/mesh_edgebreaker_encoder.h"
 #include "draco/compression/mesh/mesh_sequential_encoder.h"
 #ifdef DRACO_POINT_CLOUD_COMPRESSION_SUPPORTED
 #include "draco/compression/point_cloud/point_cloud_kd_tree_encoder.h"
 #include "draco/compression/point_cloud/point_cloud_sequential_encoder.h"
 #endif
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+#include "draco/core/status_or.h"
+#include "draco/mesh/mesh_utils.h"
+#endif
+
 #ifdef DRACO_TRANSCODER_SUPPORTED
 #include "draco/core/bit_utils.h"
 #endif
-
 namespace draco {
 
 ExpertEncoder::ExpertEncoder(const PointCloud &point_cloud)
@@ -107,7 +118,7 @@ Status ExpertEncoder::EncodeMeshToBuffer(const Mesh &m,
 #ifdef DRACO_TRANSCODER_SUPPORTED
   // Apply DracoCompressionOptions associated with the mesh.
   DRACO_RETURN_IF_ERROR(ApplyCompressionOptions(m));
-#endif
+#endif  // DRACO_TRANSCODER_SUPPORTED
 
   std::unique_ptr<MeshEncoder> encoder;
   // Select the encoding method only based on the provided options.
@@ -126,6 +137,11 @@ Status ExpertEncoder::EncodeMeshToBuffer(const Mesh &m,
     encoder = std::unique_ptr<MeshEncoder>(new MeshSequentialEncoder());
   }
   encoder->SetMesh(m);
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  DRACO_RETURN_IF_ERROR(UpdateTextureQuantizationBits(m));
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   DRACO_RETURN_IF_ERROR(encoder->Encode(options(), out_buffer));
 
   set_num_encoded_points(encoder->num_encoded_points());
@@ -133,6 +149,57 @@ Status ExpertEncoder::EncodeMeshToBuffer(const Mesh &m,
   return OkStatus();
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+Status ExpertEncoder::UpdateTextureQuantizationBits(const Mesh &mesh) {
+  if (options().GetGlobalBool("find_non_degenerate_texture_quantization",
+                              false)) {
+    // Get the first position quantization bits.
+    const int pos_att_id =
+        mesh.GetNamedAttributeId(draco::GeometryAttribute::Type::POSITION, 0);
+    if (pos_att_id < 0) {
+      return Status(Status::DRACO_ERROR,
+                    "Mesh does not have position attribute.");
+    }
+    const int pos_quantization_bits =
+        options().GetAttributeInt(pos_att_id, "quantization_bits", -1);
+    const PointAttribute *const pos_att = mesh.attribute(pos_att_id);
+
+    for (int i = 0; i < mesh.num_attributes(); ++i) {
+      const PointAttribute *const att = mesh.attribute(i);
+      if (att->attribute_type() == GeometryAttribute::TEX_COORD) {
+        const int original_texture_quantization_bits =
+            options().GetAttributeInt(i, "quantization_bits", -1);
+
+        // Find the lowest quantization only if the quantization bits is
+        // explicitly set and valid.
+        if (original_texture_quantization_bits >= 1 &&
+            original_texture_quantization_bits < 30) {
+          DRACO_ASSIGN_OR_RETURN(const int new_texture_quantization_bits,
+                                 MeshUtils::FindLowestTextureQuantization(
+                                     mesh, *pos_att, pos_quantization_bits,
+                                     *att, original_texture_quantization_bits));
+          if (new_texture_quantization_bits !=
+              original_texture_quantization_bits) {
+            // TODO(fgalligan): Remove this output when draco compression is
+            // done inside its own module.
+            if (options().GetGlobalBool("verbose", false)) {
+              std::cout << "find_non_degenerate_texture_quantization att-id: "
+                        << i
+                        << " qt-orig: " << original_texture_quantization_bits
+                        << " qt-new: " << new_texture_quantization_bits
+                        << std::endl;
+            }
+            options().SetAttributeInt(i, "quantization_bits",
+                                      new_texture_quantization_bits);
+          }
+        }
+      }
+    }
+  }
+  return OkStatus();
+}
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 void ExpertEncoder::Reset(const EncoderOptions &options) {
   Base::Reset(options);
 }
@@ -165,6 +232,17 @@ void ExpertEncoder::SetUseBuiltInAttributeCompression(bool enabled) {
   options().SetGlobalBool("use_built_in_attribute_compression", enabled);
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+void ExpertEncoder::SetFindNonDegenerateTextureQuantization(bool enabled) {
+  options().SetGlobalBool("find_non_degenerate_texture_quantization", enabled);
+}
+
+bool ExpertEncoder::IsFindNonDegenerateTextureQuantizationSet() const {
+  return options().IsGlobalOptionSet(
+      "find_non_degenerate_texture_quantization");
+}
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 void ExpertEncoder::SetEncodingMethod(int encoding_method) {
   Base::SetEncodingMethod(encoding_method);
 }
@@ -201,6 +279,13 @@ Status ExpertEncoder::ApplyCompressionOptions(const Mesh &mesh) {
                        10 - compression_options.compression_level);
   }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  if (!IsFindNonDegenerateTextureQuantizationSet()) {
+    SetFindNonDegenerateTextureQuantization(
+        compression_options.find_non_degenerate_texture_quantization);
+  }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   for (int ai = 0; ai < mesh.num_attributes(); ++ai) {
     if (options().IsAttributeOptionSet(ai, "quantization_bits")) {
       continue;  // Don't override options that have been set.
@@ -282,7 +367,8 @@ Status ExpertEncoder::ApplyGridQuantization(const Mesh &mesh,
     bits++;
   }
   // Compute the range in mesh coordinates that matches the quantization bits.
-  const float range = (1 << bits) * spacing;
+  // Note there are n-1 intervals between the |n| quantization values.
+  const float range = ((1 << bits) - 1) * spacing;
   SetAttributeExplicitQuantization(attribute_index, bits, 3, min_pos.data(),
                                    range);
   return OkStatus();

src/draco/compression/expert_encode.h

@@ -80,6 +80,18 @@ class ExpertEncoder : public EncoderBase<EncoderOptions> {
   // compression is used on top of the Draco compression. Default: [true].
   void SetUseBuiltInAttributeCompression(bool enabled);
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Enables/disables finding the texture quantization that does not cause any
+  // new texture coordinate degenerate faces. The range for the quantization
+  // uses the quantization bits for the texture coordinates as the lower bound
+  // up to 29 for the upper bound. The quantization bits for the texture
+  // coordinates must be set for the encoder to search for a texture coordinate
+  // quantization that does not create any new degenerate faces. Default:
+  // [false].
+  void SetFindNonDegenerateTextureQuantization(bool enabled);
+  bool IsFindNonDegenerateTextureQuantizationSet() const;
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   // Sets the desired encoding method for a given geometry. By default, encoding
   // method is selected based on the properties of the input geometry and based
   // on the other options selected in the used EncoderOptions (such as desired
@@ -138,6 +150,12 @@ class ExpertEncoder : public EncoderBase<EncoderOptions> {
 
   Status EncodeMeshToBuffer(const Mesh &m, EncoderBuffer *out_buffer);
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Updates texture coordinate quantization bits if
+  // "find_non_degenerate_texture_quantization" is set.
+  Status UpdateTextureQuantizationBits(const Mesh &mesh);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 #ifdef DRACO_TRANSCODER_SUPPORTED
   // Applies compression options stored in |mesh|.
   Status ApplyCompressionOptions(const Mesh &mesh);

src/draco/compression/point_cloud/algorithms/dynamic_integer_points_kd_tree_decoder.h

@@ -18,6 +18,7 @@
 #define DRACO_COMPRESSION_POINT_CLOUD_ALGORITHMS_DYNAMIC_INTEGER_POINTS_KD_TREE_DECODER_H_
 
 #include <array>
+#include <limits>
 #include <memory>
 #include <stack>
 #include <vector>
@@ -93,13 +94,22 @@ class DynamicIntegerPointsKdTreeDecoder {
         base_stack_(32 * dimension + 1, VectorUint32(dimension, 0)),
         levels_stack_(32 * dimension + 1, VectorUint32(dimension, 0)) {}
 
-  // Decodes a integer point cloud from |buffer|.
+  // Decodes an integer point cloud from |buffer|. Optional |oit_max_points| can
+  // be used to tell the decoder the maximum number of points accepted by the
+  // iterator.
   template <class OutputIteratorT>
   bool DecodePoints(DecoderBuffer *buffer, OutputIteratorT &oit);
 
+  template <class OutputIteratorT>
+  bool DecodePoints(DecoderBuffer *buffer, OutputIteratorT &oit,
+                    uint32_t oit_max_points);
+
 #ifndef DRACO_OLD_GCC
   template <class OutputIteratorT>
   bool DecodePoints(DecoderBuffer *buffer, OutputIteratorT &&oit);
+  template <class OutputIteratorT>
+  bool DecodePoints(DecoderBuffer *buffer, OutputIteratorT &&oit,
+                    uint32_t oit_max_points);
 #endif  // DRACO_OLD_GCC
 
   const uint32_t dimension() const { return dimension_; }
@@ -150,8 +160,15 @@ template <int compression_level_t>
 template <class OutputIteratorT>
 bool DynamicIntegerPointsKdTreeDecoder<compression_level_t>::DecodePoints(
     DecoderBuffer *buffer, OutputIteratorT &&oit) {
+  return DecodePoints(buffer, oit, std::numeric_limits<uint32_t>::max());
+}
+
+template <int compression_level_t>
+template <class OutputIteratorT>
+bool DynamicIntegerPointsKdTreeDecoder<compression_level_t>::DecodePoints(
+    DecoderBuffer *buffer, OutputIteratorT &&oit, uint32_t oit_max_points) {
   OutputIteratorT local = std::forward<OutputIteratorT>(oit);
-  return DecodePoints(buffer, local);
+  return DecodePoints(buffer, local, oit_max_points);
 }
 #endif  // DRACO_OLD_GCC
 
@@ -159,6 +176,13 @@ template <int compression_level_t>
 template <class OutputIteratorT>
 bool DynamicIntegerPointsKdTreeDecoder<compression_level_t>::DecodePoints(
     DecoderBuffer *buffer, OutputIteratorT &oit) {
+  return DecodePoints(buffer, oit, std::numeric_limits<uint32_t>::max());
+}
+
+template <int compression_level_t>
+template <class OutputIteratorT>
+bool DynamicIntegerPointsKdTreeDecoder<compression_level_t>::DecodePoints(
+    DecoderBuffer *buffer, OutputIteratorT &oit, uint32_t oit_max_points) {
   if (!buffer->Decode(&bit_length_)) {
     return false;
   }
@@ -171,6 +195,9 @@ bool DynamicIntegerPointsKdTreeDecoder<compression_level_t>::DecodePoints(
   if (num_points_ == 0) {
     return true;
   }
+  if (num_points_ > oit_max_points) {
+    return false;
+  }
   num_decoded_points_ = 0;
 
   if (!numbers_decoder_.StartDecoding(buffer)) {

src/draco/compression/point_cloud/point_cloud_sequential_encoding_test.cc

@@ -12,10 +12,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
+#include "draco/attributes/point_attribute.h"
 #include "draco/compression/point_cloud/point_cloud_sequential_decoder.h"
 #include "draco/compression/point_cloud/point_cloud_sequential_encoder.h"
 #include "draco/core/draco_test_base.h"
 #include "draco/core/draco_test_utils.h"
+#include "draco/core/draco_types.h"
 #include "draco/io/obj_decoder.h"
 
 namespace draco {
@@ -84,6 +86,46 @@ TEST_F(PointCloudSequentialEncodingTest, EncodingPointCloudWithMetadata) {
   ASSERT_NE(requested_att_metadata, nullptr);
   ASSERT_EQ(requested_att_metadata->att_unique_id(),
             pc->attribute(pos_att_id)->unique_id());
+
+  std::unique_ptr<PointCloud> polyline(new PointCloud());
+  polyline->set_num_points(total_num_vertices);
+  std::unique_ptr<PointAttribute> pos(new PointAttribute());
+  pos->Init(GeometryAttribute::POSITION, 3, DT_FLOAT32, false,
+            total_num_vertices);
+  pos->SetIdentityMapping();  // Each point has a separate value.
+
+  std::unique_ptr<PointAttribute> polyline_indices(new PointAttribute());
+  polyline_indices->Init(GeometryAttribute::GENERIC, 1, DT_INT32, false,
+                         num_polylines);
+  // Multiple points can share the same value.
+  polyline_indices->SetExplicitMapping(total_num_vertices);
+
+  AttributeValueIndex pos_avi(0);
+  for (int poly_i = 0; poly_i < num_polylines; ++poly_i) {
+    polyline_indices->SetAttributeValue(AttributeValueIndex(poly_i), &poly_i);
+    for (int poly_vi = 0; poly_vi < num_poly_vertices(poly_i); ++poly_vi) {
+      Vector3f vert_pos = GetPolyVertex(poly_i, poly_vi);
+      pos->SetAttributeValue(pos_avi, &vert_pos[0]);
+
+      // Maps the added point to the polyline index. Note that in this case
+      // PointIndex corresponds to the position attribute index.
+      polyline_indices->SetPointMapEntry(PointIndex(pos_avi.value()),
+                                         AttributeValueIndex(poly_i));
+
+      pos_avi++;
+    }
+  }
+  const int pos_att_id = polyline->AddAttribute(std::move(pos));
+  polyline->AddAttribute(std::move(polyline_indices));
+
+  // Encode the point cloud.
+  ExpertEncoder encoder(*pc);
+  // Or POINT
+  encoder.SetEncodingMethod(POINT_CLOUD_SEQUENTIAL_ENCODING);
+  encoder.SetSpeedOptions(3, 3);
+  encoder.SetAttributeQuantization(pos_att_id, quantization_bits);
+  EncoderBuffer buffer;
+  encoder.EncodeToBuffer(&buffer);
 }
 
 // TODO(ostava): Test the reusability of a single instance of the encoder and

src/draco/core/decoder_buffer.h

@@ -162,7 +162,7 @@ class DecoderBuffer {
         return false;
       }
       uint32_t value = 0;
-      for (int32_t bit = 0; bit < static_cast<int32_t>(nbits); ++bit) {
+      for (uint32_t bit = 0; bit < nbits; ++bit) {
         value |= GetBit() << bit;
       }
       *x = value;

src/draco/core/draco_test_utils.cc

@@ -16,9 +16,9 @@
 
 #include <fstream>
 
+#include "draco/core/draco_test_base.h"
 #include "draco/core/macros.h"
 #include "draco/io/file_utils.h"
-#include "draco_test_base.h"
 
 namespace draco {
 

src/draco/core/draco_test_utils.h

@@ -15,6 +15,10 @@
 #ifndef DRACO_CORE_DRACO_TEST_UTILS_H_
 #define DRACO_CORE_DRACO_TEST_UTILS_H_
 
+#include <ostream>
+#include <sstream>
+#include <streambuf>
+
 #include "draco/core/draco_test_base.h"
 #include "draco/draco_features.h"
 #include "draco/io/mesh_io.h"
@@ -88,6 +92,32 @@ std::unique_ptr<T> ReadGeometryFromTestFile(const std::string &file_name);
 
 #endif  // DRACO_TRANSCODER_SUPPORTED
 
+// Utility class for redirection and capture of stderr/stdout.
+class CaptureStream {
+ public:
+  explicit CaptureStream(std::ostream &stream)
+      : old_buffer_(stream.rdbuf(buffer_.rdbuf())), stream_(stream) {}
+
+  ~CaptureStream() { Reset(); }
+
+  std::string GetStringAndRelease() {
+    Reset();
+    return buffer_.str();
+  }
+
+  void Reset() {
+    if (old_buffer_) {
+      stream_.rdbuf(old_buffer_);
+      old_buffer_ = nullptr;
+    }
+  }
+
+ private:
+  std::ostringstream buffer_;
+  std::streambuf *old_buffer_ = nullptr;
+  std::ostream &stream_;
+};
+
 // Evaluates an expression that returns draco::Status. If the status is not OK,
 // the macro asserts and logs the error message.
 #define DRACO_ASSERT_OK(expression)                                      \

src/draco/core/draco_version.h

@@ -18,7 +18,7 @@
 namespace draco {
 
 // Draco version is comprised of <major>.<minor>.<revision>.
-static const char kDracoVersion[] = "1.5.5";
+static const char kDracoVersion[] = "1.5.6";
 
 }  // namespace draco
 

src/draco/core/macros.h

@@ -15,7 +15,8 @@
 #ifndef DRACO_CORE_MACROS_H_
 #define DRACO_CORE_MACROS_H_
 
-#include "assert.h"
+#include <cassert>
+
 #include "draco/draco_features.h"
 
 #ifdef ANDROID_LOGGING
@@ -37,7 +38,7 @@ namespace draco {
 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \
   TypeName(const TypeName &) = delete;     \
   void operator=(const TypeName &) = delete;
-#endif
+#endif  // DISALLOW_COPY_AND_ASSIGN
 
 #ifndef FALLTHROUGH_INTENDED
 #if defined(__clang__) && defined(__has_warning)
@@ -46,7 +47,7 @@ namespace draco {
 #endif
 #elif defined(__GNUC__) && __GNUC__ >= 7
 #define FALLTHROUGH_INTENDED [[gnu::fallthrough]]
-#endif
+#endif  // FALLTHROUGH_INTENDED
 
 // If FALLTHROUGH_INTENDED is still not defined, define it.
 #ifndef FALLTHROUGH_INTENDED
@@ -54,7 +55,7 @@ namespace draco {
   do {                       \
   } while (0)
 #endif
-#endif
+#endif  // FALLTHROUGH_INTENDED
 
 #ifndef LOG
 #define LOG(...) std::cout
@@ -84,7 +85,7 @@ namespace draco {
 #define DRACO_DCHECK_LE(a, b)
 #define DRACO_DCHECK_LT(a, b)
 #define DRACO_DCHECK_NOTNULL(x)
-#endif
+#endif  // DRACO_DEBUG
 
 // Helper macros for concatenating macro values.
 #define DRACO_MACROS_IMPL_CONCAT_INNER_(x, y) x##y

src/draco/core/math_utils.h

@@ -59,17 +59,17 @@ inline uint64_t IntSqrt(uint64_t number) {
 template <
     typename DataTypeT,
     typename std::enable_if<std::is_integral<DataTypeT>::value &&
-                            std::is_signed<DataTypeT>::value>::type* = nullptr>
+                            std::is_signed<DataTypeT>::value>::type * = nullptr>
 inline DataTypeT AddAsUnsigned(DataTypeT a, DataTypeT b) {
   typedef typename std::make_unsigned<DataTypeT>::type DataTypeUT;
   return static_cast<DataTypeT>(static_cast<DataTypeUT>(a) +
                                 static_cast<DataTypeUT>(b));
 }
 
-template <
-    typename DataTypeT,
-    typename std::enable_if<!std::is_integral<DataTypeT>::value ||
-                            !std::is_signed<DataTypeT>::value>::type* = nullptr>
+template <typename DataTypeT,
+          typename std::enable_if<!std::is_integral<DataTypeT>::value ||
+                                  !std::is_signed<DataTypeT>::value>::type * =
+              nullptr>
 inline DataTypeT AddAsUnsigned(DataTypeT a, DataTypeT b) {
   return a + b;
 }

src/draco/core/options.cc

@@ -15,6 +15,7 @@
 #include "draco/core/options.h"
 
 #include <cstdlib>
+#include <set>
 #include <string>
 #include <utility>
 
@@ -26,6 +27,16 @@ void Options::MergeAndReplace(const Options &other_options) {
   }
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+std::set<std::string> Options::ComputeNames() const {
+  std::set<std::string> names;
+  for (auto it = options_.begin(); it != options_.end(); it++) {
+    names.insert(it->first);
+  }
+  return names;
+}
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 void Options::SetInt(const std::string &name, int val) {
   options_[name] = std::to_string(val);
 }

src/draco/core/options.h

@@ -17,6 +17,11 @@
 
 #include <cstdlib>
 #include <map>
+
+#include "draco/draco_features.h"
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+#include <set>
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
 #include <string>
 
 namespace draco {
@@ -34,6 +39,12 @@ class Options {
   // replacing all entries that are present in both options instances.
   void MergeAndReplace(const Options &other_options);
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Computes and returns a set of all option names. This method makes it
+  // possible to access options without knowing their names beforehand.
+  std::set<std::string> ComputeNames() const;
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   void SetInt(const std::string &name, int val);
   void SetFloat(const std::string &name, float val);
   void SetBool(const std::string &name, bool val);
@@ -69,6 +80,27 @@ class Options {
     return options_.count(name) > 0;
   }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Templated version of the getters above that returns an option of a given
+  // type. Supported types are int, bool, float, and std::string.
+  template <typename T>
+  auto Get(const std::string &name) const {
+    if constexpr (std::is_same<T, int>::value) {
+      return Options::GetInt(name);
+    }
+    if constexpr (std::is_same<T, bool>::value) {
+      return Options::GetBool(name);
+    }
+    if constexpr (std::is_same<T, float>::value) {
+      return Options::GetFloat(name);
+    }
+    if constexpr (std::is_same<T, std::string>::value ||
+                  std::is_same<T, const char *>::value) {
+      return Options::GetString(name);
+    }
+  }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
  private:
   // All entries are internally stored as strings and converted to the desired
   // return type based on the used Get* method.

src/draco/core/status.cc

@@ -34,6 +34,7 @@ std::string Status::code_string() const {
     case Code::UNSUPPORTED_FEATURE:
       return "UNSUPPORTED_FEATURE";
   }
+  return "UNKNOWN_STATUS_VALUE";
 }
 
 std::string Status::code_and_error_string() const {

src/draco/io/file_utils.cc

@@ -94,6 +94,23 @@ bool ReadFileToBuffer(const std::string &file_name,
   return file_reader->ReadFileToBuffer(buffer);
 }
 
+bool ReadFileToString(const std::string &file_name, std::string *contents) {
+  if (!contents) {
+    return false;
+  }
+  std::unique_ptr<FileReaderInterface> file_reader =
+      FileReaderFactory::OpenReader(file_name);
+  if (file_reader == nullptr) {
+    return false;
+  }
+  std::vector<char> buffer;
+  if (!ReadFileToBuffer(file_name, &buffer)) {
+    return false;
+  }
+  contents->assign(buffer.begin(), buffer.end());
+  return true;
+}
+
 bool WriteBufferToFile(const char *buffer, size_t buffer_size,
                        const std::string &file_name) {
   std::unique_ptr<FileWriterInterface> file_writer =

src/draco/io/file_utils.h

@@ -54,13 +54,18 @@ std::string RemoveFileExtension(const std::string &filename);
 std::string GetFullPath(const std::string &input_file_relative_path,
                         const std::string &sibling_file_full_path);
 
-// Convenience method. Uses draco::FileReaderFactory internally. Reads contents
+// Convenience methods. Uses draco::FileReaderFactory internally. Reads contents
 // of file referenced by |file_name| into |buffer| and returns true upon
 // success.
 bool ReadFileToBuffer(const std::string &file_name, std::vector<char> *buffer);
 bool ReadFileToBuffer(const std::string &file_name,
                       std::vector<uint8_t> *buffer);
 
+// Convenience method for reading a file into a std::string. Reads contents
+// of file referenced by |file_name| into |contents| and returns true upon
+// success.
+bool ReadFileToString(const std::string &file_name, std::string *contents);
+
 // Convenience method. Uses draco::FileWriterFactory internally. Writes contents
 // of |buffer| to file referred to by |file_name|. File is overwritten if it
 // exists. Returns true after successful write.

src/draco/io/gltf_decoder.cc

@@ -15,7 +15,6 @@
 #include "draco/io/gltf_decoder.h"
 
 #ifdef DRACO_TRANSCODER_SUPPORTED
-
 #include <memory>
 #include <set>
 #include <string>
@@ -38,7 +37,13 @@
 #include "draco/scene/scene_indices.h"
 #include "draco/texture/source_image.h"
 #include "draco/texture/texture_utils.h"
-#include "tiny_gltf.h"
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+#include <cstring>
+
+#include "draco/io/basis_decoder.h"
+#include "draco/mesh/tangent_space_generator.h"
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
 
 namespace draco {
 
@@ -321,6 +326,14 @@ StatusOr<std::unique_ptr<SourceImage>> GetSourceImage(
   source_image->set_filename(image.uri);
   source_image->set_mime_type(image.mimeType);
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  source_image->set_width(image.width);
+  source_image->set_height(image.height);
+  source_image->set_bit_depth(image.bits);
+  DRACO_ASSIGN_OR_RETURN(const uint64_t hash,
+                         TextureUtils::HashTexture(texture));
+  source_image->set_decoded_data_hash(hash);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
   return source_image;
 }
 
@@ -429,6 +442,50 @@ bool WriteWholeFile(std::string * /*err*/, const std::string &filepath,
   return WriteBufferToFile(contents.data(), contents.size(), filepath);
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+// Callback used to load images from TinyGltf library. Currently we use it only
+// when loading Basis (ktx2) images otherwise we fallback to the default loading
+// function.
+// TODO(ostava): Consider always using our texture loader. This will require
+// more testing.
+bool LoadImageDataFromTinyGltf(tinygltf::Image *image, const int image_idx,
+                               std::string *err, std::string *warn,
+                               int req_width, int req_height,
+                               const unsigned char *bytes, int size,
+                               void *user_data) {
+  if (image->mimeType != "image/ktx2") {
+    // Fallback to the default image loader.
+    return tinygltf::LoadImageData(image, image_idx, err, warn, req_width,
+                                   req_height, bytes, size, nullptr);
+  }
+  // Load Basis texture.
+  std::vector<uint8_t> buffer(bytes, bytes + size);
+  Texture texture;
+  Status status =
+      BasisDecoder::DecodeFromBuffer(buffer, texture.GetMutableRGBAImage());
+  if (!status.ok()) {
+    (*err) += "Failed to load Basis KTX texture.\n";
+    return false;
+  }
+  // Convert the texture back to TinyGltf format.
+  // TODO(ostava): We can move the texture directly to GltfLoader if we pass
+  // the GltfDecoder in |user_data|. But this will require some refactoring in
+  // the GltfDecoder code so leaving it for later for now.
+  image->width = texture.width();
+  image->height = texture.height();
+  // Force 4 channels for now (TinyGltf is doing the same).
+  image->component = 4;
+  image->bits = 8;
+  image->pixel_type = TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE;
+  image->image.resize(image->width * image->height * 4);
+  for (int row = 0; row < image->height; ++row) {
+    std::memcpy(image->image.data() + (image->width * 4 * row),
+                texture.GetRGBAImage().GetRow(row), image->width * 4);
+  }
+  return true;
+}
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 }  // namespace
 
 GltfDecoder::GltfDecoder()
@@ -483,6 +540,11 @@ Status GltfDecoder::LoadFile(const std::string &file_name,
   std::string err;
   std::string warn;
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Set custom image loading function.
+  loader.SetImageLoader(LoadImageDataFromTinyGltf, this);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   const tinygltf::FsCallbacks fs_callbacks = {
       &FileExists,
       // TinyGLTF's ExpandFilePath does not do filesystem i/o, so it's safe to
@@ -514,6 +576,12 @@ Status GltfDecoder::LoadBuffer(const DecoderBuffer &buffer) {
   tinygltf::TinyGLTF loader;
   std::string err;
   std::string warn;
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Set custom image loading function.
+  loader.SetImageLoader(LoadImageDataFromTinyGltf, this);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   if (!loader.LoadBinaryFromMemory(
           &gltf_model_, &err, &warn,
           reinterpret_cast<const unsigned char *>(buffer.data_head()),
@@ -609,7 +677,11 @@ Status GltfDecoder::CheckUnsupportedFeatures() {
   for (const auto &extension : gltf_model_.extensionsRequired) {
     if (extension != "KHR_materials_unlit" &&
         extension != "KHR_texture_transform" &&
-        extension != "KHR_draco_mesh_compression") {
+        extension != "KHR_draco_mesh_compression"
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+        && extension != "KHR_texture_basisu"
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+    ) {
       return Status(Status::UNSUPPORTED_FEATURE,
                     extension + " is unsupported.");
     }
@@ -830,6 +902,9 @@ Status GltfDecoder::AccumulatePrimitiveStats(
   }
 
   for (const auto &attribute : primitive.attributes) {
+    if (attribute.second >= gltf_model_.accessors.size()) {
+      return ErrorStatus("Invalid accessor.");
+    }
     const tinygltf::Accessor &accessor =
         gltf_model_.accessors[attribute.second];
 
@@ -1235,7 +1310,15 @@ Status GltfDecoder::CopyTextures(T *owner) {
       // add an image with negative values.
       return Status(Status::DRACO_ERROR, "Error loading image.");
     }
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+    DRACO_ASSIGN_OR_RETURN(
+        std::unique_ptr<Texture> draco_texture,
+        TextureUtils::CreateTexture(image.image.data(), image.width,
+                                    image.height, image.component, image.bits));
+#else
     std::unique_ptr<Texture> draco_texture(new Texture());
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
 
     // Update mapping between glTF images and textures in the texture library.
     gltf_image_to_draco_texture_[i] = draco_texture.get();
@@ -1299,6 +1382,13 @@ Status GltfDecoder::AddMaterialsToDracoMesh(Mesh *mesh) {
     }
   }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  if (is_normal_map_used &&
+      mesh->GetNamedAttribute(GeometryAttribute::TANGENT) == nullptr) {
+    DRACO_RETURN_IF_ERROR(GenerateTangentsForMesh(mesh));
+  }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   return OkStatus();
 }
 
@@ -1354,6 +1444,22 @@ Status GltfDecoder::CheckAndAddTextureToDracoMaterial(
 
   const tinygltf::Texture &input_texture = gltf_model_.textures[texture_index];
   int source_index = input_texture.source;
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  if (source_index < 0) {
+    // Check extensions. If the source image is ktx, the source is stored under
+    // "KHR_texture_basisu" extension.
+    const auto &e = input_texture.extensions.find("KHR_texture_basisu");
+    if (e != input_texture.extensions.end() && e->second.IsObject() &&
+        e->second.Has("source")) {
+      const auto &source_element = e->second.Get("source");
+      if (source_element.IsInt()) {
+        source_index = source_element.Get<int>();
+      }
+    }
+  }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   const auto texture_it = gltf_image_to_draco_texture_.find(source_index);
   if (texture_it != gltf_image_to_draco_texture_.end()) {
     Texture *const texture = texture_it->second;
@@ -1827,6 +1933,9 @@ Status GltfDecoder::DecodePrimitiveForScene(
 
   std::set<int32_t> normalized_attributes;
   for (const auto &attribute : primitive.attributes) {
+    if (attribute.second >= gltf_model_.accessors.size()) {
+      return ErrorStatus("Invalid accessor.");
+    }
     const tinygltf::Accessor &accessor =
         gltf_model_.accessors[attribute.second];
     const int component_type = accessor.componentType;
@@ -2752,6 +2861,12 @@ Status GltfDecoder::AddMaterialsToScene() {
     }
   }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  for (Mesh *mesh : meshes_that_need_tangents) {
+    GenerateTangentsForMesh(mesh);
+  }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   return OkStatus();
 }
 
@@ -2862,6 +2977,23 @@ size_t GltfDecoder::PrimitiveSignature::Hash::operator()(
   return hash;
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+Status GltfDecoder::GenerateTangentsForMesh(Mesh *mesh) {
+  // Input mesh uses a normal map but it does not have a tangent attribute.
+  // Auto-generate the tangents using the Mikktspace algorithm (as defined by
+  // the GLTF 2.0 spec).
+  DRACO_RETURN_IF_ERROR(TangentSpaceGenerator::MikktspaceGenerate(mesh));
+
+  // Add metadata indicating the tangents were automatically generated.
+  std::unique_ptr<AttributeMetadata> metadata(new AttributeMetadata());
+  metadata->AddEntryInt("auto_generated", 1);
+  mesh->AddAttributeMetadata(
+      mesh->GetNamedAttributeId(GeometryAttribute::TANGENT),
+      std::move(metadata));
+  return OkStatus();
+}
+#endif
+
 StatusOr<std::unique_ptr<Mesh>> GltfDecoder::BuildMeshFromBuilder(
     bool use_mesh_builder, TriangleSoupMeshBuilder *mb, PointCloudBuilder *pb) {
   std::unique_ptr<Mesh> mesh;

src/draco/io/gltf_decoder.h

@@ -18,23 +18,21 @@
 #include "draco/draco_features.h"
 
 #ifdef DRACO_TRANSCODER_SUPPORTED
-
 #include <map>
 #include <memory>
 #include <string>
+#include <unordered_map>
 #include <unordered_set>
 #include <vector>
 
 #include "draco/core/decoder_buffer.h"
 #include "draco/core/status.h"
 #include "draco/core/status_or.h"
-#include "draco/io/file_utils.h"
-#include "draco/io/texture_io.h"
+#include "draco/io/tiny_gltf_utils.h"
 #include "draco/mesh/mesh.h"
 #include "draco/mesh/triangle_soup_mesh_builder.h"
 #include "draco/point_cloud/point_cloud_builder.h"
 #include "draco/scene/scene.h"
-#include "tiny_gltf.h"
 
 namespace draco {
 
@@ -429,6 +427,11 @@ class GltfDecoder {
   // Adds the skins to the scene.
   Status AddSkinsToScene();
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Generates tangents for |mesh|.
+  Status GenerateTangentsForMesh(Mesh *mesh);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   // All material and non-material textures (e.g., from EXT_mesh_features) are
   // initially loaded into a texture library inside the the material library.
   // These methods move |non_material_textures| from material texture library

src/draco/io/gltf_decoder_test.cc

@@ -30,6 +30,7 @@
 #include "draco/core/draco_test_utils.h"
 #include "draco/core/draco_types.h"
 #include "draco/io/gltf_test_helper.h"
+#include "draco/io/texture_io.h"
 #include "draco/mesh/mesh_are_equivalent.h"
 #include "draco/mesh/mesh_utils.h"
 #include "draco/scene/scene_indices.h"

src/draco/io/gltf_encoder.cc

@@ -18,13 +18,19 @@
 #include <sys/types.h>
 
 #include <algorithm>
+#include <array>
 #include <cstdint>
+#include <functional>
+#include <iterator>
+#include <map>
 #include <memory>
 #include <set>
 #include <sstream>
 #include <string>
 #include <unordered_map>
 #include <unordered_set>
+#include <utility>
+#include <vector>
 
 #include "draco/attributes/geometry_attribute.h"
 #include "draco/attributes/point_attribute.h"
@@ -33,6 +39,7 @@
 #include "draco/core/draco_types.h"
 #include "draco/core/vector_d.h"
 #include "draco/io/file_utils.h"
+#include "draco/io/file_writer_utils.h"
 #include "draco/io/gltf_utils.h"
 #include "draco/io/texture_io.h"
 #include "draco/mesh/mesh_features.h"
@@ -40,6 +47,7 @@
 #include "draco/mesh/mesh_utils.h"
 #include "draco/scene/instance_array.h"
 #include "draco/scene/scene_indices.h"
+#include "draco/scene/scene_utils.h"
 #include "draco/texture/texture_utils.h"
 
 namespace draco {
@@ -270,6 +278,12 @@ class GltfAsset {
   GltfEncoder::OutputType output_type() const { return output_type_; }
   void set_json_output_mode(JsonWriter::Mode mode) { gltf_json_.SetMode(mode); }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  void SetTextureWriter(GltfEncoder::TextureWriterFunction texture_writer) {
+    custom_texture_writer_ = texture_writer;
+  }
+#endif
+
  private:
   // Pad |buffer_| to 4 byte boundary.
   bool PadBuffer();
@@ -284,14 +298,17 @@ class GltfAsset {
 
   // Compresses |mesh| using Draco. On success returns the buffer_view in
   // |primitive| and number of encoded points and faces.
-  Status CompressMeshWithDraco(const Mesh &mesh, GltfPrimitive *primitive,
+  Status CompressMeshWithDraco(const Mesh &mesh,
+                               const Eigen::Matrix4d &transform,
+                               GltfPrimitive *primitive,
                                int64_t *num_encoded_points,
                                int64_t *num_encoded_faces);
 
   // Adds a Draco mesh associated with a material id and material variants.
   bool AddDracoMesh(const Mesh &mesh, int material_id,
                     const std::vector<MeshGroup::MaterialsVariantsMapping>
-                        &material_variants_mappings);
+                        &material_variants_mappings,
+                    const Eigen::Matrix4d &transform);
 
   // Add the Draco mesh indices to the glTF data. |num_encoded_faces| is the
   // number of faces encoded in |mesh|, which can be different than
@@ -355,6 +372,16 @@ class GltfAsset {
                                   const std::set<DataType> &data_types,
                                   const std::set<int> &num_components);
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  // Combines an occlusion texture with a metallic-roughness texture into a
+  // single shared texture.
+  // TODO(ostava): Consider generalizing the API and moving this to
+  // TextureUtils.
+  static std::unique_ptr<Texture> CreateOcclusionMetallicRoughnessTexture(
+      const Texture &occlusion_texture,
+      const Texture &metallic_roughness_texture);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
   // Returns the name of |texture|. If |texture|'s name is empty then it will
   // generate a name using |texture_index| and |suffix|. If it cannot generate a
   // name then it will return an empty string.
@@ -570,6 +597,7 @@ class GltfAsset {
   // Keeps track if the glTF mesh has been added.
   std::map<MeshGroupIndex, int> mesh_group_index_to_gltf_mesh_;
   std::map<MeshIndex, std::pair<int, int>> mesh_index_to_gltf_mesh_primitive_;
+  IndexTypeVector<MeshIndex, Eigen::Matrix4d> base_mesh_transforms_;
 
   struct EncoderAnimation {
     std::string name;
@@ -625,6 +653,10 @@ class GltfAsset {
   // We need to store them here to ensure their content doesn't get deleted
   // before it is used by the encoder.
   std::vector<std::unique_ptr<Mesh>> local_meshes_;
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  GltfEncoder::TextureWriterFunction custom_texture_writer_;
+#endif
 };
 
 int GltfAsset::UnsignedIntComponentSize(unsigned int max_value) {
@@ -678,7 +710,7 @@ bool GltfAsset::AddDracoMesh(const Mesh &mesh) {
   const int32_t material_att_id =
       mesh.GetNamedAttributeId(GeometryAttribute::MATERIAL);
   if (material_att_id == -1) {
-    if (!AddDracoMesh(mesh, 0, {})) {
+    if (!AddDracoMesh(mesh, 0, {}, Eigen::Matrix4d::Identity())) {
       return false;
     }
   } else {
@@ -709,7 +741,8 @@ bool GltfAsset::AddDracoMesh(const Mesh &mesh) {
 
       // The material index in the glTF file corresponds to the index of the
       // split mesh.
-      if (!AddDracoMesh(*(local_meshes_.back().get()), mat_index, {})) {
+      if (!AddDracoMesh(*(local_meshes_.back().get()), mat_index, {},
+                        Eigen::Matrix4d::Identity())) {
         return false;
       }
     }
@@ -806,12 +839,12 @@ void GltfAsset::AddAttributeToDracoExtension(
 }
 
 Status GltfAsset::CompressMeshWithDraco(const Mesh &mesh,
+                                        const Eigen::Matrix4d &transform,
                                         GltfPrimitive *primitive,
                                         int64_t *num_encoded_points,
                                         int64_t *num_encoded_faces) {
   // Check that geometry comression options are valid.
-  const DracoCompressionOptions &compression_options =
-      mesh.GetCompressionOptions();
+  DracoCompressionOptions compression_options = mesh.GetCompressionOptions();
   DRACO_RETURN_IF_ERROR(compression_options.Check());
 
   // Make a copy of the mesh. It will be modified and compressed.
@@ -847,9 +880,29 @@ Status GltfAsset::CompressMeshWithDraco(const Mesh &mesh,
     if (att->attribute_type() == GeometryAttribute::POSITION &&
         !compression_options.quantization_position
              .AreQuantizationBitsDefined()) {
-      // TODO(ostava): Handle grid option. This will be implemented in a
-      // separate CL.
-      return ErrorStatus("Grid quantization not implemented yet.");
+      // Desired spacing in the "global" coordinate system.
+      const float global_spacing =
+          compression_options.quantization_position.spacing();
+
+      // Note: Ideally we would transform the whole mesh before encoding and
+      // apply the original global spacing on the transformed mesh. But neither
+      // KHR_draco_mesh_compression, nor Draco bitstream support post-decoding
+      // transformations so we have to modify the grid settings here.
+
+      // Transform this spacing to the local coordinate system of the base mesh.
+      // We will get the largest scale factor from the transformation matrix and
+      // use it to adjust the grid spacing.
+      const Vector3f scale_vec(transform.col(0).norm(), transform.col(1).norm(),
+                               transform.col(2).norm());
+
+      const float max_scale = scale_vec.MaxCoeff();
+
+      // Spacing is inverse to the scale. The larger the scale, the smaller the
+      // spacing must be.
+      const float local_spacing = global_spacing / max_scale;
+
+      // Update the compression options of the processed mesh.
+      compression_options.quantization_position.SetGrid(local_spacing);
     } else {
       int num_quantization_bits = -1;
       switch (att->attribute_type()) {
@@ -911,6 +964,14 @@ Status GltfAsset::CompressMeshWithDraco(const Mesh &mesh,
     }
   }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  encoder.SetFindNonDegenerateTextureQuantization(
+      compression_options.find_non_degenerate_texture_quantization);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
+  // |compression_options| may have been modified and we need to update them
+  // before we start the encoding.
+  mesh_copy->SetCompressionOptions(compression_options);
   DRACO_RETURN_IF_ERROR(encoder.EncodeToBuffer(&buffer));
   *num_encoded_points = encoder.num_encoded_points();
   *num_encoded_faces = encoder.num_encoded_faces();
@@ -981,13 +1042,14 @@ bool CheckAndGetTexCoordAttributeOrder(const Mesh &mesh,
 bool GltfAsset::AddDracoMesh(
     const Mesh &mesh, int material_id,
     const std::vector<MeshGroup::MaterialsVariantsMapping>
-        &material_variants_mappings) {
+        &material_variants_mappings,
+    const Eigen::Matrix4d &transform) {
   GltfPrimitive primitive;
   int64_t num_encoded_points = mesh.num_points();
   int64_t num_encoded_faces = mesh.num_faces();
   if (num_encoded_faces > 0 && mesh.IsCompressionEnabled()) {
     const Status status = CompressMeshWithDraco(
-        mesh, &primitive, &num_encoded_points, &num_encoded_faces);
+        mesh, transform, &primitive, &num_encoded_points, &num_encoded_faces);
     if (!status.ok()) {
       return false;
     }
@@ -1366,6 +1428,32 @@ bool GltfAsset::CheckDracoAttribute(const PointAttribute *attribute,
   return true;
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+std::unique_ptr<Texture> GltfAsset::CreateOcclusionMetallicRoughnessTexture(
+    const Texture &occlusion_texture,
+    const Texture &metallic_roughness_texture) {
+  if (occlusion_texture.width() != metallic_roughness_texture.width() ||
+      occlusion_texture.height() != metallic_roughness_texture.height()) {
+    return nullptr;
+  }
+  // Combine occlusion texture (R channel) and the metallic-roughness texture
+  // (G an B channels).
+  std::unique_ptr<Texture> combined_texture(new Texture());
+  combined_texture->Copy(metallic_roughness_texture);
+  // TODO(vytyaz): Combine OMR textures earlier in the pipeline in order to
+  // avoid modifying the textures here and invalidating precompressed images.
+  combined_texture->GetMutableEncodedImages().clear();
+  for (int y = 0; y < combined_texture->height(); ++y) {
+    for (int x = 0; x < combined_texture->width(); ++x) {
+      RGBA pixel = combined_texture->GetPixelUnsafe(x, y);
+      pixel.r = occlusion_texture.GetPixelUnsafe(x, y).r;
+      combined_texture->SetPixelUnsafe(x, y, pixel);
+    }
+  }
+  return combined_texture;
+}
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 StatusOr<int> GltfAsset::AddImage(const std::string &image_stem,
                                   const Texture *texture, int num_components) {
   return AddImage(image_stem, texture, nullptr, num_components);
@@ -1385,7 +1473,11 @@ StatusOr<int> GltfAsset::AddImage(const std::string &image_stem,
     }
     return it->second;
   }
-  const std::string extension = TextureUtils::GetTargetExtension(*texture);
+  std::string extension = TextureUtils::GetTargetExtension(*texture);
+  if (extension.empty()) {
+    // Try to get extension from the source file name.
+    extension = LowercaseFileExtension(texture->source_image().filename());
+  }
   GltfImage image;
   image.image_name = image_stem + "." + extension;
   image.texture = texture;
@@ -1421,7 +1513,17 @@ Status GltfAsset::SaveImageToBuffer(int image_index) {
   const Texture *const texture = image.texture;
   const int num_components = image.num_components;
   std::vector<uint8_t> buffer;
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  if (custom_texture_writer_) {
+    DRACO_RETURN_IF_ERROR(
+        custom_texture_writer_(*texture, num_components, &buffer));
+  } else {
+    DRACO_RETURN_IF_ERROR(
+        WriteTextureToBuffer(*texture, num_components, &buffer));
+  }
+#else
   DRACO_RETURN_IF_ERROR(WriteTextureToBuffer(*texture, &buffer));
+#endif
 
