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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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33
src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
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@ -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&) {