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<HTML><BODY><PRE>     <STRONG>NAME</STRONG>	  <STRONG>glGetBooleanv,</STRONG> <STRONG>glGetDoublev,</STRONG> <STRONG>glGetFloatv,</STRONG> <STRONG>glGetIntegerv</STRONG> -	  return the value or values of	a selected parameter     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>	  void <STRONG>glGetBooleanv</STRONG>( GLenum <EM>pname</EM>,			      GLboolean	*<EM>params</EM>	)     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>	  void <STRONG>glGetDoublev</STRONG>( GLenum <EM>pname</EM>,			     GLdouble *<EM>params</EM> )     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>	  void <STRONG>glGetFloatv</STRONG>( GLenum <EM>pname</EM>,			    GLfloat *<EM>params</EM> )     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>	  void <STRONG>glGetIntegerv</STRONG>( GLenum <EM>pname</EM>,			      GLint *<EM>params</EM> )     <STRONG>PARAMETERS</STRONG>	  <EM>pname</EM>	  Specifies the	parameter value	to be returned.	 The		  symbolic constants in	the list below are accepted.	  <EM>params</EM>  Returns the value or values of the specified		  parameter.     <STRONG>DESCRIPTION</STRONG>	  These	four commands return values for	simple state variables	  in GL. <EM>pname</EM> is a symbolic constant indicating the state	  variable to be returned, and <EM>params</EM> is a pointer to an array	  of the indicated type	in which to place the returned data.	  Type conversion is performed if <EM>params</EM> has a different type	  than the state variable value	being requested.  If	  <STRONG>glGetBooleanv</STRONG>	is called, a floating-point (or	integer) value	  is converted to <STRONG>GL_FALSE</STRONG> if and only if it is	0.0 (or	0).	  Otherwise, it	is converted to	<STRONG>GL_TRUE</STRONG>.  If <STRONG>glGetIntegerv</STRONG> is	  called, boolean values are returned as <STRONG>GL_TRUE</STRONG> or <STRONG>GL_FALSE</STRONG>,	  and most floating-point values are rounded to	the nearest	  integer value. Floating-point	colors and normals, however,	  are returned with a linear mapping that maps 1.0 to the most	  positive representable integer value,	and -1.0 to the	most	  negative representable integer value.	 If <STRONG>glGetFloatv</STRONG>	or	  <STRONG>glGetDoublev</STRONG> is called, boolean values are returned as	  <STRONG>GL_TRUE</STRONG> or <STRONG>GL_FALSE</STRONG>, and integer values are converted	to	  floating-point values.	  The following	symbolic constants are accepted	by <EM>pname</EM>:	  <STRONG>GL_ACCUM_ALPHA_BITS</STRONG>	   <EM>params</EM> returns one value, the				   number of alpha bitplanes in	the				   accumulation	buffer.	  <STRONG>GL_ACCUM_BLUE_BITS</STRONG>	   <EM>params</EM> returns one value, the				   number of blue bitplanes in the				   accumulation	buffer.	  <STRONG>GL_ACCUM_CLEAR_VALUE</STRONG>	   <EM>params</EM> returns four values:	the				   red,	green, blue, and alpha values				   used	to clear the accumulation				   buffer.  Integer values, if				   requested, are linearly mapped from				   the internal	floating-point				   representation such that 1.0				   returns the most positive				   representable integer value,	and				   -1.0	returns	the most negative				   representable integer value.	The				   initial value is (0,	0, 0, 0). See				   <STRONG>glClearAccum</STRONG>.	  <STRONG>GL_ACCUM_GREEN_BITS</STRONG>	   <EM>params</EM> returns one value, the				   number of green bitplanes in	the				   accumulation	buffer.	  <STRONG>GL_ACCUM_RED_BITS</STRONG>	   <EM>params</EM> returns one value, the				   number of red bitplanes in the				   accumulation	buffer.	  <STRONG>GL_ALPHA_BIAS</STRONG>		   <EM>params</EM> returns one value, the alpha				   bias	factor used during pixel				   transfers. The initial value	is 0.				   See <STRONG>glPixelTransfer</STRONG>.	  <STRONG>GL_ALPHA_BITS</STRONG>		   <EM>params</EM> returns one value, the				   number of alpha bitplanes in	each				   color buffer.	  <STRONG>GL_ALPHA_SCALE</STRONG>	   <EM>params</EM> returns one value, the alpha				   scale factor	used during pixel				   transfers. The initial value	is 1.				   See <STRONG>glPixelTransfer</STRONG>.	  <STRONG>GL_ALPHA_TEST</STRONG>		   <EM>params</EM> returns a single boolean				   value indicating whether alpha				   testing of fragments	is enabled.				   