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glsl: Rework var alloc to not assign unused results

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This commit is contained in:
ameerj 2021-05-30 19:13:22 -04:00
parent 1269a0cf8b
commit 9f3ffb996b
9 changed files with 91 additions and 49 deletions
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50
src/shader_recompiler/backend/glsl/emit_glsl_composite.cpp
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@ -9,8 +9,14 @@
#include "shader_recompiler/frontend/ir/value.h"
namespace Shader::Backend::GLSL {
namespace {
static constexpr std::string_view SWIZZLE{"xyzw"};
void CompositeInsert(EmitContext& ctx, std::string_view result, std::string_view composite,
std::string_view object, u32 index) {
ctx.Add("{}={};", result, composite);
ctx.Add("{}.{}={};", result, SWIZZLE[index], object);
}
} // namespace
void EmitCompositeConstructU32x2(EmitContext& ctx, IR::Inst& inst, std::string_view e1,
std::string_view e2) {
ctx.AddU32x2("{}=uvec2({},{});", inst, e1, e2);
@ -41,19 +47,22 @@ void EmitCompositeExtractU32x4(EmitContext& ctx, IR::Inst& inst, std::string_vie
ctx.AddU32("{}={}.{};", inst, composite, SWIZZLE[index]);
}
void EmitCompositeInsertU32x2(EmitContext& ctx, std::string_view composite, std::string_view object,
u32 index) {
ctx.Add("{}.{}={};", composite, SWIZZLE[index], object);
void EmitCompositeInsertU32x2(EmitContext& ctx, IR::Inst& inst, std::string_view composite,
std::string_view object, u32 index) {
const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32x2)};
CompositeInsert(ctx, ret, composite, object, index);
}
void EmitCompositeInsertU32x3(EmitContext& ctx, std::string_view composite, std::string_view object,
u32 index) {
ctx.Add("{}.{}={};", composite, SWIZZLE[index], object);
void EmitCompositeInsertU32x3(EmitContext& ctx, IR::Inst& inst, std::string_view composite,
std::string_view object, u32 index) {
const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32x3)};
CompositeInsert(ctx, ret, composite, object, index);
}
void EmitCompositeInsertU32x4(EmitContext& ctx, std::string_view composite, std::string_view object,
u32 index) {
ctx.Add("{}.{}={};", composite, SWIZZLE[index], object);
void EmitCompositeInsertU32x4(EmitContext& ctx, IR::Inst& inst, std::string_view composite,
std::string_view object, u32 index) {
const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32x4)};
CompositeInsert(ctx, ret, composite, object, index);
}
void EmitCompositeConstructF16x2([[maybe_unused]] EmitContext& ctx,
@ -146,19 +155,22 @@ void EmitCompositeExtractF32x4(EmitContext& ctx, IR::Inst& inst, std::string_vie
ctx.AddF32("{}={}.{};", inst, composite, SWIZZLE[index]);
}
void EmitCompositeInsertF32x2(EmitContext& ctx, std::string_view composite, std::string_view object,
u32 index) {
ctx.Add("{}.{}={};", composite, SWIZZLE[index], object);
void EmitCompositeInsertF32x2(EmitContext& ctx, IR::Inst& inst, std::string_view composite,
std::string_view object, u32 index) {
const auto ret{ctx.var_alloc.Define(inst, GlslVarType::F32x2)};
CompositeInsert(ctx, ret, composite, object, index);
}
void EmitCompositeInsertF32x3(EmitContext& ctx, std::string_view composite, std::string_view object,
u32 index) {
ctx.Add("{}.{}={};", composite, SWIZZLE[index], object);
void EmitCompositeInsertF32x3(EmitContext& ctx, IR::Inst& inst, std::string_view composite,
std::string_view object, u32 index) {
const auto ret{ctx.var_alloc.Define(inst, GlslVarType::F32x3)};
CompositeInsert(ctx, ret, composite, object, index);
}
void EmitCompositeInsertF32x4(EmitContext& ctx, std::string_view composite, std::string_view object,
u32 index) {
ctx.Add("{}.{}={};", composite, SWIZZLE[index], object);
void EmitCompositeInsertF32x4(EmitContext& ctx, IR::Inst& inst, std::string_view composite,
std::string_view object, u32 index) {
const auto ret{ctx.var_alloc.Define(inst, GlslVarType::F32x4)};
CompositeInsert(ctx, ret, composite, object, index);
}
void EmitCompositeConstructF64x2([[maybe_unused]] EmitContext& ctx) {