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add fallback strategy for metallicRoughnessTexture

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zhucan
2023-07-27 23:42:39 +08:00
parent 3a03fe31b1
commit 2b4606c082
1 changed files with 10 additions and 0 deletions
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10
code/AssetLib/glTF2/glTF2Exporter.cpp
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@@ -838,6 +838,16 @@ void glTF2Exporter::ExportMaterials() {
GetMatTex(mat, m->pbrMetallicRoughness.metallicRoughnessTexture, aiTextureType_DIFFUSE_ROUGHNESS);
if (!m->pbrMetallicRoughness.metallicRoughnessTexture.texture) {
//if there wasn't a aiTextureType_DIFFUSE_ROUGHNESS defined in the source, fallback to aiTextureType_METALNESS
GetMatTex(mat, m->pbrMetallicRoughness.metallicRoughnessTexture, aiTextureType_METALNESS);
}
if (!m->pbrMetallicRoughness.metallicRoughnessTexture.texture) {
//if there still wasn't a aiTextureType_METALNESS defined in the source, fallback to unknown texture
GetMatTex(mat, m->pbrMetallicRoughness.metallicRoughnessTexture, AI_MATKEY_GLTF_PBRMETALLICROUGHNESS_METALLICROUGHNESS_TEXTURE);
}
if (GetMatColor(mat, m->pbrMetallicRoughness.baseColorFactor, AI_MATKEY_BASE_COLOR) != AI_SUCCESS) {
// if baseColorFactor wasn't defined, then the source is likely not a metallic roughness material.
//a fallback to any diffuse color should be used instead