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vcarlson 10-03-2004 06:12 PM

PROBLEM: Picture-in-Picture breaks textures?!?
I am implementing a picture-in-picture view where the main view is what the user sees and a small windown in the corner shows an outside view of the user's avatar. The apprearence of the outside window is triggered by a keyboard callback like so:


def mykeyboard(button):
  global cheat, PinP # initialized as PinP = viz.add(viz.WINDOW)
  if button is ' ':      #space on keyboard toggles PinP window
    if cheat == 0:
      cheat = 1
      cheat = 0

The script runs without a problem (the PinP window is invisible at the beginning) undil the spacebar is pressed when all the textures go crazy (smearing, no detail, rectangular surfaces break in to two triangular polys), but textures on avatar faces remain normal!

is there somehting like a viz.REDRAW command, or some other way to solve this problem?

Note: after the textures are broken, toggling the extra window ON and OFF does not fix the texture problem.

tobin 10-04-2004 08:16 AM

What is your graphics hardware?

vr_boyko 10-04-2004 10:43 AM

Graphics hardware:
The graphics card is NVIDIA GeForce 6800 GT with freshly installed drivers, but the script does the same running on a GeForce 5900, so I do not think it's the graphics hardware. If needed, I can also send the swole script to you, mybe you'll get a better idea of what is going on with the textures and if the same thing happens on other graphics cards?

tobin 10-04-2004 10:47 AM

Yes, sounds like an interesting bug. Please zip and email the script and supporting files to Thanks.

vr_boyko 10-05-2004 04:22 PM

Problem solved!
I finally figured out the texture problem:

the culprit was in the windown initialization code:


othrPOV = viz.add(viz.VIEWPOINT)

I had switched the last two lines , so vizard didn't like hiding a window and changing its viewpoint.

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