Short name for OpenGL Shading Language. See [http://en.wikipedia.org/wiki/GLSL] or [http://www.opengl.org/documentation/glsl/] for more information. [Tcl3D] wraps the GLSL library as part of OpenGL version 2.0. It also has some demonstration programs [http://www.tcl3d.org/cgi-bin/demolist2.tcl?dir=TutorialsAndBooks/Nopper] using GLSL. <> Category Graphics|Category 3D Graphics|Category Tcl3D