Unable to merge correctly a live lightning filter with option Texture set to values higher 5px

[oliver_fuchs]

Hi,

setting a live filter "^Live Lighting" on an image, choosing option Texture with a high or low value (not in the range of -5 to 5px) - then the following operations will fail or lead to a wrong result: merge (within the live layer merge/delete/reset), rasterize or merge visible, export the composition as a file (for example as a jpg)!

Here is my setup:

operating system Windows 11 Home, Version 21H2, hardware acceleration ist turned off because it does not work anymore with GeForce GTX 1050 and latest driver NVIDIA studio 512.15, Affinity Foto  Version  1.10.5 1342

 

Thanx in advance

 

Oliver

[NotMyFault]

Hi Oliver and welcome to the forum.

Sorry to hear about this issue. 

could you explain what is wrong, maybe upload a test image and screenshots?
Did you choose and load a texture image? Please upload the file, too.

There was a bug when trying to use tiff files as texture, leading to immediate crash. If using a tiff, convert to png and try again.

If you inspect the effect, you need to look at 200% or 400% zoom level to see an accurate preview of the effect. Other zoom levels could give misleading results.

If your image contains transparent parts, merging will change the result as half transparent layers will blend. To avoid, add a fill layer in white below the top merged layer.

 

[oliver_fuchs]

HI,

yes the problem is related to the one foto below ... sorry for the nudity ... affinity_lighting_test.jpg is the original jpg ... before_merge.jpg shows the screenshot of using the lighting filter ... and after_merge.jpg shows the result after I merged the filter or tried to do "merge visible" or export it as an jpg ... but to be honest I only can reproduce this error while using the affinity_lighting_test.jpg so I think it was my mistake to report it as a bug because nowhere else I could find this error! Even if I make a screenshot of the original file and put then the lighting filter on it everything works fine! So maybe it has to to do with the file format ... sorry for that!!!

But thanks for the fast reply

 

Greetings

 

Oliver

[NotMyFault]

Assuming your display is smaller than the almost 7000px high image, you are using a zoom level of about 50%. This zoom level gives misleading (vulgo wrong) results. Please activate the navigator panel, it always shows the current level.

You need to zoom in to 100 / 200 / 400 % to get a realistic preview of certain filters like lighting with bump map, noise, sharpen.

The required zoom level depends on view quality settings in edit>preferences>perfomance. 

 

[oliver_fuchs]

Hi,

 

a big AHHHHHHH felt from the sky ... now I understand ... the zoomlevel was wrong so I got a wrong impression of what the lighting filter will do! OMG ... how did you figured this one out ... thank you very much!. So the only way to get the "wrong" but better looking lighting filter view would be ALT-Print screen and then command "New from clipboard" ... OK ... thanks again ... so no error just another uninformed user!!!!!

 

Oliver

[NotMyFault]

Well i stumbled over this unexpected behavior similar to you. 
it is the compromise Affinity had to take when focussing on (almost) real time preview of filters: getting misleading preview in certain cases.

I miss a dependable preview, you may add you vote to the feature request