[Public WebGL] proposal draft for EXT_texture_filter_anisotropic

Kenneth Russell [email protected]
Thu Feb 23 18:16:14 PST 2012

The extension should be in "draft" state, not "proposed" state, before
anyone implements it. See the very clear "DO NOT IMPLEMENT!" at the
top of https://cvs.khronos.org/svn/repos/registry/trunk/public/webgl/extensions/proposals/EXT_texture_filter_anisotropic/index.html

Are there any objections to moving this WebGL extension into draft
state? I don't suspect there would be...

No objections to incorporating a conformance test for it as long as it
passes without the extension being available and is prefixed with a
minimum version of 1.0.2.


On Thu, Feb 23, 2012 at 6:03 AM, Florian Bösch <[email protected]> wrote:
> A patch to introduce this extension has been accepted by Mozilla to
> mozilla-inbound: https://bugzilla.mozilla.org/show_bug.cgi?id=728354
> - The extension name MOZ_EXT_texture_filter_anisotropic is used by firefox.
> - A conformance test has been added for this
> feature: http://hg.mozilla.org/integration/mozilla-inbound/diff/a6dfdf5a529d/content/canvas/test/webgl/ext-texture-filter-anisotropic.patch
> - Is it possible to accept this conformance test upstream to the Khronos
> conformance test suite?
> - A demo for anisotropic filtering is available
> at: http://codeflow.org/webgl/anisotropy/
> - Sample picture of the demo: http://codeflow.org/pictures/anisotropy.jpg
> Example Code:
> var ext = gl.getExtension('MOZ_EXT_texture_filter_anisotropic');
> if(ext){
>     var max = gl.getParameter(ext.MAX_TEXTURE_MAX_ANISOTROPY);
>     gl.texParameterf(target, ext.TEXTURE_MAX_ANISOTROPY, max);
> }
> Angle OpenGL works fine, but Direct3D support is not yet there for this
> feature, requirement described
> there: http://code.google.com/p/angleproject/issues/detail?id=297

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