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 (C) 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 06/10/2014 GLTEXCOORDPOINTER(3G)