Some sort of "tearing" visible when running ParticleEffects Demo with Vulkan

John_Alcatraz
Tue, 20 Nov 2018 15:40:18 +0000
Rendering

I’ve looked at the particle effects demo with Vulkan in 4.21, and I have not done any performance testing, I only packaged the demo in Shipping config with D3D11 and Vulkan APIs enabled, and then compared how it feels to run the resulting exe regularly, and with -vulkan.

I feel no performance difference, likely because both are running into the default VSync, GPU usage is at ~55% with both D3D11 and Vulkan. Both feel nice and responsive.

There is only 1 difference: With Vulkan, there is visible “tearing”. Very easy to reproduce. Position the camera here:

And then use the A and D button to move the camera left/right. There are “lines wandering through the image up/down”.

Is this a known issue @RCaloca ?

Using Win10, GTX 1080, 416.X driver.

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