   // Add the image data to the buffer.
   const size_t buffer_start_offset = buffer_.size();
@@ -1470,6 +1572,9 @@ Status GltfAsset::AddScene(const Scene &scene) {
   if (!AddMaterials(scene)) {
     return Status(Status::DRACO_ERROR, "Error adding materials to the scene.");
   }
+  // Initialize base mesh transforms that may be needed when the base meshes are
+  // compressed with Draco.
+  base_mesh_transforms_ = SceneUtils::FindLargestBaseMeshTransforms(scene);
   for (SceneNodeIndex i(0); i < scene.NumNodes(); ++i) {
     DRACO_RETURN_IF_ERROR(AddSceneNode(scene, i));
   }
@@ -1521,7 +1626,8 @@ Status GltfAsset::AddSceneNode(const Scene &scene,
           // We have not added the mesh to the scene yet.
           const Mesh &mesh = scene.GetMesh(instance.mesh_index);
           if (!AddDracoMesh(mesh, instance.material_index,
-                            instance.materials_variants_mappings)) {
+                            instance.materials_variants_mappings,
+                            base_mesh_transforms_[instance.mesh_index])) {
             return Status(Status::DRACO_ERROR, "Adding a Draco mesh failed.");
           }
           const int gltf_mesh_index = meshes_.size() - 1;
@@ -2379,7 +2485,11 @@ Status GltfAsset::EncodeMaterialsProperty(EncoderBuffer *buf_out) {
 
     gltf_json_.BeginObject("pbrMetallicRoughness");
     if (color) {
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+      const bool rgba = !TextureUtils::IsTextureOpaque(*color->texture());
+#else
       const bool rgba = true;  // Unused for now.
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
       const std::string texture_stem = TextureUtils::GetOrGenerateTargetStem(
           *color->texture(), i, "_BaseColor");
       DRACO_ASSIGN_OR_RETURN(
@@ -2401,6 +2511,39 @@ Status GltfAsset::EncodeMaterialsProperty(EncoderBuffer *buf_out) {
         DRACO_ASSIGN_OR_RETURN(occlusion_metallic_roughness_image_index,
                                AddImage(texture_stem, metallic->texture(), 3));
       }
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+      else {
+        // Metallic and occlusion texture use a different resource. Try to
+        // combine them if possible.
+        std::unique_ptr<Texture> occlusion_metallic_roughness_texture =
+            CreateOcclusionMetallicRoughnessTexture(*occlusion->texture(),
+                                                    *metallic->texture());
+        if (occlusion_metallic_roughness_texture) {
+          std::string metallic_stem =
+              TextureUtils::GetTargetStem(*metallic->texture());
+          const std::string occlusion_stem =
+              TextureUtils::GetTargetStem(*occlusion->texture());
+          // Get the texture name if the two names are not equal or both names
+          // are empty.
+          if (metallic_stem != occlusion_stem || metallic_stem.empty()) {
+            metallic_stem = TextureUtils::GetOrGenerateTargetStem(
+                *metallic->texture(), i, "_OcclusionMetallicRoughness");
+          }
+          const Texture *const occlusion_metallic_rougness_texture_raw_ptr =
+              occlusion_metallic_roughness_texture.get();
+          // TODO(vytyaz): If occlusion and metallic-roughness textures are
+          // shared between multiple materials, then combining them for each
+          // material will result in writing duplicate images, i.e., one
+          // combined image per such material will be written. Either share the
+          // combined image between materials or do not combine.
+          DRACO_ASSIGN_OR_RETURN(
+              occlusion_metallic_roughness_image_index,
+              AddImage(metallic_stem,
+                       occlusion_metallic_rougness_texture_raw_ptr,
+                       std::move(occlusion_metallic_roughness_texture), 3));
+        }
+      }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
       if (occlusion_metallic_roughness_image_index != -1)
         DRACO_RETURN_IF_ERROR(EncodeTextureMap(
             "metallicRoughnessTexture",
@@ -2810,7 +2953,11 @@ Status GltfAsset::EncodeTexture(const std::string &name,
   const TextureMap *const texture_map = material.GetTextureMapByType(type);
   if (texture_map) {
     if (num_components == -1) {
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+      const bool rgba = !TextureUtils::IsTextureOpaque(*texture_map->texture());
+#else
       const bool rgba = true;  // Unused for now.
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
       num_components = rgba ? 4 : 3;
     }
     const std::string texture_stem = TextureUtils::GetOrGenerateTargetStem(
@@ -3411,7 +3558,6 @@ Status GltfEncoder::EncodeFile(const T &geometry, const std::string &filename,
   }
   return WriteGltfFiles(gltf_asset, buffer, filename, bin_filename,
                         resource_dir);
-  return OkStatus();
 }
 
 template <typename T>
@@ -3530,7 +3676,27 @@ Status GltfEncoder::WriteGltfFiles(const GltfAsset &gltf_asset,
     if (!image) {
       return Status(Status::DRACO_ERROR, "Error getting glTF image.");
     }
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+    if (custom_texture_writer_) {
+      std::vector<uint8_t> buffer;
+      DRACO_RETURN_IF_ERROR(custom_texture_writer_(
+          *image->texture, image->num_components, &buffer));
+
+      // Create directories if needed.
+      if (!CheckAndCreatePathForFile(name)) {
+        return Status(Status::DRACO_ERROR,
+                      "Failed to create output directories.");
+      }
+      if (!WriteBufferToFile(buffer.data(), buffer.size(), name)) {
+        return Status(Status::DRACO_ERROR, "Failed to write image.");
+      }
+    } else {
+      DRACO_RETURN_IF_ERROR(
+          WriteTextureToFile(name, *image->texture, image->num_components));
+    }
+#else
     DRACO_RETURN_IF_ERROR(WriteTextureToFile(name, *image->texture));
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
   }
   return OkStatus();
 }

src/draco/io/gltf_encoder.h

@@ -18,6 +18,7 @@
 #include "draco/draco_features.h"
 
 #ifdef DRACO_TRANSCODER_SUPPORTED
+#include <functional>
 #include <iostream>
 #include <map>
 #include <sstream>
@@ -83,10 +84,23 @@ class GltfEncoder {
   void set_output_type(OutputType type) { output_type_ = type; }
   OutputType output_type() const { return output_type_; }
 
-  // The name of the attribute metadata that contains the glTF attribute name.
-  // For application-specific generic attributes, if the metadata for an
-  // attribute contains this key, then the value will be used as the encoded
-  // attribute name in the output GLTF.
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  typedef std::function<Status(const Texture &texture, int num_channels,
+                               std::vector<uint8_t> *out_buffer)>
+      TextureWriterFunction;
+
+  // Sets a custom texture writer function that can be used to encode texture
+  // data into a buffer. The main purpose is to allow encoding of formats that
+  // are not directly supported by Draco.
+  void SetTextureWriter(TextureWriterFunction texture_writer) {
+    custom_texture_writer_ = texture_writer;
+  }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
+  // The name of the attribute metadata that contains the glTF attribute
+  // name. For application-specific generic attributes, if the metadata for
+  // an attribute contains this key, then the value will be used as the
+  // encoded attribute name in the output GLTF.
   static const char kDracoMetadataGltfAttributeName[];
 
  private:
@@ -125,6 +139,10 @@ class GltfEncoder {
 
   EncoderBuffer *out_buffer_;
   OutputType output_type_;
+
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  TextureWriterFunction custom_texture_writer_ = nullptr;
+#endif
 };
 
 }  // namespace draco

src/draco/io/gltf_encoder_test.cc

@@ -853,6 +853,66 @@ TEST_F(GltfEncoderTest, TestQuantizationPerAttribute) {
   ASSERT_LT(tangent_quantization_bin_size, tex_coord_quantization_bin_size);
 }
 
+// Tests encoding a glTF with multiple scaled instances with Draco compression
+// using grid options for position quantization.
+TEST_F(GltfEncoderTest, TestDracoCompressionWithGridOptions) {
+  const std::string file_name =
+      "SpheresScaledInstances/glTF/spheres_scaled_instances.gltf";
+  std::unique_ptr<Scene> scene(DecodeTestGltfFileToScene(file_name));
+  ASSERT_NE(scene, nullptr);
+
+  const auto bbox = scene->GetMesh(MeshIndex(0)).ComputeBoundingBox();
+  const float mesh_size = bbox.Size().MaxCoeff();
+
+  // All dimensions of the original mesh are between [-1, 1]. Let's move the
+  // mesh to [0, 2] which will allow us to match grid quantization with the
+  // regular quantization (grid quantization is always aligned with 0).
+  Mesh &mesh = scene->GetMesh(MeshIndex(0));
+  PointAttribute *pos_att =
+      mesh.attribute(mesh.GetNamedAttributeId(GeometryAttribute::POSITION));
+  for (AttributeValueIndex avi(0); avi < pos_att->size(); ++avi) {
+    Vector3f pos;
+    pos_att->GetValue(avi, &pos[0]);
+    pos += Vector3f(1.f, 1.f, 1.f);
+    pos_att->SetAttributeValue(avi, &pos[0]);
+  }
+
+  DracoCompressionOptions options;
+
+  // First quantize the scene with 8 bits and save the result.
+  options.quantization_position.SetQuantizationBits(8);
+  SceneUtils::SetDracoCompressionOptions(&options, scene.get());
+
+  const std::string gltf_filename = draco::GetTestTempFileFullPath("temp.glb");
+  GltfEncoder encoder;
+  DRACO_ASSERT_OK(encoder.EncodeFile(*scene, gltf_filename));
+  // Get the size of the generated file.
+  const size_t qb_file_size = draco::GetFileSize(gltf_filename);
+
+  // Now set grid quantization and ensure the encoded file size is about the
+  // same. The max instance scale is 3 and model size is |mesh_size| so the grid
+  // scale must account for that.
+  options.quantization_position.SetGrid(mesh_size * 3. / 255.);
+  SceneUtils::SetDracoCompressionOptions(&options, scene.get());
+
+  DRACO_ASSERT_OK(encoder.EncodeFile(*scene, gltf_filename));
+  // Get the size of the generated file.
+  const size_t grid_file_size = draco::GetFileSize(gltf_filename);
+
+  ASSERT_EQ(grid_file_size, qb_file_size);
+
+  // Now set grid quantization to different settings and ensure the encoded size
+  // changed. We reduce spacing which should increase the size.
+  options.quantization_position.SetGrid(mesh_size * 3. / 511.);
+  SceneUtils::SetDracoCompressionOptions(&options, scene.get());
+
+  DRACO_ASSERT_OK(encoder.EncodeFile(*scene, gltf_filename));
+
+  // Get the size of the generated file.
+  const size_t grid_file_size_2 = draco::GetFileSize(gltf_filename);
+  ASSERT_GT(grid_file_size_2, grid_file_size);
+}
+
 TEST_F(GltfEncoderTest, TestOutputType) {
   const std::string file_name = "sphere.gltf";
   const std::unique_ptr<Scene> scene(DecodeTestGltfFileToScene(file_name));
@@ -1652,6 +1712,74 @@ TEST_F(GltfEncoderTest, EncodePointCloudWithMaterials) {
   ASSERT_EQ(mesh_from_gltf->GetMaterialLibrary().NumMaterials(), 2);
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+// Custom texture writer function that fills the buffer with some dummy text.
+Status CustomTextureWriter(const Texture &texture, int num_channels,
+                           std::vector<uint8_t> *out_buffer) {
+  std::string dummy("Custom");
+  out_buffer->insert(out_buffer->end(), dummy.begin(), dummy.end());
+  return OkStatus();
+}
+
+// Tests encoding of textures using a custom writer function.
+TEST_F(GltfEncoderTest, EncodeCustomTextureToBuffer) {
+  auto mesh = draco::ReadMeshFromTestFile("cube_att.obj");
+  ASSERT_NE(mesh, nullptr);
+  ASSERT_EQ(mesh->GetMaterialLibrary().NumMaterials(), 0);
+  ASSERT_EQ(mesh->GetMaterialLibrary().GetTextureLibrary().NumTextures(), 0);
+
+  // Insert a dummy material with a dummy texture.
+  std::unique_ptr<draco::Texture> dummy_texture(new draco::Texture());
+  dummy_texture->source_image().set_filename("dummy.dm");
+  dummy_texture->source_image().set_mime_type("dm");
+  mesh->GetMaterialLibrary().MutableMaterial(0)->SetTextureMap(
+      std::move(dummy_texture), draco::TextureMap::COLOR, 0);
+
+  // Encode the mesh to a buffer.
+  draco::EncoderBuffer buffer;
+  draco::GltfEncoder encoder;
+  encoder.SetTextureWriter(CustomTextureWriter);
+  DRACO_ASSERT_OK(encoder.EncodeToBuffer(*mesh, &buffer));
+
+  // Ensure the texture was encoded correctly.
+  std::string encoded_string(buffer.data(), buffer.size());
+  ASSERT_NE(encoded_string.find_first_of("Custom"), std::string::npos);
+  ASSERT_NE(encoded_string.find_first_of("\"mimeType\":\"dm\""),
+            std::string::npos);
+}
+
+TEST_F(GltfEncoderTest, EncodeCustomTextureToFile) {
+  auto mesh = draco::ReadMeshFromTestFile("cube_att.obj");
+  ASSERT_NE(mesh, nullptr);
+  ASSERT_EQ(mesh->GetMaterialLibrary().NumMaterials(), 0);
+  ASSERT_EQ(mesh->GetMaterialLibrary().GetTextureLibrary().NumTextures(), 0);
+
+  // Insert a dummy material with a dummy texture.
+  std::unique_ptr<draco::Texture> dummy_texture(new draco::Texture());
+  dummy_texture->source_image().set_filename("dummy.dm");
+  dummy_texture->source_image().set_mime_type("dm");
+  mesh->GetMaterialLibrary().MutableMaterial(0)->SetTextureMap(
+      std::move(dummy_texture), draco::TextureMap::COLOR, 0);
+
+  // Encode the mesh to a file.
+  const std::string gltf_file_full_path =
+      draco::GetTestTempFileFullPath("test.gltf");
+  std::string folder_path;
+  std::string gltf_file_name;
+  draco::SplitPath(gltf_file_full_path, &folder_path, &gltf_file_name);
+  draco::GltfEncoder gltf_encoder;
+  gltf_encoder.SetTextureWriter(CustomTextureWriter);
+  ASSERT_TRUE(
+      gltf_encoder.EncodeToFile<Mesh>(*mesh, gltf_file_full_path, folder_path));
+
+  // Ensure the texture file was written successfully.
+  std::vector<char> file_data;
+  ASSERT_TRUE(
+      ReadFileToBuffer(GetTestTempFileFullPath("dummy.dm"), &file_data));
+  ASSERT_EQ(std::string(file_data.begin(), file_data.end()), "Custom");
+}
+#endif
+
 }  // namespace draco
 
 #endif  // DRACO_TRANSCODER_SUPPORTED

src/draco/io/gltf_utils.cc

@@ -112,6 +112,43 @@ std::string JsonWriter::MoveData() {
   return str;
 }
 
+std::string JsonWriter::EscapeCharacter(const std::string &str,
+                                        const char character) {
+  size_t start = 0;
+  if ((start = str.find(character, start)) != std::string::npos) {
+    std::string s = str;
+    std::string escaped_character = "\\";
+    escaped_character += character;
+    do {
+      s.replace(start, 1, escaped_character);
+      start += escaped_character.length();
+    } while ((start = s.find(character, start)) != std::string::npos);
+    return s;
+  }
+  return str;
+}
+
+std::string JsonWriter::EscapeJsonSpecialCharacters(const std::string &str) {
+  std::string s = str;
+  const char backspace = '\b';
+  const char form_feed = '\f';
+  const char newline = '\n';
+  const char carriage_return = '\r';
+  const char tab = '\t';
+  const char double_quote = '\"';
+  const char backslash = '\\';
+
+  // Backslash must come first.
+  s = EscapeCharacter(s, backslash);
+  s = EscapeCharacter(s, backspace);
+  s = EscapeCharacter(s, form_feed);
+  s = EscapeCharacter(s, newline);
+  s = EscapeCharacter(s, carriage_return);
+  s = EscapeCharacter(s, tab);
+  s = EscapeCharacter(s, double_quote);
+  return s;
+}
+
 }  // namespace draco
 
