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[Shader JIT] Add caching

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wheremyfoodat 2023-06-07 20:33:37 +03:00
parent 364443d66f
commit 4064abfdeb
9 changed files with 77 additions and 5 deletions
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9
src/core/PICA/dynapica/shader_rec.cpp
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@ -1,7 +1,14 @@
#include "PICA/dynapica/shader_rec.hpp"
#include "cityhash.hpp"
#ifdef PANDA3DS_SHADER_JIT_SUPPORTED
void ShaderJIT::reset() {
cache.clear();
}
void ShaderJIT::prepare(PICAShader& shaderUnit) {
printf("HAPPY HAPPY HAPPY\n");
// We construct a shader hash from both the code and operand descriptor hashes
// This is so that if only one of them changes, we still properly recompile the shader
Hash hash = shaderUnit.getCodeHash() ^ shaderUnit.getOpdescHash();
}
#endif // PANDA3DS_SHADER_JIT_SUPPORTED

5
src/core/PICA/gpu.cpp
View file

@ -12,6 +12,7 @@ GPU::GPU(Memory& mem) : mem(mem), renderer(*this, regs) {
void GPU::reset() {
regs.fill(0);
shaderUnit.reset();
shaderJIT.reset();
std::memset(vram, 0, vramSize);
totalAttribCount = 0;
@ -84,6 +85,10 @@ void GPU::drawArrays() {
log("PICA::DrawElements(vertex count = %d, index buffer config = %08X)\n", vertexCount, indexBufferConfig);
}
if constexpr (useShaderJIT) {
shaderJIT.prepare(shaderUnit.vs);
}
// Total number of input attributes to shader. Differs between GS and VS. Currently stubbed to the VS one, as we don't have geometry shaders.
const u32 inputAttrCount = (regs[PICAInternalRegs::VertexShaderInputBufferCfg] & 0xf) + 1;
const u64 inputAttrCfg = getVertexShaderInputConfig();

26
src/core/PICA/shader_unit.cpp
View file

@ -1,4 +1,5 @@
#include "PICA/shader_unit.hpp"
#include "cityhash.hpp"
void ShaderUnit::reset() {
vs.reset();
@ -30,4 +31,29 @@ void PICAShader::reset() {
addrRegister.x() = 0;
addrRegister.y() = 0;
loopCounter = 0;
codeHashDirty = true;
opdescHashDirty = true;
}
PICAShader::Hash PICAShader::getCodeHash() {
// Hash the code again if the code changed
if (codeHashDirty) {
codeHashDirty = false;
lastCodeHash = CityHash::CityHash64((const char*)&loadedShader[0], loadedShader.size() * sizeof(loadedShader[0]));
}
// Return the code hash
return lastCodeHash;
}
PICAShader::Hash PICAShader::getOpdescHash() {
// Hash the code again if the operand descriptors changed
if (opdescHashDirty) {
opdescHashDirty = false;
lastOpdescHash = CityHash::CityHash64((const char*)&operandDescriptors[0], operandDescriptors.size() * sizeof(operandDescriptors[0]));
}
// Return the code hash
return lastOpdescHash;
}