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Fix apha value 

- The alpha value in materials using the Tr format must be inverted
- closes https://github.com/assimp/assimp/issues/3645
pull/3652/head
Kim Kulling 2021-02-15 11:51:20 +01:00 committed by GitHub
parent 607d474400
commit 047b45d172
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 3 deletions
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8
code/AssetLib/Obj/ObjFileMtlImporter.cpp
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@ -122,8 +122,8 @@ void ObjFileMtlImporter::load() {
{ {
++m_DataIt; ++m_DataIt;
getColorRGBA(&m_pModel->m_pCurrentMaterial->ambient); getColorRGBA(&m_pModel->m_pCurrentMaterial->ambient);
} else if (*m_DataIt == 'd') // Diffuse color } else if (*m_DataIt == 'd') {
{ // Diffuse color
++m_DataIt; ++m_DataIt;
getColorRGBA(&m_pModel->m_pCurrentMaterial->diffuse); getColorRGBA(&m_pModel->m_pCurrentMaterial->diffuse);
} else if (*m_DataIt == 's') { } else if (*m_DataIt == 's') {
@ -144,7 +144,9 @@ void ObjFileMtlImporter::load() {
} else if (*m_DataIt == 'r') { } else if (*m_DataIt == 'r') {
// Material transmission alpha value // Material transmission alpha value
++m_DataIt; ++m_DataIt;
getFloatValue(m_pModel->m_pCurrentMaterial->alpha); ai_real d;
getFloatValue(d);
m_pModel->m_pCurrentMaterial->alpha = static_cast<ai_real>(1.0) - d;
} }
m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine);
} break; } break;