split framebuffer.

setup doublebuffering inside GPU.cpp.
avoid copying a whole framebuffer every frame. better performance at higher res.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/GPU.h b/src/GPU.h
index a430a32..2e47fc4 100644
--- a/src/GPU.h
+++ b/src/GPU.h
@@ -61,7 +61,8 @@ extern u32 VRAMMap_Texture[4];
 extern u32 VRAMMap_TexPal[8];
 extern u32 VRAMMap_ARM7[2];
 
-extern u32* Framebuffer;
+extern int FrontBuffer;
+extern u32* Framebuffer[2][2];
 
 extern GPU2D* GPU2D_A;
 extern GPU2D* GPU2D_B;
@@ -74,7 +75,7 @@ void Stop();
 
 void DoSavestate(Savestate* file);
 
-void SetFramebufferScale(int scale);
+void SetFramebufferScale(int top, int bottom);
 
 
 void MapVRAM_AB(u32 bank, u8 cnt);