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split framebuffer.

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setup doublebuffering inside GPU.cpp.
avoid copying a whole framebuffer every frame. better performance at higher res.
This commit is contained in:
Arisotura
2019-05-12 15:01:40 +02:00
parent 939a376389
commit c88981b589
4 changed files with 91 additions and 37 deletions
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27
src/libui_sdl/main.cpp
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@ -95,7 +95,8 @@ char PrevSRAMPath[1024]; // for savestate 'undo load'
bool SavestateLoaded;
bool ScreenDrawInited = false;
uiDrawBitmap* ScreenBitmap = NULL;
uiDrawBitmap* ScreenBitmap[2] = {NULL,NULL};
SDL_mutex* ScreenMutex;
u32* ScreenBuffer;
int ScreenScale;
@ -555,7 +556,7 @@ int EmuThreadFunc(void* burp)
}
}
memcpy(ScreenBuffer, GPU::Framebuffer, (256*ScreenScale)*(384*ScreenScale)*4);
//memcpy(ScreenBuffer, GPU::Framebuffer, (256*ScreenScale)*(384*ScreenScale)*4);
uiAreaQueueRedrawAll(MainDrawArea);
// framerate limiter based off SDL2_gfx
@ -636,24 +637,27 @@ void OnAreaDraw(uiAreaHandler* handler, uiArea* area, uiAreaDrawParams* params)
if (!ScreenDrawInited)
{
ScreenDrawInited = true;
ScreenBitmap = uiDrawNewBitmap(params->Context, 256*ScreenScale, 384*ScreenScale);
ScreenBitmap[0] = uiDrawNewBitmap(params->Context, 256*ScreenScale, 384*ScreenScale);
ScreenBitmap[1] = uiDrawNewBitmap(params->Context, 256*ScreenScale, 384*ScreenScale);
}
if (!ScreenBitmap) return;
if (!ScreenBitmap[0] || !ScreenBitmap[1]) return;
uiRect top = {0, 0, 256*ScreenScale, 192*ScreenScale};
uiRect bot = {0, 192*ScreenScale, 256*ScreenScale, 192*ScreenScale};
uiRect bot = {0, 0, 256*ScreenScale, 192*ScreenScale};
if (ScreenBuffer) uiDrawBitmapUpdate(ScreenBitmap, ScreenBuffer);
int frontbuf = GPU::FrontBuffer;
uiDrawBitmapUpdate(ScreenBitmap[0], GPU::Framebuffer[frontbuf][0]);
uiDrawBitmapUpdate(ScreenBitmap[1], GPU::Framebuffer[frontbuf][1]);
uiDrawSave(params->Context);
uiDrawTransform(params->Context, &TopScreenTrans);
uiDrawBitmapDraw(params->Context, ScreenBitmap, &top, &TopScreenRect, Config::ScreenFilter==1);
uiDrawBitmapDraw(params->Context, ScreenBitmap[0], &top, &TopScreenRect, Config::ScreenFilter==1);
uiDrawRestore(params->Context);
uiDrawSave(params->Context);
uiDrawTransform(params->Context, &BottomScreenTrans);
uiDrawBitmapDraw(params->Context, ScreenBitmap, &bot, &BottomScreenRect, Config::ScreenFilter==1);
uiDrawBitmapDraw(params->Context, ScreenBitmap[1], &bot, &BottomScreenRect, Config::ScreenFilter==1);
uiDrawRestore(params->Context);
}
@ -1993,6 +1997,8 @@ int main(int argc, char** argv)
uiMenuItemDisable(MenuItem_Reset);
uiMenuItemDisable(MenuItem_Stop);
ScreenMutex = SDL_CreateMutex();
uiAreaHandler areahandler;
areahandler.Draw = OnAreaDraw;
areahandler.MouseEvent = OnAreaMouseEvent;
@ -2131,7 +2137,10 @@ int main(int argc, char** argv)
Config::Save();
if (ScreenBitmap) uiDrawFreeBitmap(ScreenBitmap);
SDL_DestroyMutex(ScreenMutex);
if (ScreenBitmap[0]) uiDrawFreeBitmap(ScreenBitmap[0]);
if (ScreenBitmap[1]) uiDrawFreeBitmap(ScreenBitmap[1]);
uiUninit();
SDL_Quit();