[vlc-devel] [RFC] video_output: handle a second picture to display for Frame Sequential 3D sources

Steve Lhomme robux4 at ycbcr.xyz
Thu Aug 23 07:54:31 CEST 2018

On 22/08/2018 17:46, Rémi Denis-Courmont wrote:
> Le keskiviikkona 22. elokuuta 2018, 10.15.23 EEST Steve Lhomme a écrit :
>> Hi,
>> On 21/08/2018 16:05, Rémi Denis-Courmont wrote:
>>> 	Hi,
>>> I don't like to made a special case stereoscopy - for comparison, there
>>> are no special cases for anisotropy.
>> What is anisotropy in the context VLC ?
> It can be non-square samples, non-square pixels (monitor-par) and/or non-
> rectangular projection.

Changes in the source projection are currently not supported. It would 
cause the exact same issues we have with restarting a vout (because the 
one used may not be the correct one, on Win7 for example a D3D9>OpenGL 
switch is needed) and it would break the direct rendering in use.

The PAR/SAR are just metadata that are supported dynamically by all vout 
that support direct rendering. If they don't support DR it would be OK 
to recreate them.

So the real issue is to support the dynamic source change properly when 
DR is used. Some properties are easily handled, some are not.

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