[Webkit-unassigned] [Bug 285154] [GTK] Fails if OpenGL is unavailable

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=285154

--- Comment #2 from Balló György <ballogyor at gmail.com> ---
Created attachment 473681

  --> https://bugs.webkit.org/attachment.cgi?id=473681&action=review

Check if hardware acceleration is supported before trying to load EGL

The problem is that it tries to initialize EGL even if OpenGL support is missing.

- webkitgtk-6.0 2.45.6 or older versions work fine without OpenGL support.
- webkitgtk-6.0 2.45.90 works only if I specify the WEBKIT_DISABLE_DMABUF_RENDERER=1 environment variable.
- webkitgtk-6.0-2.45.91 and newer versions (including 2.47.2) don't work at all, regardless of the specified environment variables.

The attached patch fixes the problem.

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