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This makes sure the pixelization for dashed lines matches non-dashed lines, while also speeding them up. v2: Switch to glamor_make_current v3: Create dash pattern pixmap without GLAMOR_CREATE_FBO_NO_FBO v4: Adopt suggestions from Eric's review: - Drops power-of-two alignment of our line vertex data, simplifying the code. - Stops reading from the VBO. While on keithp's and my machines the VBO is mapped cached, on many implementations it will be mapped WC, making those reads extremely expensive. - Style fixes (line wrapping, spaces around operators). v5: Adopt suggestions from Markus' review: - Use max when computing zero-width dashed line length. Don't open code max here. - Embed CoordModePrevious into VBO writing for dashed lines Instead of pre-computing the coord mode previous results, just embed this in the loop which fills the vertex buffer. Saves re-writing the request buffer, and shortens the code a bit v6: Export glamor_destroy_gc for UXA UXA needs to call glamor_destroy_gc from its GCFuncs, so export it. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Eric Anholt <eric@anholt.net>
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