glGetPointerv — return the address of the specified pointer
void glGetPointerv( | GLenum | pname, |
GLvoid ** | params) ; |
pname
Specifies the array or buffer pointer to be returned.
Symbolic constants
GL_COLOR_ARRAY_POINTER
,
GL_EDGE_FLAG_ARRAY_POINTER
,
GL_FOG_COORD_ARRAY_POINTER
,
GL_FEEDBACK_BUFFER_POINTER
,
GL_INDEX_ARRAY_POINTER
,
GL_NORMAL_ARRAY_POINTER
,
GL_SECONDARY_COLOR_ARRAY_POINTER
,
GL_SELECTION_BUFFER_POINTER
,
GL_TEXTURE_COORD_ARRAY_POINTER
,
or
GL_VERTEX_ARRAY_POINTER
are accepted.
params
Returns the pointer value specified by pname
.
glGetPointerv
returns pointer information. pname
is a symbolic constant
indicating the pointer to be returned, and params
is a pointer to a
location in which to place the returned data.
For all pname
arguments except GL_FEEDBACK_BUFFER_POINTER
and GL_SELECTION_BUFFER_POINTER
,
if a non-zero named buffer object was bound to the GL_ARRAY_BUFFER
target
(see glBindBuffer) when the desired pointer was previously
specified, the pointer returned is a byte offset into the buffer object's data store.
Buffer objects are only available in OpenGL versions 1.5 and greater.
glGetPointerv
is available only if the GL version is 1.1 or greater.
GL_FOG_COORD_ARRAY_POINTER
and GL_SECONDARY_COLOR_ARRAY_POINTER
are available only if the GL version is 1.4 or greater.
The pointers are all client-side state.
The initial value for each pointer is 0.
For OpenGL versions 1.3 and greater, or when the ARB_multitexture
extension is supported, querying the GL_TEXTURE_COORD_ARRAY_POINTER
returns the value for the active client texture unit.
glBindBuffer, glClientActiveTexture, glColorPointer, glEdgeFlagPointer, glFogCoordPointer, glFeedbackBuffer, glGetVertexAttribPointerv, glIndexPointer, glNormalPointer, glSecondaryColorPointer, glSelectBuffer, glTexCoordPointer, glVertexAttribPointer, glVertexPointer
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.