[Mesa-dev] [PATCH] mesa/r300classic: Fix dri2Invalidate/radeon_prepare_render for page flipping.

[Mario Kleiner]

Alex Deucher is currently preparing patches for page-flipped
bufferswaps on radeon hardware. Testing these on a RV530 gpu
with the R300 classic driver exposed a bug - We call
radeon_prepare_render() too late. This causes massive
visual corruption and eventually graphics hangs.

The following patch fixes this. Please review and apply,
probably also to the mesa stable release.

thanks,
-mario