|
glColorPointer(3G)
Contents
|
glColorPointer - define an array of colors
void glColorPointer(
GLint size,
GLenum type,
GLsizei stride,
const GLvoid *pointer );
Specifies the number of components per color. Must be 3 or
4. The initial value is 4. 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. The initial value is GL_FLOAT. 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. The initial value is 0.
Specifies a pointer to the first component of the first
color element in the array.
glColorPointer() specifies the location and data 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. (Singlearray
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(), glDrawRangeElements(),
or glArrayElement() is called.
glColorPointer() is available only if the GL version is
1.1 or greater.
The color array is initially disabled and isn't accessed
when glArrayElement(), glDrawArrays(), glDrawRangeElements(),
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 undefined.
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 glPushClientAttrib() and
glPopClientAttrib() instead.
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.
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
glArrayElement(3), glDrawArrays(3), glDrawElements(3),
glEdgeFlagPointer(3), glEnable(3), glGetPointerv(3), glIndexPointer(3), glInterleavedArrays(3), glNormalPointer(3),
glPopClientAttrib(3) , glPushClientAttrib(3) , glTexCoordPointer(3), glVertexPointer(3)
glColorPointer(3G)
[ Back ] |