 #endif  // DRACO_TRANSCODER_SUPPORTED

src/draco/io/gltf_utils.h

@@ -105,31 +105,39 @@ class JsonWriter {
   }
 
   void OutputValue(const std::string &name) {
+    const std::string escaped_name = EscapeJsonSpecialCharacters(name);
     FinishPreviousLine(VALUE);
-    o_ << indent_ << "\"" << name << "\"";
+    o_ << indent_ << "\"" << escaped_name << "\"";
   }
 
   void OutputValue(const std::string &name, const std::string &value) {
+    const std::string escaped_name = EscapeJsonSpecialCharacters(name);
+    const std::string escaped_value = EscapeJsonSpecialCharacters(value);
     FinishPreviousLine(VALUE);
-    o_ << indent_ << "\"" << name << "\":" << separator_ << "\"" << value
-       << "\"";
+    o_ << indent_ << "\"" << escaped_name << "\":" << separator_ << "\""
+       << escaped_value << "\"";
   }
 
   void OutputValue(const std::string &name, const char *value) {
+    const std::string escaped_name = EscapeJsonSpecialCharacters(name);
+    const std::string escaped_value = EscapeJsonSpecialCharacters(value);
     FinishPreviousLine(VALUE);
-    o_ << indent_ << "\"" << name << "\":" << separator_ << "\"" << value
-       << "\"";
+    o_ << indent_ << "\"" << escaped_name << "\":" << separator_ << "\""
+       << escaped_value << "\"";
   }
 
   template <typename T>
   void OutputValue(const std::string &name, const T &value) {
+    const std::string escaped_name = EscapeJsonSpecialCharacters(name);
     FinishPreviousLine(VALUE);
-    o_ << indent_ << "\"" << name << "\":" << separator_ << value;
+    o_ << indent_ << "\"" << escaped_name << "\":" << separator_ << value;
   }
 
   void OutputValue(const std::string &name, const bool &value) {
+    const std::string escaped_name = EscapeJsonSpecialCharacters(name);
     FinishPreviousLine(VALUE);
-    o_ << indent_ << "\"" << name << "\":" << separator_ << ToString(value);
+    o_ << indent_ << "\"" << escaped_name << "\":" << separator_
+       << ToString(value);
   }
 
   // Return the current output and then clear the stringstream.
@@ -139,6 +147,13 @@ class JsonWriter {
   // Check if a comma needs to be added to the output and then add a new line.
   void FinishPreviousLine(OutputType curr_type);
 
+  // Returns a string escaping all instances of |character| in |str|.
+  std::string EscapeCharacter(const std::string &str, const char character);
+
+  // Returns a string escaping all of the Json special characters in |str|.
+  // Carriage return is not handled.
+  std::string EscapeJsonSpecialCharacters(const std::string &str);
+
   // Returns string representation of a Boolean |value|.
   static std::string ToString(bool value) { return value ? "true" : "false"; }
 

src/draco/io/gltf_utils_test.cc

@@ -100,6 +100,47 @@ TEST_F(GltfUtilsTest, TestValues) {
   CompareGolden(&json_writer, "\"test bool\": true");
 }
 
+TEST_F(GltfUtilsTest, TestSpecialCharacters) {
+  JsonWriter json_writer;
+  const std::string test_double_quote = "I am double quote\"";
+  json_writer.OutputValue("test double quote", test_double_quote);
+  CompareGolden(&json_writer,
+                "\"test double quote\": \"I am double quote\\\"\"");
+
+  json_writer.Reset();
+  const std::string test_backspace = "I am backspace\b";
+  json_writer.OutputValue("test backspace", test_backspace);
+  CompareGolden(&json_writer, "\"test backspace\": \"I am backspace\\\b\"");
+
+  json_writer.Reset();
+  const std::string test_form_feed = "I am form feed\f";
+  json_writer.OutputValue("test form feed", test_form_feed);
+  CompareGolden(&json_writer, "\"test form feed\": \"I am form feed\\\f\"");
+
+  json_writer.Reset();
+  const std::string test_newline = "I am newline\n";
+  json_writer.OutputValue("test newline", test_newline);
+  CompareGolden(&json_writer, "\"test newline\": \"I am newline\\\n\"");
+
+  json_writer.Reset();
+  const std::string test_tab = "I am tab\t";
+  json_writer.OutputValue("test tab", test_tab);
+  CompareGolden(&json_writer, "\"test tab\": \"I am tab\\\t\"");
+
+  json_writer.Reset();
+  const std::string test_backslash = "I am backslash\\";
+  json_writer.OutputValue("test backslash", test_backslash);
+  CompareGolden(&json_writer, "\"test backslash\": \"I am backslash\\\\\"");
+
+  json_writer.Reset();
+  const std::string test_multiple_special_characters = "\"break\"and\\more\"\\";
+  json_writer.OutputValue("test multiple_special_characters",
+                          test_multiple_special_characters);
+  CompareGolden(&json_writer,
+                "\"test multiple_special_characters\": "
+                "\"\\\"break\\\"and\\\\more\\\"\\\\\"");
+}
+
 TEST_F(GltfUtilsTest, TestObjects) {
   JsonWriter json_writer;
   json_writer.BeginObject();

src/draco/io/image_compression_options.h

@@ -22,9 +22,66 @@
 
 namespace draco {
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+// Enum defining how long the texture compression should take. The quality of
+// the compressed image is the inverse of the compression speed. I.e. SLOW will
+// take longer to compress than NORMAL, but quality will be better. COPY is a
+// special setting that should be the fastest as the texture io will try and
+// copy the source image data. If COPY mode is set then any attempt to copy a
+// texture that has been modified will return an error. LOSSLESS is a special
+// mode that translates into COPY for lossy image codecs and NORMAL for lossless
+// image codecs. LOSSLESS_SLOW is a special mode that translates into COPY for
+// lossy image codecs and SLOW for lossless image codecs.
+// TODO(b/155488625): Investigate changing enum to be quality based.
+enum class ImageCompressionSpeed {
+  SLOW,
+  NORMAL,
+  FAST,
+  COPY,
+  LOSSLESS,
+  LOSSLESS_SLOW
+};
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 // Enum defining image compression formats.
 enum class ImageFormat { NONE, PNG, JPEG, BASIS, WEBP };
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+struct ImageCompressionOptions {
+  explicit ImageCompressionOptions(ImageCompressionSpeed speed)
+      : image_compression_speed(speed),
+        target_image_format(ImageFormat::NONE),
+        jpeg_quality(-1),
+        basis_quality(128),  // TODO(vytyaz): Revisit the default value.
+        generate_mipmaps(true),
+        webp_quality(-1) {}
+  ImageCompressionOptions()
+      : ImageCompressionOptions(ImageCompressionSpeed::LOSSLESS) {}
+  ImageCompressionSpeed image_compression_speed;
+
+  // Specifies target format for compressed images. Currently supported formats
+  // are JPEG, PNG, or BASIS. The NONE format indicates that the image format
+  // should remain unchanged. The BASIS format indicates that the image will be
+  // stored as KTX2 when the model is output as glTF.
+  ImageFormat target_image_format;
+
+  // Quality in [0, 100] range for images saved in JPEG format. When set to -1,
+  // the quality will be determined based on image compression speed.
+  int jpeg_quality;
+
+  // Quality in [0, 255] range for images saved in Basis format.
+  int basis_quality;
+
+  // Indicates that mipmap levels should be generated when saving an image in
+  // Basis format.
+  bool generate_mipmaps;
+
+  // Quality in [0, 100] range for images saved in WebP format. When set to -1,
+  // the quality will be determined based on image compression speed.
+  int webp_quality;
+};
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 }  // namespace draco
 
 #endif  // DRACO_TRANSCODER_SUPPORTED

src/draco/io/obj_decoder.cc

@@ -14,6 +14,7 @@
 //
 #include "draco/io/obj_decoder.h"
 
+#include <algorithm>
 #include <cctype>
 #include <cmath>
 #include <utility>

src/draco/io/obj_decoder.h

@@ -94,6 +94,7 @@ class ObjDecoder {
   bool ParseMaterialFile(const std::string &file_name, Status *status);
   bool ParseMaterialFileDefinition(Status *status);
 
+  // Methods related to polygon triangulation and preservation.
   static int Triangulate(int tri_index, int tri_corner);
   static bool IsNewEdge(int tri_count, int tri_index, int tri_corner);
 
@@ -126,6 +127,8 @@ class ObjDecoder {
   std::unordered_map<std::string, int> obj_name_to_id_;
 
   bool use_metadata_;
+
+  // Polygon preservation flags.
   bool preserve_polygons_;
   bool has_polygons_;
 

src/draco/io/obj_decoder_test.cc

@@ -56,7 +56,8 @@ class ObjDecoderTest : public ::testing::Test {
 
   template <class Geometry>
   std::unique_ptr<Geometry> DecodeObjWithPolygons(
-      const std::string &file_name) const {
+      const std::string &file_name, bool regularize_quads,
+      bool store_added_edges_per_vertex) const {
     const std::string path = GetTestFileFullPath(file_name);
     ObjDecoder decoder;
     decoder.set_preserve_polygons(true);
@@ -140,7 +141,10 @@ TEST_F(ObjDecoderTest, QuadTriangulateOBJ) {
 TEST_F(ObjDecoderTest, QuadPreserveOBJ) {
   // Tests loading an Obj with quad faces preserved as an attribute.
   const std::string file_name = "cube_quads.obj";
-  const std::unique_ptr<Mesh> mesh(DecodeObjWithPolygons<Mesh>(file_name));
+  constexpr bool kRegularizeQuads = false;
+  constexpr bool kStoreAddedEdgesPerVertex = false;
+  const std::unique_ptr<Mesh> mesh(DecodeObjWithPolygons<Mesh>(
+      file_name, kRegularizeQuads, kStoreAddedEdgesPerVertex));
   ASSERT_NE(mesh, nullptr) << "Failed to load test model " << file_name;
   ASSERT_EQ(mesh->num_faces(), 12);
 
@@ -194,7 +198,10 @@ TEST_F(ObjDecoderTest, OctagonTriangulatedOBJ) {
 TEST_F(ObjDecoderTest, OctagonPreservedOBJ) {
   // Tests that we can load an obj with an octagon preserved as an attribute.
   const std::string file_name = "octagon.obj";
-  const std::unique_ptr<Mesh> mesh(DecodeObjWithPolygons<Mesh>(file_name));
+  constexpr bool kRegularizeQuads = false;
+  constexpr bool kStoreAddedEdgesPerVertex = false;
+  const std::unique_ptr<Mesh> mesh(DecodeObjWithPolygons<Mesh>(
+      file_name, kRegularizeQuads, kStoreAddedEdgesPerVertex));
   ASSERT_NE(mesh, nullptr) << "Failed to load test model " << file_name;
 
   ASSERT_EQ(mesh->num_attributes(), 2);

src/draco/io/obj_encoder.cc

@@ -129,18 +129,23 @@ bool ObjEncoder::GetAddedEdges() {
   if (!mesh_metadata) {
     return true;
   }
-  const AttributeMetadata *att_metadata =
-      mesh_metadata->GetAttributeMetadataByStringEntry("name", "added_edges");
-  if (!att_metadata) {
-    return true;
+
+  // Try to get a per-corner attribute describing added edges.
+  {
+    const AttributeMetadata *att_metadata =
+        mesh_metadata->GetAttributeMetadataByStringEntry("name", "added_edges");
+    if (att_metadata) {
+      const auto att =
+          in_mesh_->GetAttributeByUniqueId(att_metadata->att_unique_id());
+      if (att->size() == 0 || att->num_components() != 1 ||
+          att->data_type() != DataType::DT_UINT8) {
+        return false;
+      }
+      added_edges_att_ = att;
+      return true;
+    }
   }
-  const auto att =
-      in_mesh_->GetAttributeByUniqueId(att_metadata->att_unique_id());
-  if (att->size() == 0 || att->num_components() != 1 ||
-      att->data_type() != DataType::DT_UINT8) {
-    return false;
-  }
-  added_edges_att_ = att;
+
   return true;
 }
 
@@ -420,6 +425,16 @@ void ObjEncoder::EncodeInt(int32_t val) {
   buffer()->Encode(num_buffer_, strlen(num_buffer_));
 }
 
+bool ObjEncoder::IsNewEdge(const CornerTable &ct, CornerIndex ci) const {
+  const PointIndex pi = in_mesh_->CornerToPointId(ci);
+  if (added_edges_att_ != nullptr) {
+    uint8_t value;
+    added_edges_att_->GetMappedValue(pi, &value);
+    return value == 1;
+  }
+  return false;
+}
+
 void ObjEncoder::FindOriginalFaceEdges(FaceIndex face_index,
                                        const CornerTable &corner_table,
                                        std::vector<bool> *triangle_visited,
@@ -432,16 +447,13 @@ void ObjEncoder::FindOriginalFaceEdges(FaceIndex face_index,
   const Mesh::Face &face = in_mesh_->face(face_index);
   for (size_t c = 0; c < 3; c++) {
     // Check for added edge using this corner.
-    const PointIndex pi = face[c];
-    uint8_t is_new_edge;
-    added_edges_att_->GetMappedValue(pi, &is_new_edge);
     const CornerIndex ci = corner_table.FirstCorner(face_index) + c;
     const CornerIndex co = corner_table.Opposite(ci);
+    bool is_new_edge = IsNewEdge(corner_table, ci);
 
     // Check for the new edge using the opposite corner.
     if (!is_new_edge && co != kInvalidCornerIndex) {
-      const PointIndex pi = in_mesh_->CornerToPointId(co);
-      added_edges_att_->GetMappedValue(pi, &is_new_edge);
+      is_new_edge = IsNewEdge(corner_table, co);
     }
     // The new edge may become a boundary edge when a degenerate triangle
     // created by polygon triangulation is removed by Draco encoder, hence |co|

src/draco/io/obj_encoder.h

@@ -64,6 +64,7 @@ class ObjEncoder {
   void EncodeFloat(float val);
   void EncodeFloatList(float *vals, int num_vals);
   void EncodeInt(int32_t val);
+  bool IsNewEdge(const CornerTable &ct, CornerIndex ci) const;
   void FindOriginalFaceEdges(FaceIndex face_index,
                              const CornerTable &corner_table,
                              std::vector<bool> *triangle_visited,
@@ -76,7 +77,8 @@ class ObjEncoder {
   const PointAttribute *normal_att_;
   const PointAttribute *material_att_;
   const PointAttribute *sub_obj_att_;
-  // Stores triangulation information used for polygon reconstruction.
+
+  // Stores per-corner triangulation information for polygon reconstruction.
   const PointAttribute *added_edges_att_;
 
