4.23 Vulkan performance compared to OpenGl3.1 ?

Development Rendering
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1

Using 4.23.0 -
I see a big performance drop of about 18 to 24 fps on the Oculus Quest in several projects when using Vulkan compared to OpenGl 3.1. Dropping from 72 fps to 54 ot 48 fps (fps measured using OculusMetricsTool on the Quest).

Using Renderdoc trying to find some logic in this. See pic;

  • in this project, the Sky is taking 323 out of 372 on the mobileBasePass.
  • the groundplane takes 18.69 out of 372.
  • if I delete the Sky and debug it again, the ground plane value increases from 18.69 to 328. There’s no logic in this because this plane is just near the house and doesn’t extend the boundaries of the sky so deleting the sky doesn’t result in more pixels to be drawn for this object.

Anyone else notices fps drops for Vulkan? Suggestions?

290416-renderdoc-vulkan.jpg
290416-renderdoc-vulkan.jpg1200×304 129 KB

2

Hey I currently see the same issue, years later :smiley:
Any update on your findings about their different performance costs would help me and others here.

Also, how did you get the draw call timings to show up in renderdoc?
I only see 0.0 for each draw call!