by behdad

behdad / glyphy

GLyphy is a signed-distance-field (SDF) text renderer using OpenGL ES2 shading language.

452 Stars 59 Forks Last release: Not found Other 707 Commits 0 Releases

Available items

No Items, yet!

The developer of this repository has not created any items for sale yet. Need a bug fixed? Help with integration? A different license? Create a request here:

GLyphy is a signed-distance-field (SDF) text renderer using OpenGL ES2 shading language.

The main difference between GLyphy and other SDF-based OpenGL renderers is that most other projects sample the SDF into a texture. This has all the usual problems that sampling has. Ie. it distorts the outline and is low quality.

GLyphy instead represents the SDF using actual vectors submitted to the GPU. This results in very high quality rendering, though at a much higher runtime cost.

See this video for insight to how GLyphy works:

Dicussions happen on:!forum/glyphy

On GNOME3 and possibly other systems, if the vsync extension is not working (ie. pressing

in the demo doesn't have any effect), try running with
env var.

Compilation instructions on Mac OS X

  1. Install Xcode and command line tools (as of Xcode 4.3.x, from   within
  2. Install MacPorts.
  3. sudo port install automake autoconf libtool pkgconfig freetype
  4. ./
  5. make

Compilation instructions on Windows

See appveyor.yml, basically first get vcpkg and install

on it, then open win32\glyphy.sln with Visual Studio.

Compilation instructions for emscripten

Assuming you have installed emscripten and have its tools on path,

  2. CPPFLAGS='-s USE_FREETYPE=1' LDFLAGS='-s USE_FREETYPE=1' emconfigure ./configure
  3. make EXEEXT=.html GL_LIBS= GLUT_LIBS=
  4. The result will be located on

We use cookies. If you continue to browse the site, you agree to the use of cookies. For more information on our use of cookies please see our Privacy Policy.