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video_core: Fix SNORM texture buffer emulating error (#9001)

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Feng Chen 2022-11-04 14:39:42 +08:00 • committed by GitHub
parent ece22fcbc7
commit 75596c07e0
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GPG key ID: 4AEE18F83AFDEB23
23 changed files with 224 additions and 52 deletions
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49
src/shader_recompiler/ir_opt/texture_pass.cpp
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@ -7,6 +7,7 @@
#include <boost/container/small_vector.hpp>
#include "common/settings.h"
#include "shader_recompiler/environment.h"
#include "shader_recompiler/frontend/ir/basic_block.h"
#include "shader_recompiler/frontend/ir/breadth_first_search.h"
@ -363,6 +364,14 @@ TextureType ReadTextureType(Environment& env, const ConstBufferAddr& cbuf) {
return env.ReadTextureType(lhs_raw | rhs_raw);
}
TexturePixelFormat ReadTexturePixelFormat(Environment& env, const ConstBufferAddr& cbuf) {
const u32 secondary_index{cbuf.has_secondary ? cbuf.secondary_index : cbuf.index};
const u32 secondary_offset{cbuf.has_secondary ? cbuf.secondary_offset : cbuf.offset};
const u32 lhs_raw{env.ReadCbufValue(cbuf.index, cbuf.offset)};
const u32 rhs_raw{env.ReadCbufValue(secondary_index, secondary_offset)};
return env.ReadTexturePixelFormat(lhs_raw | rhs_raw);
}
class Descriptors {
public:
explicit Descriptors(TextureBufferDescriptors& texture_buffer_descriptors_,
@ -451,6 +460,38 @@ void PatchImageSampleImplicitLod(IR::Block& block, IR::Inst& inst) {
ir.FPMul(IR::F32(ir.CompositeExtract(coord, 1)),
ir.FPRecip(ir.ConvertUToF(32, 32, ir.CompositeExtract(texture_size, 1))))));
}
void PathTexelFetch(IR::Block& block, IR::Inst& inst, TexturePixelFormat pixel_format) {
const auto it{IR::Block::InstructionList::s_iterator_to(inst)};
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
auto get_max_value = [pixel_format]() -> float {
switch (pixel_format) {
case TexturePixelFormat::A8B8G8R8_SNORM:
case TexturePixelFormat::R8G8_SNORM:
case TexturePixelFormat::R8_SNORM:
return 1.f / std::numeric_limits<char>::max();
case TexturePixelFormat::R16G16B16A16_SNORM:
case TexturePixelFormat::R16G16_SNORM:
case TexturePixelFormat::R16_SNORM:
return 1.f / std::numeric_limits<short>::max();
default:
throw InvalidArgument("Invalid texture pixel format");
}
};
const IR::Value new_inst{&*block.PrependNewInst(it, inst)};
const IR::F32 x(ir.CompositeExtract(new_inst, 0));
const IR::F32 y(ir.CompositeExtract(new_inst, 1));
const IR::F32 z(ir.CompositeExtract(new_inst, 2));
const IR::F32 w(ir.CompositeExtract(new_inst, 3));
const IR::F16F32F64 max_value(ir.Imm32(get_max_value()));
const IR::Value converted =
ir.CompositeConstruct(ir.FPMul(ir.ConvertSToF(32, 32, ir.BitCast<IR::S32>(x)), max_value),
ir.FPMul(ir.ConvertSToF(32, 32, ir.BitCast<IR::S32>(y)), max_value),
ir.FPMul(ir.ConvertSToF(32, 32, ir.BitCast<IR::S32>(z)), max_value),
ir.FPMul(ir.ConvertSToF(32, 32, ir.BitCast<IR::S32>(w)), max_value));
inst.ReplaceUsesWith(converted);
}
} // Anonymous namespace
void TexturePass(Environment& env, IR::Program& program) {
@ -597,6 +638,14 @@ void TexturePass(Environment& env, IR::Program& program) {
} else {
inst->SetArg(0, IR::Value{});
}
if (Settings::values.renderer_backend.GetValue() == Settings::RendererBackend::OpenGL &&
inst->GetOpcode() == IR::Opcode::ImageFetch && flags.type == TextureType::Buffer) {
const auto pixel_format = ReadTexturePixelFormat(env, cbuf);
if (pixel_format != TexturePixelFormat::OTHER) {
PathTexelFetch(*texture_inst.block, *texture_inst.inst, pixel_format);
}
}
}
}