glFragmentColorMaterial(3G) OpenGL Reference glFragmentColorMaterial(3G)NAME
glFragmentColorMaterialSGIX - cause a fragment material color to track
the current fragment color
C SPECIFICATION
void glFragmentColorMaterialSGIX( GLenum face,
GLenum mode )
PARAMETERS
face Specifies whether front, back, or both front and back fragment
material parameters should track the current fragment 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 fragment material parameters track the
current fragment 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
glFragmentColorMaterial specifies which fragment material parameters
track the current fragment color. When GL_FRAGMENT_COLOR_MATERIAL_SGIX
is enabled, the material parameter or parameters specified by mode, of
the material or materials specified by face, track the evaluated fragment
color at each vertex.
To enable and disable GL_FRAGMENT_COLOR_MATERIAL_SGIX, call glEnable and
glDisable with argument GL_FRAGMENT_COLOR_MATERIAL_SGIX.
GL_FRAGMENT_COLOR_MATERIAL_SGIX is initially disabled.
NOTES
If GL_FRAGMENT_COLOR_MATERIAL_SGIX is enabled the specified fragment
material parameters used in fragment lighting calculations will track the
fragment color calculated by the regular OpenGL Color and Lighting
operations. Other parameters will use values specified by the most
recent call to glFragmentMaterial at the time of the provoking vertex.
Note that the color used is the result after applying all regular OpenGL
Lighting calculations, not simply the color supplied in the most recent
call to glColor.
ERRORS
GL_INVALID_ENUM is generated if face or mode is not an accepted value.
GL_INVALID_OPERATION is generated if glFragmentColorMaterial is executed
between the execution of glBegin and the corresponding execution of
glEnd.
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glFragmentColorMaterial(3G) OpenGL Reference glFragmentColorMaterial(3G)ASSOCIATED GETS
glIsEnabled with argument GL_FRAGMENT_COLOR_MATERIAL_SGIX
glGet with argument GL_FRAGMENT_COLOR_MATERIAL_PARAMETER_SGIX
glGet with argument GL_FRAGMENT_COLOR_MATERIAL_FACE_SGIX
MACHINE DEPENDENCIES
The SGIX_fragment_lighting extension is supported only on Octane2 VPro
systems.
SEE ALSO
glColor, glEnable, glFragmentLight, glFragmentLightModel,
glFragmentMaterial
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