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blending modes grayed out — krita 3.1.1 in osx 10.11.6

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spinach
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tried changing the blend mode in a paint layer and most of them are grayed out! is there some unsatisfied dependency i can add, or a script to open krita with that will fix this? i'm totally in the dark here.
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halla
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What is the color model and channel depth of you image? And are you sure the layer isn't locked?
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spinach
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tried lab and cmyk, 8- and 16-bit. fresh layer, never locked. a few blend modes are available but most are not.
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TheraHedwig
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spinach wrote:tried lab and cmyk, 8- and 16-bit. fresh layer, never locked. a few blend modes are available but most are not.

Yes, because those specific blending modes you are looking at are for RGB only. If they work in photoshop, that's because photoshop converts your image to RGB before applying these blending modes. We don't believe in doing conversions like this secretly from our users, as this can be disasterous for controlled color managed workflows. I recommend that if you wish to use these blending modes, you instead work in RGB and merge and convert when doing the last bits in CMYK and LAB.
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kamathraghavendra
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tried lab and cmyk, 8- and 16-bit. fresh layer, never locked. a few blend modes are available but most are not.


not all blend modes work in some color profiles for example cmyk.
Also one thing to note is that in CMyk the blend modes behave differently ( you can say opposite of what they are name for eg. screen becomes multiply etc)


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spinach
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TheraHedwig wrote:
spinach wrote:If they work in photoshop, that's because photoshop converts your image to RGB before applying these blending modes.

i've never worked with blend modes in any software and have never used photoshop for much of anything. i poured through documentation before posting this thread and there wasn't a word about blend modes being limited to certain colorspaces*, it'd help to include that info. even better would be a tooltip communicating as much. i'll try this.

*my base layer was grayscale, so colorspace conversion was pretty much required to color at all.


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