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Posted

Photo renders images with Unsharp Mask filter differently when using Hardware Acceleration. Please see the screenshots below. Notice how the edges of the treeline are sharper/more aliased when using Hardware Acceleration (GPU).

cpu.webp

gpu.webp

Aleksandar Mitov
www.renarvisuals.com CGI and 3D rendering services
email: office@renarvisuals.com

Affinity Photo 2.6.3  Windows 10 Pro x64 ver. 22H2  AMD Ryzen 9950X 16-core + 96 GB DDR5  GeForce RTX 5090 32GB + driver 572.83

Posted

That seems more appropriate to report as a Bug, @Alex_M. The results should be the same, assuming you don't have a buggy GPU driver (which is also a possibility).

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
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Posted
22 hours ago, Alex_M said:

Photo renders images with Unsharp Mask filter differently when using Hardware Acceleration. Please see the screenshots below. Notice how the edges of the treeline are sharper/more aliased when using Hardware Acceleration (GPU).

I am not certain if there is a "real" difference between hardware acceleration on and off in this case.

I performed some tests with one of my pictures with a live unsharp mask filter applied. Results:

(1) Export to jpg: identical from hardware acceleration on and off.

(2) Screenshots from pictures open in AP, 1:1 (100%) representation: identical from hardware acceleration on and off.

(3) Screenshots from pictures open in AP, representation other than 100%: visible differences from hardware acceleration on and off.

Bottom line: rendering in AP is only approximate for representations other than 100%, screenshots are not really suited for comparisons. You should export your pictures with hardware acceleration on and off and see if the results are different.

 

Win11 pro, 22H2; AMD Ryzen 7 5800X 8-Core, 3.80 GHz; 32GB RAM; NVIDIA GeForce RTX 3060Ti, studio driver 528.49

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