Query: glgethistogramparameter
OS: centos
Section: 3g
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
GLGETHISTOGRAMPARAME(3G) OpenGL Manual GLGETHISTOGRAMPARAME(3G)NAMEglGetHistogramParameter - get histogram parametersC SPECIFICATIONvoid glGetHistogramParameterfv(GLenum target, GLenum pname, GLfloat * params); void glGetHistogramParameteriv(GLenum target, GLenum pname, GLint * params);PARAMETERStarget Must be one of GL_HISTOGRAM or GL_PROXY_HISTOGRAM. pname The name of the parameter to be retrieved. Must be one of GL_HISTOGRAM_WIDTH, GL_HISTOGRAM_FORMAT, GL_HISTOGRAM_RED_SIZE, GL_HISTOGRAM_GREEN_SIZE, GL_HISTOGRAM_BLUE_SIZE, GL_HISTOGRAM_ALPHA_SIZE, GL_HISTOGRAM_LUMINANCE_SIZE, or GL_HISTOGRAM_SINK. params Pointer to storage for the returned values.DESCRIPTIONglGetHistogramParameter is used to query parameter values for the current histogram or for a proxy. The histogram state information may be queried by calling glGetHistogramParameter with a target of GL_HISTOGRAM (to obtain information for the current histogram table) or GL_PROXY_HISTOGRAM (to obtain information from the most recent proxy request) and one of the following values for the pname argument: +----------------------------------+-------------------------------------------+ | | | | Parameter | Description | | | | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_WIDTH | Histogram table width | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_FORMAT | Internal format | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_RED_SIZE | Red component counter size, in bits | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_GREEN_SIZE | Green component counter size, in bits | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_BLUE_SIZE | Blue component counter size, in bits | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_ALPHA_SIZE | Alpha component counter size, in bits | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_LUMINANCE_SIZE | Luminance component counter size, in bits | +----------------------------------+-------------------------------------------+ |GL_HISTOGRAM_SINK | Value of the sink parameter | +----------------------------------+-------------------------------------------+NOTESglGetHistogramParameter is present only if ARB_imaging is returned when glGetString() is called with an argument of GL_EXTENSIONS.ERRORSGL_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 glGetHistogramParameter is executed between the execution of glBegin() and the corresponding execution of glEnd().SEE ALSOglGetHistogram(), glHistogram()COPYRIGHTCopyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.AUTHORSopengl.org opengl.org 06/10/2014 GLGETHISTOGRAMPARAME(3G)
Related Man Pages |
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glgethistogramparameter(3g) - mojave |
glgetcolortableparameteriv(3g) - centos |
glgethistogram(3g) - centos |
glgetminmaxparameter(3g) - centos |
glhistogram(3g) - centos |
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