Around 16 o'clock on Jun 4, Mark Vojkovich wrote:
> I think maybe fewer 32bpp hardware can do destination alpha than > you realize. It's not so much a matter of "doing" destination alpha than of having storage for any intermediate alpha values used in pixel computations. As long as the frame buffer provides 4 bytes of storage for each pixel, the Render code can use the additional storage for destination alpha data. Whether rendering with the destination alpha is accelerated in hardware is a separate issue. Of course, for destinations which don't have storage, the application can create an external alpha buffer. Render happily uses separate pixmaps to store alpha data. Keith Packard XFree86 Core Team HP Cambridge Research Lab _______________________________________________ Render mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/render
