C SPECIFICATION

       void GLAPIENTRY glGetTexLevelParameterfv( GLenum target,
                                                 GLint leve )
       void GLAPIENTRY glGetTexLevelParameteriv( GLenum target,
                                                 GLint leve )

PARAMETERS

       target  Specifies the symbolic  name  of  the  target  texture,  either
               GL_TEXTURE_1D,           GL_TEXTURE_2D,          GL_TEXTURE_3D,
               GL_PROXY_TEXTURE_1D,          GL_PROXY_TEXTURE_2D,           or
               GL_PROXY_TEXTURE_3D.

       leve    Specifies  the  level-of-detail  number  of  the desired image.
               Level 0 is the base image level.  Level n  is  the  nth  mipmap
               reduction image.

       _param3 Specifies   the   symbolic   name   of   a  texture  parameter.
               GL_TEXTURE_WIDTH,     GL_TEXTURE_HEIGHT,      GL_TEXTURE_DEPTH,
               GL_TEXTURE_INTERNAL_FORMAT,                  GL_TEXTURE_BORDER,
               GL_TEXTURE_RED_SIZE,                     GL_TEXTURE_GREEN_SIZE,
               GL_TEXTURE_BLUE_SIZE,                    GL_TEXTURE_ALPHA_SIZE,
               GL_TEXTURE_LUMINANCE_SIZE,  and  GL_TEXTURE_INTENSITY_SIZE  are
               accepted.

       _param4 Returns the requested data.

DESCRIPTION

       glGetTexLevelParameter  returns in _param4 texture parameter values for
       a specific level-of-detail value, specified as  leve.   target  defines
       the target texture, either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D,
       GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D, or GL_PROXY_TEXTURE_3D.

       GL_MAX_TEXTURE_SIZE, and GL_MAX_3D_TEXTURE_SIZE are not really descrip-
       tive  enough.   It  has to report the largest square texture image that
       can be accommodated with mipmaps and borders, but a  long  skinny  tex-
       ture,  or a texture without mipmaps and borders, may easily fit in tex-
       ture memory.  The proxy targets allow the user to more accurately query
       whether  the GL can accommodate a texture of a given configuration.  If
       the texture cannot be accommodated, the texture state variables,  which
       may  be queried with glGetTexLevelParameter, are set to 0.  If the tex-
       ture can be accommodated, the texture state values will be set as  they
       would be set for a non-proxy target.

       _param3  specifies  the texture parameter whose value or values will be
       returned.

       The accepted parameter names are as follows:

       GL_TEXTURE_WIDTH
       GL_TEXTURE_INTERNAL_FORMAT
                 _param4 returns a single value, the internal  format  of  the
                 texture image.

       GL_TEXTURE_BORDER
                 _param4  returns  a  single value, the width in pixels of the
                 border of the texture image. The initial value is 0.

       GL_TEXTURE_RED_SIZE,

       GL_TEXTURE_GREEN_SIZE,

       GL_TEXTURE_BLUE_SIZE,

       GL_TEXTURE_ALPHA_SIZE,

       GL_TEXTURE_LUMINANCE_SIZE,

       GL_TEXTURE_INTENSITY_SIZE
                 The internal storage resolution of an  individual  component.
                 The resolution chosen by the GL will be a close match for the
                 resolution requested by the user with the component  argument
                 of       glTexImage1D,       glTexImage2D,      glTexImage3D,
                 glCopyTexImage1D, and glCopyTexImage2D. The initial value  is
                 0.

NOTES

       If an error is generated, no change is made to the contents of _param4.

       GL_TEXTURE_INTERNAL_FORMAT is available only if the GL version  is  1.1
       or greater. In version 1.0, use GL_TEXTURE_COMPONENTS instead.

       GL_PROXY_TEXTURE_1D  and  GL_PROXY_TEXTURE_2D are available only if the
       GL version is 1.1 or greater.

       GL_TEXTURE_3D, GL_PROXY_TEXTURE_3D, and GL_TEXTURE_DEPTH are  available
       only if the GL version is 1.2 or greater.

       When     the     GL_ARB_multitexture     extension     is    supported,
       glGetTexLevelParameter returns the texture  level  parameters  for  the
       active texture unit.

ERRORS

       GL_INVALID_ENUM  is  generated  if target or _param3 is not an accepted
       value.

       GL_INVALID_VALUE is generated if leve is less than 0.

       GL_INVALID_VALUE may be generated if leve is  greater  than  log2  max,
       where max is the returned value of GL_MAX_TEXTURE_SIZE.

       GL_INVALID_OPERATION is generated if glGetTexLevelParameter is executed