Tips and Tutorials


Hazards to Avoid when Painting on Transparent Areas
of a Layer Using Brush Variants that Have
Blending and Smearing Characteristics

So you'll understand how to tell if a brush variant has blending and smearing characteristics:
  • Resaturaton (Resat) controls how much paint is in the brush stroke.

  • Bleed controls how much existing color is picked up and painted in the brush stroke, along with the current color.
Brush variants that have Resaturation set low and Bleed set high, can be used to paint and blend or used to just blend.

Blending on transparent areas of a Layer is going to present problems no matter what you might do to prevent them. By Blending, I mean painting with any brush variant that has blending and smearing characteristics, not just the obvious Blenders' variants.

Here's a little demo to show you what these hazards can be:

As you can see, there are three pot holes along the road that you might run into when painting or blending on transparent areas of a Layer with brush variants that have blending and smearing characteristics:
  • White when painting or blending on transparent areas of the Layer.

  • Wrong color when the Pick Up Underlying Colors box is checked while painting or blending and, later, other color is added below the blending Layer.

  • Black when painting or blending with either the Preserve Transparency Box checked or a selecton based on Layer transparency active.
Taking enough time to plan ahead can help to avoid these difficulties and sometimes, it's best to do this kind of painting and blending:
  • After you're sure no painting or blending will accidentally slop over onto transparent areas of a Layer because here's enough color surrounding the areas you'll be blending,

  • When you're sure it's safe to check the Pick Up Underlying Colors box because there will never be different colors added below the Layer where you're painting or blending, or...

  • After multiple Layers are Grouped and Collapsed to a single Layer leaving no transparent areas on that Layer, the image is flattened to the Canvas, or you've made a Clone to work on while fine tuning the image (i.e. painting, blending, cleaning up details, etc.).
Usually, there's a way to work around what seem like immovable roadblocks.

Additional Notes:
  • You'll need both the Preserve Transparency box unchecked and the Pick Up Underlying Color box checked if you want to blend colors on a Layer with colors on underlying Layers and/or the Canvas. (Be sure to read the following bug info.)

  • In Painter X and X.1 (and maybe also in Painter IX, IX 9.1 and IX.5 though I don't recall for sure) there's a bug related to the Preserve Transparency box:

    Sometimes it appears Preserve Transparency is not enabled because there's no check in the check box. Even so, we are not able to paint on transparent areas of the Layer.

    The solution is to click the Preserve Transparency box until a check appears, then click once more to disable Preserve Transparency.

Happy Planning! 

© 2005 - 2007, Jinny Brown

originally published in a forum on December 8, 2005 and December 9, 2005
This version edited a bit and published on September 4, 2007