Change sceGuViewport params from int to float

[veka0]

This enables more flexibility in configuring viewport as you'd be able to specify it with subpixel precision.

sceGuViewport can still be used as before, with integer parameters and behavior of existing code will remain the same, however if someone for some reason is already using sceGuViewport with float parameters, by relying on conversion from float to int to truncate fractional part, with this change behavior of such implementations will be slightly different as viewport transform may be off by up to 1 pixel. To me it seems unlikely that someone was using it in this way, or that it will have a major impact and break something, but that's not up to me to decide.

[fjtrujy]

I think this PR is a mistake...
If you want to offer sceGuViewport with float values, we can, but please let's keep the int one with the original name, as it follow same API as the official PSPSDK

so create if you want:

void sceGuViewportF(float cx, float cy, float width, float height)

[veka0]

The idea behind this PR was to extend already existing functionality in a backwards compatible(-ish) way. But it's fair if you don't want to touch existing foundational functions like this one, I think in that case it might be a good idea to drop this PR & potentially consider adding that function if and when a real use case appears for it in the wild.

[fjtrujy]

The idea behind this PR was to extend already existing functionality in a backwards compatible(-ish) way. But it's fair if you don't want to touch existing foundational functions like this one, I think in that case it might be a good idea to drop this PR & potentially consider adding that function if and when a real use case appears for it in the wild.

Don’t drop the PR, just add the floating function too, I think is a good idea to have it

[sharkwouter]

I do think adding a sceGuViewportF function is a good idea. Feel free to use this PR to add it.