glGetSharpenTexFuncSGIS(3G)    OpenGL Reference	   glGetSharpenTexFuncSGIS(3G)



NAME
     glGetSharpenTexFuncSGIS - get sharpen texture scaling function


C SPECIFICATION
     void glGetSharpenTexFuncSGIS( GLenum target,
				   GLfloat *points )


PARAMETERS
     target  The texture whose sharpen texture scaling function	is to be
	     retrieved.	 Must be GL_TEXTURE_1D,	GL_TEXTURE_2D, or
	     GL_TEXTURE_3D_EXT.

     points  A pointer to a floating-point array which receives	the retrieved
	     scaling function.	Each pair of elements in the array receives an
	     LOD (level-of-detail) value and a scaling function	value.

DESCRIPTION
     glGetSharpenTexFuncSGIS retrieves the sharpen texture scaling function
     samples specified by glSharpenTexFuncSGIS.	 See glSharpenTexFuncSGIS for
     a discussion of sharpen texturing.

NOTES
     The number	of elements in points may be queried by	calling
     glGetTexParameter with target set to GL_TEXTURE_1D, GL_TEXTURE_2D,	or
     GL_TEXTURE_3D_EXT and pname set to	GL_SHARPEN_TEXTURE_FUNC_POINTS_SGIS.

ERRORS
     GL_INVALID_ENUM is	generated if target is not one of the allowable
     values.

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


MACHINE	DEPENDENCIES
     On	RealityEngine, RealityEngine2, and VTX systems sharpen texturing may
     not be used with 3D textures or when rendering to pixmaps.

     The default scaling function is incorrect on InfiniteReality systems.
     This will be fixed	in a future release.


SEE ALSO
     glSharpenTexFuncSGIS.








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