Fix Android blank screen

[rollerozxa]

Fixes #12573, caused by 051181f clamping the screen width and height to at least 1, which breaks on Android where those are set to 0.

To do

This PR is a Ready for Review.

How to test

Install the Android version and see so that it actually works again.

[rubenwardy]

Wack. If this needs to be 0, should this be hard coded rather than using the setting?

[rollerozxa]

Good idea, I was just about to ask if I should do that.

[sfan5]

It sounds like screen_w and screen_h should be allowed to be zero if fullscreen == true instead of adding android specific code.

[rollerozxa]

I kept the default settings since they are still getted for code related to autosaving screen size that still gets run on Android, might introduce additional issues if that were to be removed.

[rollerozxa]

It sounds like screen_w and screen_h should be allowed to be zero if fullscreen == true instead of adding android specific code.

Setting screen_w and screen_h to zero even when fullscreen is enabled crashes for me on desktop Linux, so I'm pretty sure this would only be a quirk specific to Android.

[sfan5]

Setting screen_w and screen_h to zero even when fullscreen is enabled crashes for me on desktop Linux

works for me
nevermind, but this should probably be made to work inside Irrlicht

[rollerozxa]

That's because the screen size settings are clamped to at least 1 with the current code, forgot to say I tried that with the check removed. 😅

[sfan5]

lgtm