I've just started learning DirectX, starting with DirectDraw.
I've got a ball bouncing round the screen.
If I set the screen res to 640x480 it's pretty smooth, but if I set it to 800x600 then it's very jerky. Then I tried 1024x768, the ball is now moving very smoothly?
Can anyone help me? I want it to be smooth for all screen res settings.
I don't do any timing, is this the problem? If so, is there some sample code?