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Make the GLFW embedder example work on Linux#34156
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bdero merged 7 commits intoflutter:mainfrom Jun 24, 2022
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It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie on the #hackers channel in Chat (don't just cc him here, he won't see it! He's on Discord!). If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix? Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. |
chinmaygarde
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betrevisan
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LGTM. Thank you for fixing this issue!
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Fixes flutter/flutter#106221.
This patch makes GLFW use EGL instead of GLX on Linux, matching the Linux embedder's behavior.
Skia always attempts to use
eglGetCurrentDisplayto fetch the egl display and theneglQueryStringto fetch the extension list. However, when GLFW creates a GLX context, both of these procs exhibit non-standard behavior and return invalid, non-error, non-null values causing a crash when the extension list is dereferenced.The preprocessor guard is necessary because the EGL context can't be used on MacOS.