[PD] gemwin frame rate limit?

[William Brent]

Ok, thanks again Chris and Cyrille.  That helps a lot, and I'll see
what I can do from this point.

William

On Thu, May 31, 2012 at 12:06 PM, chris clepper <cgclepper at gmail.com> wrote:
> On Thu, May 31, 2012 at 8:36 AM, William Brent <william.brent at gmail.com>
> wrote:
>>
>> Thanks Chris & Cyrille.  I don't have an nvidia GPU, so I'll see what I
>> can find in the Xorg.conf.  For totally digital displays, how does the
>> refresh rate come into play?  I'm seeing out there that VBL doesn't apply to
>> digital.
>
>
> The refresh rate for LCD is 60Hz although internally many process at 120 or
> even higher.
>
>>
>> I tried single buffer mode with each metro tick banging the gemhead and
>> then clearing the gemwin, but got jittery results with the video stream.
>
>
> Without syncing to the refresh rate the video display will be jittery and
> also have tearing artifacts.  As Cyrille points out there are ways to run
> gemheads at higher speeds, but you want to keep all of the drawing objects
> at refresh rate.
>



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William Brent
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