GLINDEXPOINTER(3G) UNIX Programmer's Manual GLINDEXPOINTER(3G)
glIndexPointer - define an array of color indexes
void glIndexPointer( GLenum type,
GLsizei stride,
const GLvoid *ptr )
type Specifies the data type of each color index in the
array. Symbolic constants GL_UNSIGNED_BYTE,
GL_SHORT, GL_INT, GL_FLOAT, and GL_DOUBLE are
accepted. The initial value is GL_FLOAT.
stride Specifies the byte offset between consecutive color
indexes. If stride is 0 (the initial value), the
color indexes are understood to be tightly packed in
the array. The initial value is 0.
ptr Specifies a pointer to the first index in the array.
The initial value is 0.
glIndexPointer specifies the location and data of an array
of color indexes to use when rendering. type specifies the
data type of each color index and stride gives the byte
stride from one color index to the next allowing vertices
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.)
type, stride, and ptr are saved as client-side state.
The color index array is initially disabled. To enable and
disable the array, call glEnableClientState and
glDisableClientState with the argument GL_INDEX_ARRAY. If
enabled, the color index array is used when glDrawArrays,
glDrawElements or glArrayElement is called.
Use glDrawArrays to construct a sequence of primitives (all
of the same type) from prespecified vertex and vertex attri-
bute arrays. Use glArrayElement to specify primitives by
indexing vertices and vertex attributes and glDrawElements
to construct a sequence of primitives by indexing vertices
and vertex attributes.
glIndexPointer is available only if the GL version is 1.1 or
greater.
MirOS BSD #10-current Printed 20.2.2012 1
GLINDEXPOINTER(3G) UNIX Programmer's Manual GLINDEXPOINTER(3G)
The color index array is initially disabled, and it isn't
accessed when glArrayElement, glDrawElements, or
glDrawArrays is called.
Execution of glIndexPointer is not allowed between glBegin
and the corresponding glEnd, but an error may or may not be
generated. If an error is not generated, the operation is
undefined.
glIndexPointer is typically implemented on the client side.
Since the color index array parameters are client-side
state, they are not saved or restored by glPushAttrib and
glPopAttrib. Use glPushClientAttrib and glPopClientAttrib
instead.
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_INDEX_ARRAY
glGet with argument GL_INDEX_ARRAY_TYPE
glGet with argument GL_INDEX_ARRAY_STRIDE
glGetPointerv with argument GL_INDEX_ARRAY_POINTER
glArrayElement(3G), glColorPointer(3G), glDrawArrays(3G),
glDrawElements(3G), glEdgeFlagPointer(3G), glEnable(3G),
glGetPointerv(3G), glInterleavedArrays(3G),
glNormalPointer(3G), glPopClientAttrib(3G),
glPushClientAttrib(3G), glTexCoordPointer(3G),
glVertexPointer(3G)
MirOS BSD #10-current Printed 20.2.2012 2
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