Rob Jenkins (robj++at++quid)
Wed, 26 Feb 1997 22:05:59 -0800
PFTR_ON
IRIS Performer will use a default transparency mechanism
depending on the machine being used.
I guess that's what you have ( via the pfdBldrStateMode call ) and is most
likely different on RE to Impact, if you need consistent appearance you could
try:
PFTR_HIGH_QUALITY
IRIS Performer will use a transparency mechanism that provides
the highest quality, not necessarily the fastest,
transparency.
Cheers
Rob
On Feb 26, 1:37pm, Guy Premont wrote:
> Subject: Transparent texture
> Hi,
>
> I'm porting an application that was designed with Performer 2.0.2 on an
> Onyx with IRIX 5.3 to an Indigo2 Max Impact R10000 using Performer 2.1
> and IRIS 6.2
>
> Everything works right except for a thing. I'm using textures with some
> transparency on one model and they don't appear the way they used to.
> What should be transparent is now mostly transparent ; from a distance
> the transparency appears as lines alternatively black and transparent,
> and up close it is transparent but it adds some grey to the color of
> what's behind. Has something changed in the use of transparent textures?
> I'm just doing
> pfdBldrStateMode(PFSTATE_ALPHAFUNC, PFAF_GREATER);
> pfdBldrStateVal(PFSTATE_ALPHAREF, (128.0f/255.0f));
> pfdBldrStateMode(PFSTATE_TRANSPARENCY, PFTR_ON);
> to define the GeoState of the object. What is wrong?
>
> Thanks
>
> Guy
>
>
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>-- End of excerpt from Guy Premont
--
________________________________________________________________
Rob Jenkins mailto:robj++at++csd.sgi.com
Silicon Graphics, Mtn View, California, USA
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