[webkit-dev] Proposal: Remove TextureMapperImageBuffer

Martin Robinson mrobinson at webkit.org
Thu Apr 23 12:10:44 PDT 2015

A slight update on this issue. It's already been attempted here:

The issue is that WebKitEFL is using the TextureMapperImageBuffer to
run tests on their bots, because the EFL bots don't support OpenGL
tests. My suggestion is that we disable accelerated compositing
completely for WebKitEFL (if possible) and skip those tests. Once the
bots have the ability to run tests that use OpenGL, we can re-enable
that code path for WebKitEFL.


On Thu, Apr 23, 2015 at 11:12 AM, Martin Robinson <mrobinson at webkit.org> wrote:
> Background: There currently exists a fallback TextureMapper
> implementation that does not use OpenGL to composite and project
> layers, but instead relies on 2D rasterization. This does not work
> correctly for Cairo, since Cairo only supports affine transformations.
> I believe this path is only used by GTK+ (and perhaps WinCairo) now.
> Proposal: I would like to remove TextureMapperImageBuffer and make
> TextureMapperGL the only implementation of TextureMapper. Not only
> will this simplify the code, it will remove a build flag
> (TEXTURE_MAPPER_GL). The current path isn't (or really shouldn't) be
> enabled by default.
> Please speak up if you are opposed. :)
> --Martin

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