91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <nihstro/shader_bytecode.h>
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#include "common/x64/emitter.h"
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#include "video_core/pica.h"
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#include "video_core/shader/shader.h"
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using nihstro::Instruction;
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using nihstro::OpCode;
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using nihstro::SwizzlePattern;
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namespace Pica {
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namespace Shader {
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using CompiledShader = void(void* registers);
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/**
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* This class implements the shader JIT compiler. It recompiles a Pica shader program into x86_64
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* code that can be executed on the host machine directly.
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*/
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class JitCompiler : public Gen::XCodeBlock {
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public:
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JitCompiler();
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CompiledShader* Compile();
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void Clear();
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void Compile_ADD(Instruction instr);
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void Compile_DP3(Instruction instr);
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void Compile_DP4(Instruction instr);
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void Compile_DPH(Instruction instr);
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void Compile_EX2(Instruction instr);
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void Compile_LG2(Instruction instr);
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void Compile_MUL(Instruction instr);
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void Compile_SGE(Instruction instr);
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void Compile_SLT(Instruction instr);
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void Compile_FLR(Instruction instr);
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void Compile_MAX(Instruction instr);
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void Compile_MIN(Instruction instr);
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void Compile_RCP(Instruction instr);
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void Compile_RSQ(Instruction instr);
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void Compile_MOVA(Instruction instr);
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void Compile_MOV(Instruction instr);
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void Compile_NOP(Instruction instr);
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void Compile_END(Instruction instr);
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void Compile_CALL(Instruction instr);
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void Compile_CALLC(Instruction instr);
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void Compile_CALLU(Instruction instr);
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void Compile_IF(Instruction instr);
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void Compile_LOOP(Instruction instr);
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void Compile_JMP(Instruction instr);
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void Compile_CMP(Instruction instr);
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void Compile_MAD(Instruction instr);
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private:
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void Compile_Block(unsigned stop);
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void Compile_NextInstr(unsigned* offset);
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void Compile_SwizzleSrc(Instruction instr, unsigned src_num, SourceRegister src_reg, Gen::X64Reg dest);
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void Compile_DestEnable(Instruction instr, Gen::X64Reg dest);
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/**
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* Compiles a `MUL src1, src2` operation, properly handling the PICA semantics when multiplying
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* zero by inf. Clobbers `src2` and `scratch`.
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*/
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void Compile_SanitizedMul(Gen::X64Reg src1, Gen::X64Reg src2, Gen::X64Reg scratch);
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void Compile_EvaluateCondition(Instruction instr);
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void Compile_UniformCondition(Instruction instr);
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BitSet32 PersistentCallerSavedRegs();
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/// Pointer to the variable that stores the current Pica code offset. Used to handle nested code blocks.
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unsigned* offset_ptr = nullptr;
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/// Set to true if currently in a loop, used to check for the existence of nested loops
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bool looping = false;
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};
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} // Shader
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} // Pica
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