GUI: Snap CharFX offset to nearest pixel when setting is enabled

[398utubzyt]

Rounds fx_offset to the nearest pixel when the viewport's is_snap_controls_to_pixels_enabled is true.

Snap enabled:

charfx_snapped.mp4

Snap disabled/without fix:

charfx_nosnap.mp4

[Calinou]

I think this should depend on the Snap 2D Transforms to Pixel property, rather than Snap Controls to Pixels.

When using the canvas_items stretch mode and a resolution higher than the base window size, it's sometimes desired to have smooth undulating text. Not all games have a pixel art style, yet you almost always want Snap Controls to Pixels to be on to avoid blurry controls 🙂

[398utubzyt]

Makes sense to me. I forgot control snapping is on by default. I've gone ahead and fixed that.

[akien-mga]

Thanks!