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Cem UZUNLAR
04-27-2002, 06:18 PM
why do all pixelformats which are returned by DescribePixelFormat have 64 bits accumulation buffer?

System is:
WinXP Pro
GeForce 2 GTS
28.90

NOTE: I mention the ones whose
PFD_DRAW_TO_WINDOW
PFD_SUPPORT_OPENGL
PFD_DOUBLEBUFFER
are set and
PFD_GENERIC_FORMAT
is not set.

SirKnight
04-27-2002, 06:57 PM
Well i know that the accel buffer is not supported in hardware on any consumer card but i do know that the accum buffer requires a 64bit depth because it needs all of that precision to work. There was a post a while back about this, Matt from nvidia was talking about that.

-SirKnight

mcraighead
04-29-2002, 06:00 PM
I don't see how the presence of an accumulation buffer is harmful? (And yes, we can lazily allocate it, so unless you use it, it costs you nothing.)

- Matt