Text scaling issues

When a font is drawn at a different size than the resolution at which its glyphs were rasterized, it looks blurry or jagged. Supersampling addresses this by rasterizing each glyph at a higher resolution than the displayed size, then scaling it down via a ScaledSpriteFont — blending source pixels smooths edges and preserves detail.

Enabling supersampling in FSS

• FontResolutionFactor — the scale at which glyphs are rasterized relative to the requested size. Any non-null value (e.g. 2.0f) enables supersampling.
• KernelWidth / KernelHeight — passed to stbtt__h_prefilter/stbtt__v_prefilter; a small blur pre-filter that helps reduce aliasing. The best results are typically obtained with all three set to 2. These only apply to the default (StbTrueTypeSharp) rasterizer.

Setting it for a specific FontSystem or all systems

Set on FontSystemDefaults to apply to all font systems:

FontSystemDefaults.FontResolutionFactor = 2.0f;
FontSystemDefaults.KernelWidth = 2;
FontSystemDefaults.KernelHeight = 2;

Or set on FontSystemSettings for a specific system:

var settings = new FontSystemSettings();
settings.FontResolutionFactor = 2.0f;
settings.KernelWidth = 2;
settings.KernelHeight = 2;
var fontSystem = new FontSystem(settings);