[PATCH xserver] glamor: Fix dashed line rendering.

[Keith Packard]

Eric Anholt <eric at anholt.net> writes:

> We were binding the screen pixmap as the dash and sampling its alpha,
> which is usually just 1.0 (no dashing at all).
>
> Please cherry-pick this to active stable branches.
>
> Signed-off-by: Eric Anholt <eric at anholt.net>

Thank you for finding this!

Reviewed-by: Keith Packard <keithp at keithp.com>

Now, can you explain why it ever did anything reasonable at all?

-- 
-keith
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