fglGetSharpenTexFuncSGIS(3G) OpenGL Reference fglGetSharpenTexFuncSGIS(3G)NAMEfglGetSharpenTexFuncSGIS - 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.
DESCRIPTIONfglGetSharpenTexFuncSGIS 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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