From: Benedikt Keßler (bjk++at++sgi.com)
Date: 05/24/2005 13:28:46
Hi,
probably the answer is as simple as this: are you sure that multisample
transparency is working at all on linux/windows. So far I've seen it
working only on Infinitereality graphic systems.
Bye! Benedikt
Scott A. Friedman wrote:
> Hi
>
> What is the correct way to use multisample transparency on the pc
> (linux/windows)? Specifically, I have a polygon that has a transparent
> alpha value assiciated with it. Behind this is a polygon with a texture
> that has transparency - the polygon its applied to has no transparency.
>
> Whenever this combination is rendered the textured polygon disappears
> completely unless PFTR_NO_OCCLUDE is set. This, however, does not always
> result is a correct result if the object centers come to be in the wrong
> order of distance.
>
> I have a framebuffer with multisampling (4 samples) and am setting the
> transparency mode to PFTR_MS_ALPHA. Although the man page says this uses
> GL_SAMPLE_ALPHA_TO_ONE. I noticed in the OpenGL docs that there is also
> a GL_SAMPLE_ALPHA_TO_COVERAGE - wouldn't this be what I want?
>
> Can someone explain to me what is going on here?
>
> Thanks,
> Scott
>
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