Omar Emara eaa0ae23a9 Fix: Lighten blend mode is wrong for factors less than 1
The Lighten blend mode is wrong for factors less than 1, as it is
computed as a weighted maximum using the factor as the weight, while it
should be a simple component-wise maximum.

This is correctly implemented for Compositor, EEVEE, and Cycles. But the
render/material implementation is wrong. So we adjust the implementation
to match the correct one.

The Darken counterpart was already fixed in 1dcf956849. While the
lighten was fixed in 8b7b165ad9 among other patches. This just completes
the fix.

Pull Request: https://projects.blender.org/blender/blender/pulls/131242
2024-12-02 17:12:08 +01:00
2024-11-14 18:07:16 +01:00
2023-12-08 13:28:13 +11:00

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