RenderWindow Pixelated in Fullscreen

vvvv gamma question
1

I discovered a strange behaviour today with the Stride RenderWindow.

When rendering a high resolution texture (7680x2160 pixels) to a RenderWindow I get a pixelated output when going to Fullscreen Mode on a big LED Screen.
However if I don’t go to fullscreen, but just set the dimensions and position of the RenderWindow via SetWindowState it’s super crisp. I can even toggle back and forth with SetFullscreen and the window size stays the same, but it gets pixelated, whenever fullscreen is active.

Has anybody else experienced something similar?

2

Check if the window size is actually 7680 x 2160 when in fullscreen.

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3

Thanks for the suggestion! I checked that already and resolution remains correct if I toggle fullscreen on and off.

4

can you tell us a bit more about your setup? how many gpus, desktops/resolutions? also a minimal patch that shows the issue might help.

5

Yes of course!

The PC has two GPUs (2x5070ti) one is used for tracking purposes, the main GPU is rendering content and is connected with 2 HDMI outputs to a video mixer, which is connected to a LED wall. The 2 desktops going to the video mixer are connected via Nvidia surround, so that the output resolution is 7680x2160.

I will have a look if I can come up with a patch that makes it reproducible on another setup than this one.

6

What’s the dpi scaling on the surround screen? If it’s not 100%, set it to 100% and check if it changes the behavior.

7

Good hint, maybe it’s as easy as that. I‘ll check that as soon as I can and report back here.