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[dxbc] Store sample positions as vec2 array

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We can append the zeroes in shader code instead. May
improve generated code on drivers that use scratch
memory or temporary uniform buffers for large arrays.
This commit is contained in:
Philip Rebohle 2019-04-29 13:48:08 +02:00
parent 8f5338b1d1
commit 06c144f075
1 changed files with 45 additions and 36 deletions
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81
src/dxbc/dxbc_compiler.cpp
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@ -3133,16 +3133,25 @@ namespace dxvk {
// components to the destination register.
DxbcRegisterPointer samplePos;
samplePos.type.ctype = DxbcScalarType::Float32;
samplePos.type.ccount = 4;
samplePos.type.ccount = 2;
samplePos.id = m_module.opAccessChain(
m_module.defPointerType(
getVectorTypeId(samplePos.type),
spv::StorageClassPrivate),
m_samplePositions, 1, &lookupIndex);
// Expand to vec4 by appending zeroes
DxbcRegisterValue result = emitValueLoad(samplePos);
DxbcRegisterValue zero;
zero.type.ctype = DxbcScalarType::Float32;
zero.type.ccount = 2;
zero.id = m_module.constvec2f32(0.0f, 0.0f);
result = emitRegisterConcat(result, zero);
emitRegisterStore(ins.dst[0],
emitRegisterSwizzle(
emitValueLoad(samplePos),
emitRegisterSwizzle(result,
ins.src[0].swizzle,
ins.dst[0].mask));
}
@ -7086,47 +7095,47 @@ namespace dxvk {
uint32_t DxbcCompiler::emitSamplePosArray() {
const std::array<uint32_t, 32> samplePosVectors = {{
// Invalid sample count / unbound resource
m_module.constvec4f32(0.0f, 0.0f, 0.0f, 0.0f),
m_module.constvec2f32(0.0f, 0.0f),
// VK_SAMPLE_COUNT_1_BIT
m_module.constvec4f32(0.5f, 0.5f, 0.0f, 0.0f),
m_module.constvec2f32(0.5f, 0.5f),
// VK_SAMPLE_COUNT_2_BIT
m_module.constvec4f32(0.75f, 0.75f, 0.0f, 0.0f),
m_module.constvec4f32(0.25f, 0.25f, 0.0f, 0.0f),
m_module.constvec2f32(0.75f, 0.75f),
m_module.constvec2f32(0.25f, 0.25f),
// VK_SAMPLE_COUNT_4_BIT
m_module.constvec4f32(0.375f, 0.125f, 0.0f, 0.0f),
m_module.constvec4f32(0.875f, 0.375f, 0.0f, 0.0f),
m_module.constvec4f32(0.125f, 0.625f, 0.0f, 0.0f),
m_module.constvec4f32(0.625f, 0.875f, 0.0f, 0.0f),
m_module.constvec2f32(0.375f, 0.125f),
m_module.constvec2f32(0.875f, 0.375f),
m_module.constvec2f32(0.125f, 0.625f),
m_module.constvec2f32(0.625f, 0.875f),
// VK_SAMPLE_COUNT_8_BIT
m_module.constvec4f32(0.5625f, 0.3125f, 0.0f, 0.0f),
m_module.constvec4f32(0.4375f, 0.6875f, 0.0f, 0.0f),
m_module.constvec4f32(0.8125f, 0.5625f, 0.0f, 0.0f),
m_module.constvec4f32(0.3125f, 0.1875f, 0.0f, 0.0f),
m_module.constvec4f32(0.1875f, 0.8125f, 0.0f, 0.0f),
m_module.constvec4f32(0.0625f, 0.4375f, 0.0f, 0.0f),
m_module.constvec4f32(0.6875f, 0.9375f, 0.0f, 0.0f),
m_module.constvec4f32(0.9375f, 0.0625f, 0.0f, 0.0f),
m_module.constvec2f32(0.5625f, 0.3125f),
m_module.constvec2f32(0.4375f, 0.6875f),
m_module.constvec2f32(0.8125f, 0.5625f),
m_module.constvec2f32(0.3125f, 0.1875f),
m_module.constvec2f32(0.1875f, 0.8125f),
m_module.constvec2f32(0.0625f, 0.4375f),
m_module.constvec2f32(0.6875f, 0.9375f),
m_module.constvec2f32(0.9375f, 0.0625f),
// VK_SAMPLE_COUNT_16_BIT
m_module.constvec4f32(0.5625f, 0.5625f, 0.0f, 0.0f),
m_module.constvec4f32(0.4375f, 0.3125f, 0.0f, 0.0f),
m_module.constvec4f32(0.3125f, 0.6250f, 0.0f, 0.0f),
m_module.constvec4f32(0.7500f, 0.4375f, 0.0f, 0.0f),
m_module.constvec4f32(0.1875f, 0.3750f, 0.0f, 0.0f),
m_module.constvec4f32(0.6250f, 0.8125f, 0.0f, 0.0f),
m_module.constvec4f32(0.8125f, 0.6875f, 0.0f, 0.0f),
m_module.constvec4f32(0.6875f, 0.1875f, 0.0f, 0.0f),
m_module.constvec4f32(0.3750f, 0.8750f, 0.0f, 0.0f),
m_module.constvec4f32(0.5000f, 0.0625f, 0.0f, 0.0f),
m_module.constvec4f32(0.2500f, 0.1250f, 0.0f, 0.0f),
m_module.constvec4f32(0.1250f, 0.7500f, 0.0f, 0.0f),
m_module.constvec4f32(0.0000f, 0.5000f, 0.0f, 0.0f),
m_module.constvec4f32(0.9375f, 0.2500f, 0.0f, 0.0f),
m_module.constvec4f32(0.8750f, 0.9375f, 0.0f, 0.0f),
m_module.constvec4f32(0.0625f, 0.0000f, 0.0f, 0.0f),
m_module.constvec2f32(0.5625f, 0.5625f),
m_module.constvec2f32(0.4375f, 0.3125f),
m_module.constvec2f32(0.3125f, 0.6250f),
m_module.constvec2f32(0.7500f, 0.4375f),
m_module.constvec2f32(0.1875f, 0.3750f),
m_module.constvec2f32(0.6250f, 0.8125f),
m_module.constvec2f32(0.8125f, 0.6875f),
m_module.constvec2f32(0.6875f, 0.1875f),
m_module.constvec2f32(0.3750f, 0.8750f),
m_module.constvec2f32(0.5000f, 0.0625f),
m_module.constvec2f32(0.2500f, 0.1250f),
m_module.constvec2f32(0.1250f, 0.7500f),
m_module.constvec2f32(0.0000f, 0.5000f),
m_module.constvec2f32(0.9375f, 0.2500f),
m_module.constvec2f32(0.8750f, 0.9375f),
m_module.constvec2f32(0.0625f, 0.0000f),
}};
uint32_t arrayTypeId = getArrayTypeId({
DxbcScalarType::Float32, 4,
DxbcScalarType::Float32, 2,
static_cast<uint32_t>(samplePosVectors.size()) });
uint32_t samplePosArray = m_module.constComposite(