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Gracefully handle NaNs and Infs in gltf2 accessor bound computation

pull/3214/head
Jeremy Cytryn 2020-05-06 23:59:48 -07:00
parent aef4ecada5
commit c5a9fbd47f
2 changed files with 12 additions and 5 deletions
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13
code/AssetLib/glTF2/glTF2Exporter.cpp
View File

@ -1,4 +1,4 @@
/*
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
@ -172,6 +172,13 @@ void SetAccessorRange(Ref<Accessor> acc, void* data, size_t count,
for (unsigned int j = 0 ; j < numCompsOut ; j++) {
double valueTmp = buffer_ptr[j];
// Gracefully tolerate rogue NaN's in buffer data
// Any NaNs/Infs introduced in accessor bounds will end up in
// document and prevent rapidjson from writing out valid JSON
if (!std::isfinite(valueTmp)) {
continue;
}
if (valueTmp < acc->min[j]) {
acc->min[j] = valueTmp;
}
@ -348,7 +355,7 @@ void glTF2Exporter::GetMatTex(const aiMaterial* mat, Ref<Texture>& texture, aiTe
if (path[0] == '*') { // embedded
aiTexture* curTex = mScene->mTextures[atoi(&path[1])];
texture->source->name = curTex->mFilename.C_Str();
// The asset has its own buffer, see Image::SetData
@ -762,7 +769,7 @@ void glTF2Exporter::ExportMeshes()
for (int i = 0; i < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++i) {
if (!aim->HasTextureCoords(i))
continue;
// Flip UV y coords
if (aim -> mNumUVComponents[i] > 1) {
for (unsigned int j = 0; j < aim->mNumVertices; ++j) {

4
test/unit/utglTF2ImportExport.cpp
View File

@ -442,8 +442,8 @@ TEST_F(utglTF2ImportExport, export_bad_accessor_bounds) {
const aiScene* scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/BoxWithInfinites-glTF-Binary/BoxWithInfinites.glb", aiProcess_ValidateDataStructure);
ASSERT_NE(scene, nullptr);
EXPECT_EQ(aiReturn_FAILURE, exporter.Export(scene, "glb2", ASSIMP_TEST_MODELS_DIR "/glTF2/BoxWithInfinites-glTF-Binary/BoxWithInfinites_out.glb"));
EXPECT_EQ(aiReturn_FAILURE, exporter.Export(scene, "gltf2", ASSIMP_TEST_MODELS_DIR "/glTF2/BoxWithInfinites-glTF-Binary/BoxWithInfinites_out.gltf"));
EXPECT_EQ(aiReturn_SUCCESS, exporter.Export(scene, "glb2", ASSIMP_TEST_MODELS_DIR "/glTF2/BoxWithInfinites-glTF-Binary/BoxWithInfinites_out.glb"));
EXPECT_EQ(aiReturn_SUCCESS, exporter.Export(scene, "gltf2", ASSIMP_TEST_MODELS_DIR "/glTF2/BoxWithInfinites-glTF-Binary/BoxWithInfinites_out.gltf"));
}
#endif // ASSIMP_BUILD_NO_EXPORT