fglGetHistogramParameterEXT(3G) OpenGL Reference
NAME
fglGetHistogramParameterfvEXT, fglGetHistogramParameterivEXT - get
histogram parameters
FORTRAN SPECIFICATION
SUBROUTINE fglGetHistogramParameterfvEXT( INTEGER*4 target,
INTEGER*4 pname,
CHARACTER*8 params )
SUBROUTINE fglGetHistogramParameterivEXT( INTEGER*4 target,
INTEGER*4 pname,
CHARACTER*8 params )
PARAMETERS
target Must be one of GL_HISTOGRAM_EXT or GL_PROXY_HISTOGRAM_EXT.
pname The name of the parameter to be retrieved. Must be one of
GL_HISTOGRAM_WIDTH_EXT, GL_HISTOGRAM_FORMAT_EXT,
GL_HISTOGRAM_RED_SIZE_EXT, GL_HISTOGRAM_GREEN_SIZE_EXT,
GL_HISTOGRAM_BLUE_SIZE_EXT, GL_HISTOGRAM_ALPHA_SIZE_EXT,
GL_HISTOGRAM_LUMINANCE_SIZE_EXT, or GL_HISTOGRAM_SINK_EXT.
params Pointer to storage for the returned values.
DESCRIPTION
fglGetHistogramParameterEXT is used to query parameter values for the
current histogram or for a proxy. For a detailed description of the
parameters, see fglHistogramEXT.
ERRORS
GL_INVALID_ENUM is generated if target is not one of the allowable
values.
GL_INVALID_ENUM is generated if pname is not one of the allowable values.
GL_INVALID_OPERATION is generated if fglGetHistogramParameterEXT is
executed between the execution of fglBegin and the corresponding
execution of fglEnd.
SEE ALSO
fglHistogramEXT
Page 1