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| author | bunnei <bunneidev@gmail.com> | 2021-07-25 11:39:04 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-25 11:39:04 -0700 |
| commit | 98b26b6e126d4775fdf3f773fe8a8ac808a8ff8f (patch) | |
| tree | 816faa96c2c4d291825063433331a8ea4b3d08f1 /src/shader_recompiler/backend/glsl/var_alloc.h | |
| parent | c2aaf5137003868b2375b96ee84e2cb42d5f355e (diff) | |
| parent | 7f13104c1778cfdfd54350e92603164070781124 (diff) | |
Merge pull request #6585 from ameerj/hades
Shader Decompiler Rewrite
Diffstat (limited to 'src/shader_recompiler/backend/glsl/var_alloc.h')
| -rw-r--r-- | src/shader_recompiler/backend/glsl/var_alloc.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/shader_recompiler/backend/glsl/var_alloc.h b/src/shader_recompiler/backend/glsl/var_alloc.h new file mode 100644 index 0000000000..8b49f32a69 --- /dev/null +++ b/src/shader_recompiler/backend/glsl/var_alloc.h @@ -0,0 +1,105 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <bitset> +#include <string> +#include <vector> + +#include "common/bit_field.h" +#include "common/common_types.h" + +namespace Shader::IR { +class Inst; +class Value; +enum class Type; +} // namespace Shader::IR + +namespace Shader::Backend::GLSL { +enum class GlslVarType : u32 { + U1, + F16x2, + U32, + F32, + U64, + F64, + U32x2, + F32x2, + U32x3, + F32x3, + U32x4, + F32x4, + PrecF32, + PrecF64, + Void, +}; + +struct Id { + union { + u32 raw; + BitField<0, 1, u32> is_valid; + BitField<1, 4, GlslVarType> type; + BitField<6, 26, u32> index; + }; + + bool operator==(Id rhs) const noexcept { + return raw == rhs.raw; + } + bool operator!=(Id rhs) const noexcept { + return !operator==(rhs); + } +}; +static_assert(sizeof(Id) == sizeof(u32)); + +class VarAlloc { +public: + struct UseTracker { + bool uses_temp{}; + size_t num_used{}; + std::vector<bool> var_use; + }; + + /// Used for explicit usages of variables, may revert to temporaries + std::string Define(IR::Inst& inst, GlslVarType type); + std::string Define(IR::Inst& inst, IR::Type type); + + /// Used to assign variables used by the IR. May return a blank string if + /// the instruction's result is unused in the IR. + std::string AddDefine(IR::Inst& inst, GlslVarType type); + std::string PhiDefine(IR::Inst& inst, IR::Type type); + + std::string Consume(const IR::Value& value); + std::string ConsumeInst(IR::Inst& inst); + + std::string GetGlslType(GlslVarType type) const; + std::string GetGlslType(IR::Type type) const; + + const UseTracker& GetUseTracker(GlslVarType type) const; + std::string Representation(u32 index, GlslVarType type) const; + +private: + GlslVarType RegType(IR::Type type) const; + Id Alloc(GlslVarType type); + void Free(Id id); + UseTracker& GetUseTracker(GlslVarType type); + std::string Representation(Id id) const; + + UseTracker var_bool{}; + UseTracker var_f16x2{}; + UseTracker var_u32{}; + UseTracker var_u32x2{}; + UseTracker var_u32x3{}; + UseTracker var_u32x4{}; + UseTracker var_f32{}; + UseTracker var_f32x2{}; + UseTracker var_f32x3{}; + UseTracker var_f32x4{}; + UseTracker var_u64{}; + UseTracker var_f64{}; + UseTracker var_precf32{}; + UseTracker var_precf64{}; +}; + +} // namespace Shader::Backend::GLSL |