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I have a PNG with some transparency.
In PhotoPaint I have a tool "transparency brush" where I simply choose 100% opacity and the transparency is removed.
In Photoshop the eraser tool only gives me more transparency on this already transparent zone.
I know I can duplicate the layer a dozen times to remove the transparency, but I am wondering if such a tool exists on Photoshop.
Edited some time later. My own answer provides a workaround using the original transparency as a mask.
The short answer is not really.
The only way that I know of to retrieve pixels that are transparent is to duplicate the layer and merge it again and again.
Then you can make a layer mask and paint the transparency just like you like it. Here's a great answer on how to work with layer masks
I found a really easy way to do this.
You will get now four different windows: R,G, B and A.
Now click again the menu and chose Combine Channels.
Choose RGB as the combination mode.
Confirm that each channel is in the right position.
You now have a "transparency free" RGB file with an additional file with the original transparency to be used as a layer mask.
This layer mask can be used to paint on and work as my original question was asking.
To add the mask.
Select the grayscale image (Ctrl+A) and copy it to the clipboard.
On the color image on the layer's dialog box, click the "Add Mask"
(Alt+Click) on the mask, and paste the Clipboard.
No, but there are layer masks, which is what you will need to use for non-destructive deleting.
In Photoshop, add a layer mask to the layer you wish to erase. In the layers panel click on the layer mask to select it. Choose the Paint Brush tool, Press D to choose the default black and white foreground and background colours. Paint on the image in Black to add transparency, paint on the image in white to return to opaque. You can switch between black and white foreground colours by hitting the X key. If you change the brush opacity to less than 100% you can reduce the amount of black or white you apply to the mask, with each stroke.
