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[d3d9] Clip plane compaction

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Compact clip planes to the smallest amount that are enabled.

Signed-off-by: Autumn Ashton <misyl@froggi.es>
This commit is contained in:
Autumn Ashton 2024-12-04 16:41:48 +00:00 committed by Autumn
parent 8c4c814fb7
commit d956b188ed
4 changed files with 19 additions and 13 deletions
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14
src/d3d9/d3d9_device.cpp
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@ -5933,17 +5933,21 @@ namespace dxvk {
auto mapPtr = m_vsClipPlanes.AllocSlice();
auto dst = reinterpret_cast<D3D9ClipPlane*>(mapPtr);
uint32_t clipPlaneMask = 0u;
uint32_t clipPlaneCount = 0u;
for (uint32_t i = 0; i < caps::MaxClipPlanes; i++) {
dst[i] = (m_state.renderStates[D3DRS_CLIPPLANEENABLE] & (1 << i))
D3D9ClipPlane clipPlane = (m_state.renderStates[D3DRS_CLIPPLANEENABLE] & (1 << i))
? m_state.clipPlanes[i]
: D3D9ClipPlane();
if (dst[i] != D3D9ClipPlane())
clipPlaneMask |= 1u << i;
if (clipPlane != D3D9ClipPlane())
dst[clipPlaneCount++] = clipPlane;
}
if (m_specInfo.set<SpecClipPlaneMask>(clipPlaneMask))
// Write the rest to 0 for GPL.
for (uint32_t i = clipPlaneCount; i < caps::MaxClipPlanes; i++)
dst[i] = D3D9ClipPlane();
if (m_specInfo.set<SpecClipPlaneCount>(clipPlaneCount))
m_flags.set(D3D9DeviceFlag::DirtySpecializationEntries);
}

7
src/d3d9/d3d9_fixed_function.cpp
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@ -2407,6 +2407,9 @@ namespace dxvk {
m_module.decorateBuiltIn(clipDistArray, spv::BuiltInClipDistance);
// Always consider clip planes enabled when doing GPL by forcing 6 for the quick value.
uint32_t clipPlaneCount = m_spec.get(m_module, m_specUbo, SpecClipPlaneCount, 0, 32, m_module.constu32(caps::MaxClipPlanes));
// Compute clip distances
for (uint32_t i = 0; i < caps::MaxClipPlanes; i++) {
std::array<uint32_t, 2> blockMembers = {{
@ -2421,9 +2424,7 @@ namespace dxvk {
uint32_t distId = m_module.opDot(floatType, worldPos, planeId);
// Always consider clip planes enabled when doing GPL by forcing a mask of 0xffffffff for the quick value.
uint32_t clipPlaneEnabledBit = m_spec.get(m_module, m_specUbo, SpecClipPlaneMask, i, 1, m_module.constu32(0xffffffff));
uint32_t clipPlaneEnabled = m_module.opINotEqual(boolType, clipPlaneEnabledBit, m_module.constu32(0));
uint32_t clipPlaneEnabled = m_module.opULessThan(boolType, m_module.constu32(i), clipPlaneCount);
uint32_t value = m_module.opSelect(floatType, clipPlaneEnabled, distId, m_module.constf32(0.0f));

4
src/d3d9/d3d9_spec_constants.h
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@ -30,7 +30,7 @@ namespace dxvk {
SpecDrefClamp, // 1 bit for 16 PS samplers | Bits: 16
SpecFetch4, // 1 bit for 16 PS samplers | Bits: 16
SpecClipPlaneMask, // 6 bits for 6 clip planes | Bits : 6
SpecClipPlaneCount, // 3 bits for 6 clip planes | Bits : 3
SpecConstantCount,
};
@ -71,7 +71,7 @@ namespace dxvk {
{ 4, 0, 16 }, // DrefClamp
{ 4, 16, 16 }, // Fetch4
{ 5, 0, 6 }, // ClipPlaneEnabled
{ 5, 0, 3 }, // ClipPlaneCount
}};
template <D3D9SpecConstantId Id, typename T>

7
src/dxso/dxso_compiler.cpp
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@ -3537,6 +3537,9 @@ void DxsoCompiler::emitControlFlowGenericLoop(
DxsoRegisterValue position;
position.type = { DxsoScalarType::Float32, 4 };
position.id = m_module.opLoad(vec4Type, positionPtr);
// Always consider clip planes enabled when doing GPL by forcing 6 for the quick value.
uint32_t clipPlaneCount = m_spec.get(m_module, m_specUbo, SpecClipPlaneCount, 0, 32, m_module.constu32(caps::MaxClipPlanes));
for (uint32_t i = 0; i < caps::MaxClipPlanes; i++) {
std::array<uint32_t, 2> blockMembers = {{
@ -3552,9 +3555,7 @@ void DxsoCompiler::emitControlFlowGenericLoop(
DxsoRegisterValue dist = emitDot(position, plane);
// Always consider clip planes enabled when doing GPL by forcing a mask of 0xffffffff for the quick value.
uint32_t clipPlaneEnabledBit = m_spec.get(m_module, m_specUbo, SpecClipPlaneMask, i, 1, m_module.constu32(0xffffffff));
uint32_t clipPlaneEnabled = m_module.opINotEqual(boolType, clipPlaneEnabledBit, m_module.constu32(0));
uint32_t clipPlaneEnabled = m_module.opULessThan(boolType, m_module.constu32(i), clipPlaneCount);
uint32_t value = m_module.opSelect(floatType, clipPlaneEnabled, dist.id, m_module.constf32(0.0f));