Options:

OpenGL offers a number of capabilities that may be enabled or disabled.

glEnable(GLenum cap), glDisable(GLenum cap):

Enable/disable some option. Some common options include the following. By default, all are initially disabled.

• GL_CULL_FACE: back-face culling (for hidden surface removal)
• GL_DEPTH_TEST: depth-buffering (for hidden surface removal)
• GL_FOG: fog
• GL_BLEND: color blending
• GL_LIGHTING: lighting
• GL_LIGHTi: turn on/off the ith light source (0 <= i <= 7)
• GL_NORMALIZE: automatic normalization of normals
• GL_TEXTURE_2D: texture mapping

Note that options may be enabled and disabled for individual polygons. For example, texture mapping may be turned on before drawing one polygon, and then turned off for others.

Please report any errors or send comments to Dave Mount

Last updated: Sat, Feb 8, 2003.