[cairo] Motion blur with cairo, alpha add compositing operator

[Nikita Zlobin]

Group draw, followed by paint_with_alpha should do this trick.

ср, 8 июн. 2022 г. в 12:17, Plugin Everything <jameswhiffin at gmail.com>:

> Hello all
>
>
> Apologies if this has been discussed before. I’d like to create the
> appearance of motion blur by drawing multiple Cairo shapes at opacity of
> 1.0 / [number of motion blur samples]. In openGL or After Effects I would
> set the blending to alpha add so that the final result retains its original
> opacity. Is this possible in Cairo? I couldn’t find an equivalent
> compositing operator. Keen to hear any workarounds or suggestions.
>
>
> Regards,
>
>
>
> *James Whiffin* | *Developer*
> www.plugineverything.com
>
>
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