V1 bug still present on 2.0.0

[AP-]

I seem to have a similar issue. I don't have a file to share at the moment, but I have noticed that this tends to happen if I have metal compute on. It does not happen for the first few files I edit, but seems to creep up over the course of the day.

 

The workflow I have is this - open raw file, develop. Apply macro. This applies two live layers a HSL layer and a LUT. The end result is a desaturated (grey) image, but in a 16-bit per channel RGB file before the final flatten. At this stage things seem fine. However, when flattened the image does not stay the same (unlike when it is working without the bug) and some tiles look marginally darker or lighter than they should be (there is a visible edge artefact around the tile).

I have turned off metal computer and do not have the issue.

The next time this happens I will try and upload a picture.

[Paul Mudditt]

It is no surprise that if you had a metal compute problem with V1 then this would continue with V2 since the problem lies with your graphics card and graphics driver combination and not so much Affinity.

In particular make sure you are not using a graphics driver adapted for games and check to see if there is an alternative driver made for graphic’s accuracy. 

[AP-]

Ah this makes sense. Let me clarify.

The issue was reported by someone else on v1.9.

I have had the same issue they reported but on v2.0.0. On the other hand using the same hardware/OS combination with v1.9 and v1.10, I don't get this issue. For me it is only on v2.0.0 which made me think maybe there is a bug.

I am on macos Monterey therefore my hands are somewhat tied regarding hardware/driver combinations. It is a 2017 MacBook Pro.

On the other hand if there is a bug other users might also have recurring fairly difficult to troubleshoot issues.

I will endeavour to reproduce this.

[AP-]

Right here is a description of below:

Original has gradients in it. Apply a LUT live layer to turn this BW (apologies, forgot to save original). Video shows the issue. Flattened that. Saved PNG with glitch in it. (you can see a tile border in there). Undo/flatten a few times and save the .aphoto file as a flattened file as well. Notice the tile glitch is in a different place.

This is with metal compute on, and does not happen with it turned off.

It also glitches when zooming in and out. Before you say this is desired behaviour - I'd counter with whether it is desired or not, the result should be the same every time and consistent. But it isn't.

I suspect this is a bug. And because it only happens after an hour or two of use, some sort of memory/buffer overflow issue, or leak.

Thoughts on the matter appreciated.

EDIT: Have now included the BW.cube file the LUTS is using.

Hardware is 2017 MBP 17" running macos Monterey 12.6, it has both a Radeon Pro 560 4GB and an Intel HD Graphics 630 - they both use stock drivers, because, macos.

  Model Name:    MacBook Pro
  Model Identifier:    MacBookPro14,3
  Processor Name:    Quad-Core Intel Core i7
  Processor Speed:    2.9 GHz
  Number of Processors:    1
  Total Number of Cores:    4
  L2 Cache (per Core):    256 KB
  L3 Cache:    8 MB
  Hyper-Threading Technology:    Enabled
  Memory:    16 GB
  System Firmware Version:    451.140.1.0.0
  OS Loader Version:    540.120.3~22
  SMC Version (system):    2.45f5

Detail of the graphics chips:

Intel HD Graphics 630:

  Chipset Model:    Intel HD Graphics 630
  Type:    GPU
  Bus:    Built-In
  VRAM (Dynamic, Max):    1536 MB
  Vendor:    Intel
  Device ID:    0x591b
  Revision ID:    0x0004
  Automatic Graphics Switching:    Supported
  gMux Version:    4.0.29 [3.2.8]
  Metal Family:    Supported, Metal GPUFamily macOS 2

Radeon Pro 560:

  Chipset Model:    Radeon Pro 560
  Type:    GPU
  Bus:    PCIe
  PCIe Lane Width:    x8
  VRAM (Total):    4 GB
  Vendor:    AMD (0x1002)
  Device ID:    0x67ef
  Revision ID:    0x00c0
  ROM Revision:    113-C980AJ-927
  VBIOS Version:    113-C9801AU-A02
  EFI Driver Version:    01.A0.927
  Automatic Graphics Switching:    Supported
  gMux Version:    4.0.29 [3.2.8]
  Metal Family:    Supported, Metal GPUFamily macOS 2

 

 

a terrible job-glitch.afphoto

BW.cube

Edited December 1, 2022 by AP-

[Chris B]

Hey AP-,

It looks more like you're seeing the render tiles get stuck. I looked back at Alex M's post and the squares seemed a bit more random, whereas in the video they seem more aligned? Zooming in/out will also make different tiles pop in and out - though they ought to vanish once the canvas finishes rendering.

Can you quickly go to Preferences > Performance and change the Retina Rendering to High Quality and see if that changes it.

[AP-]

Have just done the settings. will have to play around with it for a while.

 

Meanwhile, the thing that was really bugging me with this is that when you flatten the document, the odd artefacts are rendered into the flattened file. That only happens with metal compute on. Is that something the devs need to look at?

 

There is also a very glitchy tiling issue similar to this but outside of the canvas I have reported on Publisher 2 with a live perspective filter applied in the Photo persona.