Add GLSL shader gen files

include/PICA/shader_gen.hpp

@@ -0,0 +1,24 @@
+#pragma once
+#include <string>
+
+#include "PICA/gpu.hpp"
+#include "PICA/regs.hpp"
+#include "helpers.hpp"
+
+namespace PICA::ShaderGen {
+	// Graphics API this shader is targetting
+	enum class API { GL, GLES, Vulkan };
+
+	// Shading language to use (Only GLSL for the time being)
+	enum class Language { GLSL };
+
+	class FragmentGenerator {
+		using PICARegs = std::array<u32, 0x300>;
+		API api;
+		Language language;
+
+	  public:
+		FragmentGenerator(API api, Language language) : api(api), language(language) {}
+		std::string generate(const PICARegs& regs);
+	};
+};  // namespace PICA::ShaderGen