glGetTexLevelParameterfv, glGetTexLevelParameteriv - return
texture parameter values for a specific level	of detail

glGetTexLevelParameterfv
	glGetTexLevelParameterfv(target, level, pname) -> params
glGetTexLevelParameteriv
	glGetTexLevelParameteriv(target, level, pname) -> params

void glGetTexLevelParameterfv( GLenum	target,
                               GLint level,
                               GLenum	pname,
                               GLfloat *params )
void glGetTexLevelParameteriv( GLenum	target,
                               GLint level,
                               GLenum	pname,
                               GLint *params )

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

level	  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.

pname	  Specifies the	symbolic name of a texture parameter.
        GL_TEXTURE_WIDTH, GL_TEXTURE_HEIGHT,
        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.

params  Returns the requested	data.

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

GL_MAX_TEXTURE_SIZE is not really descriptive	enough.	 It
has to report	the largest square texture image that can be
accommodated with mipmaps and	borders, but a long skinny
texture, or a	texture	without	mipmaps	and borders, may
easily fit in	texture	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
texture can be accommodated, the texture state values	will
be set as they would be set for a non-proxy target.

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

The accepted parameter names are as follows:

GL_TEXTURE_WIDTH
          params returns a single value, the width of	the
          texture image.  This value includes	the border of
          the	texture	image. The initial value is 0.

GL_TEXTURE_HEIGHT
          params returns a single value, the height of the
          texture image.  This value includes	the border of
          the	texture	image. The initial value is 0.

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

GL_TEXTURE_BORDER
          params 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 or glTexImage2D. The initial value is
          0.

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

GL_TEXTURE_INTERNAL_FORMAT is	only available 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 only
available if the GL version is 1.1 or	greater.

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

GL_INVALID_VALUE is generated	if level is less than 0.

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

GL_INVALID_OPERATION is generated if glGetTexLevelParameter
is executed between the execution of glBegin and the
corresponding	execution of glEnd.

glGetTexParameter, glCopyTexImage1D, glCopyTexImage2D,
glCopyTexSubImage1D, glCopyTexSubImage2D, glTexEnv,
glTexGen, glTexImage1D, glTexImage2D,	glTexSubImage1D,
glTexSubImage2D,
glTexParameter