Rename to DuckStation

src/core/gpu_hw_opengl.h

@@ -0,0 +1,77 @@
+#pragma once
+#include "common/gl_program.h"
+#include "common/gl_texture.h"
+#include "glad.h"
+#include "gpu_hw.h"
+#include <array>
+#include <memory>
+#include <tuple>
+
+class GPU_HW_OpenGL : public GPU_HW
+{
+public:
+  GPU_HW_OpenGL();
+  ~GPU_HW_OpenGL() override;
+
+  bool Initialize(System* system, DMA* dma, InterruptController* interrupt_controller, Timers* timers) override;
+  void Reset() override;
+  void RenderUI() override;
+
+protected:
+  void UpdateDisplay() override;
+  void ReadVRAM(u32 x, u32 y, u32 width, u32 height, void* buffer) override;
+  void FillVRAM(u32 x, u32 y, u32 width, u32 height, u16 color) override;
+  void UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data) override;
+  void CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 width, u32 height) override;
+  void FlushRender() override;
+  void InvalidateVRAMReadCache() override;
+
+private:
+  struct GLStats
+  {
+    u32 num_vram_read_texture_updates;
+    u32 num_batches;
+    u32 num_vertices;
+  };
+
+  std::tuple<s32, s32> ConvertToFramebufferCoordinates(s32 x, s32 y);
+
+  void CreateFramebuffer();
+  void ClearFramebuffer();
+  void DestroyFramebuffer();
+  void UpdateVRAMReadTexture();
+
+  void CreateVertexBuffer();
+
+  bool CompilePrograms();
+  bool CompileProgram(GL::Program& prog, bool textured, bool blending, bool transparent, TextureColorMode texture_color_mode);
+
+  void SetProgram();
+  void SetViewport();
+  void SetScissor();
+  void SetBlendState();
+
+  // downsample texture - used for readbacks at >1xIR.
+  std::unique_ptr<GL::Texture> m_vram_texture;
+  std::unique_ptr<GL::Texture> m_vram_read_texture;
+  std::unique_ptr<GL::Texture> m_vram_downsample_texture;
+  std::unique_ptr<GL::Texture> m_display_texture;
+
+  GLuint m_vram_fbo = 0;
+  GLuint m_vram_read_fbo = 0;
+  GLuint m_vram_downsample_fbo = 0;
+  GLuint m_display_fbo = 0;
+
+  GLuint m_vertex_buffer = 0;
+  GLuint m_vao_id = 0;
+  GLuint m_attributeless_vao_id = 0;
+
+  bool m_vram_read_texture_dirty = true;
+
+  std::array<std::array<std::array<std::array<GL::Program, 3>, 2>, 2>, 2> m_render_programs;
+  std::array<GL::Program, 3> m_texture_page_programs;
+
+  GLStats m_stats = {};
+  GLStats m_last_stats = {};
+  bool m_show_vram = false;
+};