Separate renderer and PICA completely

include/renderer_gl/renderer_gl.hpp

@@ -0,0 +1,44 @@
+#pragma once
+#include <array>
+#include "helpers.hpp"
+#include "logger.hpp"
+#include "opengl.hpp"
+
+struct Vertex {
+	OpenGL::vec4 position;
+	OpenGL::vec4 colour;
+};
+
+class Renderer {
+	// OpenGL renderer state
+	OpenGL::Framebuffer fbo;
+	OpenGL::Texture fboTexture;
+	OpenGL::Program triangleProgram;
+	OpenGL::Program displayProgram;
+
+	OpenGL::VertexArray vao;
+	OpenGL::VertexBuffer vbo;
+	GLint alphaControlLoc = -1;
+	u32 oldAlphaControl = 0;
+
+	// Dummy VAO/VBO for blitting the final output
+	OpenGL::VertexArray dummyVAO;
+	OpenGL::VertexBuffer dummyVBO;
+
+	static constexpr u32 regNum = 0x300; // Number of internal PICA registers
+	const std::array<u32, regNum>& regs;
+
+	MAKE_LOG_FUNCTION(log, rendererLogger)
+
+public:
+	Renderer(const std::array<u32, regNum>& internalRegs) : regs(internalRegs) {}
+
+	void reset();
+	void display(); // Display the 3DS screen contents to the window
+	void initGraphicsContext(); // Initialize graphics context
+	void getGraphicsContext();  // Set up graphics context for rendering
+	void clearBuffer(u32 startAddress, u32 endAddress, u32 value, u32 control); // Clear a GPU buffer in VRAM
+	void drawVertices(OpenGL::Primitives primType, Vertex* vertices, u32 count); // Draw the given vertices
+
+	static constexpr u32 vertexBufferSize = 0x1500;
+};