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FBX2glTF
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Apply the correct transform on normals (remove transform & scaling components)

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David Ávila Membrives 2017-12-03 15:32:53 +01:00
parent a9c4fb1bd0
commit 9c2e485cfc
1 changed files with 4 additions and 1 deletions
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5
src/Fbx2Raw.cpp
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@ -739,7 +739,10 @@ static void ReadMesh(RawModel &raw, FbxScene *pScene, FbxNode *pNode, const std:
const FbxVector4 meshScaling = pNode->GetGeometricScaling(FbxNode::eSourcePivot);
const FbxAMatrix meshTransform(meshTranslation, meshRotation, meshScaling);
const FbxMatrix transform = meshTransform;
const FbxMatrix inverseTransposeTransform = transform.Inverse().Transpose();
// Remove translation & scaling from transforms that will bi applied to normals, tangents & binormals
const FbxMatrix normalTransform(FbxVector4(), meshRotation, FbxVector4(1.0f, 1.0f, 1.0f, 1.0f));
const FbxMatrix inverseTransposeTransform = normalTransform.Inverse().Transpose();
raw.AddVertexAttribute(RAW_VERTEX_ATTRIBUTE_POSITION);
if (normalLayer.LayerPresent()) { raw.AddVertexAttribute(RAW_VERTEX_ATTRIBUTE_NORMAL); }