GLCOLORMATERIAL() 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 para- meters 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_AM- BIENT_AND_DIFFUSE. DESCRIPTION glColorMaterial specifies which material parameters track the current color. When GL_COLOR_MATERIAL is enabled, the material parameter or para- meters 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 disabled. NOTES glColorMaterial makes it possible to change a subset of material parameters 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 may leave the current color indeterminate. If gl- ColorMaterial is enabled while the current color is indeterminate, the lighting material state specified by face and mode is also indeterminate. 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 track- ing 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, glColorPointer, glDrawElements, glEnable, glLight, glLightModel, glMaterial GLCOLORMATERIAL()
NAME | C SPECIFICATION | PARAMETERS | DESCRIPTION | NOTES | ERRORS | ASSOCIATED GETS | SEE ALSO
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