Re: Sorted transparent billboards

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John Rohlf (jrohlf++at++tubes)
Mon, 31 Oct 94 13:49:47 PST

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>
> I have had similar problems with PFTR_NO_OCCLUDE. I had geosets that
> had a PFTR_NO_OCCLUDE flag in the Geostate and they occluded other geometry.
> When I use gltrace and glfprof, (gltrace produces OpenGL calls) there is
> no glDepthmask(GL_FALSE). Isn't that what there should be for a NO_OCCLUDE?
> --
>
> Sean Halliday
> Computer Graphics Software Developer
> New Media Research, Banff Centre for the Arts.
> halliday++at++BanffCentre.AB.CA

NO_OCCLUDE is supposed to set zwritemask(0). Looking at the
code I do see a possible bug if you are using decals, i.e., pfLayers,
since decals will reenable zwritemask. Does anybody have a
simple test case which I can debug? Perhaps I should come visit you
and chase this bug personally even though I hear Banff is a dump. 8-)

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