[PATCH 05/13] glamor: Add glamor_program based 0-width dashed lines

[Keith Packard]

Keith Packard <keithp at keithp.com> writes:

> This makes sure the pixelization for dashed lines matches non-dashed
> lines, while also speeding them up.

This patch adds glamor_destroy_gc and requires that it be called to
avoid leaking the dash pixmap.

Unfortunately, UXA doesn't use glamor_gc_funcs, preferring to have its
own GCFuncs structure. That, of course, doesn't (currently) call
glamor_destroy_gc.

Here's an ugly kludge which checks to see if the GC will be using
glamor_destroy_gc, by testing inside of glamor_validate_gc, stashing the
current GC funcs in a local static and replacing the DestroyGC entry
with glamor_destroy_gc. This is very much UXA-specific, and only
necessary until UXA calls glamor_destroy_gc instead of miDestroyGC.

Thoughts about how to simply force UXA to be built correctly are
welcome; that would presumably be a better plan than this ugly hack.

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-- 
keith.packard at intel.com
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