[Public WebGL] Some WebGL draft feedback

Mark Callow [email protected]
Wed Jan 13 20:00:31 PST 2010

Khronos has developed an extension for supporting video in GL textures. 
I'm not sure if it is public yet. Whatever we do needs to be compatible.



Kenneth Russell wrote:
> On Wed, Jan 13, 2010 at 7:22 AM, Chris Marrin <[email protected] 
> <mailto:[email protected]>> wrote:
>     ...
>     This is something I have been thinking about for Video elements as
>     well. "Use" semantics would allow a hardware video buffer to be
>     used as a texture source (given the proper support in the
>     implementation. For instance:
>            gl.useTexture(videoElement);
>     Now whenever this texture is used as an image source the
>     implementation would need to make the video frame available. On
>     some impementations this would be pretty much the equivalent of
>     texImage2D (copying pixels). But on some a hardware video buffer
>     could be made available. The same is true of Canvas elements.
>     But all of this should be left till the second release of the spec.
> I agree that a proposal such as this should be left for a future 
> revision of the spec. It seems to me that it would introduce even 
> worse synchronization problems than supporting multiple rendering 
> contexts on a single canvas.
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