NormalMap-Generator, LUT-Workflow in Amplify-Color, (better) direct PSD-Workflow with Unity, etc. Maybe you or someone else can bring some light to this questionīTW: It seems that Photoshop helps you in some more cases for Game Development. Sorry for that questions, but I still don't understand why so many people says I should use Photoshop instead of a competitor because of the alpha-channel. But why? Isn't it the same as you would use the select tools?Īnd is the alpha-channel/parts in a transparent PNG something else like the one in TARGA? It's an integral part of Photoshop empowerment.Īnd it has become an expected workflow provider, because it allows wonderfully nuanced mask creation and editing, locking to imagery, layer effects control, noise creation/fixing per layer, alpha per layer to be incorporated and instantly selectable, etc.Ĭlick to expand.Next stupid question: In what cases do you need this technique? I saw a lot of videos people uses alpha-layer to select parts of an image. Largely because it's been incorporated since near the beginning, like this, it's fundamental to how one thinks about layers, masking (and channels) in Photoshop, when editing masks.Īs you grow in your ability to manipulate imagery in Photoshop, you're also growing in your ability to edit masks. So you can either feather a mask with the mask feathering, or turn on the alpha channel and look at it in greyscale, and directly add filters to the image you're seeing to soften and adjust it as a mask. So you can paint a mask, or refine it with brush stroke edits, or articulate it via a smart object (vector), etc.Īnd they can be saved in isolation, stored for reloading etc, as selections/masks. This means the alpha channel is just another channel, just another greyscale, greytone image, and is treated as such by Photoshop, permitting all tool, editing and creation operations to be performed on it, just as they can be on a mixed image, or the other colour channels. So I'll try explain its core-ness.Īny layer = Channels = Red, Green, Blue and AlphaĮach channel is an image, expressed in greytone, thanks to it's range, in either 8bit or 16bit greyscale.Ī layer's appearance is the blend of its RGB (and invisibly), the Alpha channel. I doubt a single video is going to do justice to the integration of alpha in layers. Why are you fixating on the alpha channel of Photoshop? Other than the Pencil icon, there's no way to tell in AF. In Photoshop, it's obvious when you're editing the alpha channel as the color palette turns to grayscale. It just makes the corresponding alpha channel white no matter what the current foreground color is. But when I draw with the Paint Brush, for example, it draws in the RGB channels. You can see from the screen capture, I have the Composite Alpha channel editable and the others not editable (the Pencil icon). Coming from Photoshop, it seems simple and obvious. I've tried what you showed in your screen capture (see the attached image) MANY times. I don't mean to hijack this thread, but I too am confused. When I first started using AF, I didn't realize that layers had to be rasterized before you can edit them, so maybe there's some step required for alpha channels that I'm not doing. I'm not really sure, as I've not yet gotten it to work.Ĭlick to expand.I don't mean to hijack this thread, but I too am confused. You have to convert the alpha channel, then edit it, then convert it back. The Pencil icon (makes a channel editable) has no effect on the alpha channel. In PS, I can edit the alpha channel as if it were a grayscale layer, for example, paint or fill with any gray level, do effects like blur, anything I can do in any other layer. In Affinity Photo, you can fill an alpha channel from a selection or mask, but you can't actually edit it. It's just a toggle that turns on and off viewing the unfilled background of an image. In Affinity Photo, Transparent Background doesn't actually add an alpha channel. It's saved as its own channel in a TIFF file. A grayscale alpha channel determines the image's level transparency. I sometimes also need transparency in 3D textures. For example, a UI button with rounded corners, or a button with a drop shadow or glow. Click to expand.I'm using the alpha channel for transparency.
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