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GLUSCALEIMAGE()						       GLUSCALEIMAGE()

NAME
       gluScaleImage - scale an	image to an arbitrary size

C SPECIFICATION
       GLint gluScaleImage( GLenum format,
			    GLsizei wIn,
			    GLsizei hIn,
			    GLenum typeIn,
			    const void *dataIn,
			    GLsizei wOut,
			    GLsizei hOut,
			    GLenum typeOut,
			    GLvoid* dataOut )

       delim $$

PARAMETERS
       format	Specifies  the	format	of the pixel data.  The	following sym-
		bolic  values  are  valid:  GL_COLOR_INDEX,  GL_STENCIL_INDEX,
		GL_DEPTH_COMPONENT,   GL_RED,	GL_GREEN,  GL_BLUE,  GL_ALPHA,
		GL_RGB,	GL_RGBA, GL_LUMINANCE, and GL_LUMINANCE_ALPHA.

       wIn, hIn	Specify	the width and height, respectively, of the source  im-
		age that is scaled.

       typeIn	Specifies  the	data  type  for	 dataIn. Must be one of	GL_UN-
		SIGNED_BYTE, GL_BYTE, GL_BITMAP, GL_UNSIGNED_SHORT,  GL_SHORT,
		GL_UNSIGNED_INT, GL_INT, or GL_FLOAT.

       dataIn	Specifies a pointer to the source image.

       wOut, hOut
		Specify	the width and height, respectively, of the destination
		image.

       typeOut	Specifies  the	data  type  for	dataOut. Must be one of	GL_UN-
		SIGNED_BYTE, GL_BYTE, GL_BITMAP, GL_UNSIGNED_SHORT,  GL_SHORT,
		GL_UNSIGNED_INT, GL_INT, or GL_FLOAT.

       dataOut	Specifies a pointer to the destination image.

DESCRIPTION
       gluScaleImage  scales  a	 pixel image using the appropriate pixel store
       modes to	unpack data from the source image and pack data	into the  des-
       tination	image.

       When  shrinking an image, gluScaleImage uses a box filter to sample the
       source image and	create pixels for the destination image. When magnify-
       ing an image, the pixels	from the source	image  are  linearly  interpo-
       lated to	create the destination image.

       A  return  value	 of 0 indicates	success, otherwise a GLU error code is
       returned	(see gluErrorString).

       See the glReadPixels reference page for a description of	the acceptable
       values for format, typeIn, and typeOut.

ERRORS
       GLU_INVALID_VALUE is returned if	wIn, hIn, wOut,	or hOut	are < 0.

       GLU_INVALID_ENUM	is returned if format, typeIn, or typeOut are not  le-
       gal.

SEE ALSO
       glDrawPixels,   glReadPixels,   gluBuild1DMipmaps,   gluBuild2DMipmaps,
       gluErrorString

							       GLUSCALEIMAGE()

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