for anything to be displayed to a monitor it must go through the 2d card as well as the 3d, if you want openGL acceleration.
Aaah, IF you want OpenGL acceleration. But a 3D card is not necessary, as opengl runs in software.
levon wrote:...and anything directx is done with you 3D card if its a directX 3D card, like most the geforce and radeons are now, if not all.
If there's no 3D card present, DirectX/Direct3D calls for a primary display driver and accelerates everything in software mode (and that's rather slow).
levon wrote:back in the voodoo 2 days, when they were only a 3d card and not a 2d card, you had to plug your 2d card into your 3d card, then your 3d card to the monitor. these days the 2d card is built into your 3d card, and for anything to be drawn on the monitor it must go through it.
Aaah, if it's a 2D VGA card, then it's obviously needed (to convert data into color) but 3D acceleration is not anything mandatory.
Let's just drop the subject. I don't feel like fighting today or any day.
What could be the cause of the banding? Maybe a dithered render display feature might help, but I'm not sure.