[Webkit-unassigned] [Bug 164049] [GTK] Dramatic increase on memory usage since 2.14.x

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=164049

Miguel Gomez <magomez at igalia.com> changed:

           What    |Removed                     |Added
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                 CC|                            |magomez at igalia.com

--- Comment #2 from Miguel Gomez <magomez at igalia.com> ---
As we enabled the Threaded Compositor by default, we are intensively using OpenGL for rendering and this has triggered the problem. We found that the extra memory consumption comes from the Intel Mesa driver, which is using the sofware rasterizer to perform OpenGL operations.

In order to fix this we need to change the way we create the OpenGL contexts: we need to request a concrete version where the Intel driver doesn't use the software rasterizer (3.2 core profile), and then we need to update the OpenGL operations to be coherent with that OpenGL version.

I'll attach a patch that changes the context creation, requesting a OpenGL 3.2 Core version, and fixes some gl operations when we are using that version. It also tweaks the ANGLE shader translator to output the appropriate code for the version (GLSL 1.50).

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