Ubuntu

VSync with PowerVR

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I've been investigating the graphical performance of the Guitar for a potential product, but our product requires v-sync to work.

Using glmark2-es2 -b desktop, I can observe that vsync is disabled.

I have seen some information that the PowerVR can be configured to use vsync in /etc/powervr.ini by setting the WindowSystem parameter to libpvrPVR2D_FLIPWSEGL.so, but this appears to have no effect. Does anyone at LeMaker have any further information they could provide on how to get vsync working?

Thanks!
hnsncxy  
Using glmark2-es2 -b desktop, I can observe that vsync is disabled.
Sorry, How do you judge the  vsync is disabled when you are running the command "glmak2-es2 -b desktop" ?

There is tearing observable in the output. This is simply the easiest scene in which to see it.

hnsncxy  
molesmoke replied at Dec 01, 2015 11:22
There is tearing observable in the output. This is simply the easiest scene in which to see it.

Sorry, I had run the command which you provide, but i didn't find any error message. Therefore, I hope you can provide more information about the problem to us.


There are no error messages; The problem is the horizontal tearing in the graphical output. I'm not quite sure how better to phrase this issue - v-sync is a well known and described feature of graphics cards. You could perhaps look at this article for more information:
https://en.wikipedia.org/wiki/Screen_tearing

I see horizontal tearing in the output similar to the image "A typical video tearing artifact (simulated image)" because v-sync is not working/disabled.

hnsncxy  
molesmoke replied at Dec 10, 2015 03:12
There are no error messages; The problem is the horizontal tearing in the graphical output. I'm not  ...

Thanks for your information, we are looking at this problem.

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