Re: Problem with ClipTexture & PFPHASE_LOCK II
Don Burns (don_burns++at++peru.engr.sgi.com)
Wed, 24 Mar 1999 10:08:07 -0800 (PST)
On Mar 22, 4:03pm, Vicente Javier Sevilla Peris wrote:
> Subject: Problem with ClipTexture & PFPHASE_LOCK II
> Hello All
>
> Maybe I didn't explain my problem so good.
> Please, excuse me, I try to explain it, again.
> I haven't had problems with ircombine and PFPHASE_LOCK.
> I have an aplication that use cliptextures.
> This aplication works well in FREE_RUN mode, but sometimes drops from 60Hz to
> 30Hz.
> These drops are bad, because make an ugly effect, but no too bad, because the
> aplication requirement is a framerate of 30Hz with 3 channels.
> In order to avoid the drop effect I fix the frame rate with PFPHASE_LOCK to
> 30Hz, but works in a worse way that in a FREE_RUN mode.
> If I remove the cliptextures, the LOCK mode works fine, but with cliptextures
> works worse.
>
> Why works worse in LOCK mode?
>From Insight Performer Programmer's Guide :
> The alternative to displaying a new image out of phase is to display the old
image for the remainder of the
> current update period, then change to the new image at the normal time. This
locked phase extends each frame
> overrun to an integral multiple of the selected frame time, making the
overrun more evident but also
> maintaining phase throughout the simulation.
> How can I do to works better?
>
Try PFPHASE_LOCK
-don
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on Wed Mar 24 1999 - 10:08:12 PST