RPI 2 White Screen with different Sizes

Hey oF Community!

I’m encountering a strange problem with an oF app for RPI 2. If the size of my app window is too large it just displays a white screen, however with smaller sizes it displays everything correctly

in main.cpp if I change the line ofSetupOpenGL(1024, 768, OF_WINDOW);
to ofSetupOpenGL(1024/2, 768/2, OF_WINDOW); it goes from a white screen to displaying what it should display.

It’s also the case that if I change OF_WINDOW to OF_FULLSCREEN the app window is white again.

This does not happen with many apps, ie it does not happen with examples etc.

One other thing to note is that if I do a println() in draw, when it displays the white screen it prints very slowly ie 2 or 3 cycles per second whereas when it is displaying correctly but in the smaller size it prints very quickly ie at regular speed.

Any help with this?



It’s worth noting that I’m using the rpi camera for the app with ofxCvPiCam and I think this has something to do with it.

Looking into it now.

Hey @Bentley - just to confirm, what version of oF are you using and how did you set it up?

I’m using 0.8.4 and I’m using the setup guide that you posted.

I think it had to do with the expanding the GPU mem, I set it to 256 and it seemed to fix the problem, however now I’m not getting the camera feed in.

Alright Problem solved, I just expanded the GPU memory in advanced options of raspi-config to 256.

Strange that I should need that much GPU memory but oh well!

Thanks bakercp!