/dəˈrɛkt-raɪt/

n. “A Microsoft API for high-quality text rendering and layout on Windows systems.”

DirectWrite is a component of DirectX designed to provide hardware-accelerated text rendering with advanced typographic features. It integrates with Direct2D and Direct3D to deliver sharp, high-performance text in applications ranging from desktop software to games and multimedia programs.

Key characteristics of DirectWrite include:

  • High-Quality Text Rendering: Supports ClearType, anti-aliasing, and subpixel rendering for crisp, readable text.
  • Advanced Typography: Handles OpenType features, ligatures, kerning, and complex scripts.
  • Hardware Acceleration: Leverages GPU via Direct2D/Direct3D for fast rendering.
  • Integration with Graphics APIs: Works seamlessly with Direct2D for 2D graphics and Direct3D for hybrid 2D/3D scenes.
  • Unicode Support: Full support for international text and multiple scripts.

Conceptual example of DirectWrite usage:

// Rendering text on a window
Initialize DirectWrite factory
Create text format with font, size, and style
Create text layout object
Draw text onto Direct2D render target
Apply anti-aliasing or effects as needed

Conceptually, DirectWrite is like a GPU-powered typesetter, ensuring that text in your applications is rendered clearly, beautifully, and efficiently, no matter the font, language, or resolution.