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Posted

By accident I added 1% noise to both nodes of gradient.

when I remove the noise, the rendering became more noisy (due to forced dithering).

it is strange that a gradient with 1% noise (right side, gradient tool active) looks cleaner than a gradient with 0% noise (left).

When rasterizing issue persists.

second issue: dithering and/or noise depends on direction of gradient (radial with either black or white in center).

the outer triangles are copies with just gradient nodes swapped/inverted in gradient tool

Note: I added a postirize adjustment to make this more visible. Issue can be observed even without, but requires higher zoom level.

 

IMG_0011.png

IMG_0012.png

noise inconsistency.afphoto

Mac mini M1 A2348 | MBP M3 

Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.

 

Posted

And does anyone know why in some documents the reverse gradient button refuses to work?
 

Mac mini M1 A2348 | MBP M3 

Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.

 

  • Staff
Posted

Hi @NotMyFault,

I've logged the noise inconsistency with the developers.

On 5/4/2025 at 6:48 PM, NotMyFault said:

second issue: dithering and/or noise depends on direction of gradient (radial with either black or white in center).

the outer triangles are copies with just gradient nodes swapped/inverted in gradient tool

Not sure I follow, isn't this because the outer triangle's objects have been rotated, so the direction has therefore changed?

On 5/4/2025 at 7:01 PM, NotMyFault said:

And does anyone know why in some documents the reverse gradient button refuses to work?

Looks like a file-specific bug on iPad, on desktop this works fine on your document. This has been historically logged once previously as a user file issue on iPad, but I'm not sure what the trigger is. I'll log this and link it back to the original issue.

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