[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.

Regards

    -Mark

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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