Author Topic: new layer mode  (Read 2387 times)

kevinb

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new layer mode
on: February 19, 2018, 05:18:24 PM
we need the blend mode for  layers found in photoshop.

Lucky Clan

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Re: new layer mode
Reply #1 on: February 20, 2018, 04:36:48 AM
Please write more details

Nighternet

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Re: new layer mode
Reply #2 on: February 21, 2018, 01:05:33 AM
All Photoshop blend modes are pretty much there. There are powerful modes, not the Photoshop ones: average, negation, contrast negate, reflect, glow. Average is the most useful.

Lucky Clan

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Re: new layer mode
Reply #3 on: February 21, 2018, 02:52:57 AM
Which app supports these modes?

GlennNorfolk

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Re: new layer mode
Reply #4 on: February 22, 2018, 03:38:49 AM
Which app supports these modes?
I think Nighternet might be referring to Affinity Photo

kevinb

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Re: new layer mode
Reply #5 on: February 22, 2018, 09:47:58 PM
when you click on the a layer in the layer pallet in photoshop a window comes up for various blending modes, the most interest of which  are the two sliders in the bottom half  of the window, one for the top  layer and one for the layer directly beneath. with these sliders you can replaces colors from the top layer replacing colors on the layer underneath.

GlennNorfolk

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Re: new layer mode
Reply #6 on: February 23, 2018, 03:02:42 AM
kevinb... I think it's just a question here of the terms used. Blend Modes (I'm sure you know) are how one layer interacts with the one beneath; the "modes" you refer to, I think, are actually the Blending Options controls in Photoshop's Layer Style Panel, affecting how much they interact.
As I say, seems like just a small confusion of terms here.

Lucky Clan

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Re: new layer mode
Reply #7 on: February 23, 2018, 03:04:09 AM
Ok, i know these advanced settings in Photoshop.
I will consider implementing that in the future, it is not the most urgent feature now.

Nighternet

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Re: new layer mode
Reply #8 on: February 23, 2018, 04:11:00 AM
Much more important would be the ability to merge layers with different blend modes and not 100% opacity, so the result matches exactly what you see. Merging them to a 100% normal yields a completely different result. Currently for this one has to add a bottom copy of the background with "normal" 100% and masked to the merging layers alpha (simply merging with the background is not an option, since you'd loose alpha). Simply duplicating the background layer and clipping mask it doesn't work, because upper layer can't clip one below.

Lucky Clan

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Re: new layer mode
Reply #9 on: February 23, 2018, 05:11:22 AM
Please send me a test document with layers to merge and i will check this.

Nighternet

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Re: new layer mode
Reply #10 on: February 24, 2018, 10:23:42 PM
Sorry, can't attach the layered ASP file here. Here is a side-by-side of what happens when you merge. Top layers were "hard light" and "add". Even having an empty "normal" at the bottom didn't make any difference (in Photoshop it does). You can certainly try it yourself.

Lucky Clan

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Re: new layer mode
Reply #11 on: February 25, 2018, 03:05:01 AM
I really need .artstudio document to check what is going on.
You can send me it be email, you can decrease image size if file is too big.

Nighternet

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Re: new layer mode
Reply #12 on: February 26, 2018, 02:17:27 AM
Emailed the ASP file. Try to merge top layer to the one below.

Lucky Clan

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Re: new layer mode
Reply #13 on: February 26, 2018, 02:50:58 AM
If one of the merged layers uses blending different than "Normal", the result image will be different after merging.
Here is explanation of this.
When all merged layer use Normal blending, it is like "Adding" in math - we can make operation in any order:
A + B + C + D = A + (B + C) + D = A + (B + C + D)

Now let's assume one of the merged layers (C in example below) use "Multiply" or any other not-normal blending
before merging: (A + B) * C
after merging: A + merge(B, C) = A + (B * C)
(A + B) * C   !=   A + (B * C)

As you can see result is different.

Nighternet

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Re: new layer mode
Reply #14 on: February 26, 2018, 04:04:18 AM
I wish I could get satisfied by the math of it, but the reason people merge the layers is to reduce the total number of layers and conserve the memory once the desired look is achieved. Of course all normal layers would merge safely, but what's the point of having other types of blending? BTW, in Photoshop this can be done.