Font antialiasing fix

[iiAngel]

Basically native anti-aliased font rendering

[iiAngel]

Its not as perfect, but wanted to put this PR to see any other way to render it a bit better and have no outlines

[ZiYueCommentary]

Thank you for contributing! 😄

The antialiasing works fine when the text size is big, but in small size conditions, it brings the same issue as the Vanilla engine.

As you can see, they are not very clear.

Maybe this feature requires more optimization. I will also contact with Blitz3D developers to see their opinions.

[iiAngel]

Yes investigating a bit more of the source code i found out that since setMask only takes one color value its going to be hard to get some good coloring on the texts too.

And the limitation of setPixelFast only having one pixel for transparency makes things a bit harder to display 😓

[ZiYueCommentary]

Maybe it can be an optional feature that Blitz3D developers can enable manually. Since it seems way different with the non-antialised one, I'm afraid that it could not replace the original one directly.

[ZiYueCommentary]

It breaks the color of small-size texts too. So it requires more optimization for now.

[ZiYueCommentary]

@iiAngel Can you help us to make a underline/strikethrough feature #15 ? It is useful but sadly I'm not very good at font rendering.

Thank you! 🙂