Shawn Soeder (shawn_soeder++at++esplt14m-s.grumman.com)
23 Jan 1996 09:36:35 -0500
I am running a visual simulation on an Indigo2 High Impact (IRIX 5.3) using
Performer 1.2. The program, basically a modified version of perfly, does not
render blended alpha values correctly. I have a partially transparent layer
on top of an opaque one, and only the areas where alpha = 1 or 0 is the
transparency correct, and everywhere else no blending occurs (appears to be
blended with black). This model and program behave correctly when run on RE
graphics. The same problem also occurs when loading this model into the
stock perfly.
I suspect the problem has to do with Performer not knowing about Impact
graphics. When I start the program, I get the following warning:
> Performer Warning (2): Unable to determine graphics type 15. Default:
VGXT using gfx
> type mode = 0x4010003
According to the brochures, the High Impact does support alpha blending. Do
I need to change something so that Performer 1.2 recognizes Impact gfx?
Shortly, I will start running this code on a Maximum Impact. Will this
require further changes to recognize Max Impact gfx?
Thanks for any help,
Shawn Soeder
shawn_soeder++at++grumman.com
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