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[Shader JIT] Moar

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wheremyfoodat 2023-06-08 18:51:03 +03:00
parent 6a70edca7e
commit 415e276ef9
7 changed files with 51 additions and 8 deletions
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9
include/PICA/dynapica/shader_rec.hpp
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@ -7,8 +7,7 @@
#include <unordered_map>
#ifdef PANDA3DS_X64_HOST
#include "xbyak/xbyak.h"
using ShaderEmitter = Xbyak::CodeGenerator;
#include "shader_rec_emitter_x64.hpp"
#endif
#endif
@ -16,6 +15,7 @@ class ShaderJIT {
#ifdef PANDA3DS_SHADER_JIT_SUPPORTED
using Hash = PICAShader::Hash;
using ShaderCache = std::unordered_map<Hash, std::unique_ptr<ShaderEmitter>>;
ShaderEmitter::Callback activeShaderCallback;
ShaderCache cache;
void compileShader(PICAShader& shaderUnit);
@ -35,8 +35,13 @@ public:
Helpers::panic("Vertex Loader JIT: Tried to load vertices with JIT on platform that does not support vertex loader jit");
}
// Define dummy callback. This should never be called if the shader JIT is not supported
using Callback = void(*)(PICAShader& shaderUnit);
Callback activeShaderCallback = nullptr;
void reset() {}
static constexpr bool isAvailable() { return false; }
#endif
auto getCallback() { return activeShaderCallback; }
};

23
include/PICA/dynapica/shader_rec_emitter_x64.hpp Normal file
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@ -0,0 +1,23 @@
#pragma once
// Only do anything if we're on an x64 target with JIT support enabled
#if defined(PANDA3DS_DYNAPICA_SUPPORTED) && defined(PANDA3DS_X64_HOST)
#include "helpers.hpp"
#include "PICA/shader.hpp"
#include "xbyak/xbyak.h"
#include "x64_regs.hpp"
class ShaderEmitter : public Xbyak::CodeGenerator {
static constexpr size_t executableMemorySize = PICAShader::maxInstructionCount * 96; // How much executable memory to alloc for each shader
// Allocate some extra space as padding for security purposes in the extremely unlikely occasion we manage to overflow the above size
static constexpr size_t allocSize = executableMemorySize + 0x1000;
public:
using Callback = void(*)(const PICAShader& shaderUnit);
// Initialize our emitter with "allocSize" bytes of RWX memory
ShaderEmitter() : Xbyak::CodeGenerator(allocSize) {}
void compile(const PICAShader& shaderUnit);
};
#endif // x64 recompiler check