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Both X-Ray and cavity enabled causes abnormal GPU load
Closed, ResolvedPublicBUG

Description

System Information
Operating system: macOS 10.15.7
Graphics card: AMD Radeon Pro 5500M 8 Gb / Intel UHD Graphics 630
Chrome: 86.0.4240.75

Blender Version
Broken: 2.90.0 (release)
Broken: 2.90.1 (release)

Short description of error

Enabling both cavity and XRay causes Google Chrome (at least) performance degrade drastically.

Video demo:

Exact steps for others to reproduce the error

  • Open attached file or:
- Create new empty project
- Add two array modifiers to the default cube: item count 100, factor -1.2 for X and item count 100, factor 1.2 for Y axis
- Add bevel modifier with default settings
- Enable cavity with default settings
- Enable X-Ray with default settings
  • With Blender maximized (at least on windows) check the GPU usage - (this can be done through the task manager or browsing Google Chrome)

Note that disabling cavity before enabling X-Ray produces different result. In that case Chrome performs as usual.

Event Timeline

Evan Wilson (EAW) renamed this task from Both X-Ray and cavity enabled causes performance issues to Both X-Ray and cavity enabled causes Google Chrome performance issues.Oct 12 2020, 3:11 AM

It is not a Google Chrome issue. Enabling both X-Ray and Cavity gives an abnormal constant 100% GPU load.

Ivan Smith (IvanSmith) renamed this task from Both X-Ray and cavity enabled causes Google Chrome performance issues to Both X-Ray and cavity enabled causes abnormal GPU load.Oct 13 2020, 3:39 PM
Germano Cavalcante (mano-wii) changed the task status from Needs Triage to Confirmed.Oct 14 2020, 4:18 PM
Germano Cavalcante (mano-wii) changed the subtype of this task from "Report" to "Bug".

I can confirm a high usage of the GPU in the task manager when both Cavity and X-Ray are enabled.
The Blender window needs to be maximized for this.
Here the file I used: