NAME fglColorMaterial - cause a material color to track the current color FORTRAN SPECIFICATION SUBROUTINE fglColorMaterial( INTEGER*4 face, INTEGER*4 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 fglColorMaterial 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 fglEnable and fglDisable with argument GL_COLOR_MATERIAL. GL_COLOR_MATERIAL is initially disabled. NOTES fglColorMaterial makes it possible to change a subset of material parameters for each vertex using only the fglColor command, without calling fglMaterial. If only such a subset of parameters is to be specified for each vertex, calling fglColorMaterial is preferable to calling fglMaterial. Call fglColorMaterial before enabling GL_COLOR_MATERIAL. Calling fglDrawElements may leave the current color indeterminate. If fglColorMaterial 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 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 fglColorMaterial is executed between the execution of fglBegin and the corresponding execution of fglEnd. ASSOCIATED GETS fglIsEnabled with argument GL_COLOR_MATERIAL fglGet with argument GL_COLOR_MATERIAL_PARAMETER fglGet with argument GL_COLOR_MATERIAL_FACE SEE ALSO fglColor, fglColorPointer, fglDrawElements, fglEnable, fglLight, fglLightModel, fglMaterial