The EraserBrush makes pixels darker afterwhile

[aalex]

• draw something
• eraser it with the eraser brush
• draw on top of it
• it should have the same look as the other strokes, but the ones over an erased area are darker

[aalex]

We use the P3D renderer: (for the PointShaderBrush) createGraphics(width, height, P3D);

But then the eraser modifies the pixels directly: buffer.pixels[loc] = c;

What if we don't use the PointShaderBrush and use the default renderer instead?

[aalex]

So, in commit c9c93a8a3d465c51f09008a3a71dd5512d7e8a59 I disabled the P3D renderer for the spray cans.

• Ok: We still have alpha in the Syphon texture.
• Note: we no longer have the PointShaderBrush.
• Todo: We need to test whether it's significantly slower or not.