RE: [info-performer] Subload pfTexture across multiple pipes

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From: Dick Rous (dick++at++sgi.com)
Date: 10/29/2003 02:47:32


Have you checked if the subload code in the draw callback is executed for
each pipe?

- Dick.

> -----Original Message-----
> From: Volodymyr Kindratenko [mailto:kindr++at++ncsa.uiuc.edu]
> Sent: Wednesday, 29 October, 2003 01:08
> To: info-performer++at++sgi.com
> Subject: [info-performer] Subload pfTexture across multiple pipes
>
>
>
> Hello:
>
> I need to build a rear view mirror for a driver
> simulator. To do
> this, I define a separate channel for rendering rear view
> mirror image and
> in that channel's draw callback I subload the relevant
> portion of the frame
> buffer to the appropriate pfTexture. This works just fine on
> a single pipe
> system. How can I share this texture across multiple pipes
> (CAVE)? In the
> CAVE I see that the correct image is applied to a portion of
> the mirror
> polygon residing on the front wall (I use the front wall's
> pipe rendering
> the rear view channel), and nothing is applied to the portion
> of the polygon
> residing for example on the left wall. Basically, the
> texture image is not
> shared between the pipes. Please help!
>
> Volodymyr Kindratenko
> NCSA, UIUC
>
>
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