SVGA modes and ATI : a solution, but...

[Jark]

When I switch to SVGA modes with the ATI graphic card of my machine (under XP), the screen is messed up when I quit QB.

By chance, I downloaded a demo from http://www.farb-rausch.com
called "The Product". It's based on DirectX 8.0.

Let's say I've just run an SVGA prog with QB, and the screen is messed up. If I run the farb-rausch demo, and I come back to XP, the screen is OK !!!!!

That means there is a video mode switching in this demo that resets the video board to its original state.

Can anybody tell me what I should add to my QB Vesa progs to have the same benefic effect ?

[Ninkazu]

Doesn't

Code:

SCREEN 0: WIDTH 80

do that for you?

[Blitz]

Yeah, the latest ATI real mode vesa bioses are screwed. Nothing you can do about it.

[Antoni Gual]

Remember it's Windows task manager behind the back of DOS. So probably there is nothing you can do in DOS...
However I thinK there are functions in VESA standard to calculate space to save screen parameters, do actually the saving an to recover the parameters. You could experiment with that....

[Antoni Gual]

But....
Idea!!!
You could render your images to EMS and simply copy them to screen at intervals and/or at the end of the rendering. So it would'nt mater if you switched tasks during the rendering....Another Sub-lib for TCLib!!!

[Jark]

Yes, I know I have to study that EMS-XMS stuff... I got some tutorials about that, it's just a matter of time