glColorMaterial(3) glColorMaterial(3)
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 initial 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 initial 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.
To enable and disable GL_COLOR_MATERIAL, call glEnable and glDisable
with argument GL_COLOR_MATERIAL. GL_COLOR_MATERIAL is initially dis-
abled.
NOTES
glColorMaterial makes it possible to change a subset of material param-
eters 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, calling glColorMaterial is preferable to calling
glMaterial.
Call glColorMaterial before enabling GL_COLOR_MATERIAL.
Calling glDrawElements, glDrawArrays, or glDrawRangeElements may leave
the current color indeterminate, if the color array is enabled. If
glColorMaterial is enabled while the current color is indeterminate,
the lighting material state specified by face and mode is also indeter-
minate.
If the GL version is 1.1 or greater, and GL_COLOR_MATERIAL is enabled,
evaluated color values affect the results of the lighting equation as
if the current color were being modified, but no change is made to the
tracking lighting parameter of the current color.
ERRORS
GL_INVALID_ENUM is generated if face or mode is not an accepted value.
GL_INVALID_OPERATION is generated if glColorMaterial is executed
between the execution of glBegin and the corresponding execution of
glEnd.
ASSOCIATED GETS
glIsEnabled with argument GL_COLOR_MATERIAL
glGet with argument GL_COLOR_MATERIAL_PARAMETER
glGet with argument GL_COLOR_MATERIAL_FACE
SEE ALSO
glColor(3), glColorPointer(3), glDrawArrays(3), glDrawElements(3),
glDrawRangeElements(3), glEnable(3), glLight(3), glLightModel(3),
glMaterial(3)
glColorMaterial(3)
Mac OS X 10.6 - Generated Thu Sep 17 20:20:15 CDT 2009