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glsl: Implement precise fp variable allocation

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This commit is contained in:
ameerj
2021-05-30 22:44:28 -04:00
parent 14bfb4719a
commit e10366974e
4 changed files with 67 additions and 8 deletions
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41
src/shader_recompiler/backend/glsl/emit_glsl_floating_point.cpp
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@ -6,6 +6,7 @@
#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 {
@ -20,6 +21,10 @@ void Compare(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string
}
ctx.code += ";";
}
bool Precise(IR::Inst& inst) {
return {inst.Flags<IR::FpControl>().no_contraction};
}
} // namespace
void EmitFPAbs16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
@ -41,11 +46,19 @@ void EmitFPAdd16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& i
}
void EmitFPAdd32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddF32("{}=float({})+float({});", inst, a, b);
if (Precise(inst)) {
ctx.AddPrecF32("{}=float({})+float({});", inst, a, b);
} else {
ctx.AddF32("{}=float({})+float({});", inst, a, b);
}
}
void EmitFPAdd64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddF64("{}=double({})+double({});", inst, a, b);
if (Precise(inst)) {
ctx.AddPrecF64("{}=double({})+double({});", inst, a, b);
} else {
ctx.AddF64("{}=double({})+double({});", inst, a, b);
}
}
void EmitFPFma16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
@ -56,12 +69,20 @@ void EmitFPFma16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& i
void EmitFPFma32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b,
std::string_view c) {
ctx.AddF32("{}=fma({},{},{});", inst, a, b, c);
if (Precise(inst)) {
ctx.AddPrecF32("{}=fma({},{},{});", inst, a, b, c);
} else {
ctx.AddF32("{}=fma({},{},{});", inst, a, b, c);
}
}
void EmitFPFma64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b,
std::string_view c) {
ctx.AddF64("{}=fma({},{},{});", inst, a, b, c);
if (Precise(inst)) {
ctx.AddPrecF64("{}=fma({},{},{});", inst, a, b, c);
} else {
ctx.AddF64("{}=fma({},{},{});", inst, a, b, c);
}
}
void EmitFPMax32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
@ -86,11 +107,19 @@ void EmitFPMul16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& i
}
void EmitFPMul32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddF32("{}={}*{};", inst, a, b);
if (Precise(inst)) {
ctx.AddPrecF32("{}={}*{};", inst, a, b);
} else {
ctx.AddF32("{}={}*{};", inst, a, b);
}
}
void EmitFPMul64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddF64("{}={}*{};", inst, a, b);
if (Precise(inst)) {
ctx.AddPrecF64("{}={}*{};", inst, a, b);
} else {
ctx.AddF64("{}={}*{};", inst, a, b);
}
}
void EmitFPNeg16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,