glColorMaterial

NAME

glColorMaterial -- cause a material color to track the current color

C SPECIFICATION

void glColorMaterial(GLenum face,

GLenum mode)

PARAMETERS

face

Specifies, whether front, back, or both front and back material parameters should track the current color. Accepted values are GL_FRONT, GL_BACK, and GL_FRONT_AND_BACK. The default value is GL_FRONT_AND_BACK.

mode

Specifies which of several material parameters track the current color. Accepted values are GL_EMISSION, GL_AMBIENT, GL_DIFFUSE, GL_SPECULAR, and GL_AMBIENT_AND_DIFFUSE. The default value is GL_AMBIENT_AND_DIFFUSE.

DESCRIPTION

glColorMaterial specifies which material parameters track the current color. When GL_COLOR_MATERIAL is enabled, the material parameter or parameters specified by mode, of the material or materials specified by face, track the current color at all times.

GL_COLOR_MATERIAL is enabled and disabled using the commands glEnable and glDisable, called with GL_COLOR_MATERIAL as their argument. By default, it is disabled.

NOTES

glColorMaterial allows a subset of material parameters to be changed for each vertex using only the glColor command, without calling glMaterial. If only such a subset of parameters is to be specified for each vertex, glColorMaterial is preferred over calling glMaterial.

ERRORS

GL_INVALID_ENUM is generated if face or mode is not an accepted value.

GL_INVALID_OPERATION is generated if glColorMaterial is called between a call to glBegin and the corresponding call to glEnd.