Force Microsoft drivers

OpenGL
1

Hi All,
Is there any way to force microsoft generic drivers while rendering?
Because I have latest ATI drivers and there are problems with my program when using microsoft drivers(As complained by my users).
How do I debug?
I am sure I am using opengl v1.1 api’s.

Thanks for going through.
Yogesh

2

You can simply select one from the list of pixelformats.

Normally the whole list contains the formats exported by the installable client driver (ICD) first followed by a list of Microsoft GDI Generic pixelformats.

Enumerate them yourself with DescribePixelFormat() (ChoosePixelFormat() is too dumb!) and pick one which matches your desired capabilities best AND has dwFlags PFD_GENERIC_FORMAT set.

Not that this implementation is bug free…

You could also just deinstall the ATI driver and run in VGA mode.

3

Just drop “opengl32.dll” in the executable directory.

4

You’re asking if you can switch between software and hardware rendering on-the-fly, whenever you want?

I would think you would have to destroy your device and re-created it every single time,
if you wanted to make a switch like that.

5

Hi,

  1. Dropping the opengl32.dll in .exe folder dosen’t seem to help.Application still picks up the ATI Drivers.

2.Will try the DescribePixelFormat() function.

  1. un-installing is a cumbersome job.Would stay away from that :frowning:

Thanks for all the help.
Yogesh

6

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