Commit 32dd62b8976b5a93e6ddc631b3cfb55fbb208032
2016-09-23T14:09:06
Allow LINEAR filtering on OES_depth_texture formats. The ES3 spec and this extension lead to some awkward interactions. The extension doesn't mention allowed filtering modes, so be default it allows both linear and nearest. ES3 however, very clearly restricts any depth texture (any texture with effective internal format which has depth or stencil bits) to only use nearest filtering. This then breaks compatibility with the legazy unsized formats. Choose to be slightly non-conformant here, and allow linear filtering for the older unsized formats. Although this could lead to problems down the line, it is consistent with existing ES drivers in practice. Other future options might be to override the behaviour of the filter to use nearest when using WebGL validation compatibility. BUG=chromium:649200 Change-Id: I4ee7608dd04d1fd238385aefee32c8c9c1e80ca0 Reviewed-on: https://chromium-review.googlesource.com/388759 Reviewed-by: Zhenyao Mo <zmo@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>