Photoshop: Mixer Brush Tool merging layers

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  • Updated 5 years ago
  • Solved
  • (Edited)
Photoshop CS5 for Mac displays unexpected behaviors when the Mixer Brush Tool is selected. For some reason Photoshop tries to merge layers while an image is being opened, or when a layer visibility is turned on or off. Sometimes Photoshop will also crash.
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epgo

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Posted 9 years ago

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Brett N, Official Rep

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Could go into a little more detail here?

I created a document with 6 layers plus the background layer. I turned off the visibility of the middle layers (3 and 4). Close the file, switched to the Mixer Brush and reopened. Nothing happened.

Would like to be able to recreate the behavior if possible. Give us the exact step by step process please.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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What version of OS X are you using? What video card do you have? This may be part of the larger graphics driver issues with Lion and specific video cards.
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epgo

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OS X version 10.6.8, video card NVIDIA GeForce 8800 GT.

I already uninstalled and reinstalled Photoshop CS5 and the problem still exists.

With the Mixer Brush tool selected, I try to open a large image file (over 150 MB)
and Photoshop automatically tries to merge layers. Smaller images open OK.
But in any case, turning off a layer's visibility takes several seconds. Photoshop
seems to require excessive processing with the Mixer Brush selected. This may
just be an issue that is peculiar to my machine and I will just have to live with it.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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It sounds like it's file specific if I'm following your steps correctly. Can you post the file you're trying to paint on? Or can you make a video of your entire screen while this is happening?
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epgo

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I created a QuickTime movie of the glitch. How do I upload it?
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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I sent you a private email with with instructions on how to email it to me or post it.
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epgo

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I have found that the Mixer Brush-Merge Layers problem occurs when an image
file has more than four or five adjustment layers. The number of pixel layers in an image doesn't seem to matter. The problem doesn't occur when there are only
five or four or fewer adjustment layers. But, even then, there is still a long
response time for turning a layer visibility off or on. This was demonstrated in the
two QT movies i emailed to Jeff.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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I'm still investigating. I'm trying to build a document similar to yours that exhibits the behavior.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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I was able to make a document that does this. We'll take a look. Thanks.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Official Response
Fixed in CS6 or later.