The initial value is	<STRONG>GL_FALSE</STRONG>. See				   <STRONG>glAlphaFunc</STRONG>.	  <STRONG>GL_ALPHA_TEST_FUNC</STRONG>	   <EM>params</EM> returns one value, the				   symbolic name of the	alpha test				   function. The initial value is				   <STRONG>GL_ALWAYS</STRONG>. See <STRONG>glAlphaFunc</STRONG>.	  <STRONG>GL_ALPHA_TEST_REF</STRONG>	   <EM>params</EM> returns one value, the				   reference value for the alpha test.				   The initial value is	0. See				   <STRONG>glAlphaFunc</STRONG>.	 An integer value, if				   requested, is linearly mapped from				   the internal	floating-point				   representation such that 1.0				   returns the most positive				   representable integer value,	and				   -1.0	returns	the most negative				   representable integer value.	  <STRONG>GL_ATTRIB_STACK_DEPTH</STRONG>	   <EM>params</EM> returns one value, the depth				   of the attribute stack.  If the				   stack is empty, 0 is	returned. The				   initial value is 0. See				   <STRONG>glPushAttrib</STRONG>.	  <STRONG>GL_AUTO_NORMAL</STRONG>	   <EM>params</EM> returns a single boolean				   value indicating whether 2D map				   evaluation automatically generates				   surface normals. The	initial	value				   is <STRONG>GL_FALSE</STRONG>.	See <STRONG>glMap2</STRONG>.	  <STRONG>GL_AUX_BUFFERS</STRONG>	   <EM>params</EM> returns one value, the				   number of auxiliary color buffers.				   The initial value is	0.	  <STRONG>GL_BLEND</STRONG>		   <EM>params</EM> returns a single boolean				   value indicating whether blending				   is enabled. The initial value is				   <STRONG>GL_FALSE</STRONG>. See <STRONG>glBlendFunc</STRONG>.	  <STRONG>GL_BLEND_COLOR_EXT</STRONG>	   <EM>params</EM> returns four values, the				   red,	green, blue, and alpha values				   which are the components of the				   blend color.	 See <STRONG>glBlendColorEXT</STRONG>.	  <STRONG>GL_BLEND_DST</STRONG>		   <EM>params</EM> returns one value, the				   symbolic constant identifying the				   destination blend function. The				   initial value is <STRONG>GL_ZERO</STRONG>. See				   <STRONG>glBlendFunc</STRONG>.	  <STRONG>GL_BLEND_EQUATION_EXT</STRONG>	   <EM>params</EM> returns one value, a				   symbolic constant indicating				   whether the blend equation is				   <STRONG>GL_FUNC_ADD_EXT</STRONG>, <STRONG>GL_MIN_EXT</STRONG> or				   <STRONG>GL_MAX_EXT</STRONG>. See <STRONG>glBlendEquationEXT</STRONG>.	  <STRONG>GL_BLEND_SRC</STRONG>		   <EM>params</EM> returns one value, the				   symbolic constant identifying the				   source blend	function. The initial				   value is <STRONG>GL_ONE</STRONG>. See	<STRONG>glBlendFunc</STRONG>.	  <STRONG>GL_BLUE_BIAS</STRONG>		   <EM>params</EM> returns one value, the blue				   bias	factor used during pixel				   transfers. The initial value	is 0.				   See <STRONG>glPixelTransfer</STRONG>.	  <STRONG>GL_BLUE_BITS</STRONG>		   <EM>params</EM> returns one value, the				   number of blue bitplanes in each				   color buffer.	  <STRONG>GL_BLUE_SCALE</STRONG>		   <EM>params</EM> returns one value, the blue				   scale factor	used during pixel				   transfers. The initial value	is 1.				   See <STRONG>glPixelTransfer</STRONG>.	  <STRONG>GL_CLIENT_ATTRIB_STACK_DEPTH</STRONG>				   <EM>params</EM> returns one value indicating				   the depth of	the attribute stack.				   The initial value is	0.  See				   <STRONG>glPushClientAttrib</STRONG>.	  <STRONG>GL_CLIP_PLANE</STRONG><EM>i</EM>	   <EM>params</EM> returns a single boolean				   value indicating whether the				   specified clipping plane is				   enabled. The	initial	value is				   <STRONG>GL_FALSE</STRONG>. See <STRONG>glClipPlane</STRONG>.	  <STRONG>GL_COLOR_ARRAY</STRONG>	   <EM>params</EM> returns a single boolean				   value indicating whether the	color				   array is enabled. The initial value				   is <STRONG>GL_FALSE</STRONG>.	See <STRONG>glColorPointer</STRONG>.	  <STRONG>GL_COLOR_ARRAY_SIZE</STRONG>	   <EM>params</EM> returns one value, the				   number of components	per color in				   the color array. The	initial	value				   is 4. See <STRONG>glColorPointer</STRONG>.	  <STRONG>GL_COLOR_ARRAY_STRIDE</STRONG>	   <EM>params</EM> returns one value, the byte				   offset between consecutive colors				   in the color	array. The initial				   value is 0. See <STRONG>glColorPointer</STRONG>.	  <STRONG>GL_COLOR_ARRAY_TYPE</STRONG>	   <EM>params</EM> returns one value, the data				   type	of each	component in the color				   array. The initial value is				   <STRONG>GL_FLOAT</STRONG>. See <STRONG>glColorPointer</STRONG>.	  <STRONG>GL_COLOR_CLEAR_VALUE</STRONG>	   <EM>params</EM> returns four values:	the				   red,	green, blue, and alpha values				   used	to clear the color buffers.				   Integer values, if requested, are				   linearly mapped from	the internal				   floating-point representation such				   that	1.0 returns the	most positive				   representable integer value,	and				   -1.0	returns	the most negative				   representable integer value.	The				   initial value is (0,	0, 0, 0). See				   <STRONG>glClearColor</STRONG>.	  <STRONG>GL_COLOR_LOGIC_OP</STRONG>	   <EM>params</EM> returns a single boolean				   value indicating whether a				   fragment's RGBA color values	are				   merged into the framebuffer using a				   logical operation. The initial				   value is <STRONG>GL_FALSE</STRONG>.  See <STRONG>glLogicOp</STRONG>.	  <STRONG>GL_COLOR_MATERIAL</STRONG>	   <EM>params</EM> returns a single boolean				   value indicating whether one	or				   more	material parameters are				   tracking the	current	color. The				   initial value is <STRONG>GL_FALSE</STRONG>. See				   <STRONG>glColorMaterial</STRONG>.	  <STRONG>GL_COLOR_MATERIAL_FACE</STRONG>   <EM>params</EM> returns one value, a				   symbolic constant indicating	which				   materials have a parameter that is				   tracking the	current	color. The				   initial value is <STRONG>GL_FRONT_AND_BACK</STRONG>.				   See <STRONG>glColorMaterial</STRONG>.	  <STRONG>GL_COLOR_MATERIAL_PARAMETER</STRONG>				   <EM>params</EM> returns one value, a				   symbolic constant indicating	which				   material parameters are tracking				   the current color. The initial				   value is <STRONG>GL_AMBIENT_AND_DIFFUSE</STRONG>.				   See <STRONG>glColorMaterial</STRONG>.	  <STRONG>GL_COLOR_WRITEMASK</STRONG>	   <EM>params</EM> returns four boolean values:				   the red, green, blue, and alpha				   write enables for the color				   buffers. The	initial	value is				   (<STRONG>GL_TRUE</STRONG>, <STRONG>GL_TRUE</STRONG>, <STRONG>GL_TRUE</STRONG>,				   <STRONG>GL_TRUE</STRONG>). See <STRONG>glColorMask</STRONG>.	  <STRONG>GL_CULL_FACE</STRONG>		   <EM>params</EM> returns a single boolean				   value indicating whether polygon				   culling is enabled. The initial				   value is <STRONG>GL_FALSE</STRONG>. See <STRONG>glCullFace</STRONG>.	  <STRONG>GL_CULL_FACE_MODE</STRONG>	   <EM>params</EM> returns one value, a				   symbolic constant indicating	which				   polygon faces are to	be culled. The				   initial value is <STRONG>GL_BACK</STRONG>. See				   <STRONG>glCullFace</STRONG>.	  <STRONG>GL_CURRENT_COLOR</STRONG>	   <EM>params</EM> returns four values:	the				   red,	green, blue, and alpha values				   of the current color.  Integer				   values, if requested, are linearly				   mapped from the internal floating-				   point representation	such that 1.0				   returns the most positive				   representable integer value,	and				   -1.0	returns	the most negative				   representable integer value.	 See				   <STRONG>glColor</STRONG>. The	initial	value is (1,				   1, 1, 1).	  <STRONG>GL_CURRENT_INDEX</STRONG>	   <EM>params</EM> returns one value, the				   current color index.	The initial				   value is 1. See <STRONG>glIndex</STRONG>.	  <STRONG>GL_CURRENT_NORMAL</STRONG>	   <EM>params</EM> returns three	values:	 the				   <EM>x</EM>, <EM>y</EM>, and <EM>z</EM> values of the current				   normal.  Integer values, if				   requested, are linearly mapped from				   the internal	floating-point				   representation such that 1.0				   returns the most positive				   representable integer value,	and				   -1.0	returns	the most negative				   representable integer value.	 The				   initial value is (0,	0, 1). See				   <STRONG>glNormal</STRONG>.	  <STRONG>GL_CURRENT_RASTER_COLOR</STRONG>  <EM>params</EM> returns four values:	the
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