Hi, I am working on improving WebGL texture uploading performance. At the moment, for each texture loaded from HTMLImageElement, images are always decoded twice: the first pass is regular decoding, the second pass is for WebGL only. The reason is that for WebGL, we sometimes want the raw RGBA data without applying gamma and color profile, and without premultiplying alpha.
I am wondering if there is any way we can avoid decoding twice. In many cases, the HTMLImageElement used as WebGL texture won't be displayed, so we don't need the first pass regular decoding. The problem is that HTMLImageElement does not know how it is going to be used. So we can not just pass in some parameter and let the first pass decoding behave like we desire. So my question is, is it possible to let HTMLImageElement'd image decoding to be on-demand? Say, only decode it once it's rendered or used by WebGL? Please advise. Mo _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
