PARAMETERS
       texture  Specifies which texture unit to make active. The number of tex‐
                ture units is implementation dependent, but must  be  at  least
                two.  texture  must  be  one  of  GL_TEXTUREi_ARB where 0 ≤ i <
                GL_MAX_TEXTURE_UNITS_ARB, which is an  implementation-dependent
                value.  The initial value is GL_TEXTURE0_ARB.

DESCRIPTION
       glClientActiveTextureARB  selects  the vertex array client state parame‐
       ters to be modified by glTexCoordPointer, and enabled or  disabled  with
       glEnableClientState  or  glDisableClientState, respectively, when called
       with a parameter of GL_TEXTURE_COORD_ARRAY.

NOTES
       glClientActiveTextureARB is supported only if GL_ARB_multitexture is in‐
       cluded  in the string returned by glGetString when called with the argu‐
       ment GL_EXTENSIONS.

       glClientActiveTextureARB sets GL_CLIENT_ACTIVE_TEXTURE_ARB to the active
       texture unit.

ERRORS
       GL_INVALID_ENUM  is  generated if texture is not one of GL_TEXTUREi_ARB,
       where 0 ≤ i < GL_MAX_TEXTURE_UNITS_ARB.

SEE ALSO
       glActiveTextureARB,      glDisableClientState,      glEnableClientState,
       glMultiTexCoordARB, glTexCoordPointer

                                                   GLCLIENTACTIVETEXTUREARB(3G)