Author Topic: Mask painting leaves pixelated area of colour bleed  (Read 1785 times)

Hi, I have sent a bug report by email, but after thought I should post here too in case anyone has already come across this and can give advice.

I have noticed and been able to reproduce an unwanted effect when painting on a mask.

Here's an example (.jpeg attached) There are two layers:
Bottom fill layer (Green)
Top fill layer (Dark Red)  with black mask

When I paint on the mask to reveal the top layer (dark red) , near to the edge of the mask brush stroke area you can see pixelated areas of the colour of the dark red texture coming through onto on the green layer  - so there is no clean dilineation between the masked and unmasked textures.

As I said, I've been able to reproduce this and the attached .jpeg example was using default SP materials. I've also seen it with custom materials.

- The texture was exported in this example as .png but I've also seen it on .psd file converted to .jpeg. Textures were exported at 2K.

- I also checked the mask brush settings - pure white, hardness 1, no jitter (and I've tried gaussian and disc brushes) 

- Using trial version 2.0.4

- The problem does not show up in SP viewport but shows clearly in Daz Studio, which has an Iray renderer. I have seen faint traces of it looking in Solo mode in SP and in photoshop, it's barely visible though. So even if I was to paint over these areas new problem areas would appear because it's always near the edge of the brush stroke. It probably wouldn't be noticeable if rendering the object at a distance, but is no good for close up work.

It's very annoying. Is there a solution? Might be a deal breaker to buying SP.
Last Edit: May 18, 2016, 12:18:05 pm

- The texture was exported in this example as .png but I've also seen it on .psd file converted to .jpeg. Textures were exported at 2K.


- The problem does not show up in SP viewport but shows clearly in Daz Studio, which has an Iray renderer. I have seen faint traces of it looking in Solo mode in SP and in photoshop, it's barely visible though. So even if I was to paint over these areas new problem areas would appear because it's always near the edge of the brush stroke. It probably wouldn't be noticeable if rendering the object at a distance, but is no good for close up work.


It looks like a compression issue with the Jpeg file format to me.
How does it work in Iray if you use an other file format instead ? Like TGA ?
Don't forget your log file. It can be exported from the Help menu of the software.
-----------
Fabrice Piquet aka Froyok. Product Manager, Technical Artist and Documentation at Adobe.