x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
GLTEXCOORDPOINTER(3G) GLTEXCOORDPOINTER(3G)
NAME
glTexCoordPointer - define an array of texture coordinates
C SPECIFICATION
void glTexCoordPointer( GLint size,
GLenum type,
GLsizei stride,
const GLvoid *ptr )
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 ac-
cepted. 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.
ptr Specifies a pointer to the first coordinate of the first ele-
ment in the array. The initial value is 0.
DESCRIPTION
glTexCoordPointer specifies the location and data of an array of tex-
ture 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 vertices and at-
tributes 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 ptr 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, glDrawRangeElements 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 vertices and vertex
attributes and glDrawElements to construct a sequence of primitives by
indexing vertices 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 ac-
cessed when glArrayElement, glDrawElements, glDrawRangeElements, 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 unde-
fined.
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.
When the GL_ARB_imaging extension is supported, glTexCoordPointer up-
dates the texture coordinate array state of the active client texture
unit, specified with glClientActiveTextureARB.
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(3G), glClientActiveTextureARB(3G), glColorPointer(3G),
glDrawArrays(3G), glDrawElements(3G), glDrawRangeElements(3G),
glEdgeFlagPointer(3G), glEnable(3G), glGetPointerv(3G),
glIndexPointer(3G), glNormalPointer(3G), glPopClientAttrib(3G),
glPushClientAttrib(3G), glTexCoord(3G), glVertexPointer(3G)
GLTEXCOORDPOINTER(3G)
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