DWRITE_OUTLINE_THRESHOLD enumeration (dwrite_1.h)

  • Article

The DWRITE_OUTLINE_THRESHOLD enumeration contains values that specify the policy used by the IDWriteFontFace1::GetRecommendedRenderingMode method to determine whether to render glyphs in outline mode.

Syntax

typedef enum DWRITE_OUTLINE_THRESHOLD {
  DWRITE_OUTLINE_THRESHOLD_ANTIALIASED,
  DWRITE_OUTLINE_THRESHOLD_ALIASED
} ;

Constants

 
DWRITE_OUTLINE_THRESHOLD_ANTIALIASED
Graphics system renders anti-aliased outlines.
DWRITE_OUTLINE_THRESHOLD_ALIASED
Graphics system renders aliased outlines.

Remarks

Glyphs are rendered in outline mode by default at large sizes for performance reasons, but how large (that is, the outline threshold) depends on the quality of outline rendering. If the graphics system renders anti-aliased outlines, a relatively low threshold is used. But if the graphics system renders aliased outlines, a much higher threshold is used.

Requirements

Requirement Value
Minimum supported client Windows 8 and Platform Update for Windows 7 [desktop apps only]
Minimum supported server Windows Server 2012 and Platform Update for Windows Server 2008 R2 [desktop apps only]
Header dwrite_1.h

See also

IDWriteFontFace1::GetRecommendedRenderingMode