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Orama-Interactive / Pixelorama

Unleash your creativity with Pixelorama, a powerful and accessible open-source pixel art multitool. Whether you want to create sprites, tiles, animations, or just express yourself in the language of pixel art, this software will realize your pixel-perfect dreams with a vast toolbox of features. Available on Windows, Linux, macOS and the Web!
https://orama-interactive.itch.io/pixelorama
MIT License
7.26k stars 390 forks source link

Add alpha erase blend mode #1117

Closed Variable-ind closed 1 month ago

Variable-ind commented 1 month ago

Works same as the Erase mode in https://docs.gimp.org/en/gimp-concepts-layer-modes.html (Figure 8.12. Example for layer mode “Erase”)

An "Erase" layer blend mode or effect would easily skip a step of manual labor when, for example, making opaque shapes with transparent icons within.

https://github.com/user-attachments/assets/559387a8-4133-47b9-8e1b-95c01601009c

https://github.com/user-attachments/assets/2817253f-fdb3-4a88-ab59-797885acf717

OverloadedOrama commented 1 month ago

Looks good! If we want to be consistent with other software though, I think we should keep the name "Subtract" as it is, and the new mode should be called "Erase", as they are not quite the same. Erase should also be together with Normal, as its not considered an Inversion type of blend mode. In the documentation you linked it is listed under the Normal layer modes group, while Subtract is listed under the Inversion layer modes https://docs.gimp.org/en/layer-mode-group-inversion.html

Variable-ind commented 1 month ago

Done