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- The OpenGL Character Renderer (GLC) is a state machine that provides
- OpenGL programs with character rendering services via an application
- programming interface (API).
- The character rendering services provided by GLC has some significant
- advantages over platform specific interface such as GLX or WGL:
- 1. The GLC API is platform independent. Since most nontrivial GL
- applications render characters, GLC is an important step toward
- the goal of truly portable GL applications.
- 2. The GLC is simpler to use. Only two lines of GLC commands are
- required to prepare for rendering characters.
- 3. GLC provides more ways to exploit the rendering power of OpenGL.
- For example, a glyph can be drawn as a bitmap, a set of lines, a
- set of triangles, or a textured rectangle.
- 4. GLC provides better support for glyph transformations. For
- example, GLC supports rotated text, which is unavailable in GLX.
- 5. GLC provides better support for the large coded character set
- defined by the standards ISO/IEC 10646:2003 and Unicode 4.0.1
- QuesoGLC is an implementation of the GLC. QuesoGLC is based on the
- FreeType library, provides Unicode support and is designed to be
- easily ported to any platform that supports both FreeType and the
- OpenGL API.
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