GIMP brush size can't be size 2 or size 4

cn flag

This is driving me crazy...

I can select a brush size of 1 pixel, and it's fine. I can select a brush size of 3 or 5 pixels, also fine.

But when I set the size to 2 or to 4 pixels, GIMP will use a brush size of 3 instead???

enter image description here

om flag

Depends which brush you use. The 1. Pixel wants to be 3 pixels, but the Pixel (1x1 square) works for 2px:

enter image description here

Theses two brushes are "parametric" brushes (their outline is defined a bit like a path). You can also define a bitmap brush:

  • Create a 2x2 image
  • Fill with black
  • Either:
    • Export as .GBR in one of your brushes directories, and select it in the brush list
    • Copy to clipboard, and use the Clipboard mask brush (the Clipboard mask brush assumes the Foreground color, the Clipboard image brush keeps the color it was created with)
Bram avatar
cn flag
Thank you. Somehow, it is a lot harder to draw with that brush thuogh. E.g. holding SHIFT for straight lines often still makes lines that are not fully straight. It also often misses pixels.
xenoid avatar
om flag
Yes, because its center is not centered on a pixel but between pixels. You can use a non-parametric brush, see augmented answer.
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