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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/get.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/get.gl new file mode 100644 index 000000000..4928c44ab --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/get.gl @@ -0,0 +1,1791 @@ +_C_ License Applicability. Except to the extent portions of this file are +_C_ made subject to an alternative license as permitted in the SGI Free +_C_ Software License B, Version 1.1 (the "License"), the contents of this +_C_ file are subject only to the provisions of the License. You may not use +_C_ this file except in compliance with the License. You may obtain a copy +_C_ of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 +_C_ Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: +_C_ +_C_ http://oss.sgi.com/projects/FreeB +_C_ +_C_ Note that, as provided in the License, the Software is distributed on an +_C_ "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS +_C_ DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND +_C_ CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A +_C_ PARTICULAR PURPOSE, AND NON-INFRINGEMENT. +_C_ +_C_ Original Code. The Original Code is: OpenGL Sample Implementation, +_C_ Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, +_C_ Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. +_C_ Copyright in any portions created by third parties is as indicated +_C_ elsewhere herein. All Rights Reserved. +_C_ +_C_ Additional Notice Provisions: The application programming interfaces +_C_ established by SGI in conjunction with the Original Code are The +_C_ OpenGL(R) Graphics System: A Specification (Version 1.2.1), released +_C_ April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version +_C_ 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X +_C_ Window System(R) (Version 1.3), released October 19, 1998. This software +_C_ was created using the OpenGL(R) version 1.2.1 Sample Implementation +_C_ published by SGI, but has not been independently verified as being +_C_ compliant with the OpenGL(R) version 1.2.1 Specification. +_C_ +_C_ The first character in this file must be an '_'! +_C_ Anything on a line after _C_ is ignored +_define(_filters,tbl|eqn)_C_ +_C_ eqn is automatically replaced with neqn for nroff +_header(Get,return the value or values of a selected parameter) +_names(GetBooleanv) +_names(GetDoublev) +_names(GetFloatv) +_names(GetIntegerv) +.EQ +delim $$ +.EN +.SH PARAMETERS +_phead(_param1) +Specifies the parameter value to be returned. +The symbolic constants in the list below are accepted. +_phead(_param2) +Returns the value or values of the specified parameter. +.SH DESCRIPTION +These four commands return values for simple state variables in GL. +_param1 is a symbolic constant indicating the state variable to be returned, +and _param2 is a pointer to an array of the indicated type in +which to place the returned data. +.P +Type conversion is performed if _param2 has a different type than +the state variable value being requested. +If _cmnd(GetBooleanv) is called, +a floating-point (or integer) value is converted to _const(FALSE) if +and only if it is 0.0 (or 0). +Otherwise, +it is converted to _const(TRUE). +If _cmnd(GetIntegerv) is called, boolean values are returned as +_const(TRUE) or _const(FALSE), 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 _cmnd(GetFloatv) or _cmnd(GetDoublev) is called, +boolean values are returned as _const(TRUE) or _const(FALSE), +and integer values are converted to floating-point values. +.P +The following symbolic constants are accepted by _param1: +.TP 25 +_const(ACCUM_ALPHA_BITS) +_param2 returns one value, +the number of alpha bitplanes in the accumulation buffer. +.TP +_const(ACCUM_BLUE_BITS) +_param2 returns one