SDL3: FRect changes, what to do?

[ankith26]

So SDL3 has introduced some FRect changes that break our FRect.clipline tests (ref: libsdl-org/SDL#6791 (comment))

TL;DR is the changes make FRect operations more mathematically correct (SDL2 FRect would handle top/left edges differently from bottom/right edges) but the changes are inconsistent with regular Rect.clipline which notably hasn't changed since SDL2.

We now have two options:

1. Retain SDL2 behaviour.
2. Switch to SDL3 behaviour.

Given FRect is pygame-ce specific functionality introduced not too long ago, I think switching to SDL3 way of doing things right away isnt a bad idea. Opening this issue to get more people's opinions on this.

[MightyJosip]

changes make FRect operations more mathematically correct

I would always go for this. For me personally correctness > everything else

[aatle]

IMO, these changes can be considered bug fixes, right. Especially for mathematical correctness.
And it would be better to be consistent with SDL3 instead of SDL2.

[bigwhoopgames]

Would switching to SDL3 behavior fix this: #3047 ?

If so great.

[ankith26]

I think it would (untested hunch)