pfAntialias and the alpha buffer

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Simon Gibbs (simon++at++viswiz.gmd.de)
Mon, 9 Jan 95 15:40:48 MET

We are using an RE2 and would like to render into the alpha buffer
(to create masks for downstream video keying) without turning off
antialiasing - is this possible?

It seems that pfAntialias(PFAA_ON) configures things so that the
alpha buffers are totally bypassed. I realize that with an RE2,
antialiasing and transparency are obtained from multisampling.
But for our application we do not want to use the alpha buffers
for transparency, just for creating the masks.

Simon Gibbs
GMD

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