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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/glasm/emit_context.h"
#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
#include "shader_recompiler/frontend/ir/value.h"
#include "shader_recompiler/profile.h"
namespace Shader::Backend::GLASM {
namespace {
void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset,
std::string_view size) {
if (!binding.IsImmediate()) {
throw NotImplementedException("Indirect constant buffer loading");
}
const Register ret{ctx.reg_alloc.Define(inst)};
ctx.Add("LDC.{} {},c{}[{}];", size, ret, binding.U32(), offset);
}
std::string VertexIndex(EmitContext& ctx, ScalarU32 vertex) {
switch (ctx.stage) {
case Stage::TessellationControl:
case Stage::TessellationEval:
case Stage::Geometry:
return fmt::format("[{}]", vertex);
default:
return "";
}
}
} // Anonymous namespace
void EmitGetCbufU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
GetCbuf(ctx, inst, binding, offset, "U8");
}
void EmitGetCbufS8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
GetCbuf(ctx, inst, binding, offset, "S8");
}
void EmitGetCbufU16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
GetCbuf(ctx, inst, binding, offset, "U16");
}
void EmitGetCbufS16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
GetCbuf(ctx, inst, binding, offset, "S16");
}
void EmitGetCbufU32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
GetCbuf(ctx, inst, binding, offset, "U32");
}
void EmitGetCbufF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
GetCbuf(ctx, inst, binding, offset, "F32");
}
void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
GetCbuf(ctx, inst, binding, offset, "U32X2");
}
void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, ScalarU32 vertex) {
const u32 element{static_cast<u32>(attr) % 4};
const char swizzle{"xyzw"[element]};
if (IR::IsGeneric(attr)) {
const u32 index{IR::GenericAttributeIndex(attr)};
ctx.Add("MOV.F {}.x,in_attr{}{}[0].{};", inst, index, VertexIndex(ctx, vertex), swizzle);
return;
}
switch (attr) {
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:
case IR::Attribute::PositionW:
if (ctx.stage == Stage::Geometry) {
ctx.Add("MOV.F {}.x,vertex_position{}.{};", inst, VertexIndex(ctx, vertex), swizzle);
} else {
ctx.Add("MOV.F {}.x,{}.position.{};", inst, ctx.attrib_name, swizzle);
}
break;
case IR::Attribute::TessellationEvaluationPointU:
case IR::Attribute::TessellationEvaluationPointV:
ctx.Add("MOV.F {}.x,vertex.tesscoord.{};", inst, swizzle);
break;
case IR::Attribute::PointSpriteS:
case IR::Attribute::PointSpriteT:
ctx.Add("MOV.F {}.x,{}.pointcoord.{};", inst, ctx.attrib_name, swizzle);
break;
case IR::Attribute::InstanceId:
ctx.Add("MOV.S {}.x,{}.instance;", inst, ctx.attrib_name);
break;
case IR::Attribute::VertexId:
ctx.Add("MOV.S {}.x,{}.id;", inst, ctx.attrib_name);
break;
case IR::Attribute::FrontFace:
ctx.Add("CMP.S {}.x,{}.facing.x,0,-1;", inst, ctx.attrib_name);
break;
default:
throw NotImplementedException("Get attribute {}", attr);
}
}
void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, ScalarF32 value,
[[maybe_unused]] ScalarU32 vertex) {
const u32 element{static_cast<u32>(attr) % 4};
const char swizzle{"xyzw"[element]};
if (IR::IsGeneric(attr)) {
const u32 index{IR::GenericAttributeIndex(attr)};
ctx.Add("MOV.F out_attr{}[0].{},{};", index, swizzle, value);
return;
}
switch (attr) {
case IR::Attribute::PointSize:
ctx.Add("MOV.F result.pointsize.x,{};", value);
break;
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:
case IR::Attribute::PositionW:
ctx.Add("MOV.F result.position.{},{};", swizzle, value);
break;
case IR::Attribute::ClipDistance0:
case IR::Attribute::ClipDistance1:
case IR::Attribute::ClipDistance2:
case IR::Attribute::ClipDistance3:
case IR::Attribute::ClipDistance4:
case IR::Attribute::ClipDistance5:
case IR::Attribute::ClipDistance6:
case IR::Attribute::ClipDistance7: {
const u32 index{static_cast<u32>(attr) - static_cast<u32>(IR::Attribute::ClipDistance0)};
ctx.Add("MOV.F result.clip[{}].x,{};", index, value);
break;
}
case IR::Attribute::ViewportIndex:
if (ctx.stage == Stage::Geometry || ctx.profile.support_viewport_index_layer_non_geometry) {
ctx.Add("MOV.F result.viewport.x,{};", value);
} else {
// LOG_WARNING
}
break;
default:
throw NotImplementedException("Set attribute {}", attr);
}
}
void EmitGetAttributeIndexed([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarU32 offset,
[[maybe_unused]] ScalarU32 vertex) {
throw NotImplementedException("GLASM instruction");
}
void EmitSetAttributeIndexed([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarU32 offset,
[[maybe_unused]] ScalarF32 value, [[maybe_unused]] ScalarU32 vertex) {
throw NotImplementedException("GLASM instruction");
}
void EmitGetPatch(EmitContext& ctx, IR::Inst& inst, IR::Patch patch) {
if (!IR::IsGeneric(patch)) {
throw NotImplementedException("Non-generic patch load");
}
const u32 index{IR::GenericPatchIndex(patch)};
const u32 element{IR::GenericPatchElement(patch)};
ctx.Add("MOV.F {},result.patch.attrib[{}].{}", inst, index, "xyzw"[element]);
}
void EmitSetPatch(EmitContext& ctx, IR::Patch patch, ScalarF32 value) {
if (IR::IsGeneric(patch)) {
const u32 index{IR::GenericPatchIndex(patch)};
const u32 element{IR::GenericPatchElement(patch)};
ctx.Add("MOV.F result.patch.attrib[{}].{},{}", index, "xyzw"[element], value);
return;
}
switch (patch) {
case IR::Patch::TessellationLodLeft:
case IR::Patch::TessellationLodRight:
case IR::Patch::TessellationLodTop:
case IR::Patch::TessellationLodBottom: {
const u32 index{static_cast<u32>(patch) - u32(IR::Patch::TessellationLodLeft)};
ctx.Add("MOV.F result.patch.tessouter[{}].x,{};", index, value);
break;
}
case IR::Patch::TessellationLodInteriorU:
ctx.Add("MOV.F result.patch.tessinner[0].x,{};", value);
break;
case IR::Patch::TessellationLodInteriorV:
ctx.Add("MOV.F result.patch.tessinner[1].x,{};", value);
break;
default:
throw NotImplementedException("Patch {}", patch);
}
}
void EmitSetFragColor(EmitContext& ctx, u32 index, u32 component, ScalarF32 value) {
ctx.Add("MOV.F frag_color{}.{},{};", index, "xyzw"[component], value);
}
void EmitSetSampleMask(EmitContext& ctx, ScalarS32 value) {
ctx.Add("MOV.S result.samplemask.x,{};", value);
}
void EmitSetFragDepth(EmitContext& ctx, ScalarF32 value) {
ctx.Add("MOV.F result.depth.z,{};", value);
}
void EmitLoadLocal(EmitContext& ctx, IR::Inst& inst, ScalarU32 word_offset) {
ctx.Add("MOV.U {},lmem[{}].x;", inst, word_offset);
}
void EmitWriteLocal(EmitContext& ctx, ScalarU32 word_offset, ScalarU32 value) {
ctx.Add("MOV.U lmem[{}].x,{};", word_offset, value);
}
} // namespace Shader::Backend::GLASM
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