value, +the number of blue bitplanes in the accumulation buffer. +.TP +_const(ACCUM_CLEAR_VALUE) +_param2 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 _cmnd(ClearAccum). +.TP +_const(ACCUM_GREEN_BITS) +_param2 returns one value, +the number of green bitplanes in the accumulation buffer. +.TP +_const(ACCUM_RED_BITS) +_param2 returns one value, +the number of red bitplanes in the accumulation buffer. +.TP +_arbconst(ACTIVE_TEXTURE) +_param2 returns a single value indicating the active multitexture unit. +The initial value is _arbconst(TEXTURE0). +See _cmnd(ActiveTextureARB). +.TP +_const(ALIASED_POINT_SIZE_RANGE) +_param2 returns two values, +the smallest and largest supported sizes for aliased points. +.TP +_const(ALIASED_LINE_WIDTH_RANGE) +_param2 returns two values, +the smallest and largest supported widths for aliased lines. +.TP +_const(ALPHA_BIAS) +_param2 returns one value, +the alpha bias factor used during pixel transfers. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(ALPHA_BITS) +_param2 returns one value, +the number of alpha bitplanes in each color buffer. +.TP +_const(ALPHA_SCALE) +_param2 returns one value, +the alpha scale factor used during pixel transfers. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(ALPHA_TEST) +_param2 returns a single boolean value indicating whether alpha testing +of fragments is enabled. The initial value is _const(FALSE). +See _cmnd(AlphaFunc). +.TP +_const(ALPHA_TEST_FUNC) +_param2 returns one value, +the symbolic name of the alpha test function. The initial value is +_const(ALWAYS). +See _cmnd(AlphaFunc). +.TP +_const(ALPHA_TEST_REF) +_param2 returns one value, +the reference value for the alpha test. The initial value is 0. +See _cmnd(AlphaFunc). +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. +.TP +_const(ATTRIB_STACK_DEPTH) +_param2 returns one value, +the depth of the attribute stack. +If the stack is empty, +0 is returned. The initial value is 0. +See _cmnd(PushAttrib). +.TP +_const(AUTO_NORMAL) +_param2 returns a single boolean value indicating whether 2D map evaluation +automatically generates surface normals. The initial value is _const(FALSE). +See _cmnd(Map2). +.TP +_const(AUX_BUFFERS) +_param2 returns one value, +the number of auxiliary color buffers. The initial value is 0. +.TP +_const(BLEND) +_param2 returns a single boolean value indicating whether blending is +enabled. The initial value is _const(FALSE). +See _cmnd(BlendFunc). +.TP +_const(BLEND_COLOR) +_param2 returns four values, +the red, green, blue, and alpha values which are the components of +the blend color. +See _cmnd(BlendColor). +.TP +_const(BLEND_DST) +_param2 returns one value, +the symbolic constant identifying the destination blend +function. The initial value is _const(ZERO). +See _cmnd(BlendFunc). +.TP +_const(BLEND_EQUATION) +_param2 returns one value, a symbolic constant indicating whether +the blend equation is _const(FUNC_ADD), _const(MIN) or +_const(MAX). See _cmnd(BlendEquation). +.TP +_const(BLEND_SRC) +_param2 returns one value, +the symbolic constant identifying the source blend function. The initial +value is _const(ONE). +See _cmnd(BlendFunc). +.TP +_const(BLUE_BIAS) +_param2 returns one value, +the blue bias factor used during pixel transfers. The initial value is 0. +See +_cmnd(PixelTransfer). +.TP +_const(BLUE_BITS) +_param2 returns one value, +the number of blue bitplanes in each color buffer. +.TP +_const(BLUE_SCALE) +_param2 returns one value, +the blue scale factor used during pixel transfers. The initial value is 1. +See +_cmnd(PixelTransfer). +.TP +_arbconst(CLIENT_ACTIVE_TEXTURE) +_param2 returns a single integer value indicating the current client active +multitexture unit. The initial value is _arbconst(TEXTURE0). +See _cmnd(ClientActiveTextureARB). +.TP +_const(CLIENT_ATTRIB_STACK_DEPTH) +_param2 returns one value indicating the depth of the +attribute stack. The initial value is 0. +See _cmnd(PushClientAttrib). +.TP +_const(CLIP_PLANE)\f2i\fP +_param2 returns a single boolean value indicating whether the specified +clipping plane is enabled. The initial value is _const(FALSE). +See _cmnd(ClipPlane). +.TP +_const(COLOR_ARRAY) +_param2 returns a single boolean value indicating whether the color array is enabled. The initial value is _const(FALSE). +See _cmnd(ColorPointer). +.TP +_const(COLOR_ARRAY_SIZE) +_param2 returns one value, +the number of components per color in the color array. The initial value +is 4. See _cmnd(ColorPointer). +.TP +_const(COLOR_ARRAY_STRIDE) +_param2 returns one value, +the byte offset between consecutive colors in the color array. The initial +value is 0. +See _cmnd(ColorPointer). +.TP +_const(COLOR_ARRAY_TYPE) +_param2 returns one value, +the data type of each component in the color array. The initial value +is _const(FLOAT). See _cmnd(ColorPointer). +.TP +_const(COLOR_CLEAR_VALUE) +_param2 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 _cmnd(ClearColor). +.TP +_const(COLOR_LOGIC_OP) +_param2 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 _const(FALSE). +See _cmnd(LogicOp). +.TP +_const(COLOR_MATERIAL) +_param2 returns a single boolean value indicating whether one or more +material parameters are tracking the current color. The initial value +is _const(FALSE). +See _cmnd(ColorMaterial). +.TP +_const(COLOR_MATERIAL_FACE) +_param2 returns one value, +a symbolic constant indicating which materials have a parameter that is +tracking the current color. The initial value is _const(FRONT_AND_BACK). +See _cmnd(ColorMaterial). +.TP +_const(COLOR_MATERIAL_PARAMETER) +_param2 returns one value, +a symbolic constant indicating which material parameters are +tracking the current color. The initial value is +_const(AMBIENT_AND_DIFFUSE). +See _cmnd(ColorMaterial). +.TP +_const(COLOR_MATRIX) +_param2 returns sixteen values: +the color matrix on the top of the color matrix stack. Initially +this matrix is the identity matrix. See _cmnd(PushMatrix). +.TP +_const(COLOR_MATRIX_STACK_DEPTH) +_param2 returns one value, +the maximum supported depth of the projection matrix stack. The value must +be at least 2. +See _cmnd(PushMatrix). +.TP +_const(COLOR_TABLE) +_param2 returns a single boolean value indicating whether the color table +lookup is enabled. +See _cmnd(ColorTable). +.TP +_const(COLOR_WRITEMASK) +_param2 returns four boolean values: +the red, green, blue, and alpha write enables for the color +buffers. The initial value is (_const(TRUE), _const(TRUE), +_const(TRUE), _const(TRUE)). +See _cmnd(ColorMask). +.TP +_const(CONVOLUTION_1D) +_param2 returns a single boolean value indicating whether 1D convolution +is enabled. The initial value is _const(FALSE). +See _cmnd(ConvolutionFilter1D). +.TP +_const(CONVOLUTION_2D) +_param2 returns a single boolean value indicating whether 2D convolution +is enabled. The initial value is _const(FALSE). +See _cmnd(ConvolutionFilter2D). +.TP +_const(CULL_FACE) +_param2 returns a single boolean value indicating whether polygon culling +is enabled. The initial value is _const(FALSE). +See _cmnd(CullFace). +.TP +_const(CULL_FACE_MODE) +_param2 returns one value, +a symbolic constant indicating which polygon faces are to be +culled. The initial value is _const(BACK). +See _cmnd(CullFace). +.TP +_const(CURRENT_COLOR) +_param2 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 _cmnd(Color). The initial value is (1, 1, 1, 1). +.TP +_const(CURRENT_INDEX) +_param2 returns one value, +the current color index. The initial value is 1. +See _cmnd(Index). +.TP +_const(CURRENT_NORMAL) +_param2 returns