Jonas Ådahl eac18647c3 cogl/texture: Add API to check whether _get_data() will work
Currently, GL_TEXTURE_EXTERNAL_OES textures doesn't support getting pixel data.
Make it possible for texture users to know this.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/362
2019-01-03 10:26:13 +00:00
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