GPU: Base work for hardware renderer

src/pse/gpu_hw_opengl.h

@@ -0,0 +1,44 @@
+#pragma once
+#include "gpu_hw.h"
+#include "glad.h"
+#include <array>
+
+class GPU_HW_OpenGL : public GPU_HW
+{
+public:
+  GPU_HW_OpenGL();
+  ~GPU_HW_OpenGL() override;
+
+  bool Initialize(Bus* bus, DMA* dma) override;
+  void Reset() override;
+
+protected:
+  virtual void DispatchRenderCommand(RenderCommand rc, u32 num_vertices) override;
+  virtual void FlushRender() override;
+
+private:
+  void CreateFramebuffer();
+  void ClearFramebuffer();
+  void DestroyFramebuffer();
+
+  void CreateVertexBuffer();
+
+  GLuint m_framebuffer_texture_id = 0;
+  GLuint m_framebuffer_fbo_id = 0;
+
+  GLuint m_vertex_buffer = 0;
+  GLuint m_vao_id = 0;
+
+  struct Program
+  {
+    GLuint program_id = 0;
+
+    bool IsValid() const { return program_id != 0; }
+    void Bind();
+    bool Compile(const std::string& vertex_shader, const std::string& fragment_shader);
+  };
+
+  Program m_texture_program;
+  Program m_color_program;
+};
+