Pyarelal Knowles d2b0af6915 propagate image writing failures
Modifies UpdateImageObject() so that Returning false from the
WriteImageDataFunction callback results in the WriteGltfScene*() call
returning false.

Does not call WriteImageDataFunction if there is no image data.

Adds test case serialize-image-failure to verify the callback return
code is able to cause an overall failure to save the gltf.
2022-12-29 13:50:17 -08:00
..
2020-01-18 20:31:54 +09:00
2022-12-29 13:50:17 -08:00