three values: +the \f2x\fP, \f2y\fP, and \f2z\fP 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 _cmnd(Normal). +.TP +_const(CURRENT_RASTER_COLOR) +_param2 returns four values: +the red, green, blue, and alpha values of the current raster position. +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 (1, 1, 1, 1). +See _cmnd(RasterPos). +.TP +_const(CURRENT_RASTER_DISTANCE) +_param2 returns one value, +the distance from the eye to the current raster position. The initial +value is 0. +See _cmnd(RasterPos). +.TP +_const(CURRENT_RASTER_INDEX) +_param2 returns one value, +the color index of the current raster position. The initial value is 1. +See _cmnd(RasterPos). +.TP +_const(CURRENT_RASTER_POSITION) +_param2 returns four values: +the \f2x\fP, \f2y\fP, \f2z\fP, and \f2w\fP components of the current +raster position. +\f2x\fP, \f2y\fP, and \f2z\fP are in window coordinates, +and \f2w\fP is in clip coordinates. The initial value is (0, 0, 0, 1). +See _cmnd(RasterPos). +.TP +_const(CURRENT_RASTER_POSITION_VALID) +_param2 returns a single boolean value indicating whether the current +raster position is valid. The initial value is _const(TRUE). +See _cmnd(RasterPos). +.TP +_const(CURRENT_RASTER_TEXTURE_COORDS) +_param2 returns four values: +the \f2s\fP, \f2t\fP, \f2r\fP, and \f2q\fP +current raster texture coordinates. The initial value is (0, 0, 0, 1). +See _cmnd(RasterPos) and _cmnd(TexCoord). +.TP +_const(CURRENT_TEXTURE_COORDS) +_param2 returns four values: +the \f2s\fP, \f2t\fP, \f2r\fP, and \f2q\fP current texture +coordinates. The initial value is (0, 0, 0, 1). +See +_cmnd(TexCoord). +.TP +_const(DEPTH_BIAS) +_param2 returns one value, +the depth bias factor used during pixel transfers. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(DEPTH_BITS) +_param2 returns one value, +the number of bitplanes in the depth buffer. +.TP +_const(DEPTH_CLEAR_VALUE) +_param2 returns one value, +the value that is used to clear the depth 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 1. +See _cmnd(ClearDepth). +.TP +_const(DEPTH_FUNC) +_param2 returns one value, +the symbolic constant that indicates the depth comparison +function. The initial value is _const(LESS). +See _cmnd(DepthFunc). +.TP +_const(DEPTH_RANGE) +_param2 returns two values: +the near and far mapping limits for the depth 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, 1). +See _cmnd(DepthRange). +.TP +_const(DEPTH_SCALE) +_param2 returns one value, +the depth scale factor used during pixel transfers. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(DEPTH_TEST) +_param2 returns a single boolean value indicating whether depth testing +of fragments is enabled. The initial value is _const(FALSE). +See _cmnd(DepthFunc) and _cmnd(DepthRange). +.TP +_const(DEPTH_WRITEMASK) +_param2 returns a single boolean value indicating if the depth buffer +is enabled for writing. The initial value is _const(TRUE). +See _cmnd(DepthMask). +.TP +_const(DITHER) +_param2 returns a single boolean value indicating whether dithering of +fragment colors and indices is enabled. The initial value is _const(TRUE). +.TP +_const(DOUBLEBUFFER) +_param2 returns a single boolean value indicating whether double buffering +is supported. +.TP +_const(DRAW_BUFFER) +_param2 returns one value, +a symbolic constant indicating which buffers are being drawn to. +See _cmnd(DrawBuffer). The initial value is _const(BACK) if there +are back buffers, otherwise it is _const(FRONT). +.TP +_const(EDGE_FLAG) +_param2 returns a single boolean value indicating whether the current +edge flag is _const(TRUE) or _const(FALSE). The initial value is _const(TRUE). +See _cmnd(EdgeFlag). +.TP +_const(EDGE_FLAG_ARRAY) +_param2 returns a single boolean value indicating whether the edge +flag array is