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glasm: Implement ImageFetch

This commit is contained in:
ReinUsesLisp 2021-05-19 02:05:24 -03:00 committed by ameerj
parent 3777592ada
commit 4a22942f45
4 changed files with 38 additions and 13 deletions
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13
src/shader_recompiler/backend/glasm/emit_context.cpp
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@ -80,11 +80,14 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings) : info{progra
Add("OUTPUT out_attr{}[]={{result.attrib[{}..{}]}};", index, index, index);
}
}
const size_t num_textures{program.info.texture_descriptors.size()};
texture_bindings.resize(num_textures);
for (size_t index = 0; index < num_textures; ++index) {
const auto& desc{program.info.texture_descriptors[index]};
texture_bindings[index] = bindings.texture;
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);
bindings.texture += desc.count;
}
texture_bindings.reserve(program.info.texture_descriptors.size());
for (const auto& desc : program.info.texture_descriptors) {
texture_bindings.push_back(bindings.texture);
bindings.texture += desc.count;
}
}

1
src/shader_recompiler/backend/glasm/emit_context.h
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@ -56,6 +56,7 @@ public:
RegAlloc reg_alloc{*this};
const Info& info;
std::vector<u32> texture_buffer_bindings;
std::vector<u32> texture_bindings;
std::string_view stage_name = "invalid";

33
src/shader_recompiler/backend/glasm/emit_glasm_image.cpp
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@ -43,7 +43,11 @@ struct ScopedRegister {
std::string Texture(EmitContext& ctx, IR::TextureInstInfo info,
[[maybe_unused]] const IR::Value& index) {
// FIXME: indexed reads
return fmt::format("texture[{}]", ctx.texture_bindings.at(info.descriptor_index));
if (info.type == TextureType::Buffer) {
return fmt::format("texture[{}]", ctx.texture_buffer_bindings.at(info.descriptor_index));
} else {
return fmt::format("texture[{}]", ctx.texture_bindings.at(info.descriptor_index));
}
}
std::string_view TextureType(IR::TextureInstInfo info) {
@ -421,11 +425,28 @@ void EmitImageGatherDref(EmitContext& ctx, IR::Inst& inst, const IR::Value& inde
StoreSparse(ctx, sparse_inst);
}
void EmitImageFetch([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index, [[maybe_unused]] Register coord,
[[maybe_unused]] Register offset, [[maybe_unused]] Register lod,
[[maybe_unused]] Register ms) {
throw NotImplementedException("GLASM instruction");
void EmitImageFetch(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
const IR::Value& coord, const IR::Value& offset, ScalarS32 lod, ScalarS32 ms) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto sparse_inst{inst.GetAssociatedPseudoOperation(IR::Opcode::GetSparseFromOp)};
const std::string_view sparse_mod{sparse_inst ? ".SPARSE" : ""};
const std::string_view type{TextureType(info)};
const std::string texture{Texture(ctx, info, index)};
const std::string offset_vec{Offset(ctx, offset)};
const auto [coord_vec, coord_alloc]{Coord(ctx, coord)};
const Register ret{ctx.reg_alloc.Define(inst)};
if (info.type == TextureType::Buffer) {
ctx.Add("TXF.F{} {},{},{},{}{};", sparse_mod, ret, coord_vec, texture, type, offset_vec);
} else if (ms.type != Type::Void) {
ctx.Add("MOV.S {}.w,{};"
"TXFMS.F{} {},{},{},{}{};",
coord_vec, ms, sparse_mod, ret, coord_vec, texture, type, offset_vec);
} else {
ctx.Add("MOV.S {}.w,{};"
"TXF.F{} {},{},{},{}{};",
coord_vec, lod, sparse_mod, ret, coord_vec, texture, type, offset_vec);
}
StoreSparse(ctx, sparse_inst);
}
void EmitImageQueryDimensions(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,

4
src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
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@ -541,8 +541,8 @@ void EmitImageGather(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
void EmitImageGatherDref(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
const IR::Value& coord, const IR::Value& offset, const IR::Value& offset2,
const IR::Value& dref);
void EmitImageFetch(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, Register coord,
Register offset, Register lod, Register ms);
void EmitImageFetch(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
const IR::Value& coord, const IR::Value& offset, ScalarS32 lod, ScalarS32 ms);
void EmitImageQueryDimensions(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
ScalarF32 lod);
void EmitImageQueryLod(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, Register coord);