DCoder
25.10.2011, 19:43:21
Whoa, deja vu.
The game lags like ass because the drawing routines are ass. They do all blitting and translucency in software, and do RLE unpacking of all compressed SHPs every time they need to be drawn. Because they do blitting in software, they have to Lock() and Unlock() the surfaces around each drawing operation. If the surfaces are in video RAM (like the sidebar is by default), that causes major pain because the surface pixel data has to be copied from VRAM to system RAM, and back afterwards.
The game lags like ass because the drawing routines are ass. They do all blitting and translucency in software, and do RLE unpacking of all compressed SHPs every time they need to be drawn. Because they do blitting in software, they have to Lock() and Unlock() the surfaces around each drawing operation. If the surfaces are in video RAM (like the sidebar is by default), that causes major pain because the surface pixel data has to be copied from VRAM to system RAM, and back afterwards.