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[d3d9] FF: Prevent specular highlights on the back of geometry

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Fixes the Wine test "test_specular_lighting".
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Robin Kertels 2024-03-12 23:38:18 +01:00 committed by Joshie
parent df9bdfc6ea
commit da814668bc
1 changed files with 2 additions and 0 deletions
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src/d3d9/d3d9_fixed_function.cpp
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@ -1331,6 +1331,8 @@ namespace dxvk {
uint32_t midDot = m_module.opDot(m_floatType, normal, mid);
midDot = m_module.opFClamp(m_floatType, midDot, m_module.constf32(0.0f), m_module.constf32(1.0f));
uint32_t doSpec = m_module.opFOrdGreaterThan(bool_t, midDot, m_module.constf32(0.0f));
doSpec = m_module.opLogicalAnd(bool_t, doSpec, m_module.opFOrdGreaterThan(m_floatType, hitDot, m_module.constf32(0.0f)));
uint32_t specularness = m_module.opPow(m_floatType, midDot, m_vs.constants.materialPower);
specularness = m_module.opFMul(m_floatType, specularness, atten);
specularness = m_module.opSelect(m_floatType, doSpec, specularness, m_module.constf32(0.0f));