The rendering modes used by the Font Engine to render glyphs.
| SMOOTH_HINTED | Renders a bitmap representation of the glyph from an 8-bit or antialiased image of the glyph outline with hinting. | 
| SMOOTH | Renders a bitmap representation of the glyph from an 8-bit or antialiased image of the glyph outline with no hinting. | 
| RASTER_HINTED | Renders a bitmap representation of the glyph from a binary (1-bit monochrome) image of the glyph outline with hinting. | 
| RASTER | Renders a bitmap representation of the glyph from a binary (1-bit monochrome) image of the glyph outline with no hinting. | 
| SDF | Renders a signed distance field (SDF) representation of the glyph from a binary (1-bit monochrome) image of the glyph outline with no hinting. | 
| SDF8 | Renders a signed distance field (SDF) representation of the glyph from a binary (1-bit monochrome) image of the glyph outline with no hinting. | 
| SDF16 | Renders a signed distance field (SDF) representation of the glyph from a binary (1-bit monochrome) image of the glyph outline with no hinting. | 
| SDF32 | Renders a signed distance field (SDF) representation of the glyph from a binary (1-bit monochrome) image of the glyph outline with no hinting. | 
| SDFAA_HINTED | Renders a signed distance field (SDF) representation of the glyph from an 8-bit or antialiased image of the glyph outline with hinting. | 
| SDFAA | Renders a signed distance field (SDF) representation of the glyph from an 8-bit or antialiased image of the glyph outline with no hinting. |