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motion blur example with glAccum()

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Started by zwirdsch December 07, 2002 07:20 PM

3 comments, last by zwirdsch 21 years, 4 months ago

zwirdsch

122

Author

December 07, 2002 07:20 PM

Hi there, is there anybody who can give any hint how to implement the motion blur effect with the function "glAccum()", I've searched nearly the whole web for finding this example, I've only found motion blur effects implemented with the "glCopyToTexture()" function. I would be really thankful if someone could give me a link to a demo file or the source code, just something I could work with. Thanks, zwirdsch. [edited by - zwirdsch on December 7, 2002 8:21:32 PM]

Run_The_Shadows

634

December 07, 2002 08:07 PM

One would ask why you don''t use the (implied) well-documented glCopyToTexture() motion blur effect rather than one that is obviously a bit less well-noted.

-Ryan "Run_The_Shadows"
-Run_The_Shadows@excite.com
-The Navidson Record! The best film you''ll never see!

zwirdsch

122

Author

December 08, 2002 02:51 PM

Because I want to compare these two functions, I wanna see the differences. And why is the motion blur effect explained with "glAccum()" in most books when nobody uses it?
zwirdsch

OrangyTang

1,298

December 08, 2002 06:23 PM

As far as I know, the accumulation buffer isn''t supported in hardware by any consumer cards (high end SGI workstations and the like only) and so is dog slow. Although later Voodoo cards had a cut-down accumulation buffer called the T-buffer, but it was limited and is pretty much dead nowadays.