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shader_recompiler: use float image operations on load/store when required

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This commit is contained in:
Liam 2023-12-19 10:55:56 -05:00
parent ee0b2d2c33
commit a952270b5c
10 changed files with 184 additions and 39 deletions
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25
src/shader_recompiler/ir_opt/texture_pass.cpp
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@ -372,6 +372,10 @@ TexturePixelFormat ReadTexturePixelFormat(Environment& env, const ConstBufferAdd
return env.ReadTexturePixelFormat(GetTextureHandle(env, cbuf));
}
bool IsTexturePixelFormatInteger(Environment& env, const ConstBufferAddr& cbuf) {
return env.IsTexturePixelFormatInteger(GetTextureHandle(env, cbuf));
}
class Descriptors {
public:
explicit Descriptors(TextureBufferDescriptors& texture_buffer_descriptors_,
@ -403,6 +407,7 @@ public:
})};
image_buffer_descriptors[index].is_written |= desc.is_written;
image_buffer_descriptors[index].is_read |= desc.is_read;
image_buffer_descriptors[index].is_integer |= desc.is_integer;
return index;
}
@ -432,6 +437,7 @@ public:
})};
image_descriptors[index].is_written |= desc.is_written;
image_descriptors[index].is_read |= desc.is_read;
image_descriptors[index].is_integer |= desc.is_integer;
return index;
}
@ -469,6 +475,20 @@ void PatchImageSampleImplicitLod(IR::Block& block, IR::Inst& inst) {
ir.FPRecip(ir.ConvertUToF(32, 32, ir.CompositeExtract(texture_size, 1))))));
}
bool IsPixelFormatSNorm(TexturePixelFormat pixel_format) {
switch (pixel_format) {
case TexturePixelFormat::A8B8G8R8_SNORM:
case TexturePixelFormat::R8G8_SNORM:
case TexturePixelFormat::R8_SNORM:
case TexturePixelFormat::R16G16B16A16_SNORM:
case TexturePixelFormat::R16G16_SNORM:
case TexturePixelFormat::R16_SNORM:
return true;
default:
return false;
}
}
void PatchTexelFetch(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)};
@ -587,11 +607,13 @@ void TexturePass(Environment& env, IR::Program& program, const HostTranslateInfo
}
const bool is_written{inst->GetOpcode() != IR::Opcode::ImageRead};
const bool is_read{inst->GetOpcode() != IR::Opcode::ImageWrite};
const bool is_integer{IsTexturePixelFormatInteger(env, cbuf)};
if (flags.type == TextureType::Buffer) {
index = descriptors.Add(ImageBufferDescriptor{
.format = flags.image_format,
.is_written = is_written,
.is_read = is_read,
.is_integer = is_integer,
.cbuf_index = cbuf.index,
.cbuf_offset = cbuf.offset,
.count = cbuf.count,
@ -603,6 +625,7 @@ void TexturePass(Environment& env, IR::Program& program, const HostTranslateInfo
.format = flags.image_format,
.is_written = is_written,
.is_read = is_read,
.is_integer = is_integer,
.cbuf_index = cbuf.index,
.cbuf_offset = cbuf.offset,
.count = cbuf.count,
@ -658,7 +681,7 @@ void TexturePass(Environment& env, IR::Program& program, const HostTranslateInfo
if (!host_info.support_snorm_render_buffer && inst->GetOpcode() == IR::Opcode::ImageFetch &&
flags.type == TextureType::Buffer) {
const auto pixel_format = ReadTexturePixelFormat(env, cbuf);
if (pixel_format != TexturePixelFormat::OTHER) {
if (IsPixelFormatSNorm(pixel_format)) {
PatchTexelFetch(*texture_inst.block, *texture_inst.inst, pixel_format);
}
}