   // Buffer used for encoding float/int numbers.

src/draco/io/obj_encoder_test.cc

@@ -29,6 +29,8 @@ namespace draco {
 class ObjEncoderTest : public ::testing::Test {
  protected:
   void CompareMeshes(const Mesh *mesh0, const Mesh *mesh1) {
+    ASSERT_NE(mesh0, nullptr);
+    ASSERT_NE(mesh1, nullptr);
     ASSERT_EQ(mesh0->num_faces(), mesh1->num_faces());
     ASSERT_EQ(mesh0->num_attributes(), mesh1->num_attributes());
     for (size_t att_id = 0; att_id < mesh0->num_attributes(); ++att_id) {
@@ -117,6 +119,9 @@ TEST_F(ObjEncoderTest, TestObjOctagonPreserved) {
   ASSERT_NE(mesh, nullptr);
   ASSERT_EQ(mesh->num_faces(), 6);
   ASSERT_EQ(mesh->NumNamedAttributes(GeometryAttribute::GENERIC), 1);
+  ASSERT_NE(mesh->GetMetadata()->GetAttributeMetadataByStringEntry(
+                "name", "added_edges"),
+            nullptr);
 
   // Reconstruct octagon and encode it into an OBJ file.
   draco::ObjEncoder obj_encoder;

src/draco/io/scene_io.cc

@@ -17,6 +17,7 @@
 #include <string>
 
 #ifdef DRACO_TRANSCODER_SUPPORTED
+#include "draco/io/file_utils.h"
 #include "draco/io/gltf_decoder.h"
 #include "draco/io/gltf_encoder.h"
 #include "draco/io/obj_encoder.h"

src/draco/io/texture_io.cc

@@ -16,16 +16,138 @@
 
 #ifdef DRACO_TRANSCODER_SUPPORTED
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+#include <array>
+#include <cstdint>
+#include <cstring>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "draco/io/basis_decoder.h"
+#include "draco/io/basis_encoder.h"
+#include "draco/io/file_writer_utils.h"
+#include "draco/io/jpeg_decoder.h"
+#include "draco/io/jpeg_encoder.h"
+#include "draco/io/png_decoder.h"
+#include "draco/io/png_encoder.h"
+#include "draco/io/texture_image_encoder.h"
+#include "draco/io/webp_decoder.h"
+#include "draco/io/webp_encoder.h"
+#include "draco/texture/color.h"
+#include "draco/texture/texture_utils.h"
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 #include "draco/io/file_utils.h"
 
 namespace draco {
 
 namespace {
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+void CreateSourceImage(const std::vector<uint8_t> &encoded_data, int bit_depth,
+                       const draco::Texture &texture,
+                       SourceImage *out_source_image) {
+  std::vector<uint8_t> &data = out_source_image->MutableEncodedData();
+  data = encoded_data;
+
+  out_source_image->set_width(texture.width());
+  out_source_image->set_height(texture.height());
+  out_source_image->set_bit_depth(bit_depth);
+
+  const uint64_t hash = draco::TextureUtils::HashTexture(texture).value();
+  out_source_image->set_decoded_data_hash(hash);
+}
+
+StatusOr<ImageFormat> ImageFormatFromBuffer(
+    const std::vector<uint8_t> &buffer) {
+  if (buffer.size() > 4) {
+    // These bytes are the Start of Image (SOI) and End of Image (EOI) markers
+    // in a JPEG data stream.
+    const std::array<uint8_t, 2> kJpegSOIMarker = {0xFF, 0xD8};
+    const std::array<uint8_t, 2> kJpegEOIMarker = {0xFF, 0xD9};
+
+    if (!memcmp(buffer.data(), kJpegSOIMarker.data(), kJpegSOIMarker.size()) &&
+        !memcmp(buffer.data() + buffer.size() - 2, kJpegEOIMarker.data(),
+                kJpegEOIMarker.size())) {
+      return ImageFormat::JPEG;
+    }
+  }
+
+  if (buffer.size() > 2) {
+    // For Binomial Basis format input the stream always begins with
+    // the signature 'B' * 256 + 's', or 0x4273.
+    const std::array<uint8_t, 2> kBasisSignature = {0x42, 0x73};
+    if (!memcmp(buffer.data(), kBasisSignature.data(),
+                kBasisSignature.size())) {
+      return ImageFormat::BASIS;
+    }
+  }
+
+  if (buffer.size() > 4) {
+    // For Binomial Basis/KTX2 format input the stream begins with 0xab 0x4b
+    // 0x54 0x58.
+    const std::array<uint8_t, 4> kKtx2Signature = {0xab, 0x4b, 0x54, 0x58};
+    if (!memcmp(buffer.data(), kKtx2Signature.data(), kKtx2Signature.size())) {
+      return ImageFormat::BASIS;
+    }
+  }
+
+  if (buffer.size() > 8) {
+    // The first eight bytes of a PNG stream always contain these values:
+    const std::array<uint8_t, 8> kPngSignature = {0x89, 0x50, 0x4e, 0x47,
+                                                  0x0d, 0x0a, 0x1a, 0x0a};
+    if (!memcmp(buffer.data(), kPngSignature.data(), kPngSignature.size())) {
+      return ImageFormat::PNG;
+    }
+  }
+
+  if (buffer.size() > 12) {
+    // The WebP signature bytes are: RIFF 0 0 0 0 WEBP. The 0's are where WebP
+    // size information is encoded in the stream, but the check here just looks
+    // for RIFF and WEBP.
+    const std::array<uint8_t, 4> kRIFF = {0x52, 0x49, 0x46, 0x46};
+    const std::array<uint8_t, 4> kWEBP = {0x57, 0x45, 0x42, 0x50};
+
+    if (!memcmp(buffer.data(), kRIFF.data(), kRIFF.size()) &&
+        !memcmp(buffer.data() + 8, kWEBP.data(), kWEBP.size())) {
+      return ImageFormat::WEBP;
+    }
+  }
+
+  return Status(Status::DRACO_ERROR, "Unknown image format.");
+}
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 StatusOr<std::unique_ptr<Texture>> CreateDracoTextureInternal(
     const std::vector<uint8_t> &image_data, SourceImage *out_source_image) {
   std::unique_ptr<Texture> draco_texture(new Texture());
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+
+  DRACO_ASSIGN_OR_RETURN(const auto format, ImageFormatFromBuffer(image_data));
+
+  if (format == ImageFormat::BASIS) {
+    DRACO_RETURN_IF_ERROR(BasisDecoder::DecodeFromBuffer(
+        image_data, draco_texture->GetMutableRGBAImage()));
+  } else if (format == ImageFormat::JPEG) {
+    DRACO_RETURN_IF_ERROR(JpegDecoder::DecodeFromBuffer(
+        image_data, draco_texture->GetMutableRGBAImage()));
+  } else if (format == ImageFormat::PNG) {
+    DRACO_RETURN_IF_ERROR(PngDecoder::DecodeFromBuffer(
+        image_data, draco_texture->GetMutableRGBAImage()));
+  } else if (format == ImageFormat::WEBP) {
+    DRACO_RETURN_IF_ERROR(WebpDecoder::DecodeFromBuffer(
+        image_data, draco_texture->GetMutableRGBAImage()));
+  } else {
+    return Status(Status::DRACO_ERROR, "Invalid input texture format.");
+  }
+
+  CreateSourceImage(image_data, /*bit_depth=*/8, *draco_texture,
+                    out_source_image);
+#else
   out_source_image->MutableEncodedData() = image_data;
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
   return std::move(draco_texture);
 }
 
@@ -61,6 +183,198 @@ StatusOr<std::unique_ptr<Texture>> ReadTextureFromBuffer(
   return texture;
 }
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+Status WriteTextureToFile(const std::string &file_name,
+                          const Texture &texture) {
+  return WriteTextureToFile(file_name, texture, 4);
+}
+
+Status WriteTextureToFile(const std::string &file_name, const Texture &texture,
+                          int num_channels) {
+  if (TextureUtils::GetFormat(LowercaseFileExtension(file_name)) !=
+      TextureUtils::GetTargetFormat(texture)) {
+    return Status(Status::DRACO_ERROR,
+                  "Inconsistent image file extension and texture settings.");
+  }
+  std::vector<uint8_t> buffer;
+  DRACO_RETURN_IF_ERROR(WriteTextureToBuffer(texture, num_channels, &buffer));
+
+  // Create directories if needed.
+  if (!CheckAndCreatePathForFile(file_name)) {
+    return Status(Status::DRACO_ERROR, "Failed to create output directories.");
+  }
+
+  if (!WriteBufferToFile(buffer.data(), buffer.size(), file_name)) {
+    return Status(Status::DRACO_ERROR, "Failed to write image.");
+  }
+
+  return OkStatus();
+}
+
+// Returns true if the |texture| contains exactly the same data as its source
+// image.
+StatusOr<bool> IsTextureEquivalentToSource(const Texture &texture) {
+  const SourceImage &si = texture.source_image();
+  if (si.decoded_data_hash() == 0) {
+    return false;
+  }
+  // Ensure the source and target texture formats are the same.
+  if (TextureUtils::GetTargetFormat(texture) !=
+      TextureUtils::GetSourceFormat(texture)) {
+    return false;
+  }
+  // TODO(fgalligan): Need to check with 16bit textures.
+  DRACO_ASSIGN_OR_RETURN(const uint64_t texture_hash,
+                         TextureUtils::HashTexture(texture));
+
+  // TODO(ostava): Handle hash conflicts.
+  return texture_hash == si.decoded_data_hash();
+}
+
+Status WriteTextureToBuffer(const Texture &texture, int num_channels,
+                            std::vector<uint8_t> *buffer) {
+  // Check if the |texture| already has encoded image data that can be used
+  // instead of encoding the image.
+  if (!texture.GetEncodedImages().empty()) {
+    // Compute hash of the uncompressed image and use it to find encoded image.
+    DRACO_ASSIGN_OR_RETURN(const uint64_t texture_hash,
+                           TextureUtils::HashTexture(texture));
+    const TextureImageEncoder::Input input = {&texture, texture_hash,
+                                              num_channels};
+    const EncodedImage *const image = TextureImageEncoder::FindEncodedImage(
+        texture.GetEncodedImages(), input);
+    if (image != nullptr) {
+      // Use an existing encoded image data.
+      const auto &data = image->GetData();
+      buffer->insert(buffer->end(), data.begin(), data.end());
+      return OkStatus();
+    }
+
+    // Texture has encoded images but none are usable. Texture may have been
+    // modified, invalidating encoded images and leading to extra memory usage.
+    // TODO(vytyaz): Revisit once encoded images are passed between modules.
+    return Status(Status::DRACO_ERROR, "Encoded images are unusable.");
+  }
+
+  // Check if the |texture| is equivalent to its source.
+  DRACO_ASSIGN_OR_RETURN(const bool textures_are_equivalent,
+                         IsTextureEquivalentToSource(texture));
+  ImageCompressionSpeed updated_speed =
+      texture.GetCompressionOptions().image_compression_speed;
+  const ImageFormat image_format = TextureUtils::GetTargetFormat(texture);
+  if (updated_speed == ImageCompressionSpeed::LOSSLESS ||
+      updated_speed == ImageCompressionSpeed::LOSSLESS_SLOW) {
+    // For lossless codecs set speed to NORMAL or SLOW. For lossy codecs set
+    // speed to COPY.
+    // TODO(b/165815819): Right now we don't use COPY mode if the texture
+    // content changed, even if the codec is lossy. This should be changed as
+    // part of a bigger refactoring of the image compression settings.
+    if (image_format == ImageFormat::PNG || !textures_are_equivalent) {
+      if (updated_speed == ImageCompressionSpeed::LOSSLESS) {
+        updated_speed = ImageCompressionSpeed::NORMAL;
+      } else {
+        updated_speed = ImageCompressionSpeed::SLOW;
+      }
+    } else {
+      updated_speed = ImageCompressionSpeed::COPY;
+    }
+  }
+  if (updated_speed == ImageCompressionSpeed::COPY) {
+    return CopyTextureToBuffer(texture, num_channels, buffer);
+  }
+
+  ImageCompressionOptions encode_options = texture.GetCompressionOptions();
+  encode_options.image_compression_speed = updated_speed;
+
+  ColorFormat color_format = ColorFormat::RGBA;
+
+  if (num_channels == 1) {
+    color_format = ColorFormat::Monochrome;
+  } else if (num_channels == 3) {
+    color_format = ColorFormat::RGB;
+  }
+
+  if (image_format == ImageFormat::BASIS) {
+    DRACO_RETURN_IF_ERROR(Ktx2Encoder::EncodeToBuffer(
+        color_format, texture.GetCompressionOptions(), texture.GetRGBAImage(),
+        buffer));
+  } else if (image_format == ImageFormat::JPEG) {
+    DRACO_RETURN_IF_ERROR(JpegEncoder::EncodeToBuffer(
+        color_format, encode_options, texture.GetRGBAImage(), buffer));
+  } else if (image_format == ImageFormat::PNG) {
+    DRACO_RETURN_IF_ERROR(PngEncoder::EncodeToBuffer(
+        color_format, encode_options, texture.GetRGBAImage(), buffer));
+  } else if (image_format == ImageFormat::WEBP) {
+    DRACO_RETURN_IF_ERROR(WebpEncoder::EncodeToBuffer(
+        color_format, encode_options, texture.GetRGBAImage(), buffer));
+  }
+
+  if (textures_are_equivalent) {
+    const SourceImage &source_image = texture.source_image();
+
+    // Check if the source data is smaller than compressed data in memory. If
+    // the source data is smaller write that data out instead of the compressed
+    // data in memory.
+    if (!source_image.encoded_data().empty() &&
+        source_image.encoded_data().size() < buffer->size()) {
+      *buffer = source_image.encoded_data();
+    } else if (!source_image.filename().empty() &&
+               GetFileSize(source_image.filename()) < buffer->size()) {
+      ReadFileToBuffer(source_image.filename(), buffer);
+    }
+  }
+
+  return OkStatus();
+}
+
+Status CopyTextureToBuffer(const Texture &texture, int num_channels,
+                           std::vector<uint8_t> *buffer) {
+  const SourceImage &source_image = texture.source_image();
+  DRACO_ASSIGN_OR_RETURN(const uint64_t hash,
+                         TextureUtils::HashTexture(texture));
+  const ImageFormat image_format = TextureUtils::GetTargetFormat(texture);
+  if (!source_image.encoded_data().empty() ||
+      !source_image.filename().empty()) {
+    if (source_image.width() != texture.width() ||
+        source_image.height() != texture.height()) {
+      return Status(Status::DRACO_ERROR,
+                    "Cannot copy texture because resolution is different.");
+    }
+    if (!source_image.filename().empty()) {
+      if (TextureUtils::GetFormat(LowercaseFileExtension(
+              source_image.filename())) != image_format) {
+        return Status(Status::DRACO_ERROR,
+                      "Cannot copy texture because source and target file "
+                      "formats are different.");
+      }
+    }
+    if (!source_image.mime_type().empty()) {
+      if (TextureUtils::GetFormat(LowercaseMimeTypeExtension(
+              source_image.mime_type())) != image_format) {
+        return Status(Status::DRACO_ERROR,
+                      "Cannot copy texture because source and target file "
+                      "formats are different.");
+      }
+    }
+    if (hash != source_image.decoded_data_hash()) {
+      return Status(Status::DRACO_ERROR,
+                    "Cannot copy texture because it has been modified.");
+    }
+
+    // Check if source image already has the encoded data.
+    if (!source_image.encoded_data().empty()) {
+      *buffer = source_image.encoded_data();
+    } else {
+      if (!ReadFileToBuffer(source_image.filename(), buffer)) {
+        return Status(Status::DRACO_ERROR, "Failed to read source image");
+      }
+    }
+  } else {
+    return Status(Status::DRACO_ERROR, "No texture source data to copy.");
+  }
+  return OkStatus();
+}
+#else   // !DRACO_SIMPLIFIER_SUPPORTED
 Status WriteTextureToFile(const std::string &file_name,
                           const Texture &texture) {
   std::vector<uint8_t> buffer;
@@ -88,6 +402,7 @@ Status WriteTextureToBuffer(const Texture &texture,
   }
   return OkStatus();
 }
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
 
