glTexCoordPointer — define an array of texture coordinates
void glTexCoordPointer( | GLint | size, |
GLenum | type, | |
GLsizei | stride, | |
const GLvoid * | pointer) ; |
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.
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.
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.
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.
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
glArrayElement, glBindBuffer, glClientActiveTexture, glColorPointer, glDisableClientState, glDrawArrays, glDrawElements, glDrawRangeElements, glEdgeFlagPointer, glEnableClientState, glFogCoordPointer, glIndexPointer, glInterleavedArrays, glMultiDrawArrays, glMultiDrawElements, glMultiTexCoord, glNormalPointer, glPopClientAttrib, glPushClientAttrib, glSecondaryColorPointer, glTexCoord, glVertexAttribPointer, glVertexPointer
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/.