Keith Packard authored Apr 03, 2014 and Emma Anholt committed Jun 15, 2014

This copies the stipple to a 8bpp pixmap and uses that to paint the
texture from.

v2: Create deep stipple pixmap without GLAMOR_CREATE_FBO_NO_FBO

v3: Fix stipple origin sign (matches tiles now). Track changes
    to original stipple with damage. This isn't required by the
    X spec, but java appears to depend on it, so we'll just do it.
    When Glamor switches to 8bpp bitmaps, we'll be able to render
    directly from them and not need this anymore.

v4: Review comments from Eric:

    * Remove stray whitespace change
    * Avoid "large" pixmap for stipple by using GLAMOR_CREATE_NO_LARGE
    * Wrap to 80 columns

v5: Don't crash when stipple damage tracker is destroyed

    The stipple damage tracker is automatically destroyed when the
    associated stipple pixmap is destroyed. When this happens, just
    clear the pointer from the GC rather than calling
    glamor_invalidate_stipple; that function would call
    DamageUnregister on the now invalid stipple damage pointer and
    crash.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>