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shader_recompiler: Fix cube sampling coordinates. (#2266)

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squidbus 2025-01-29 18:14:36 -08:00 • committed by GitHub
parent 4bb578f9fb
commit 929e15260d
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GPG key ID: B5690EEEBB952194
2 changed files with 21 additions and 6 deletions
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25
src/shader_recompiler/ir/passes/resource_tracking_pass.cpp
View file

@ -583,6 +583,18 @@ void PatchTextureBufferArgs(IR::Block& block, IR::Inst& inst, Info& info) {
}
}
IR::Value FixCubeCoords(IR::IREmitter& ir, const AmdGpu::Image& image, const IR::Value& x,
const IR::Value& y, const IR::Value& face) {
if (!image.IsCube()) {
return ir.CompositeConstruct(x, y, face);
}
// AMD cube math results in coordinates in the range [1.0, 2.0]. We need
// to convert this to the range [0.0, 1.0] to get correct results.
const auto fixed_x = ir.FPSub(IR::F32{x}, ir.Imm32(1.f));
const auto fixed_y = ir.FPSub(IR::F32{y}, ir.Imm32(1.f));
return ir.CompositeConstruct(fixed_x, fixed_y, face);
}
void PatchImageSampleArgs(IR::Block& block, IR::Inst& inst, Info& info,
const ImageResource& image_res, const AmdGpu::Image& image) {
const auto handle = inst.Arg(0);
@ -643,8 +655,8 @@ void PatchImageSampleArgs(IR::Block& block, IR::Inst& inst, Info& info,
case AmdGpu::ImageType::Color1DArray:
return read(0);
case AmdGpu::ImageType::Color2D:
case AmdGpu::ImageType::Color2DArray:
case AmdGpu::ImageType::Color2DMsaa:
case AmdGpu::ImageType::Color2DArray:
return ir.CompositeConstruct(read(0), read(8));
case AmdGpu::ImageType::Color3D:
return ir.CompositeConstruct(read(0), read(8), read(16));
@ -665,8 +677,8 @@ void PatchImageSampleArgs(IR::Block& block, IR::Inst& inst, Info& info,
addr_reg = addr_reg + 2;
return {get_addr_reg(addr_reg - 2), get_addr_reg(addr_reg - 1)};
case AmdGpu::ImageType::Color2D:
case AmdGpu::ImageType::Color2DArray:
case AmdGpu::ImageType::Color2DMsaa:
case AmdGpu::ImageType::Color2DArray:
// (du/dx, dv/dx), (du/dy, dv/dy)
addr_reg = addr_reg + 4;
return {ir.CompositeConstruct(get_addr_reg(addr_reg - 4), get_addr_reg(addr_reg - 3)),
@ -711,12 +723,13 @@ void PatchImageSampleArgs(IR::Block& block, IR::Inst& inst, Info& info,
case AmdGpu::ImageType::Color2D: // x, y
addr_reg = addr_reg + 2;
return ir.CompositeConstruct(get_coord(addr_reg - 2, 0), get_coord(addr_reg - 1, 1));
case AmdGpu::ImageType::Color2DArray: // x, y, slice
[[fallthrough]];
case AmdGpu::ImageType::Color2DMsaa: // x, y, frag
[[fallthrough]];
case AmdGpu::ImageType::Color2DArray: // x, y, slice
addr_reg = addr_reg + 3;
return ir.CompositeConstruct(get_coord(addr_reg - 3, 0), get_coord(addr_reg - 2, 1),
get_addr_reg(addr_reg - 1));
// Note we can use FixCubeCoords with fallthrough cases since it checks for image type.
return FixCubeCoords(ir, image, get_coord(addr_reg - 3, 0), get_coord(addr_reg - 2, 1),
get_addr_reg(addr_reg - 1));
case AmdGpu::ImageType::Color3D: // x, y, z
addr_reg = addr_reg + 3;
return ir.CompositeConstruct(get_coord(addr_reg - 3, 0), get_coord(addr_reg - 2, 1),

2
src/shader_recompiler/specialization.h
View file

@ -47,6 +47,7 @@ struct ImageSpecialization {
AmdGpu::ImageType type = AmdGpu::ImageType::Color2D;
bool is_integer = false;
bool is_storage = false;
bool is_cube = false;
AmdGpu::CompMapping dst_select{};
AmdGpu::NumberConversion num_conversion{};
@ -127,6 +128,7 @@ struct StageSpecialization {
spec.type = sharp.GetViewType(desc.is_array);
spec.is_integer = AmdGpu::IsInteger(sharp.GetNumberFmt());
spec.is_storage = desc.is_written;
spec.is_cube = sharp.IsCube();
if (spec.is_storage) {
spec.dst_select = sharp.DstSelect();
}