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RescalingPass: Agregate pixels on texelFetch while on Fragment Shader

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This commit is contained in:
Fernando Sahmkow 2021-08-07 02:59:05 +02:00
parent 6933f82023
commit 2549ee33ee
1 changed files with 97 additions and 3 deletions
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100
src/shader_recompiler/ir_opt/rescaling_pass.cpp
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@ -40,6 +40,22 @@ void PatchFragCoord(IR::Block& block, IR::Inst& inst) {
}
}
[[nodiscard]] IR::U32 SubScale(IR::IREmitter& ir, const IR::U1& is_scaled, const IR::U32& value,
const IR::Attribute attrib) {
if (Settings::values.resolution_info.active) {
const IR::F32 opt1{ir.Imm32(Settings::values.resolution_info.up_factor)};
const IR::F32 base{ir.FPMul(ir.ConvertUToF(32, 32, value), opt1)};
const IR::F32 frag_coord{ir.GetAttribute(attrib)};
const IR::F32 opt2{ir.Imm32(Settings::values.resolution_info.down_factor)};
const IR::F32 floor{ir.FPMul(opt1, ir.FPFloor(ir.FPMul(frag_coord, opt2)))};
const IR::U32 deviation{
ir.ConvertFToU(32, ir.FPAdd(base, ir.FPAdd(frag_coord, ir.FPNeg(floor))))};
return IR::U32{ir.Select(is_scaled, deviation, value)};
} else {
return value;
}
}
[[nodiscard]] IR::U32 DownScale(IR::IREmitter& ir, const IR::U1& is_scaled, IR::U32 value) {
IR::U32 scaled_value{value};
bool changed{};
@ -113,6 +129,74 @@ void ScaleIntegerCoord(IR::IREmitter& ir, IR::Inst& inst, const IR::U1& is_scale
}
}
void SubScaleImageFetch(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::U1 is_scaled{ir.IsTextureScaled(ir.Imm32(info.descriptor_index))};
const IR::Value coord{inst.Arg(1)};
switch (info.type) {
case TextureType::Color2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
inst.SetArg(1, ir.CompositeConstruct(x, y));
break;
}
case TextureType::ColorArray2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
const IR::U32 z{ir.CompositeExtract(coord, 2)};
inst.SetArg(1, ir.CompositeConstruct(x, y, z));
break;
}
case TextureType::Color1D:
case TextureType::ColorArray1D:
case TextureType::Color3D:
case TextureType::ColorCube:
case TextureType::ColorArrayCube:
case TextureType::Buffer:
// Nothing to patch here
break;
}
}
void SubScaleImageRead(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::U1 is_scaled{ir.IsImageScaled(ir.Imm32(info.descriptor_index))};
const IR::Value coord{inst.Arg(1)};
switch (info.type) {
case TextureType::Color2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
inst.SetArg(1, ir.CompositeConstruct(x, y));
break;
}
case TextureType::ColorArray2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
const IR::U32 z{ir.CompositeExtract(coord, 2)};
inst.SetArg(1, ir.CompositeConstruct(x, y, z));
break;
}
case TextureType::Color1D:
case TextureType::ColorArray1D:
case TextureType::Color3D:
case TextureType::ColorCube:
case TextureType::ColorArrayCube:
case TextureType::Buffer:
// Nothing to patch here
break;
}
}
void PatchImageFetch(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
@ -145,13 +229,23 @@ void Visit(const IR::Program& program, IR::Block& block, IR::Inst& inst) {
break;
}
case IR::Opcode::ImageQueryDimensions:
PatchImageQueryDimensions(block, inst);
if (program.stage == Stage::Compute) {
PatchImageQueryDimensions(block, inst);
}
break;
case IR::Opcode::ImageFetch:
PatchImageFetch(block, inst);
if (is_fragment_shader) {
SubScaleImageFetch(block, inst);
} else if (program.stage == Stage::Compute) {
PatchImageFetch(block, inst);
}
break;
case IR::Opcode::ImageRead:
PatchImageRead(block, inst);
if (is_fragment_shader) {
SubScaleImageRead(block, inst);
} else if (program.stage == Stage::Compute) {
PatchImageRead(block, inst);
}
break;
default:
break;