[CinCV TNG] Hardware acceleration problem

KhazAkar damianzrb at gmail.com
Thu Jun 7 01:49:13 CEST 2018


Ah, ok. Thanks very much for explaining it for me. I really love your work
done on Cinelerra side.

czw., 7 cze 2018 o 00:42 użytkownik Good Guy <good1.2guy at gmail.com> napisał:

> This is the way it works since Adam Williams added the Direct Path
> changes to the vdeviceX11 code.  It is a direct draw path and the
> execution time for that path is low when the render does not require
> remapping.  This is not a bug, it is a good idea.  It is fastest.
>
> Next, X11-Xv is a device mapped video draw.  it is fast, but apparently
> not as fast as the direct draw.  It can do hardware scaling and color
> mapping.
>
> OpenGL means that drawing is using a second level machine, which
> brings good functional features, but may be slower yet to just buffer
> video frames.
>
>
>
> On Wed, Jun 6, 2018 at 4:26 PM KhazAkar <damianzrb at gmail.com> wrote:
>
>> I have a strange problem with X11-Xv and X11-OpenGL preview in
>> Cinelerra-GG.
>> X11 is the fastest option for me for preview, X11-Xv slover and
>> X11-OpenGL - the slowest. Why this is happening?
>> My setup:
>> Dell Precision 5510 with i7-6820HQ, 32 GB DDR4 RAM, 512 GB Samsung SSD,
>> Quadro M1000M, 4k IGZO display, OpenSUSE Tumbleweed, newest kernel etc.
>> Why this is happening? Some sort of bug?
>>
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