fglGetSharpenTexFuncSGIS man page on IRIX

fglGetSharpenTexFuncSGIS man page on IRIX

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fglGetSharpenTexFuncSGIS(3G)   OpenGL Reference	  fglGetSharpenTexFuncSGIS(3G)

NAME
     fglGetSharpenTexFuncSGIS - get sharpen texture scaling function

FORTRAN SPECIFICATION
     SUBROUTINE fglGetSharpenTexFuncSGIS( INTEGER*4 target,
					  CHARACTER*8 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
     fglGetSharpenTexFuncSGIS retrieves the sharpen texture scaling function
     samples specified by fglSharpenTexFuncSGIS.  See fglSharpenTexFuncSGIS
     for a discussion of sharpen texturing.

NOTES
     The number of elements in points may be queried by calling
     fglGetTexParameter 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 fglGetSharpenTexFuncSGIS is executed
     between the execution of fglBegin and the corresponding execution of
     fglEnd.

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

SEE ALSO
     fglSharpenTexFuncSGIS.

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