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glTF2: Make handling of embedded textures safer. 

Previous code does not check whether the embedded texture exists.
pull/3946/head
Hill Ma 2021-06-08 12:53:18 -07:00
parent c58fe0c98f
commit ef739c1703
1 changed files with 7 additions and 8 deletions
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15
code/AssetLib/glTF2/glTF2Exporter.cpp
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@ -118,14 +118,14 @@ glTF2Exporter::glTF2Exporter(const char* filename, IOSystem* pIOSystem, const ai
ExportScene();
ExportAnimations();
// export extras
if(mProperties->HasPropertyCallback("extras"))
{
std::function<void*(void*)> ExportExtras = mProperties->GetPropertyCallback("extras");
mAsset->extras = (rapidjson::Value*)ExportExtras(0);
}
AssetWriter writer(*mAsset);
if (isBinary) {
@ -515,11 +515,10 @@ void glTF2Exporter::GetMatTex(const aiMaterial* mat, Ref<Texture>& texture, aiTe
std::string imgId = mAsset->FindUniqueID("", "image");
texture->source = mAsset->images.Create(imgId);
if (path[0] == '*') { // embedded
aiTexture* curTex = mScene->mTextures[atoi(&path[1])];
const aiTexture* curTex = mScene->GetEmbeddedTexture(path.c_str());
if (curTex != nullptr) { // embedded
texture->source->name = curTex->mFilename.C_Str();
//basisu: embedded ktx2, bu
if (curTex->achFormatHint[0]) {
std::string mimeType = "image/";
@ -541,7 +540,7 @@ void glTF2Exporter::GetMatTex(const aiMaterial* mat, Ref<Texture>& texture, aiTe
mimeType += curTex->achFormatHint;
texture->source->mimeType = mimeType;
}
// The asset has its own buffer, see Image::SetData
//basisu: "image/ktx2", "image/basis" as is
texture->source->SetData(reinterpret_cast<uint8_t *>(curTex->pcData), curTex->mWidth, *mAsset);
@ -554,7 +553,7 @@ void glTF2Exporter::GetMatTex(const aiMaterial* mat, Ref<Texture>& texture, aiTe
useBasisUniversal = true;
}
}
//basisu
if(useBasisUniversal) {
mAsset->extensionsUsed.KHR_texture_basisu = true;