Re: Z-buffer problem

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Ran Yakir (rany++at++bvr.co.il)
Thu, 6 Oct 1994 13:46:44 +0000

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In reply to: jim++at++cs.unm.edu: "Using textures in Performer with Wavefront's .obj files"

When working with multisampling (as in an ONYX with RE2), the Z buffer is not
used to keep Z values. Instead, a Z value is attached to each subsample (or,
you might say, the Z buffer is multisampled). That explains why you could not
read valid values out of the Z buffer.

Maybe it is a good opportunity to ask SGI people for a documented way of
getting multisampled Z buffer values.

Ran

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In reply to: jim++at++cs.unm.edu: "Using textures in Performer with Wavefront's .obj files"

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