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[d3d9] FF: Apply transform flags count to generated texture coords

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... and fix cases where projection doesn't get applied.
This commit is contained in:
Robin Kertels 2024-05-23 00:18:01 +02:00 committed by Joshie
parent c98152683f
commit 7df8017e46
1 changed files with 31 additions and 24 deletions
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55
src/d3d9/d3d9_fixed_function.cpp
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@ -1139,12 +1139,12 @@ namespace dxvk {
case (DXVK_TSS_TCI_CAMERASPACENORMAL >> TCIOffset):
transformed = outNrm;
count = 4;
count = std::min(flags, 4u);
break;
case (DXVK_TSS_TCI_CAMERASPACEPOSITION >> TCIOffset):
transformed = m_module.opCompositeInsert(m_vec4Type, m_module.constf32(1.0f), vtx, 1, &wIndex);
count = 4;
count = std::min(flags, 4u);
break;
case (DXVK_TSS_TCI_CAMERASPACEREFLECTIONVECTOR >> TCIOffset): {
@ -1159,7 +1159,7 @@ namespace dxvk {
transformIndices[3] = m_module.constf32(1.0f);
transformed = m_module.opCompositeConstruct(m_vec4Type, transformIndices.size(), transformIndices.data());
count = 4;
count = std::min(flags, 4u);
break;
}
@ -1183,36 +1183,43 @@ namespace dxvk {
transformIndices[3] = m_module.constf32(1.0f);
transformed = m_module.opCompositeConstruct(m_vec4Type, transformIndices.size(), transformIndices.data());
count = 4;
count = std::min(flags, 4u);
break;
}
}
if (applyTransform || (count != 4 && count != 0)) {
if (applyTransform && !m_vsKey.Data.Contents.HasPositionT) {
for (uint32_t j = count; j < 4; j++) {
// If we're outside the component count of the vertex decl for this texcoord then we pad with zeroes.
// Otherwise, pad with ones.
if (applyTransform && !m_vsKey.Data.Contents.HasPositionT) {
for (uint32_t j = count; j < 4; j++) {
// If we're outside the component count of the vertex decl for this texcoord then we pad with zeroes.
// Otherwise, pad with ones.
// Very weird quirk in order to get texcoord transforms to work like they do in native.
// In future, maybe we could sort this out properly by chopping matrices of different sizes, but thats
// a project for another day.
uint32_t texcoordCount = (m_vsKey.Data.Contents.TexcoordDeclMask >> (3 * inputIndex)) & 0x7;
uint32_t value = j > texcoordCount ? m_module.constf32(0) : m_module.constf32(1);
transformed = m_module.opCompositeInsert(m_vec4Type, value, transformed, 1, &j);
}
transformed = m_module.opVectorTimesMatrix(m_vec4Type, transformed, m_vs.constants.texcoord[i]);
// Very weird quirk in order to get texcoord transforms to work like they do in native.
// In future, maybe we could sort this out properly by chopping matrices of different sizes, but thats
// a project for another day.
uint32_t texcoordCount = (m_vsKey.Data.Contents.TexcoordDeclMask >> (3 * inputIndex)) & 0x7;
uint32_t value = j > texcoordCount ? m_module.constf32(0) : m_module.constf32(1);
transformed = m_module.opCompositeInsert(m_vec4Type, value, transformed, 1, &j);
}
// Pad the unused section of it with the value for projection.
uint32_t projIdx = std::max(2u, count - 1);
uint32_t projValue = m_module.opCompositeExtract(m_floatType, transformed, 1, &projIdx);
for (uint32_t j = count; j < 4; j++)
transformed = m_module.opCompositeInsert(m_vec4Type, projValue, transformed, 1, &j);
transformed = m_module.opVectorTimesMatrix(m_vec4Type, transformed, m_vs.constants.texcoord[i]);
}
// The projection idx is always based on the flags, even when the input mode is not DXVK_TSS_TCI_PASSTHRU.
uint32_t projValue;
if (count < 3) {
// Not enough components to do projection.
// Native drivers render normally or garbage with D3DFVF_TEXCOORDSIZE2 or D3DTTFF_COUNT <3
projValue = m_module.constf32(1.0f);
} else {
uint32_t projIdx = count - 1;
projValue = m_module.opCompositeExtract(m_floatType, transformed, 1, &projIdx);
}
// The w component is only used for projection or unused, so always insert the component that's supposed to be divided by there.
// The fragment shader will then decide whether to project or not.
uint32_t wIdx = 3;
transformed = m_module.opCompositeInsert(m_vec4Type, projValue, transformed, 1, &wIdx);
m_module.opStore(m_vs.out.TEXCOORD[i], transformed);
}