[SDL] Performance issues

[Edward Byard]

Hi Folks,

I'm pretty new to video programming, but have many years of experience on embedded systems (mechanical control systems mostly).

Anyway, I'm writing a slot machine simulator, and am having problems getting performance out of the system. Basically, I'm using SDL_ BlitSurface to blit a portion of an image to a rectangle, and it's pretty slow (800x600,16bpp,double-buffered).

Now, am I missing something? I have a background image, which I then place the aforementioned rectangle on. I don't re-draw the background at all - just update the rectangle. Is this making any sense?

If someone can help, I'd appreciate it...
 
Thanks
Ed

 		
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