Luma key broken in new Real time compositor #105271

Closed
opened 2023-02-27 21:16:21 +01:00 by Slinc_HD-1 · 9 comments

System Information
Operating system: Windows 1ß
Graphics card: Nvidia rtx 3060 12gb

Blender Version
Broken: 3.6a

Short Description
The Luma key in the new Realtime compositor dosn't work at all image on the left you can see the viewport with viewport compositor on and i am using the luma key wich makes it completly white but on the right you can see the normal compositor with Backdrop enabled so on the right is the working version of the luma key

Steps to Reproduce

  • Open attached file
  • Switch to viewport rendering
  • Enable Viewport compositor from shading popover
**System Information** Operating system: Windows 1ß Graphics card: Nvidia rtx 3060 12gb **Blender Version** Broken: 3.6a **Short Description** The Luma key in the new Realtime compositor dosn't work at all [image](/attachments/c6e5460c-b642-4963-b390-81a9dcccf588) on the left you can see the viewport with viewport compositor on and i am using the luma key wich makes it completly white but on the right you can see the normal compositor with Backdrop enabled so on the right is the working version of the luma key **Steps to Reproduce** - Open attached file - Switch to viewport rendering - Enable Viewport compositor from shading popover
Slinc_HD-1 added the
Priority
Normal
Type
Report
Status
Needs Triage
labels 2023-02-27 21:16:22 +01:00
Member

Thanks for the report. I can confirm.
cc @OmarEmaraDev

Thanks for the report. I can confirm. cc @OmarEmaraDev
Member

I can't reproduce the issue myself. It is possible that this is a driver bug of some sort. Could you try this slightly different node tree and see if it is any different?

20230307-130710.png

I can't reproduce the issue myself. It is possible that this is a driver bug of some sort. Could you try this slightly different node tree and see if it is any different? ![20230307-130710.png](/attachments/602e6960-9e1e-468e-8b6a-faecb0991bb1)
Omar Emara added
Status
Needs Triage
and removed
Status
Confirmed
labels 2023-03-07 12:09:38 +01:00
Author

image No it dose not fixes the issue in the viewport with real time compositor

I have the Nvida RTX 3060 12GB GPU with the Game ready driver Version 531.18

![image](/attachments/6a2e4a60-05b9-43d3-b92e-d38dfee22aca) No it dose not fixes the issue in the viewport with real time compositor I have the Nvida RTX 3060 12GB GPU with the Game ready driver Version 531.18
350 KiB
Member

Okay. I would like to check if anyone on a different platform can reproduce that issue as well. So I will wait for other triagers for now.

Okay. I would like to check if anyone on a different platform can reproduce that issue as well. So I will wait for other triagers for now.

I can confirm the issue:

Renderer: NVIDIA GeForce RTX 3060 Laptop GPU/PCIe/SSE2

image

Nothing unusual appeared on the console.

I can confirm the issue: ``` Renderer: NVIDIA GeForce RTX 3060 Laptop GPU/PCIe/SSE2 ``` ![image](/attachments/9b72ef7b-a195-48d6-bcb5-af59833f6510) Nothing unusual appeared on the console.
519 KiB
Member

@OmarEmaraDev , your guess seems correct. I'm unable to confirm with iGPU: image

**System Information**
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.14802 Core Profile Context 21.40.26 30.0.14026.1

Affected system:

**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```
@OmarEmaraDev , your guess seems correct. I'm unable to confirm with iGPU: [image](/attachments/101324fc-0b02-4a75-af38-cad9fd60ce03) ``` **System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.14802 Core Profile Context 21.40.26 30.0.14026.1 ``` - - - Affected system: ``` **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```
635 KiB

Blender 3.6a
Windows 10, 2070S 528.49
image

Blender 3.6a Windows 10, 2070S 528.49 ![image](/attachments/6eb82d34-f9a2-484e-845b-e2e17500b0aa)
244 KiB
Jeroen Bakker added this to the EEVEE & Viewport project 2023-03-13 15:16:34 +01:00
Jeroen Bakker added this to the 3.5 milestone 2023-03-13 15:16:38 +01:00
Member

Is this also a Blender 3.5 issue, or only related to Blender 3.6?

Assigning issue to me, to find out what is the difference between AMD/NVIDIA in this case.

Is this also a Blender 3.5 issue, or only related to Blender 3.6? Assigning issue to me, to find out what is the difference between AMD/NVIDIA in this case.
Jeroen Bakker self-assigned this 2023-03-13 15:19:26 +01:00
Member

Reproducable with

Operating system: Linux-6.0.12-76060006-generic-x86_64-with-glibc2.35 64 Bits
Graphics card: Quadro RTX 5000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 525.85.05

Nouveau drivers didn't had this issue.

Issue seems like the clamping inside the luminance

Reproducable with ``` Operating system: Linux-6.0.12-76060006-generic-x86_64-with-glibc2.35 64 Bits Graphics card: Quadro RTX 5000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 525.85.05 ``` Nouveau drivers didn't had this issue. Issue seems like the clamping inside the luminance
Blender Bot added
Status
Archived
and removed
Status
Needs Triage
labels 2023-03-13 16:08:06 +01:00
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Reference: blender/blender#105271
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