DragonFly On-Line Manual Pages

Search: Section:  

GLTEXCOORDPOINTER()                                        GLTEXCOORDPOINTER()


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 array elements.
                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
                element in the array.


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 element, 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 array element to the next allowing vertexes 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.)  When a texture coordinate array is specified,
       size, type, stride, and pointer are saved client-side state.

       To enable and disable the texture coordinate array, call
       glEnableClientState and glDisableClientState with the argument
       GL_TEXTURE_COORD_ARRAY. If enabled, the texture coordinate 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.


NOTES

       glTexCoordPointer is available only if the GL version is 1.1 or
       greater.

       The texture coordinate array is initially disabled and it won't be
       accessed when
       glArrayElement, glDrawElements or glDrawArrays 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 with no
       protocol.

       The 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
       glGetPointerv with argument GL_TEXTURE_COORD_ARRAY_POINTER


SEE ALSO

       glArrayElement, glColorPointer, glDrawArrays, glDrawElements,
       glEdgeFlagPointer, glEnable, glGetPointerv, glIndexPointer,
       glNormalPointer, glPopClientAttrib, glPushClientAttrib, glTexCoord,
       glVertexPointer

                                                           GLTEXCOORDPOINTER()

Search: Section: