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suyu/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp

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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project, 2024 sudachi Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <string_view>
#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
#include "shader_recompiler/backend/glasm/glasm_emit_context.h"
#include "shader_recompiler/frontend/ir/value.h"
#include "shader_recompiler/profile.h"
#include "shader_recompiler/runtime_info.h"
#include "shader_recompiler/shader_info.h"
namespace Shader::Backend::GLASM {
namespace {
void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset,
std::string_view size) {
const Register ret{ctx.reg_alloc.Define(inst)};
if (offset.type == Type::U32) {
// Avoid reading arrays out of bounds, matching hardware's behavior
if (offset.imm_u32 >= 0x10'000) {
ctx.Add("MOV.S {},0;", ret);
return;
}
}
if (binding.IsImmediate()) {
ctx.Add("LDC.{} {},c{}[{}];", size, ret, binding.U32(), offset);
return;
}
const ScalarU32 idx{ctx.reg_alloc.Consume(binding)};
for (u32 i = 0; i < Info::MAX_INDIRECT_CBUFS; i++) {
ctx.Add("SEQ.S.CC RC.x,{},{};"
"IF NE.x;"
"LDC.{} {},c{}[{}];",
idx, i, size, ret, i, offset);
if (i != Info::MAX_INDIRECT_CBUFS - 1) {
ctx.Add("ELSE;");
}
}
for (u32 i = 0; i < Info::MAX_INDIRECT_CBUFS; i++) {
ctx.Add("ENDIF;");
}
}
bool IsInputArray(Stage stage) {
return stage == Stage::Geometry || stage == Stage::TessellationControl ||
stage == Stage::TessellationEval;
}
std::string VertexIndex(EmitContext& ctx, ScalarU32 vertex) {
return IsInputArray(ctx.stage) ? fmt::format("[{}]", vertex) : "";
}
u32 TexCoordIndex(IR::Attribute attr) {
return (static_cast<u32>(attr) - static_cast<u32>(IR::Attribute::FixedFncTexture0S)) / 4;
}
} // 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;
}
if (attr >= IR::Attribute::FixedFncTexture0S && attr <= IR::Attribute::FixedFncTexture9Q) {
const u32 index{TexCoordIndex(attr)};
ctx.Add("MOV.F {}.x,{}.texcoord[{}].{};", inst, ctx.attrib_name, index, swizzle);
return;
}
switch (attr) {
case IR::Attribute::PrimitiveId:
ctx.Add("MOV.F {}.x,primitive.id;", inst);
break;
case IR::Attribute::Layer:
ctx.Add("MOV.F {}.x,fragment.layer;", inst);
break;
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:
case IR::Attribute::PositionW:
if (IsInputArray(ctx.stage)) {
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::ColorFrontDiffuseR:
case IR::Attribute::ColorFrontDiffuseG:
case IR::Attribute::ColorFrontDiffuseB:
case IR::Attribute::ColorFrontDiffuseA:
ctx.Add("MOV.F {}.x,{}.color.{};", inst, ctx.attrib_name, 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::TessellationEvaluationPointU:
case IR::Attribute::TessellationEvaluationPointV:
ctx.Add("MOV.F {}.x,vertex.tesscoord.{};", inst, swizzle);
break;
case IR::Attribute::InstanceId:
ctx.Add("MOV.F {}.x,{}.instance;", inst, ctx.attrib_name);
break;
case IR::Attribute::VertexId:
ctx.Add("MOV.F {}.x,{}.id;", inst, ctx.attrib_name);
break;
case IR::Attribute::BaseInstance:
ctx.Add("MOV.F {}.x,{}.baseInstance;", inst, ctx.attrib_name);
break;
case IR::Attribute::BaseVertex:
ctx.Add("MOV.F {}.x,{}.baseVertex;", inst, ctx.attrib_name);
break;
case IR::Attribute::DrawID:
ctx.Add("MOV.F {}.x,{}.draw.id;", inst, ctx.attrib_name);
break;
case IR::Attribute::FrontFace:
ctx.Add("CMP.F {}.x,{}.facing.x,0,-1;", inst, ctx.attrib_name);
break;
default:
throw NotImplementedException("Get attribute {}", attr);
}
}
void EmitGetAttributeU32(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, ScalarU32) {
switch (attr) {
case IR::Attribute::PrimitiveId:
ctx.Add("MOV.S {}.x,primitive.id;", inst);
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::BaseInstance:
ctx.Add("MOV.S {}.x,{}.baseInstance;", inst, ctx.attrib_name);
break;
case IR::Attribute::BaseVertex:
ctx.Add("MOV.S {}.x,{}.baseVertex;", inst, ctx.attrib_name);
break;
case IR::Attribute::DrawID:
ctx.Add("MOV.S {}.x,{}.draw.id;", inst, ctx.attrib_name);
break;
default:
throw NotImplementedException("Get U32 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;
}
if (attr >= IR::Attribute::FixedFncTexture0S && attr <= IR::Attribute::FixedFncTexture9R) {
const u32 index{TexCoordIndex(attr)};
ctx.Add("MOV.F result.texcoord[{}].{},{};", index, swizzle, value);
return;
}
switch (attr) {
case IR::Attribute::Layer:
if (ctx.stage == Stage::Geometry || ctx.profile.support_viewport_index_layer_non_geometry) {
ctx.Add("MOV.F result.layer.x,{};", value);
} else {
LOG_WARNING(Shader_GLASM,
"Layer stored outside of geometry shader not supported by device");
}
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(Shader_GLASM,
"Viewport stored outside of geometry shader not supported by device");
}
break;
case IR::Attribute::ViewportMask:
// NV_viewport_array2 is required to access result.viewportmask, regardless of shader stage.
if (ctx.profile.support_viewport_index_layer_non_geometry) {
ctx.Add("MOV.F result.viewportmask[0].x,{};", value);
} else {
LOG_WARNING(Shader_GLASM, "Device does not support storing to ViewportMask");
}
break;
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::ColorFrontDiffuseR:
case IR::Attribute::ColorFrontDiffuseG:
case IR::Attribute::ColorFrontDiffuseB:
case IR::Attribute::ColorFrontDiffuseA:
ctx.Add("MOV.F result.color.{},{};", swizzle, value);
break;
case IR::Attribute::ColorFrontSpecularR:
case IR::Attribute::ColorFrontSpecularG:
case IR::Attribute::ColorFrontSpecularB:
case IR::Attribute::ColorFrontSpecularA:
ctx.Add("MOV.F result.color.secondary.{},{};", swizzle, value);
break;
case IR::Attribute::ColorBackDiffuseR:
case IR::Attribute::ColorBackDiffuseG:
case IR::Attribute::ColorBackDiffuseB:
case IR::Attribute::ColorBackDiffuseA:
ctx.Add("MOV.F result.color.back.{},{};", swizzle, value);
break;
case IR::Attribute::ColorBackSpecularR:
case IR::Attribute::ColorBackSpecularG:
case IR::Attribute::ColorBackSpecularB:
case IR::Attribute::ColorBackSpecularA:
ctx.Add("MOV.F result.color.back.secondary.{},{};", swizzle, value);
break;
case IR::Attribute::FogCoordinate:
ctx.Add("MOV.F result.fogcoord.x,{};", 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;
}
default:
throw NotImplementedException("Set attribute {}", attr);
}
}
void EmitGetAttributeIndexed(EmitContext& ctx, IR::Inst& inst, ScalarS32 offset, ScalarU32 vertex) {
// RC.x = base_index
// RC.y = masked_index
// RC.z = compare_index
ctx.Add("SHR.S RC.x,{},2;"
"AND.S RC.y,RC.x,3;"
"SHR.S RC.z,{},4;",
offset, offset);
const Register ret{ctx.reg_alloc.Define(inst)};
u32 num_endifs{};
const auto read{[&](u32 compare_index, const std::array<std::string, 4>& values) {
++num_endifs;
ctx.Add("SEQ.S.CC RC.w,RC.z,{};" // compare_index
"IF NE.w;"
// X
"SEQ.S.CC RC.w,RC.y,0;"
"IF NE.w;"
"MOV {}.x,{};"
"ELSE;"
// Y
"SEQ.S.CC RC.w,RC.y,1;"
"IF NE.w;"
"MOV {}.x,{};"
"ELSE;"
// Z
"SEQ.S.CC RC.w,RC.y,2;"
"IF NE.w;"
"MOV {}.x,{};"
"ELSE;"
// W
"MOV {}.x,{};"
"ENDIF;"
"ENDIF;"
"ENDIF;"
"ELSE;",
compare_index, ret, values[0], ret, values[1], ret, values[2], ret, values[3]);
}};
const auto read_swizzled{[&](u32 compare_index, std::string_view value) {
const std::array values{fmt::format("{}.x", value), fmt::format("{}.y", value),
fmt::format("{}.z", value), fmt::format("{}.w", value)};
read(compare_index, values);
}};
if (ctx.info.loads.AnyComponent(IR::Attribute::PositionX)) {
const u32 index{static_cast<u32>(IR::Attribute::PositionX)};
if (IsInputArray(ctx.stage)) {
read_swizzled(index, fmt::format("vertex_position{}", VertexIndex(ctx, vertex)));
} else {
read_swizzled(index, fmt::format("{}.position", ctx.attrib_name));
}
}
for (u32 index = 0; index < static_cast<u32>(IR::NUM_GENERICS); ++index) {
if (!ctx.info.loads.Generic(index)) {
continue;
}
read_swizzled(index, fmt::format("in_attr{}{}[0]", index, VertexIndex(ctx, vertex)));
}
for (u32 i = 0; i < num_endifs; ++i) {
ctx.Add("ENDIF;");
}
}
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)};
const char swizzle{"xyzw"[element]};
const std::string_view out{ctx.stage == Stage::TessellationControl ? ".out" : ""};
ctx.Add("MOV.F {},primitive{}.patch.attrib[{}].{};", inst, out, index, swizzle);
}
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 EmitWorkgroupId(EmitContext& ctx, IR::Inst& inst) {
ctx.Add("MOV.S {},invocation.groupid;", inst);
}
void EmitLocalInvocationId(EmitContext& ctx, IR::Inst& inst) {
ctx.Add("MOV.S {},invocation.localid;", inst);
}
void EmitInvocationId(EmitContext& ctx, IR::Inst& inst) {
ctx.Add("MOV.S {}.x,primitive_invocation.x;", inst);
}
void EmitInvocationInfo(EmitContext& ctx, IR::Inst& inst) {
switch (ctx.stage) {
case Stage::TessellationControl:
case Stage::TessellationEval:
ctx.Add("SHL.U {}.x,primitive.vertexcount,16;", inst);
break;
case Stage::Geometry:
ctx.Add("SHL.U {}.x,{},16;", inst,
InputTopologyVertices::vertices(ctx.runtime_info.input_topology));
break;
default:
LOG_WARNING(Shader, "(STUBBED) called");
ctx.Add("MOV.S {}.x,0x00ff0000;", inst);
}
}
void EmitSampleId(EmitContext& ctx, IR::Inst& inst) {
ctx.Add("MOV.S {}.x,fragment.sampleid.x;", inst);
}
void EmitIsHelperInvocation(EmitContext& ctx, IR::Inst& inst) {
ctx.Add("MOV.S {}.x,fragment.helperthread.x;", inst);
}
void EmitYDirection(EmitContext& ctx, IR::Inst& inst) {
ctx.uses_y_direction = true;
ctx.Add("MOV.F {}.x,y_direction[0].w;", inst);
}
void EmitResolutionDownFactor(EmitContext& ctx, IR::Inst& inst) {
ctx.Add("MOV.F {}.x,scaling[0].z;", inst);
}
void EmitRenderArea(EmitContext& ctx, IR::Inst& inst) {
ctx.Add("MOV.F {},render_area[0];", inst);
}
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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