Add blend modes and blend groups for compositing - #31162

Merged

story645 merged 10 commits into

matplotlib:mainfrom

ayshih:agg_compositing

Aug 27, 2026

Commits on Aug 26, 2026

Add support for specifying the blend mode for an artist
ayshih
committed
5ad8cab
Add Agg code for computing HSL blend modes
ayshih
committed
9199535
Add support for blend modes in non-PS backends
ayshih
committed
aebc329
Fix precision loss with Agg compositing
ayshih
committed
2ccbbd3
Add support for Gouraud shading in Cairo-based backends
ayshih
committed
22091f7
Fix ability to specify scalar alpha to Agg draw_image
ayshih
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7301134
Add support for blend groups (aka transparency groups)
ayshih
committed
ced4c64
Add documentation pages and whatsnew entry
ayshih
committed
fcef182
Fix Agg rendering of Gouraud shading
ayshih
committed
8c0fee9
Add image tests for blend modes and blend groups
ayshih
committed
a848ba4