display now only draws chipxels that have changed

2025-03-14 17:35:31 -04:00
parent ac5313a6ca
commit 22526c1b90
2 changed files with 51 additions and 25 deletions
--- a/DisplaySDL.hpp
+++ b/DisplaySDL.hpp
@@ -13,12 +13,14 @@ public:
  ~DisplaySDL() override;
  void clear() override;
  int blit(const chocochip8::Scanline &scanline, int y) override;
-  void updateWindow() const;
+  void updateWindow(bool forceWindowUpdate = false) const;

 private:
  using Framebuffer = std::array<chocochip8::Scanline, chocochip8::gcHeight>;
  std::unique_ptr<Framebuffer> mpFramebuffer;
+  mutable std::unique_ptr<Framebuffer> mpDisplayState;
  SDL_Window *mpWindow;
  Uint32 mFgColor;
  Uint32 mBgColor;
+  mutable bool mDoClear;
 };