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glasm: Implement textureGather instructions

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This commit is contained in:
ReinUsesLisp 2021-05-18 19:43:52 -03:00 committed by ameerj
parent 0fa421f82f
commit 3d3ed53511
2 changed files with 97 additions and 15 deletions
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103
src/shader_recompiler/backend/glasm/emit_glasm_image.cpp
View file

@ -2,6 +2,8 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <utility>
#include "shader_recompiler/backend/glasm/emit_context.h"
#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
#include "shader_recompiler/frontend/ir/modifiers.h"
@ -95,6 +97,33 @@ std::string Offset(EmitContext& ctx, const IR::Value& offset) {
return fmt::format(",offset({})", Register{ctx.reg_alloc.Consume(offset)});
}
std::pair<ScopedRegister, ScopedRegister> AllocOffsetsRegs(EmitContext& ctx,
const IR::Value& offset2) {
if (offset2.IsEmpty()) {
return {};
} else {
return {ctx.reg_alloc, ctx.reg_alloc};
}
}
void SwizzleOffsets(EmitContext& ctx, Register off_x, Register off_y, const IR::Value& offset1,
const IR::Value& offset2) {
const Register offsets_a{ctx.reg_alloc.Consume(offset1)};
const Register offsets_b{ctx.reg_alloc.Consume(offset2)};
// Input swizzle: [XYXY] [XYXY]
// Output swizzle: [XXXX] [YYYY]
ctx.Add("MOV {}.x,{}.x;"
"MOV {}.y,{}.z;"
"MOV {}.z,{}.x;"
"MOV {}.w,{}.z;"
"MOV {}.x,{}.y;"
"MOV {}.y,{}.w;"
"MOV {}.z,{}.y;"
"MOV {}.w,{}.w;",
off_x, offsets_a, off_x, offsets_a, off_x, offsets_b, off_x, offsets_b, off_y,
offsets_a, off_y, offsets_a, off_y, offsets_b, off_y, offsets_b);
}
std::pair<std::string, ScopedRegister> Coord(EmitContext& ctx, const IR::Value& coord) {
if (coord.IsImmediate()) {
ScopedRegister scoped_reg(ctx.reg_alloc);
@ -326,19 +355,71 @@ void EmitImageSampleDrefExplicitLod(EmitContext& ctx, IR::Inst& inst, const IR::
StoreSparse(ctx, sparse_inst);
}
void EmitImageGather([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index, [[maybe_unused]] Register coord,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] const IR::Value& offset2) {
throw NotImplementedException("GLASM instruction");
void EmitImageGather(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
const IR::Value& coord, const IR::Value& offset, const IR::Value& offset2) {
// Allocate offsets early so they don't overwrite any consumed register
const auto [off_x, off_y]{AllocOffsetsRegs(ctx, offset2)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const char comp{"xyzw"[info.gather_component]};
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 Register coord_vec{ctx.reg_alloc.Consume(coord)};
const Register ret{ctx.reg_alloc.Define(inst)};
if (offset2.IsEmpty()) {
const std::string offset_vec{Offset(ctx, offset)};
ctx.Add("TXG.F{} {},{},{}.{},{}{};", sparse_mod, ret, coord_vec, texture, comp, type,
offset_vec);
} else {
SwizzleOffsets(ctx, off_x.reg, off_y.reg, offset, offset2);
ctx.Add("TXGO.F{} {},{},{},{},{}.{},{};", sparse_mod, ret, coord_vec, off_x.reg, off_y.reg,
texture, comp, type);
}
StoreSparse(ctx, sparse_inst);
}
void EmitImageGatherDref([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index, [[maybe_unused]] Register coord,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] const IR::Value& offset2,
[[maybe_unused]] Register dref) {
throw NotImplementedException("GLASM instruction");
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) {
// FIXME: This instruction is not working as expected
// Allocate offsets early so they don't overwrite any consumed register
const auto [off_x, off_y]{AllocOffsetsRegs(ctx, offset2)};
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{ShadowTextureType(info)};
const std::string texture{Texture(ctx, info, index)};
const Register coord_vec{ctx.reg_alloc.Consume(coord)};
const ScalarF32 dref_value{ctx.reg_alloc.Consume(dref)};
const Register ret{ctx.reg_alloc.Define(inst)};
std::string args;
switch (info.type) {
case TextureType::Color2D:
ctx.Add("MOV.F {}.z,{};", coord_vec, dref_value);
args = fmt::to_string(coord_vec);
break;
case TextureType::ColorArray2D:
case TextureType::ColorCube:
ctx.Add("MOV.F {}.w,{};", coord_vec, dref_value);
args = fmt::to_string(coord_vec);
break;
case TextureType::ColorArrayCube:
args = fmt::format("{},{}", coord_vec, dref_value);
break;
default:
throw NotImplementedException("Invalid type {}", info.type.Value());
}
if (offset2.IsEmpty()) {
const std::string offset_vec{Offset(ctx, offset)};
ctx.Add("TXG.F{} {},{},{},{}{};", sparse_mod, ret, args, texture, type, offset_vec);
} else {
SwizzleOffsets(ctx, off_x.reg, off_y.reg, offset, offset2);
ctx.Add("TXGO.F{} {},{},{},{},{},{};", sparse_mod, ret, args, off_x.reg, off_y.reg, texture,
type);
}
StoreSparse(ctx, sparse_inst);
}
void EmitImageFetch([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,

9
src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
View file

@ -535,10 +535,11 @@ void EmitImageSampleDrefImplicitLod(EmitContext& ctx, IR::Inst& inst, const IR::
void EmitImageSampleDrefExplicitLod(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
const IR::Value& coord, ScalarF32 dref, ScalarF32 lod,
const IR::Value& offset);
void EmitImageGather(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, Register coord,
const IR::Value& offset, const IR::Value& offset2);
void EmitImageGatherDref(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, Register coord,
const IR::Value& offset, const IR::Value& offset2, Register dref);
void EmitImageGather(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
const IR::Value& coord, const IR::Value& offset, const IR::Value& offset2);
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 EmitImageQueryDimensions(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,