glTexCoordPointer man page on RedHat
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GLTEXCOORDPOINTER(3G) OpenGL Manual GLTEXCOORDPOINTER(3G)
NAME
glTexCoordPointer - define an array of texture coordinates
C SPECIFICATION
void glTexCoordPointer(GLint size, GLenum type, GLsizei stride,
const GLvoid * pointer);
PARAMETERS
size
Specifies the number of coordinates per array element. Must be 1,
2, 3, or 4. The initial value is 4.
type
Specifies the data type of each texture coordinate. Symbolic
constants GL_SHORT, GL_INT, GL_FLOAT, or GL_DOUBLE are accepted.
The initial value is GL_FLOAT.
stride
Specifies the byte offset between consecutive texture coordinate
sets. If stride is 0, the array elements are understood to be
tightly packed. The initial value is 0.
pointer
Specifies a pointer to the first coordinate of the first texture
coordinate set in the array. The initial value is 0.
DESCRIPTION
glTexCoordPointer specifies the location and data format of an array of
texture coordinates to use when rendering. size specifies the number
of coordinates per texture coordinate set, and must be 1, 2, 3, or 4.
type specifies the data type of each texture coordinate, and stride
specifies the byte stride from one texture coordinate set 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().)
If a non-zero named buffer object is bound to the GL_ARRAY_BUFFER
target (see glBindBuffer()) while a texture coordinate array is
specified, pointer is treated as a byte offset into the buffer object's
data store. Also, the buffer object binding (GL_ARRAY_BUFFER_BINDING)
is saved as texture coordinate vertex array client-side state
(GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING).
When a texture coordinate array is specified, size, type, stride, and
pointer are saved as client-side state, in addition to the current
vertex array buffer object binding.
To enable and disable a texture coordinate array, call
glEnableClientState() and glDisableClientState() with the argument
GL_TEXTURE_COORD_ARRAY. If enabled, the texture coordinate array is
used when glArrayElement(), glDrawArrays(), glMultiDrawArrays(),
glDrawElements(), glMultiDrawElements(), or glDrawRangeElements() is
called.
NOTES
glTexCoordPointer is available only if the GL version is 1.1 or
greater.
For OpenGL versions 1.3 and greater, or when the ARB_multitexture
extension is supported, glTexCoordPointer updates the texture
coordinate array state of the active client texture unit, specified
with glClientActiveTexture().
Each texture coordinate array is initially disabled and isn't accessed
when glArrayElement(), glDrawElements(), glDrawRangeElements(),
glDrawArrays(), glMultiDrawArrays(), or glMultiDrawElements() is
called.
Execution of glTexCoordPointer 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.
glTexCoordPointer is typically implemented on the client side.
Texture coordinate array parameters are client-side state and are
therefore not saved or restored by glPushAttrib() and glPopAttrib().
Use glPushClientAttrib() and glPopClientAttrib() instead.
ERRORS
GL_INVALID_VALUE is generated if size is not 1, 2, 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_TEXTURE_COORD_ARRAY
glGet() with argument GL_TEXTURE_COORD_ARRAY_SIZE
glGet() with argument GL_TEXTURE_COORD_ARRAY_TYPE
glGet() with argument GL_TEXTURE_COORD_ARRAY_STRIDE
glGet() with argument GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING
glGet() with argument GL_ARRAY_BUFFER_BINDING
glGetPointerv() with argument GL_TEXTURE_COORD_ARRAY_POINTER
SEE ALSO
glArrayElement(), glBindBuffer(), glClientActiveTexture(),
glColorPointer(), glDisableClientState(), glDrawArrays(),
glDrawElements(), glDrawRangeElements(), glEdgeFlagPointer(),
glEnableClientState(), glFogCoordPointer(), glIndexPointer(),
glInterleavedArrays(), glMultiDrawArrays(), glMultiDrawElements(),
glMultiTexCoord(), glNormalPointer(), glPopClientAttrib(),
glPushClientAttrib(), glSecondaryColorPointer(), glTexCoord(),
glVertexAttribPointer(), glVertexPointer()
COPYRIGHT
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/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLTEXCOORDPOINTER(3G)
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