NAME
fglTexCoordPointer - define an array of texture coordinates
FORTRAN SPECIFICATION
SUBROUTINE fglTexCoordPointer( INTEGER*4 size,
INTEGER*4 type,
INTEGER*4 stride,
CHARACTER*8 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
fglTexCoordPointer 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
fglInterleavedArrays.) 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
fglEnableClientState and fglDisableClientState with the
argument GL_TEXTURE_COORD_ARRAY. If enabled, the texture
coordinate array is used when fglDrawArrays, fglDrawElements
or
fglArrayElement is called.
Use fglDrawArrays to construct a sequence of primitives (all
of the same type) from prespecified vertex and vertex
attribute arrays. Use fglArrayElement to specify primitives
by indexing vertexes and vertex attributes and
fglDrawElements to construct a sequence of primitives by
indexing vertexes and vertex attributes.
NOTES
fglTexCoordPointer 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
fglArrayElement, fglDrawElements or fglDrawArrays is called.
Execution of fglTexCoordPointer is not allowed between the
execution of fglBegin and the corresponding execution of
fglEnd, but an error may or may not be generated. If no
error is generated, the operation is undefined.
fglTexCoordPointer 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
fglPushAttrib and fglPopAttrib. Use fglPushClientAttrib and
fglPopClientAttrib 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
fglIsEnabled with argument GL_TEXTURE_COORD_ARRAY
fglGet with argument GL_TEXTURE_COORD_ARRAY_SIZE
fglGet with argument GL_TEXTURE_COORD_ARRAY_TYPE
fglGetPointerv with argument GL_TEXTURE_COORD_ARRAY_POINTER
SEE ALSO
fglArrayElement, fglColorPointer, fglDrawArrays,
fglDrawElements,
fglEdgeFlagPointer, fglEnable, fglGetPointerv,
fglIndexPointer, fglNormalPointer, fglPopClientAttrib,
fglPushClientAttrib, fglTexCoord, fglVertexPointer