[Shader JIT[ Cache harder

src/core/PICA/dynapica/shader_rec.cpp

@@ -9,6 +9,17 @@ void ShaderJIT::reset() {
 void ShaderJIT::prepare(PICAShader& shaderUnit) {
 	// 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
+	// This code is inspired from how Citra solves this problem
 	Hash hash = shaderUnit.getCodeHash() ^ shaderUnit.getOpdescHash();
+	auto it = cache.find(hash);
+
+	if (it == cache.end()) { // Block has not been compiled yet
+		auto emitter = std::make_unique<ShaderEmitter>();
+		cache.emplace_hint(it, hash, std::move(emitter));
+	} else { // Block has been compiled and found, use it
+
+	}
+
+	shaderUnit.pc = shaderUnit.entrypoint;
 }
 #endif // PANDA3DS_SHADER_JIT_SUPPORTED