 }  // namespace draco
 

src/draco/io/texture_io.h

@@ -46,9 +46,35 @@ StatusOr<std::unique_ptr<Texture>> ReadTextureFromBuffer(
 // with "basis" extension. Returns an error status if the writing failed.
 Status WriteTextureToFile(const std::string &file_name, const Texture &texture);
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+// Writes a texture into a file in a specified format defined by the
+// |num_channels|. The function will try to convert the data in |texture| to the
+// desired output format before the texture is saved to the file. If the
+// conversion fails, an error status is returned. Currently, the only allowed
+// options are:
+//   - |num_channels| == 3 | 4
+//   - |num_channels| == 1 saves the R channel and ignores G and B channels.
+Status WriteTextureToFile(const std::string &file_name, const Texture &texture,
+                          int num_channels);
+
+// Writes a |texture| into |buffer| specified by the parameters (see above
+// comments). The image format is specified in |texture|. Supported image types
+// are PNG, JPEG, and KTX2 (with Basis compression). Note that images with
+// Basis compression can only be saved in KTX2 format.
+Status WriteTextureToBuffer(const Texture &texture, int num_channels,
+                            std::vector<uint8_t> *buffer);
+
+// Copies a texture into |buffer|. Only copies the source if output
+// characteristics match the source characteristics. The function will fail if
+// the source image format is different from the image type in |texture|
+// compression settings.
+Status CopyTextureToBuffer(const Texture &texture, int num_channels,
+                           std::vector<uint8_t> *buffer);
+#else
 // Writes a |texture| into |buffer|.
 Status WriteTextureToBuffer(const Texture &texture,
                             std::vector<uint8_t> *buffer);
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
 
 }  // namespace draco
 

src/draco/io/texture_io_test.cc

@@ -23,9 +23,568 @@
 
 #include "draco/core/draco_test_utils.h"
 #include "draco/io/file_utils.h"
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+#include "draco/io/texture_image_encoder.h"
+#include "draco/texture/texture_utils.h"
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
 
 namespace {
 
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+TEST(TextureIoTest, TestTextureIO) {
+  // A simple test that verifies that the textures are loaded and saved using
+  // the texture_io.h API.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  DRACO_ASSIGN_OR_ASSERT(std::unique_ptr<draco::Texture> texture,
+                         draco::ReadTextureFromFile(file_name));
+  ASSERT_NE(texture, nullptr);
+
+  // Expected dimensions of the texture are 256x256
+  ASSERT_EQ(texture->width(), 256);
+  ASSERT_EQ(texture->height(), 256);
+
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.png");
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture));
+}
+
+TEST(TextureIoTest, TestBadTextureIO) {
+  // A simple test that verifies that we cannot load file that does not exist.
+  const std::string file_name = draco::GetTestFileFullPath("test_bad.png");
+  const auto maybe_texture = draco::ReadTextureFromFile(file_name);
+  ASSERT_FALSE(maybe_texture.status().ok());
+}
+
+TEST(TextureIoTest, TestTransparentTexture) {
+  // Verify that we can load and save a texture with transparent pixels.
+  const std::string file_name =
+      draco::GetTestFileFullPath("test_transparent.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  // First pixel should be fully transparent.
+  ASSERT_EQ(texture->GetPixelUnsafe(0, 0).a, 0);
+
+  // Save the texture and load it again and ensure the transparency has been
+  // preserved.
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.png");
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture));
+  std::unique_ptr<draco::Texture> texture_new =
+      draco::ReadTextureFromFile(out_file_name).value();
+  ASSERT_NE(texture_new, nullptr);
+  ASSERT_EQ(texture->GetPixelUnsafe(0, 0).a,
+            texture_new->GetPixelUnsafe(0, 0).a);
+}
+
+TEST(TextureIoTest, TestSaveToRGB) {
+  // Tries to save a RGBA texture to an RGB format and read it back.
+  const std::string file_name =
+      draco::GetTestFileFullPath("test_transparent.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture, 3));
+  std::unique_ptr<draco::Texture> texture_new =
+      draco::ReadTextureFromFile(out_file_name).value();
+  ASSERT_NE(texture_new, nullptr);
+
+  // Ensure all pixels are the same except of their alpha channel.
+  for (int y = 0; y < texture->height(); ++y) {
+    for (int x = 0; x < texture->width(); ++x) {
+      const draco::RGBA orig_pixel = texture->GetPixelUnsafe(x, y);
+      const draco::RGBA new_pixel = texture_new->GetPixelUnsafe(x, y);
+      ASSERT_EQ(new_pixel.r, orig_pixel.r);
+      ASSERT_EQ(new_pixel.g, orig_pixel.g);
+      ASSERT_EQ(new_pixel.b, orig_pixel.b);
+      ASSERT_EQ(new_pixel.a, 255);
+    }
+  }
+}
+
+TEST(TextureIoTest, TestExtensionMismatchFails) {
+  // Tries to save texture loaded from PNG as JPEG without changing image type
+  // in texture compression settings and checks that operation fails.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  const draco::Status status =
+      draco::WriteTextureToFile(out_file_name, *texture, 3);
+  ASSERT_FALSE(status.ok());
+  ASSERT_EQ(status.error_msg_string(),
+            "Inconsistent image file extension and texture settings.");
+}
+
+TEST(TextureIoTest, TestSaveToJpeg) {
+  // Tries to save a RGB texture to a Jpg file and read it back.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  texture->GetMutableCompressionOptions().target_image_format =
+      draco::ImageFormat::JPEG;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture, 3));
+  std::unique_ptr<draco::Texture> texture_new =
+      draco::ReadTextureFromFile(out_file_name).value();
+  ASSERT_NE(texture_new, nullptr);
+
+  // Expected dimensions of the texture are 256x256
+  ASSERT_EQ(texture->width(), 256);
+  ASSERT_EQ(texture->height(), 256);
+}
+
+TEST(TextureIoTest, TestCompressionSpeed) {
+  // Writes three png files and checks that size of the files match expections
+  // of SLOW < NORMAL < FAST.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  const std::string slow_file_name =
+      draco::GetTestTempFileFullPath("out_slow.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::SLOW;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(slow_file_name, *texture, 3));
+  std::unique_ptr<draco::Texture> texture_slow =
+      draco::ReadTextureFromFile(slow_file_name).value();
+  ASSERT_NE(texture_slow, nullptr);
+
+  const std::string norm_file_name =
+      draco::GetTestTempFileFullPath("out_norm.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(norm_file_name, *texture, 3));
+  std::unique_ptr<draco::Texture> texture_norm =
+      draco::ReadTextureFromFile(norm_file_name).value();
+  ASSERT_NE(texture_norm, nullptr);
+
+  const std::string fast_file_name =
+      draco::GetTestTempFileFullPath("out_fast.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::FAST;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(fast_file_name, *texture, 3));
+  std::unique_ptr<draco::Texture> texture_fast =
+      draco::ReadTextureFromFile(fast_file_name).value();
+  ASSERT_NE(texture_fast, nullptr);
+
+  ASSERT_LT(draco::GetFileSize(slow_file_name),
+            draco::GetFileSize(norm_file_name));
+  ASSERT_LE(draco::GetFileSize(norm_file_name),
+            draco::GetFileSize(fast_file_name));
+}
+
+TEST(TextureIoTest, TestGrayscaleIO) {
+  // Tests loading and saving of grayscale images
+  const std::string file_name_png =
+      draco::GetTestFileFullPath("test_grayscale.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name_png).value();
+  ASSERT_NE(texture, nullptr);
+
+  const std::string out_file_name_png =
+      draco::GetTestTempFileFullPath("out_grayscale.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name_png, *texture, 1));
+
+  const std::string file_name_jpg =
+      draco::GetTestFileFullPath("test_grayscale.jpg");
+  texture = draco::ReadTextureFromFile(file_name_jpg).value();
+  ASSERT_NE(texture, nullptr);
+
+  const std::string out_file_name_jpg =
+      draco::GetTestTempFileFullPath("out_grayscale.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name_jpg, *texture, 1));
+}
+
+TEST(TextureIoTest, TestRgbaToGrayscale) {
+  // Tests that the R channel of RGBA image is used when saving as grayscale.
+  constexpr uint8_t kOpaqueAlpha = 0xFF;
+
+  // Read RGBA texture from file.
+  DRACO_ASSIGN_OR_ASSERT(
+      std::unique_ptr<draco::Texture> texture,
+      draco::ReadTextureFromFile(draco::GetTestFileFullPath("test.png")));
+
+  // Check an RGBA texture pixel value.
+  constexpr uint8_t kExpectedRedValue = 146;
+  ASSERT_EQ(texture->GetPixelUnsafe(50, 50).r, kExpectedRedValue);
+  ASSERT_EQ(texture->GetPixelUnsafe(50, 50).g, 203);
+  ASSERT_EQ(texture->GetPixelUnsafe(50, 50).b, 229);
+  ASSERT_EQ(texture->GetPixelUnsafe(50, 50).a, kOpaqueAlpha);
+
+  // Write the RGBA texture to file as grayscale.
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(
+      draco::GetTestTempFileFullPath("out_grayscale.png"), *texture, 1));
+
+  // Read the grayscale texture from file.
+  DRACO_ASSIGN_OR_ASSERT(
+      std::unique_ptr<draco::Texture> grayscale,
+      draco::ReadTextureFromFile(
+          draco::GetTestTempFileFullPath("out_grayscale.png")));
+
+  // Check the grayscale texture pixel value. Draco grayscale preserves
+  // only the R channel when working with grayscale, but image decoders output
+  // monochrome to RGBA with the R, G, and B channels equal and A set to opaque.
+  const draco::RGBA gray_pixel = grayscale->GetPixelUnsafe(50, 50);
+  ASSERT_EQ(gray_pixel.r, kExpectedRedValue);
+  ASSERT_EQ(gray_pixel.g, kExpectedRedValue);
+  ASSERT_EQ(gray_pixel.r, kExpectedRedValue);
+  ASSERT_EQ(gray_pixel.a, kOpaqueAlpha);
+}
+
+TEST(TextureIoTest, TestTextureNoPassThruPng) {
+  // A simple test that writes the compressed png data out, as that is smaller
+  // than the source png data.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture, 3));
+  ASSERT_GE(draco::GetFileSize(file_name), draco::GetFileSize(out_file_name));
+}
+
+TEST(TextureIoTest, TestTexturePassThruPng) {
+  // A simple test that writes the source png data out, as that is smaller
+  // than the compressed png data.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::FAST;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture, 3));
+  ASSERT_EQ(draco::GetFileSize(file_name), draco::GetFileSize(out_file_name));
+}
+
+TEST(TextureIoTest, TestTextureNoPassThruJpg) {
+  // A simple test that writes the compressed jpg data out, as that is smaller
+  // than the source data.
+  const std::string fast_file_name = draco::GetTestFileFullPath("fast.jpg");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(fast_file_name).value();
+  ASSERT_NE(texture, nullptr);
+  const std::string normal_file_name =
+      draco::GetTestTempFileFullPath("normal.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(normal_file_name, *texture, 3));
+  ASSERT_GT(draco::GetFileSize(fast_file_name),
+            draco::GetFileSize(normal_file_name));
+}
+
+TEST(TextureIoTest, TestTexturePassThruJpeg) {
+  // A simple test that writes source jpg data out, as that is smaller
+  // than the compressed jpg data.
+  const std::string normal_file_name = draco::GetTestFileFullPath("normal.jpg");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(normal_file_name).value();
+  ASSERT_NE(texture, nullptr);
+  const std::string fast_file_name = draco::GetTestTempFileFullPath("fast.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::FAST;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(fast_file_name, *texture, 3));
+  ASSERT_EQ(draco::GetFileSize(normal_file_name),
+            draco::GetFileSize(fast_file_name));
+}
+
+TEST(TextureIoTest, TestTextureToBuffer) {
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture, 3));
+  std::vector<uint8_t> buffer;
+  DRACO_ASSERT_OK(WriteTextureToBuffer(*texture, 3, &buffer));
+  ASSERT_EQ(buffer.size(), draco::GetFileSize(out_file_name));
+}
+
+TEST(TextureIoTest, TestTextureToBufferWithEncodedImages) {
+  // Read texture from file.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  // Check that writing texture to buffer succeeds.
+  std::vector<uint8_t> buffer;
+  DRACO_ASSERT_OK(WriteTextureToBuffer(*texture, 3, &buffer));
+  const int buffer_size = buffer.size();
+
+  // Add encoded image to texture and check that writing to buffer succeeds.
+  DRACO_ASSIGN_OR_ASSERT(const uint64_t texture_hash,
+                         draco::TextureUtils::HashTexture(*texture));
+  const draco::TextureImageEncoder::Input input = {texture.get(), texture_hash,
+                                                   3};
+  DRACO_ASSIGN_OR_ASSERT(auto image, draco::TextureImageEncoder::Encode(input));
+  texture->GetMutableEncodedImages().push_back(std::move(image));
+  buffer.clear();
+  DRACO_ASSERT_OK(WriteTextureToBuffer(*texture, 3, &buffer));
+  ASSERT_EQ(buffer.size(), buffer_size);
+
+  // Modify texture image, invalidating the encoded image, and check that
+  // writing to buffer fails.
+  const draco::RGBA red = draco::RGBA(255, 0, 0, 255);
+  texture->SetPixel(0, 0, red);
+  buffer.clear();
+  ASSERT_FALSE(WriteTextureToBuffer(*texture, 3, &buffer).ok());
+
+  // Remove encoded image from texture and check that writing succeeds.
+  texture->GetMutableEncodedImages().clear();
+  DRACO_ASSERT_OK(WriteTextureToBuffer(*texture, 3, &buffer));
+  ASSERT_NE(buffer.size(), 0);
+}
+
+TEST(TextureIoTest, TestTextureTranscodeJpgToPng) {
+  // Tests that a "jpg" texture is transcoded to a "png" texture.
+  const std::string source_filename = draco::GetTestFileFullPath("normal.jpg");
+  DRACO_ASSIGN_OR_ASSERT(std::unique_ptr<draco::Texture> texture,
+                         draco::ReadTextureFromFile(source_filename));
+  const std::string target_filename =
+      draco::GetTestTempFileFullPath("normal.png");
+  draco::ImageCompressionOptions options;
+  options.target_image_format = draco::ImageFormat::PNG;
+  texture->SetCompressionOptions(options);
+
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(target_filename, *texture, 3));
+
+  // We expect the source "jpg" to be smaller than the target "png".
+  ASSERT_LT(draco::GetFileSize(source_filename),
+            draco::GetFileSize(target_filename));
+
+  // Ensure that the target is indeed "png".
+  DRACO_ASSIGN_OR_ASSERT(std::unique_ptr<draco::Texture> transcoded_texture,
+                         draco::ReadTextureFromFile(target_filename));
+  ASSERT_EQ(transcoded_texture->source_image().mime_type(), "image/png");
+}
+
+TEST(TextureIoTest, TestTextureCopyJpeg) {
+  const std::string source_filename = draco::GetTestFileFullPath("fast.jpg");
+  DRACO_ASSIGN_OR_ASSERT(std::unique_ptr<draco::Texture> texture,
+                         draco::ReadTextureFromFile(source_filename));
+  const std::string copy_filename = draco::GetTestTempFileFullPath("copy.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::COPY;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(copy_filename, *texture, 3));
+  ASSERT_EQ(draco::GetFileSize(source_filename),
+            draco::GetFileSize(copy_filename));
+}
+
+TEST(TextureIoTest, TestTextureCopyPng) {
+  const std::string source_filename = draco::GetTestFileFullPath("test.png");
+  DRACO_ASSIGN_OR_ASSERT(std::unique_ptr<draco::Texture> texture,
+                         draco::ReadTextureFromFile(source_filename));
+  const std::string copy_filename = draco::GetTestTempFileFullPath("copy.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::COPY;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(copy_filename, *texture, 3));
+  ASSERT_EQ(draco::GetFileSize(source_filename),
+            draco::GetFileSize(copy_filename));
+}
+
+TEST(TextureIoTest, TestTextureCopyFail) {
+  const std::string source_filename = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(source_filename).value();
+  ASSERT_NE(texture, nullptr);
+  const draco::RGBA rgba = draco::RGBA(45, 90, 180, 210);
+  texture->SetPixelUnsafe(1, 1, rgba);
+
+  const std::string copy_filename = draco::GetTestTempFileFullPath("copy.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::COPY;
+  ASSERT_FALSE(draco::WriteTextureToFile(copy_filename, *texture, 3).ok());
+}
+
+// Tests that LOSSLESS and LOSSLESS_SLOW mode for jpeg files will just copy the
+// image.
+TEST(TextureIoTest, TestLosslessJpeg) {
+  const std::string source_filename = draco::GetTestFileFullPath("fast.jpg");
+  DRACO_ASSIGN_OR_ASSERT(std::unique_ptr<draco::Texture> texture,
+                         draco::ReadTextureFromFile(source_filename));
+  const std::string copy_filename = draco::GetTestTempFileFullPath("copy.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::LOSSLESS;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(copy_filename, *texture, 3));
+  ASSERT_EQ(draco::GetFileSize(source_filename),
+            draco::GetFileSize(copy_filename));
+
+  const std::string copy2_filename =
+      draco::GetTestTempFileFullPath("copy2.jpg");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::LOSSLESS_SLOW;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(copy2_filename, *texture, 3));
+  ASSERT_EQ(draco::GetFileSize(source_filename),
+            draco::GetFileSize(copy2_filename));
+}
+
+// Tests that LOSSLESS mode for png files will write out the new the image, if
+// the new image is smaller than the source image. Tests that LOSSLESS_SLOW mode
+// creates images smalller than LOSSLESS mode.
+TEST(TextureIoTest, TestLosslessPng) {
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  const std::string out_file_name = draco::GetTestTempFileFullPath("out.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::LOSSLESS;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(out_file_name, *texture, 3));
+  ASSERT_GE(draco::GetFileSize(file_name), draco::GetFileSize(out_file_name));
+
+  const std::string lossless_slow_file_name =
+      draco::GetTestTempFileFullPath("lossless_slow.png");
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::LOSSLESS_SLOW;
+  DRACO_ASSERT_OK(
+      draco::WriteTextureToFile(lossless_slow_file_name, *texture, 3));
+  ASSERT_GT(draco::GetFileSize(out_file_name),
+            draco::GetFileSize(lossless_slow_file_name));
+}
+
+TEST(TextureIoTest, TestWriteToBasis) {
+  // Test encoding to KTX2 file format.
+  const std::string file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  // Write image with no mipmaps.
+  const std::string one_file_name = draco::GetTestTempFileFullPath("out.ktx2");
+  texture->GetMutableCompressionOptions().generate_mipmaps = false;
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  texture->GetMutableCompressionOptions().target_image_format =
+      draco::ImageFormat::BASIS;
+  // Check that compression reduces the file size.
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(one_file_name, *texture, 3));
+  ASSERT_GT(draco::GetFileSize(file_name), draco::GetFileSize(one_file_name));
+
+  // Write image with mipmaps.
+  const std::string mip_file_name = draco::GetTestTempFileFullPath("mip.ktx2");
+  texture->GetMutableCompressionOptions().generate_mipmaps = true;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(mip_file_name, *texture, 3));
+  // Check that compression with mipmaps increases the file size compared to
+  // compression without mipmaps, but not by too much.
+  ASSERT_GT(draco::GetFileSize(mip_file_name),
+            draco::GetFileSize(one_file_name));
+  ASSERT_LT(draco::GetFileSize(mip_file_name),
+            2 * draco::GetFileSize(one_file_name));
+}
+
+TEST(TextureIoTest, TestJpegQuality) {
+  // Test that JPEG quality has expected effect on file size.
+  const std::string test_file_name = draco::GetTestFileFullPath("test.png");
+  std::unique_ptr<draco::Texture> texture =
+      draco::ReadTextureFromFile(test_file_name).value();
+  ASSERT_NE(texture, nullptr);
+
+  // Get texture image file sizes with various JPEG qualities.
+  texture->GetMutableCompressionOptions().target_image_format =
+      draco::ImageFormat::JPEG;
+  const std::string temp_file_name = draco::GetTestTempFileFullPath("temp.jpg");
+  std::unordered_map<std::string, int> file_sizes;
+
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::SLOW;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["default slow"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::FAST;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["default fast"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["default norm"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 100;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["100 norm"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 90;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["90 norm"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 80;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["80 norm"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 60;
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::SLOW;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["60 slow"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 60;
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::FAST;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["60 fast"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 60;
+  texture->GetMutableCompressionOptions().image_compression_speed =
+      draco::ImageCompressionSpeed::NORMAL;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["60 norm"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 40;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["40 norm"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 20;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["20 norm"] = draco::GetFileSize(temp_file_name);
+
+  texture->GetMutableCompressionOptions().jpeg_quality = 0;
+  DRACO_ASSERT_OK(draco::WriteTextureToFile(temp_file_name, *texture, 3));
+  file_sizes["0 norm"] = draco::GetFileSize(temp_file_name);
+
+  // Check that default JPEG quality is determined by compression speed.
+  ASSERT_LT(file_sizes["default slow"], file_sizes["90 norm"]);
+  ASSERT_EQ(file_sizes["default norm"], file_sizes["90 norm"]);
+  ASSERT_EQ(file_sizes["default fast"], file_sizes["100 norm"]);
+
+  // Check that compression speed is irrelevant if JPEG quality is set.
+  ASSERT_EQ(file_sizes["60 slow"], file_sizes["60 norm"]);
+  ASSERT_EQ(file_sizes["60 fast"], file_sizes["60 norm"]);
+
+  // Check that compression improves as JPEG quality is reduced.
+  ASSERT_LT(file_sizes["90 norm"], file_sizes["100 norm"]);
+  ASSERT_LT(file_sizes["80 norm"], file_sizes["90 norm"]);
+  ASSERT_LT(file_sizes["60 norm"], file_sizes["80 norm"]);
+  ASSERT_LT(file_sizes["40 norm"], file_sizes["60 norm"]);
+  ASSERT_LT(file_sizes["20 norm"], file_sizes["40 norm"]);
+  ASSERT_LT(file_sizes["0 norm"], file_sizes["20 norm"]);
+}
+
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
+
 // Tests loading of textures from a buffer.
 TEST(TextureIoTest, TestLoadFromBuffer) {
   const std::string file_name = draco::GetTestFileFullPath("test.png");
@@ -42,7 +601,14 @@ TEST(TextureIoTest, TestLoadFromBuffer) {
 
