Two identical texture file nodes, but drastically different playback performance on Cycles #100106

New Issue

nameless · 2022-08-01T01:59:57+02:00

nameless commented

2022-08-01 01:59:57 +02:00

System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59

Blender Version
Broken: version: 3.2.1, branch: master, commit date: 2022-07-05 15:44, hash: a2d59b2dac

Short description of error
Playback in viewport with Cycles is laggy when using bottom texture node. Top texture node provides smooth playback. Those two textures nodes seem to be identical, have identical mapping, are using identical image file and I don't know why there's a difference in playback smoothness.

Possibly to happen in 3.3.0, too (difficult to narrow down as it seems there might be few factors that slow down playback with Cycles).

Exact steps for others to reproduce the error

plug top texture node to Base input of Principled node, hit Play, camera movement is relatively smooth
change texture node to bottom one and camera movement is laggy/choppy (with optix)

Video demonstration: https:*files.catbox.moe/t1xxbd.mp4 or https:*files.catbox.moe/n75y4r.mp4

Screenshot of node setup (top texture node is fine, bottom one is problematic):

I can send privately a bit simplified .blend file to developer.
test file (not complete):
https://drive.google.com/file/d/1Rb1nNZhsdWzGN-6FFITyw08zQw5wEnof/view?usp=sharing

**System Information** Operating system: Windows-10-10.0.17763-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59 **Blender Version** Broken: version: 3.2.1, branch: master, commit date: 2022-07-05 15:44, hash: `a2d59b2dac` **Short description of error** Playback in viewport with Cycles is laggy when using bottom texture node. Top texture node provides smooth playback. Those two textures nodes seem to be identical, have identical mapping, are using identical image file and I don't know why there's a difference in playback smoothness. Possibly to happen in 3.3.0, too (difficult to narrow down as it seems there might be few factors that slow down playback with Cycles). **Exact steps for others to reproduce the error** 1. plug top texture node to Base input of Principled node, hit Play, camera movement is relatively smooth 2. change texture node to bottom one and camera movement is laggy/choppy (with optix) Video demonstration: https:*files.catbox.moe/t1xxbd.mp4 or https:*files.catbox.moe/n75y4r.mp4 Screenshot of node setup (top texture node is fine, bottom one is problematic): ![image.png](https://archive.blender.org/developer/F13328104/image.png) I can send privately a bit simplified .blend file to developer. test file (not complete): https://drive.google.com/file/d/1Rb1nNZhsdWzGN-6FFITyw08zQw5wEnof/view?usp=sharing

nameless commented

2022-08-01 01:59:57 +02:00

Added subscriber: @tonpix

Pratik Borhade commented

2022-08-01 02:09:08 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-08-01 02:09:08 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Pratik Borhade commented

2022-08-01 02:09:08 +02:00

Thanks for the report. Please upload .blend publicly if possible

nameless commented

2022-08-01 02:21:03 +02:00

In #100106#1397629, @PratikPB2123 wrote:
Thanks for the report. Please upload .blend publicly if possible

https://drive.google.com/file/d/1Rb1nNZhsdWzGN-6FFITyw08zQw5wEnof/view?usp=sharing

> In #100106#1397629, @PratikPB2123 wrote: > Thanks for the report. Please upload .blend publicly if possible https://drive.google.com/file/d/1Rb1nNZhsdWzGN-6FFITyw08zQw5wEnof/view?usp=sharing

Charlie Jolly commented

2022-08-01 11:44:35 +02:00

Added subscriber: @CharlieJolly

Pratik Borhade commented

2022-08-02 02:30:50 +02:00

Thanks for the file. I've not been able to notice any performance drop with either texture connection.
Looks like some textures are missing from the file (all objects are in magenta color when switched to cycles)
Only sketchbookCover.jpg texture is available in file.

Thanks for the file. I've not been able to notice any performance drop with either texture connection. Looks like some textures are missing from the file (all objects are in magenta color when switched to cycles) Only `sketchbookCover.jpg` texture is available in file.

nameless commented

2022-08-02 02:42:09 +02:00

In #100106#1398339, @PratikPB2123 wrote:
Thanks for the file. I've not been able to notice any performance drop with either texture connection.
Looks like some textures are missing from the file (all objects are in magenta color when switched to cycles)
Only sketchbookCover.jpg texture is available in file.

