[theora-dev] Theora on iPhone

Arek Korbik arkadini at gmail.com
Tue Oct 7 14:04:33 PDT 2008

On Tue, Oct 7, 2008 at 9:59 PM, Ralph Giles <giles at xiph.org> wrote:
> On Tue, Oct 7, 2008 at 12:56 PM, Steven Woolley <woobert at gmail.com> wrote:
>> b) convert from YUV to RGB using pixel shading (If it sounds like I don't
>> know what I'm talking about, that's correct... I've simply seen smarter
>> people talk about doing the conversion on the GPU using pixel shading???)
> If you can do this with opengl-es and get gpu accelleration, this is
> the way to go. Then backport your code to the sdl port so everyone
> else can use it. I don't know how to do this, but there are lots of
> examples. You could try asking macslow for help if you get stuck; he's
> done a lot opengl media player work.

Yes, these days colorspace conversion is definitely something people
use pixel shaders for. Mirco's opengl video player is probably a good
example or you can have a look at pigment[1] where colorspace
conversion was the first use of pixel shaders.


[1]: https://code.fluendo.com/pigment/trac

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