   // Re-encode the texture again to ensure the content hasn't changed.
   std::vector<uint8_t> encoded_buffer;
+#ifdef DRACO_SIMPLIFIER_SUPPORTED
+  draco::ImageCompressionOptions options;
+  options.image_compression_speed = draco::ImageCompressionSpeed::COPY;
+  texture->SetCompressionOptions(options);
+  DRACO_ASSERT_OK(draco::WriteTextureToBuffer(*texture, 3, &encoded_buffer));
+#else
   DRACO_ASSERT_OK(draco::WriteTextureToBuffer(*texture, &encoded_buffer));
+#endif  // DRACO_SIMPLIFIER_SUPPORTED
 
   ASSERT_EQ(image_data.size(), encoded_buffer.size());
   for (int i = 0; i < encoded_buffer.size(); ++i) {

src/draco/io/tiny_gltf_utils.h

@@ -18,12 +18,13 @@
 #include "draco/draco_features.h"
 
 #ifdef DRACO_TRANSCODER_SUPPORTED
-#include <Eigen/Geometry>
-
+#include "Eigen/Geometry"
 #include "draco/animation/animation.h"
 #include "draco/core/status.h"
 #include "draco/core/status_or.h"
 #include "draco/material/material.h"
+
+#define TINYGLTF_ENCLOSING_NAMESPACE draco
 #include "tiny_gltf.h"
 
 namespace draco {

src/draco/javascript/emscripten/animation_decoder_webidl_wrapper.cc

@@ -1,101 +0,0 @@
-// Copyright 2017 The Draco Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-#include "draco/javascript/emscripten/animation_decoder_webidl_wrapper.h"
-
-#include <vector>
-
-#include "draco/compression/decode.h"
-#include "draco/mesh/mesh.h"
-#include "draco/mesh/mesh_stripifier.h"
-
-using draco::DecoderBuffer;
-using draco::PointAttribute;
-using draco::Status;
-
-DracoFloat32Array::DracoFloat32Array() {}
-
-float DracoFloat32Array::GetValue(int index) const { return values_[index]; }
-
-bool DracoFloat32Array::SetValues(const float *values, int count) {
-  if (values) {
-    values_.assign(values, values + count);
-  } else {
-    values_.resize(count);
-  }
-  return true;
-}
-
-AnimationDecoder::AnimationDecoder() {}
-
-// Decodes animation data from the provided buffer.
-const draco::Status *AnimationDecoder::DecodeBufferToKeyframeAnimation(
-    draco::DecoderBuffer *in_buffer, draco::KeyframeAnimation *animation) {
-  draco::DecoderOptions dec_options;
-  last_status_ = decoder_.Decode(dec_options, in_buffer, animation);
-  return &last_status_;
-}
-
-bool AnimationDecoder::GetTimestamps(const draco::KeyframeAnimation &animation,
-                                     DracoFloat32Array *timestamp) {
-  if (!timestamp) {
-    return false;
-  }
-  const int num_frames = animation.num_frames();
-  const draco::PointAttribute *timestamp_att = animation.timestamps();
-  // Timestamp attribute has only 1 component, so the number of components is
-  // equal to the number of frames.
-  timestamp->SetValues(nullptr, num_frames);
-  int entry_id = 0;
-  float timestamp_value = -1.0;
-  for (draco::PointIndex i(0); i < num_frames; ++i) {
-    const draco::AttributeValueIndex val_index = timestamp_att->mapped_index(i);
-    if (!timestamp_att->ConvertValue<float>(val_index, &timestamp_value)) {
-      return false;
-    }
-    timestamp->SetValue(entry_id++, timestamp_value);
-  }
-  return true;
-}
-
-bool AnimationDecoder::GetKeyframes(const draco::KeyframeAnimation &animation,
-                                    int keyframes_id,
-                                    DracoFloat32Array *animation_data) {
-  const int num_frames = animation.num_frames();
-  // Get animation data.
-  const draco::PointAttribute *animation_data_att =
-      animation.keyframes(keyframes_id);
-  if (!animation_data_att) {
-    return false;
-  }
-
-  const int components = animation_data_att->num_components();
-  const int num_entries = num_frames * components;
-  const int kMaxAttributeFloatValues = 4;
-
-  std::vector<float> values(components, -1.0);
-  int entry_id = 0;
-  animation_data->SetValues(nullptr, num_entries);
-  for (draco::PointIndex i(0); i < num_frames; ++i) {
-    const draco::AttributeValueIndex val_index =
-        animation_data_att->mapped_index(i);
-    if (!animation_data_att->ConvertValue<float>(val_index, &values[0])) {
-      return false;
-    }
-    for (int j = 0; j < components; ++j) {
-      animation_data->SetValue(entry_id++, values[j]);
-    }
-  }
-  return true;
-}

src/draco/javascript/emscripten/animation_decoder_webidl_wrapper.h

@@ -1,73 +0,0 @@
-// Copyright 2017 The Draco Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-#ifndef DRACO_JAVASCRIPT_EMSCRIPTEN_ANIMATION_DECODER_WEBIDL_WRAPPER_H_
-#define DRACO_JAVASCRIPT_EMSCRIPTEN_ANIMATION_DECODER_WEBIDL_WRAPPER_H_
-
-#include <vector>
-
-#include "draco/animation/keyframe_animation_decoder.h"
-#include "draco/attributes/attribute_transform_type.h"
-#include "draco/attributes/point_attribute.h"
-#include "draco/compression/config/compression_shared.h"
-#include "draco/compression/decode.h"
-#include "draco/core/decoder_buffer.h"
-
-typedef draco::AttributeTransformType draco_AttributeTransformType;
-typedef draco::GeometryAttribute draco_GeometryAttribute;
-typedef draco_GeometryAttribute::Type draco_GeometryAttribute_Type;
-typedef draco::EncodedGeometryType draco_EncodedGeometryType;
-typedef draco::Status draco_Status;
-typedef draco::Status::Code draco_StatusCode;
-
-class DracoFloat32Array {
- public:
-  DracoFloat32Array();
-  float GetValue(int index) const;
-
-  // In case |values| is nullptr, the data is allocated but not initialized.
-  bool SetValues(const float *values, int count);
-
-  // Directly sets a value for a specific index. The array has to be already
-  // allocated at this point (using SetValues() method).
-  void SetValue(int index, float val) { values_[index] = val; }
-
-  int size() const { return values_.size(); }
-
- private:
-  std::vector<float> values_;
-};
-
-// Class used by emscripten WebIDL Binder [1] to wrap calls to decode animation
-// data.
-class AnimationDecoder {
- public:
-  AnimationDecoder();
-
-  // Decodes animation data from the provided buffer.
-  const draco::Status *DecodeBufferToKeyframeAnimation(
-      draco::DecoderBuffer *in_buffer, draco::KeyframeAnimation *animation);
-
-  static bool GetTimestamps(const draco::KeyframeAnimation &animation,
-                            DracoFloat32Array *timestamp);
-
-  static bool GetKeyframes(const draco::KeyframeAnimation &animation,
-                           int keyframes_id, DracoFloat32Array *animation_data);
-
- private:
-  draco::KeyframeAnimationDecoder decoder_;
-  draco::Status last_status_;
-};
-
-#endif  // DRACO_JAVASCRIPT_EMSCRIPTEN_ANIMATION_DECODER_WEBIDL_WRAPPER_H_