Cleaned up some evas_gl code and added surface cap feature.
Previously, evas_gl_surface_create() didn't actually do
the render buffer attach to the the FBO. It was performed when
the make_current was called for the first time. The issue
was that even though the surface was successfully created with
the given configuration, there was a possibility of make_current
failing with the error message "FBO not complete" because of
the surface configuration.
So, I've added a piece of code that checks the FBO
capabilities beforehand to set up a available surface configurations
so that it doesn't have to fail during make_current for unsupported
surface format.
Also, I've changed the surface config in a way that once the
user calls evas_gl_surface_create(), evas gl sets the config
parameter with configuration that evas_gl is actually using.
git-svn-id: http://svn.enlightenment.org/svn/e/trunk/evas@70617
7cbeb6ba-43b4-40fd-8cce-
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