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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string_view>
#include "shader_recompiler/backend/glsl/emit_context.h"
#include "shader_recompiler/backend/glsl/emit_glsl_instructions.h"
#include "shader_recompiler/frontend/ir/modifiers.h"
#include "shader_recompiler/frontend/ir/value.h"
namespace Shader::Backend::GLSL {
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");
} else {
return fmt::format("tex{}", ctx.texture_bindings.at(info.descriptor_index));
}
}
std::string CastToIntVec(std::string_view value, const IR::TextureInstInfo& info) {
switch (info.type) {
case TextureType::Color1D:
return fmt::format("int({})", value);
case TextureType::ColorArray1D:
case TextureType::Color2D:
case TextureType::ColorArray2D:
return fmt::format("ivec2({})", value);
case TextureType::Color3D:
case TextureType::ColorCube:
return fmt::format("ivec3({})", value);
case TextureType::ColorArrayCube:
return fmt::format("ivec4({})", value);
default:
throw NotImplementedException("Offset type {}", info.type.Value());
}
}
std::string TexelFetchCastToInt(std::string_view value, const IR::TextureInstInfo& info) {
switch (info.type) {
case TextureType::Color1D:
return fmt::format("int({})", value);
case TextureType::ColorArray1D:
case TextureType::Color2D:
return fmt::format("ivec2({})", value);
case TextureType::ColorArray2D:
case TextureType::Color3D:
case TextureType::ColorCube:
return fmt::format("ivec3({})", value);
case TextureType::ColorArrayCube:
return fmt::format("ivec4({})", value);
default:
throw NotImplementedException("Offset type {}", info.type.Value());
}
}
std::string ShadowSamplerVecCast(TextureType type) {
switch (type) {
case TextureType::ColorArray2D:
case TextureType::ColorCube:
case TextureType::ColorArrayCube:
return "vec4";
default:
return "vec3";
}
}
IR::Inst* PrepareSparse(IR::Inst& inst) {
const auto sparse_inst{inst.GetAssociatedPseudoOperation(IR::Opcode::GetSparseFromOp)};
if (sparse_inst) {
sparse_inst->Invalidate();
}
return sparse_inst;
}
} // namespace
void EmitImageSampleImplicitLod([[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 bias_lc,
[[maybe_unused]] const IR::Value& offset) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
if (info.has_lod_clamp) {
throw NotImplementedException("Lod clamp samples");
}
const auto texture{Texture(ctx, info, index)};
const auto bias{info.has_bias ? fmt::format(",{}", bias_lc) : ""};
const auto texel{ctx.reg_alloc.Define(inst, Type::F32x4)};
const auto sparse_inst{PrepareSparse(inst)};
if (!sparse_inst) {
if (!offset.IsEmpty()) {
ctx.Add("{}=textureOffset({},{},{}{});", texel, texture, coords,
CastToIntVec(ctx.reg_alloc.Consume(offset), info), bias);
} else {
if (ctx.stage == Stage::Fragment) {
ctx.Add("{}=texture({},{}{});", texel, texture, coords, bias);
} else {
ctx.Add("{}=textureLod({},{},0.0);", texel, texture, coords);
}
}
return;
}
// TODO: Query sparseTexels extension support
if (!offset.IsEmpty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureOffsetARB({},{},{},{}{}));",
*sparse_inst, texture, coords, CastToIntVec(ctx.reg_alloc.Consume(offset), info),
texel, bias);
} else {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureARB({},{},{}{}));", *sparse_inst,
texture, coords, texel, bias);
}
}
void EmitImageSampleExplicitLod([[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 lod_lc,
[[maybe_unused]] const IR::Value& offset) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
if (info.has_bias) {
throw NotImplementedException("Bias texture samples");
}
if (info.has_lod_clamp) {
throw NotImplementedException("Lod clamp samples");
}
const auto texture{Texture(ctx, info, index)};
const auto texel{ctx.reg_alloc.Define(inst, Type::F32x4)};
const auto sparse_inst{PrepareSparse(inst)};
if (!sparse_inst) {
if (!offset.IsEmpty()) {
ctx.Add("{}=textureLodOffset({},{},{},{});", texel, texture, coords, lod_lc,
CastToIntVec(ctx.reg_alloc.Consume(offset), info));
} else {
ctx.Add("{}=textureLod({},{},{});", texel, texture, coords, lod_lc);
}
return;
}
// TODO: Query sparseTexels extension support
if (!offset.IsEmpty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTexelFetchOffsetARB({},{},int({}),{},{}));",
*sparse_inst, texture, CastToIntVec(coords, info), lod_lc,
CastToIntVec(ctx.reg_alloc.Consume(offset), info), texel);
} else {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureLodARB({},{},{},{}));", *sparse_inst,
texture, coords, lod_lc, texel);
}
}
void EmitImageSampleDrefImplicitLod([[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 dref,
[[maybe_unused]] std::string_view bias_lc,
[[maybe_unused]] const IR::Value& offset) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto sparse_inst{PrepareSparse(inst)};
if (sparse_inst) {
throw NotImplementedException("Sparse texture samples");
}
if (info.has_bias) {
throw NotImplementedException("Bias texture samples");
}
if (info.has_lod_clamp) {
throw NotImplementedException("Lod clamp samples");
}
if (!offset.IsEmpty()) {
throw NotImplementedException("textureLodOffset");
}
const auto texture{Texture(ctx, info, index)};
const auto bias{info.has_bias ? fmt::format(",{}", bias_lc) : ""};
const auto cast{ShadowSamplerVecCast(info.type)};
if (ctx.stage == Stage::Fragment) {
ctx.AddF32("{}=texture({},{}({},{}){});", inst, texture, cast, coords, dref, bias);
} else {
ctx.AddF32("{}=textureLod({},{}({},{}),0.0);", inst, texture, cast, coords, dref);
}
}
void EmitImageSampleDrefExplicitLod([[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 dref,
[[maybe_unused]] std::string_view lod_lc,
[[maybe_unused]] const IR::Value& offset) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto sparse_inst{PrepareSparse(inst)};
if (sparse_inst) {
throw NotImplementedException("Sparse texture samples");
}
if (info.has_bias) {
throw NotImplementedException("Bias texture samples");
}
if (info.has_lod_clamp) {
throw NotImplementedException("Lod clamp samples");
}
if (!offset.IsEmpty()) {
throw NotImplementedException("textureLodOffset");
}
const auto texture{Texture(ctx, info, index)};
if (info.type == TextureType::ColorArrayCube) {
ctx.AddF32("{}=textureLod({},{},{},{});", inst, texture, coords, dref, lod_lc);
} else {
ctx.AddF32("{}=textureLod({},vec3({},{}),{});", inst, texture, coords, dref, lod_lc);
}
}
void EmitImageGather([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index,
[[maybe_unused]] std::string_view coords,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] const IR::Value& offset2) {
throw NotImplementedException("GLSL Instruction");
}
void EmitImageGatherDref([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index,
[[maybe_unused]] std::string_view coords,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] const IR::Value& offset2,
[[maybe_unused]] std::string_view dref) {
throw NotImplementedException("GLSL Instruction");
}
void EmitImageFetch([[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 offset, [[maybe_unused]] std::string_view lod,
[[maybe_unused]] std::string_view ms) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
if (info.has_bias) {
throw NotImplementedException("Bias texture samples");
}
if (info.has_lod_clamp) {
throw NotImplementedException("Lod clamp samples");
}
const auto texture{Texture(ctx, info, index)};
const auto sparse_inst{PrepareSparse(inst)};
const auto texel{ctx.reg_alloc.Define(inst, Type::F32x4)};
if (!sparse_inst) {
if (!offset.empty()) {
ctx.Add("{}=texelFetchOffset({},{},int({}),{});", texel, texture,
TexelFetchCastToInt(coords, info), lod, TexelFetchCastToInt(offset, info));
} else {
ctx.Add("{}=texelFetch({},{},int({}));", texel, texture,
TexelFetchCastToInt(coords, info), lod);
}
return;
}
// TODO: Query sparseTexels extension support
if (!offset.empty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTexelFetchOffsetARB({},{},int({}),{},{}));",
*sparse_inst, texture, CastToIntVec(coords, info), lod,
CastToIntVec(offset, info), texel);
} else {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTexelFetchARB({},{},{},{}));", *sparse_inst,
texture, CastToIntVec(coords, info), lod, texel);
}
}
void EmitImageQueryDimensions([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index,
[[maybe_unused]] std::string_view lod) {
throw NotImplementedException("GLSL Instruction");
}
void EmitImageQueryLod([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index,
[[maybe_unused]] std::string_view coords) {
throw NotImplementedException("GLSL Instruction");
}
void EmitImageGradient([[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 derivates,
[[maybe_unused]] std::string_view offset,
[[maybe_unused]] std::string_view lod_clamp) {
throw NotImplementedException("GLSL Instruction");
}
void EmitImageRead([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] const IR::Value& index,
[[maybe_unused]] std::string_view coords) {
throw NotImplementedException("GLSL Instruction");
}
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) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageSampleImplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageSampleExplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageSampleDrefImplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageSampleDrefExplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageGather(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageGatherDref(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageFetch(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageQueryDimensions(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageQueryLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageGradient(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageRead(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBindlessImageWrite(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageSampleImplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageSampleExplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageSampleDrefImplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageSampleDrefExplicitLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageGather(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageGatherDref(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageFetch(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageQueryDimensions(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageQueryLod(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageGradient(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageRead(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
void EmitBoundImageWrite(EmitContext&) {
throw NotImplementedException("GLSL Instruction");
}
} // namespace Shader::Backend::GLSL
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