[MP] Fix up font renderer glyph positioning

The font renderer now uses floating-point arithmetic when calculating glyph coordinates on the screen.
There should be a noticeable improvement in text positioning for scaled down text such as player chat.
[SP] Fix up font renderer glyph positioning

The font renderer now uses floating-point arithmetic when calculating glyph coordinates on the screen.
There should be a noticeable improvement in text positioning for scaled down text.