More shader JIT groundwork

include/PICA/dynapica/shader_rec.hpp

@@ -0,0 +1,21 @@
+#pragma once
+#include "PICA/shader.hpp"
+
+class ShaderJIT {
+	void compileShader(PICAShader& shaderUnit);
+
+public:
+#if defined(PANDA3DS_DYNAPICA_SUPPORTED) && defined(PANDA3DS_X64_HOST)
+	#define PANDA3DS_SHADER_JIT_SUPPORTED
+
+	// Call this before starting to process a batch of vertices
+	// This will read the PICA config (uploaded shader and shader operand descriptors) and search if we've already compiled this shader
+	// If yes, it sets it as the active shader. if not, then it compiles it, adds it to the cache, and sets it as active,
+	void prepare(PICAShader& shaderUnit);
+#else
+	void prepare(PICAShader& shaderUnit) {
+		Helpers::panic("Vertex Loader JIT: Tried to load vertices with JIT on platform that does not support vertex loader jit");
+	}
+#endif
+
+};