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glasm: Implement ImageRead

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This commit is contained in:
ReinUsesLisp 2021-05-20 02:18:52 -03:00 committed by ameerj
parent 3d0ffc6ad0
commit dadd192b30
4 changed files with 56 additions and 4 deletions
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10
src/shader_recompiler/backend/glasm/emit_context.cpp
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@ -82,6 +82,16 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
Add("OUTPUT out_attr{}[]={{result.attrib[{}..{}]}};", index, index, index);
}
}
image_buffer_bindings.reserve(program.info.image_buffer_descriptors.size());
for (const auto& desc : program.info.image_buffer_descriptors) {
image_buffer_bindings.push_back(bindings.image);
bindings.image += desc.count;
}
image_bindings.reserve(program.info.image_descriptors.size());
for (const auto& desc : program.info.image_descriptors) {
image_bindings.push_back(bindings.image);
bindings.image += desc.count;
}
texture_buffer_bindings.reserve(program.info.texture_buffer_descriptors.size());
for (const auto& desc : program.info.texture_buffer_descriptors) {
texture_buffer_bindings.push_back(bindings.texture);

2
src/shader_recompiler/backend/glasm/emit_context.h
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@ -60,7 +60,9 @@ public:
const Profile& profile;
std::vector<u32> texture_buffer_bindings;
std::vector<u32> image_buffer_bindings;
std::vector<u32> texture_bindings;
std::vector<u32> image_bindings;
Stage stage{};
std::string_view stage_name = "invalid";

3
src/shader_recompiler/backend/glasm/emit_glasm.cpp
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@ -270,7 +270,8 @@ void SetupOptions(const IR::Program& program, const Profile& profile, std::strin
"OPTION NV_shader_storage_buffer;"
"OPTION NV_gpu_program_fp64;"
"OPTION NV_bindless_texture;"
"OPTION ARB_derivative_control;";
"OPTION ARB_derivative_control;"
"OPTION EXT_shader_image_load_formatted;";
if (info.uses_int64_bit_atomics) {
header += "OPTION NV_shader_atomic_int64;";
}

45
src/shader_recompiler/backend/glasm/emit_glasm_image.cpp
View File

@ -50,6 +50,16 @@ std::string Texture(EmitContext& ctx, IR::TextureInstInfo info,
}
}
std::string Image(EmitContext& ctx, IR::TextureInstInfo info,
[[maybe_unused]] const IR::Value& index) {
// FIXME: indexed reads
if (info.type == TextureType::Buffer) {
return fmt::format("image[{}]", ctx.image_buffer_bindings.at(info.descriptor_index));
} else {
return fmt::format("image[{}]", ctx.image_bindings.at(info.descriptor_index));
}
}
std::string_view TextureType(IR::TextureInstInfo info) {
if (info.is_depth) {
switch (info.type) {
@ -173,6 +183,28 @@ void StoreSparse(EmitContext& ctx, IR::Inst* sparse_inst) {
sparse_ret, sparse_ret);
sparse_inst->Invalidate();
}
std::string_view FormatStorage(ImageFormat format) {
switch (format) {
case ImageFormat::Typeless:
return "U";
case ImageFormat::R8_UINT:
return "U8";
case ImageFormat::R8_SINT:
return "S8";
case ImageFormat::R16_UINT:
return "U16";
case ImageFormat::R16_SINT:
return "S16";
case ImageFormat::R32_UINT:
return "U32";
case ImageFormat::R32G32_UINT:
return "U32X2";
case ImageFormat::R32G32B32A32_UINT:
return "U32X4";
}
throw InvalidArgument("Invalid image format {}", format);
}
} // Anonymous namespace
void EmitImageSampleImplicitLod(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
@ -528,9 +560,16 @@ void EmitImageGradient(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
StoreSparse(ctx, sparse_inst);
}
void EmitImageRead([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index, [[maybe_unused]] Register coord) {
throw NotImplementedException("GLASM instruction");
void EmitImageRead(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, Register coord) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto sparse_inst{inst.GetAssociatedPseudoOperation(IR::Opcode::GetSparseFromOp)};
const std::string_view format{FormatStorage(info.image_format)};
const std::string_view sparse_mod{sparse_inst ? ".SPARSE" : ""};
const std::string_view type{TextureType(info)};
const std::string image{Image(ctx, info, index)};
const Register ret{ctx.reg_alloc.Define(inst)};
ctx.Add("LOADIM.{}{} {},{},{},{};", format, sparse_mod, ret, coord, image, type);
StoreSparse(ctx, sparse_inst);
}
void EmitImageWrite([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,