GLCOLORPOINTER(3gl)GLCOLORPOINTER(3gl)NAME
glColorPointer - define an array of colors
C SPECIFICATION
void glColorPointer( GLint size,
GLenum type,
GLsizei stride,
const GLvoid *pointer )
PARAMETERS
size Specifies the number of components per color. Must be 3 or 4.
type Specifies the data type of each color component in the array.
Symbolic constants GL_BYTE, GL_UNSIGNED_BYTE, GL_SHORT,
GL_UNSIGNED_SHORT, GL_INT, GL_UNSIGNED_INT, GL_FLOAT, and
GL_DOUBLE are accepted.
stride Specifies the byte offset between consecutive colors. If
stride is 0, (the initial value), the colors are understood to
be tightly packed in the array.
pointer Specifies a pointer to the first component of the first color
element in the array.
DESCRIPTION
glColorPointer specifies the location and data format of an array of
color components to use when rendering. size specifies the number of
components per color, and must be 3 or 4. type specifies the data type
of each color component, and stride specifies the byte stride from one
color to the next allowing vertexes and attributes to be packed into a
single array or stored in separate arrays. (Single-array storage may
be more efficient on some implementations; see glInterleavedArrays.)
When a color array is specified, size, type, stride, and pointer are
saved as client-side state.
To enable and disable the color array, call glEnableClientState and
glDisableClientState with the argument GL_COLOR_ARRAY. If enabled, the
color array is used when glDrawArrays, glDrawElements, or glArrayEle‐
ment is called.
NOTES
glColorPointer is available only if the GL version is 1.1 or greater.
The color array is initially disabled and isn't accessed when glAr‐
rayElement, glDrawArrays, or glDrawElements is called.
Execution of glColorPointer is not allowed between the execution of
glBegin and the corresponding execution of glEnd, but an error may or
may not be generated. If no error is generated, the operation is unde‐
fined.
glColorPointer is typically implemented on the client side.
Color array parameters are client-side state and are therefore not
saved or restored by glPushAttrib and glPopAttrib. Use glPushClientAt‐
trib and glPopClientAttrib instead.
ERRORS
GL_INVALID_VALUE is generated if size is not 3 or 4.
GL_INVALID_ENUM is generated if type is not an accepted value.
GL_INVALID_VALUE is generated if stride is negative.
ASSOCIATED GETS
glIsEnabled with argument GL_COLOR_ARRAY
glGet with argument GL_COLOR_ARRAY_SIZE
glGet with argument GL_COLOR_ARRAY_TYPE
glGet with argument GL_COLOR_ARRAY_STRIDE
glGetPointerv with argument GL_COLOR_ARRAY_POINTER
SEE ALSO
glArrayElement, glDrawArrays, glDrawElements, glEdgeFlagPointer,
glEnable, glGetPointerv, glIndexPointer, glInterleavedArrays, glNormal‐
Pointer, glPopClientAttrib, glPushClientAttrib, glTexCoordPointer,
glVertexPointer
15 Mar 97 GLCOLORPOINTER(3gl)