Can't publicly provide fully-textured .blend file due to licensing risk, hence my original suggestion to send file privately.

Nonetheless, with simplified, pink .blend file I'm still seeing performance difference when playing in Cycles viewport. There's new video demo for that specific TextureNodeBug.blend:

https://files.catbox.moe/n75y4r.mp4

> In #100106#1398339, @PratikPB2123 wrote: > Thanks for the file. I've not been able to notice any performance drop with either texture connection. > Looks like some textures are missing from the file (all objects are in magenta color when switched to cycles) > Only `sketchbookCover.jpg` texture is available in file. Can't publicly provide fully-textured .blend file due to licensing risk, hence my original suggestion to send file privately. Nonetheless, with simplified, pink .blend file I'm still seeing performance difference when playing in Cycles viewport. There's new video demo for that specific TextureNodeBug.blend: https://files.catbox.moe/n75y4r.mp4

Pratik Borhade commented

2022-08-02 02:57:28 +02:00

Thanks for the information. I'll ask others to check this issue

Jesse Yurkovich commented

2022-08-02 06:36:20 +02:00

Added subscriber: @deadpin

Jesse Yurkovich commented

2022-08-02 06:36:20 +02:00

I can reproduce here using an older 1070 - but only when using OptiX, CUDA and CPU seem fine.

nameless commented

2022-08-02 06:46:01 +02:00

In #100106#1398360, @deadpin wrote:
I can reproduce here using an older 1070 - but only when using OptiX, CUDA and CPU seem fine.

I think it's identical case for me on 3080 - CUDA/None and OptiX+CPU seem to have smooth/equal performance on both texture nodes. It's Optix+GPU that results in choppy playback on bottom texture node.

> In #100106#1398360, @deadpin wrote: > I can reproduce here using an older 1070 - but only when using OptiX, CUDA and CPU seem fine. I think it's identical case for me on 3080 - CUDA/None and OptiX+CPU seem to have smooth/equal performance on both texture nodes. It's Optix+GPU that results in choppy playback on bottom texture node.

Pratik Borhade commented

2022-08-02 08:17:44 +02:00

Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'

Pratik Borhade commented

2022-08-02 08:17:44 +02:00

I too noticed some performance drop when rendering with Optix. Will forward this report to developers

Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3050 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.78```

I too noticed some performance drop when rendering with Optix. Will forward this report to developers ```**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3050 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.78```

blender-admin commented

2022-08-02 15:21:48 +02:00

This issue was referenced by f6ca44efd6

This issue was referenced by f6ca44efd61f419eadffb7b78868c8d0b6f5e5a9

Brecht Van Lommel commented

2022-08-02 15:25:03 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2022-08-02 15:25:03 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Confirmed'

Brecht Van Lommel self-assigned this 2022-08-02 15:25:03 +02:00

Brecht Van Lommel commented

2022-08-02 15:25:03 +02:00

One of the two nodes has "Auto Refresh" set, only visible when you switch to image sequence. That should have no effect in this case.

Brecht Van Lommel commented

2022-08-03 19:55:08 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Brecht Van Lommel closed this issue

2022-08-03 19:55:08 +02:00

nameless commented

2022-08-11 20:18:14 +02:00

Thanks for fixing. Is build with the fix downloadable somewhere? I've tried daily builds, but seems it doesn't have a fix and I don't know how/when fixes are implemented. Could someone explain me?

blender-admin commented

2022-08-15 19:27:46 +02:00

This issue was referenced by 74e6218c35

This issue was referenced by 74e6218c35e839d27ab9db6ad956c24bb47f464e

Brecht Van Lommel commented

2022-08-15 20:34:51 +02:00

It should be in the daily builds. However my fix was incomplete, it should hopefully be fixed in tomorrow's build.

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Two identical texture file nodes, but drastically different playback performance on Cycles #100106