I'm still convinced the bug is mine; however, I ran my vertex/fragment
program pair on, gasp, Windows XP with a GeForce FX Go5200, and I get
pretty much the results I was expecting to get (even though my fragment
program is not producing the correct alpha values). And that applies
to both textured and non-textured surfaces...
Thank you,
Dario
On 22 Nov 2004, at 1:00, Keith Bauer wrote:
Are you using textures at all in the fragment version? Your
non-fragment version shows the floor at least is textured, but your
vertex and pixel programs make no mention of doing texture lookups.
Having textures enabled but not used may be confusing the board and
producing the random image effect you see.
The ARBfp spec explicitly states that texture enables are ignored. If
what you suggest was true, it would still be a bug ;)
-Keith
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