[Public WebGL] color_buffer_float

Mark Callow [email protected]
Tue Apr 8 20:43:39 PDT 2014


On 2014/04/08 17:37, Florian Bösch wrote:
> On Tue, Apr 8, 2014 at 4:25 AM, Mark Callow
> <[email protected] <mailto:[email protected]>> wrote:
>
>     What is wrong is that WebGL2 implementations should not be
>     exposing WebGL_color_buffer_float as that is for OpenGL ES 2 and
>     leaves a lot of OES 3 and desktop features on the table and leaves
>     open the question of exactly what is the format of "FLOAT".
>
>  
> So the 6 extensions that cover floats (half/single | color buffer |
> linear) are now obsolete?
Yes.
>
> I see one problem with disabling these 6 extensions (or any of them).
> If somebody does a canvas.getContext('webgl') and they get a WebGL 2.0
> context, and they used any of the extensions (properly) they will now
> indicate that this WebGL implementation can't run the code because of
> no float support whatsoever.
I think we already decided that applications will have to explicitly
request a WebGL 2 context by using a different context name.
>
> I can't currently consult the extension specification for
> EXT_color_buffer_float because khronos website is down. Does
> EXT_color_buffer_float cover texturing support, linear filtering
> support, renderability in a framebuffer support for both 16-bit and
> 32-bit?
It covers all of those except texturing which is standard in OpenGL ES
3.0 so is in the core specification.

Regards

    -Mark

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