Hello, I have been wondering this for a while, and I just cannot figure out what would cause this problem. I think there is a high chance its a driver issue, but I noticed that I had quite terrible performance on windows 10 as well with open gl, which again could be just windows 10 and not every single driver for my computer working correctly. Edit: Looks like this is more an issue I have in linux rather than also a thing in windows 10. On win 10, I simply just have terrible performance with opengl, and that is most likely a driver issue or some sort.
What I do is as following in linux mint:
I fly back so that I see, everything moving. Then I resize the window by hitting alt+enter a couple of times. After a few resizes the fps just drops down a lot. Like it could be 200 fps in the beginning, after resizing couple of times, it drops down to 30 or something.
Originally I was using window-resizable and it seems to make the fps drop quite often, since it resizes once in the beginning.
Maybe this has something to do with context? Like if there is too much stuff to load on size change, and it isnt finished or something, it does some really weird stuff.
Again as said this could be completely my computers own driver problem. I noticed with linux I do have some problems with ALSA from time to time and my gpu has had some issues before with various things (Ati HD 5870), so I wouldn’t be surprised if this doesn’t affect anyone else.
Initial fps, 1920x1040ish
After resizing it few times, something x something (smaller resolution)
Edit: Actually I can simply use alt+enter couple of times, so there is no need to even make the window resizable or any code change to 06_SkeletalAnimation.
Edit2: It doesn’t seem to affect windows 10 for me. I simply just have terrible performance on win 10 with opengl, probably due to bad drivers or some sort of driver conflict.
Edit3: Forgot to mention, that if I use windowed mode, and I keep resizing it after the fps drop, it might actually suddenly get higher fps than the initial. Also what happens with the higher fps is that it starts to blink, like in some frames you can see through the window or something.
Also forgot to mention, that this existed before the opengl3 render-change.