glsl: Implement precise fp variable allocation
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@ -118,6 +118,16 @@ public:
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Add<GlslVarType::F32x4>(format_str, inst, args...);
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}
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template <typename... Args>
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void AddPrecF32(const char* format_str, IR::Inst& inst, Args&&... args) {
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Add<GlslVarType::PrecF32>(format_str, inst, args...);
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}
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template <typename... Args>
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void AddPrecF64(const char* format_str, IR::Inst& inst, Args&&... args) {
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Add<GlslVarType::PrecF64>(format_str, inst, args...);
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}
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template <typename... Args>
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void Add(const char* format_str, Args&&... args) {
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code += fmt::format(format_str, std::forward<Args>(args)...);
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@ -6,6 +6,7 @@
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#include "shader_recompiler/backend/glsl/emit_context.h"
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#include "shader_recompiler/backend/glsl/emit_glsl_instructions.h"
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#include "shader_recompiler/frontend/ir/modifiers.h"
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#include "shader_recompiler/frontend/ir/value.h"
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namespace Shader::Backend::GLSL {
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@ -20,6 +21,10 @@ void Compare(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string
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}
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ctx.code += ";";
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}
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bool Precise(IR::Inst& inst) {
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return {inst.Flags<IR::FpControl>().no_contraction};
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}
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} // namespace
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void EmitFPAbs16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
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@ -41,11 +46,19 @@ void EmitFPAdd16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& i
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}
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void EmitFPAdd32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
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ctx.AddF32("{}=float({})+float({});", inst, a, b);
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if (Precise(inst)) {
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ctx.AddPrecF32("{}=float({})+float({});", inst, a, b);
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} else {
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ctx.AddF32("{}=float({})+float({});", inst, a, b);
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}
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}
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void EmitFPAdd64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
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ctx.AddF64("{}=double({})+double({});", inst, a, b);
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if (Precise(inst)) {
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ctx.AddPrecF64("{}=double({})+double({});", inst, a, b);
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} else {
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ctx.AddF64("{}=double({})+double({});", inst, a, b);
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}
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}
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void EmitFPFma16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
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@ -56,12 +69,20 @@ void EmitFPFma16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& i
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void EmitFPFma32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b,
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std::string_view c) {
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ctx.AddF32("{}=fma({},{},{});", inst, a, b, c);
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if (Precise(inst)) {
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ctx.AddPrecF32("{}=fma({},{},{});", inst, a, b, c);
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} else {
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ctx.AddF32("{}=fma({},{},{});", inst, a, b, c);
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}
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}
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void EmitFPFma64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b,
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std::string_view c) {
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ctx.AddF64("{}=fma({},{},{});", inst, a, b, c);
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if (Precise(inst)) {
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ctx.AddPrecF64("{}=fma({},{},{});", inst, a, b, c);
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} else {
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ctx.AddF64("{}=fma({},{},{});", inst, a, b, c);
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}
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}
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void EmitFPMax32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
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@ -86,11 +107,19 @@ void EmitFPMul16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& i
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}
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void EmitFPMul32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
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ctx.AddF32("{}={}*{};", inst, a, b);
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if (Precise(inst)) {
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ctx.AddPrecF32("{}={}*{};", inst, a, b);
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} else {
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ctx.AddF32("{}={}*{};", inst, a, b);
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}
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}
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void EmitFPMul64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
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ctx.AddF64("{}={}*{};", inst, a, b);
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if (Precise(inst)) {
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ctx.AddPrecF64("{}={}*{};", inst, a, b);
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} else {
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ctx.AddF64("{}={}*{};", inst, a, b);
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}
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}
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void EmitFPNeg16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
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@ -43,6 +43,10 @@ std::string TypePrefix(GlslVarType type) {
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return "u4_";
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case GlslVarType::F32x4:
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return "f4_";
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case GlslVarType::PrecF32:
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return "pf_";
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case GlslVarType::PrecF64:
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return "pd_";
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case GlslVarType::Void:
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return "";
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default:
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@ -225,6 +229,10 @@ std::string VarAlloc::GetGlslType(GlslVarType type) const {
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return "uvec4 ";
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case GlslVarType::F32x4:
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return "vec4 ";
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case GlslVarType::PrecF32:
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return "precise float ";
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case GlslVarType::PrecF64:
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return "precise double ";
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case GlslVarType::Void:
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return "";
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default:
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@ -262,6 +270,10 @@ VarAlloc::UseTracker& VarAlloc::GetUseTracker(GlslVarType type) {
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return var_u32x4;
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case GlslVarType::F32x4:
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return var_f32x4;
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case GlslVarType::PrecF32:
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return var_precf32;
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case GlslVarType::PrecF64:
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return var_precf64;
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default:
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throw NotImplementedException("Type {}", type);
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}
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@ -297,6 +309,10 @@ const VarAlloc::UseTracker& VarAlloc::GetUseTracker(GlslVarType type) const {
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return var_u32x4;
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case GlslVarType::F32x4:
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return var_f32x4;
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case GlslVarType::PrecF32:
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return var_precf32;
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case GlslVarType::PrecF64:
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return var_precf64;
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default:
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throw NotImplementedException("Type {}", type);
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}
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@ -33,6 +33,8 @@ enum class GlslVarType : u32 {
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F32x3,
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U32x4,
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F32x4,
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PrecF32,
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PrecF64,
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Void,
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};
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@ -40,8 +42,8 @@ struct Id {
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union {
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u32 raw;
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BitField<0, 1, u32> is_valid;
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BitField<1, 4, GlslVarType> type;
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BitField<5, 27, u32> index;
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BitField<1, 5, GlslVarType> type;
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BitField<6, 26, u32> index;
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};
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bool operator==(Id rhs) const noexcept {
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@ -101,6 +103,8 @@ private:
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UseTracker var_u64{};
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UseTracker var_s64{};
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UseTracker var_f64{};
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UseTracker var_precf32{};
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UseTracker var_precf64{};
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};
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} // namespace Shader::Backend::GLSL
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