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glsl: Implement Images

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This commit is contained in:
ameerj 2021-06-02 20:37:24 -04:00
parent 6577a63d36
commit af9696059c
2 changed files with 74 additions and 9 deletions
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50
src/shader_recompiler/backend/glsl/emit_context.cpp
View file

@ -91,11 +91,42 @@ std::string_view SamplerType(TextureType type, bool is_depth) {
case TextureType::Buffer:
return "samplerBuffer";
default:
fmt::print("Texture type: {}", type);
throw NotImplementedException("Texture type: {}", type);
}
}
std::string_view ImageType(TextureType type) {
switch (type) {
case TextureType::Color2D:
return "uimage2D";
default:
throw NotImplementedException("Image type: {}", type);
}
}
std::string_view ImageFormatString(ImageFormat format) {
switch (format) {
case ImageFormat::Typeless:
return "";
case ImageFormat::R8_UINT:
return ",r8ui";
case ImageFormat::R8_SINT:
return ",r8i";
case ImageFormat::R16_UINT:
return ",r16ui";
case ImageFormat::R16_SINT:
return ",r16i";
case ImageFormat::R32_UINT:
return ",r32ui";
case ImageFormat::R32G32_UINT:
return ",rg32ui";
case ImageFormat::R32G32B32A32_UINT:
return ",rgba32ui";
default:
throw NotImplementedException("Image format: {}", format);
}
}
std::string_view GetTessMode(TessPrimitive primitive) {
switch (primitive) {
case TessPrimitive::Triangles:
@ -250,6 +281,7 @@ void EmitContext::SetupExtensions(std::string&) {
// TODO: track this usage
header += "#extension GL_ARB_sparse_texture2 : enable\n";
header += "#extension GL_EXT_texture_shadow_lod : enable\n";
header += "#extension GL_EXT_shader_image_load_formatted : enable\n";
if (info.uses_int64) {
header += "#extension GL_ARB_gpu_shader_int64 : enable\n";
}
@ -396,15 +428,25 @@ void EmitContext::DefineHelperFunctions() {
void EmitContext::SetupImages(Bindings& bindings) {
image_buffer_bindings.reserve(info.image_buffer_descriptors.size());
for (const auto& desc : info.image_buffer_descriptors) {
throw NotImplementedException("image_buffer_descriptors");
const auto indices{bindings.image + desc.count};
for (u32 index = bindings.image; index < indices; ++index) {
header += fmt::format("layout(binding={}) uniform uimageBuffer img{};", bindings.image,
index);
}
image_buffer_bindings.push_back(bindings.image);
bindings.image += desc.count;
}
image_bindings.reserve(info.image_descriptors.size());
for (const auto& desc : info.image_descriptors) {
throw NotImplementedException("image_bindings");
image_bindings.push_back(bindings.image);
const auto format{ImageFormatString(desc.format)};
const auto image_type{ImageType(desc.type)};
const auto qualifier{desc.is_written ? "" : "readonly "};
const auto indices{bindings.image + desc.count};
for (u32 index = bindings.image; index < indices; ++index) {
header += fmt::format("layout(binding={}{})uniform {}{} img{};", bindings.image, format,
qualifier, image_type, index);
}
bindings.image += desc.count;
}
texture_buffer_bindings.reserve(info.texture_buffer_descriptors.size());

33
src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
View file

@ -14,15 +14,25 @@ namespace {
std::string Texture(EmitContext& ctx, const IR::TextureInstInfo& info,
[[maybe_unused]] const IR::Value& index) {
if (info.type == TextureType::Buffer) {
throw NotImplementedException("TextureType::Buffer");
return fmt::format("tex{}", ctx.texture_buffer_bindings.at(info.descriptor_index));
} else {
return fmt::format("tex{}", ctx.texture_bindings.at(info.descriptor_index));
}
}
std::string Image(EmitContext& ctx, const IR::TextureInstInfo& info,
[[maybe_unused]] const IR::Value& index) {
if (info.type == TextureType::Buffer) {
return fmt::format("img{}", ctx.image_buffer_bindings.at(info.descriptor_index));
} else {
return fmt::format("img{}", ctx.image_bindings.at(info.descriptor_index));
}
}
std::string CastToIntVec(std::string_view value, const IR::TextureInstInfo& info) {
switch (info.type) {
case TextureType::Color1D:
case TextureType::Buffer:
return fmt::format("int({})", value);
case TextureType::ColorArray1D:
case TextureType::Color2D:
@ -41,6 +51,7 @@ std::string CastToIntVec(std::string_view value, const IR::TextureInstInfo& info
std::string TexelFetchCastToInt(std::string_view value, const IR::TextureInstInfo& info) {
switch (info.type) {
case TextureType::Color1D:
case TextureType::Buffer:
return fmt::format("int({})", value);
case TextureType::ColorArray1D:
case TextureType::Color2D:
@ -349,8 +360,12 @@ void EmitImageFetch([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst
ctx.Add("{}=texelFetchOffset({},{},int({}),{});", texel, texture,
TexelFetchCastToInt(coords, info), lod, TexelFetchCastToInt(offset, info));
} else {
ctx.Add("{}=texelFetch({},{},int({}));", texel, texture,
TexelFetchCastToInt(coords, info), lod);
if (info.type == TextureType::Buffer) {
ctx.Add("{}=texelFetch({},int({}));", texel, texture, coords);
} else {
ctx.Add("{}=texelFetch({},{},int({}));", texel, texture,
TexelFetchCastToInt(coords, info), lod);
}
}
return;
}
@ -434,14 +449,22 @@ void EmitImageGradient([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::I
void EmitImageRead([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index,
[[maybe_unused]] std::string_view coords) {
NotImplemented();
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto sparse_inst{PrepareSparse(inst)};
if (sparse_inst) {
throw NotImplementedException("EmitImageRead Sparse");
}
const auto image{Image(ctx, info, index)};
ctx.AddU32x4("{}=uvec4(imageLoad({},{}));", inst, image, TexelFetchCastToInt(coords, info));
}
void EmitImageWrite([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index,
[[maybe_unused]] std::string_view coords,
[[maybe_unused]] std::string_view color) {
NotImplemented();
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto image{Image(ctx, info, index)};
ctx.Add("imageStore({},{},{});", image, TexelFetchCastToInt(coords, info), color);
}
void EmitBindlessImageSampleImplicitLod(EmitContext&) {