Option "Alpha Only" for all Filters / Adjustments

[NotMyFault]

Hi,

 

it would be really great if the option "Preserve Alpha" would be accompanied by "Only Alpha":

E.g. a live blur filter that only affects alpha channel instead of RGB channels.

This option would really simplify many non-destructive workflows and eliminate lots of (destructive) workarounds.

 

More general: i would like to have the option to select which channel gets impacted by filters or adjustments.

Currently, only 3 adjustments offer this option (curves, levels, channel mixer).

 

[loukash]

21 minutes ago, NotMyFault said:

This option would really simplify many non-destructive workflows

Hm… 3 clicks in the Layers panel and 2 keyboard shortcuts:

But yeah, why not, it could be an interesting option.

[kirk23]

I'd love it.   So I could use inner glow fx , not blur  btw,    like an  edge feather in Xara.     It's possible to do in mask stack now but would be so much simpler  and easier.  End the layer stack would look so much simpler and elegant

[NotMyFault]

On 5/2/2021 at 7:58 PM, loukash said:

Hm… 3 clicks in the Layers panel and 2 keyboard shortcuts:

But yeah, why not, it could be an interesting option.

Copying a layer breaks non-destructive/ live workflows.

I could use destructive blur, and use channels panels to select only affect alpha. But this would be an even simpler destructive workflow. But sometimes i need both the underlying pixel layers and the blur layer to be live layers. Having everything as live filter is the best of all features of Photo. Not having this for alpha channels only is a panful omission. 

[NotMyFault]

I found a magic trick / workaround - maybe a bug - providing this functionality indirectly.

Never the less, it would be great getting there through the front door of an official functionality, as using groups could lead to other collateral damage.

 

 

[KarlonCromwell]

On 5/2/2021 at 1:32 PM, NotMyFault said:

Hi,

 

it would be really great if the option "Preserve Alpha" would be accompanied by "Only Alpha":

E.g. a live blur filter that only affects alpha channel instead of RGB channels.

This option would really simplify many non-destructive workflows and eliminate lots of (destructive) workarounds.

 

More general: i would like to have the option to select which channel gets impacted by filters or adjustments.

Currently, only 3 adjustments offer this option (curves, levels, channel mixer).

 

Will look into this a bit more when I start to do some editing in affinity.

[NotMyFault]

Bump - needed more than ever