Andreas Kling 7976ef7a79 LibGfx: Add Painter::blit_filtered() and blit_brightened() ...

blit_filtered() can be used to easily implement per-pixel filtered blit
functions. All you need to do is provide a callback that can compute
the Color for each pixel based on the original Color.

2020-03-30 19:39:37 +02:00

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