Eraser shape

[digital_oatmeal]

Adding on to this thread, is it possible to get a plugin that uses presaved images as erasers? I'm trying to mimic grass texture after I render a block of grass, but it's a bit annoying to drag around the png I'm currently using as an eraser and replicate it a couple dozen times just to get the right look.

 

Grass:

My "eraser":

I duplicate the image on several layers, then use the magic wand (shift+click) to select all the black:

Finally, I delete it from the grass layer:

Although it does the job, it takes ridiculously long and the result isn't great...any tips?

 

[Red ochre]

If you use my Selection2 clear plugin it would save having to reselect your "eraser" shape each time. In my pack - link in Sig below.
Unfortunately deleting selections tends to leave a 'pixelated' edge, so I avoid it when possible.
Personally I would use the Furblur plugin to soften the edge of the grass but you could also explore using the Brush factory plugin. (You can easily create your own grass brush)

[Ego Eram Reputo]

@digital_oatmeal I've split your question out of the thread you posted in. @Red ochre's reply also made the cut

[TrevorOutlaw]

@digital_oatmeal

 

The techniques described in this tutorial will help you even though it is a roundabout way until a custom brush engine is finally bundled with a future version of PDN.