void glIndexPointer(GLenum type, GLsizei stride, const GLvoid *pointer)
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. |
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. |
pointer | Specifies a pointer to the first index in the array. |
type, stride, and pointer 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 attribute arrays. Use glArrayElement to specify primitives by indexing vertexes and vertex attributes and glDrawElements to construct a sequence of primitives by indexing vertexes and vertex attributes.
The color index array is initially disabled, and it is not 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_VALUE is generated if stride is negative.