enabled. The initial value is _const(FALSE). +See _cmnd(EdgeFlagPointer). +.TP +_const(EDGE_FLAG_ARRAY_STRIDE) +_param2 returns one value, +the byte offset between consecutive edge flags in the edge flag +array. The initial value is 0. +See _cmnd(EdgeFlagPointer). +.TP +_const(FEEDBACK_BUFFER_SIZE) +_param2 returns one value, the size of the feedback buffer. See +_cmnd(FeedbackBuffer). +.TP +_const(FEEDBACK_BUFFER_TYPE) +_param2 returns one value, the type of the feedback buffer. See +_cmnd(FeedbackBuffer). +.TP +_const(FOG) +_param2 returns a single boolean value indicating whether fogging is +enabled. The initial value is _const(FALSE). +See _cmnd(Fog). +.TP +_const(FOG_COLOR) +_param2 returns four values: +the red, green, blue, and alpha components of the fog 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. The initial value is (0, 0, 0, 0). +See _cmnd(Fog). +.TP +_const(FOG_DENSITY) +_param2 returns one value, +the fog density parameter. The initial value is 1. +See _cmnd(Fog). +.TP +_const(FOG_END) +_param2 returns one value, +the end factor for the linear fog equation. The initial value is 1. +See _cmnd(Fog). +.TP +_const(FOG_HINT) +_param2 returns one value, +a symbolic constant indicating the mode of the fog hint. The initial value +is _const(DONT_CARE). +See _cmnd(Hint). +.TP +_const(FOG_INDEX) +_param2 returns one value, +the fog color index. The initial value is 0. +See _cmnd(Fog). +.TP +_const(FOG_MODE) +_param2 returns one value, +a symbolic constant indicating which fog equation is selected. The initial +value is _const(EXP). +See _cmnd(Fog). +.TP +_const(FOG_START) +_param2 returns one value, +the start factor for the linear fog equation. The initial value is 0. +See _cmnd(Fog). +.TP +_const(FRONT_FACE) +_param2 returns one value, +a symbolic constant indicating whether clockwise or counterclockwise +polygon winding is treated as front-facing. The initial value is +_const(CCW). +See _cmnd(FrontFace). +.TP +_const(GREEN_BIAS) +_param2 returns one value, +the green bias factor used during pixel transfers. The initial value is 0. +.TP +_const(GREEN_BITS) +_param2 returns one value, +the number of green bitplanes in each color buffer. +.TP +_const(GREEN_SCALE) +_param2 returns one value, +the green scale factor used during pixel transfers. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(HISTOGRAM) +_param2 returns a single boolean value indicating whether histogram is +enabled. The initial value is _const(FALSE). +See _cmnd(Histogram). +.TP +_const(INDEX_ARRAY) +_param2 returns a single boolean value indicating whether the color +index array is enabled. The initial value is _const(FALSE). +See _cmnd(IndexPointer). +.TP +_const(INDEX_ARRAY_STRIDE) +_param2 returns one value, +the byte offset between consecutive color indexes in the color index +array. The initial value is 0. +See _cmnd(IndexPointer). +.TP +_const(INDEX_ARRAY_TYPE) +_param2 returns one value, +the data type of indexes in the color index array. The initial value is +_const(FLOAT). +See _cmnd(IndexPointer). +.TP +_const(INDEX_BITS) +_param2 returns one value, +the number of bitplanes in each color index buffer. +.TP +_const(INDEX_CLEAR_VALUE) +_param2 returns one value, +the color index used to clear the color index buffers. The initial value +is 0. +See _cmnd(ClearIndex). +.TP +_const(INDEX_LOGIC_OP) +_param2 returns a single boolean value indicating whether a fragment's index +values are merged into the framebuffer using a logical +operation. The initial value is _const(FALSE). +See _cmnd(LogicOp). +.TP +_const(INDEX_MODE) +_param2 returns a single boolean value indicating whether the GL is in +color index mode (_const(TRUE)) or RGBA mode (_const(FALSE)). +.TP +_const(INDEX_OFFSET) +_param2 returns one value, +the offset added to color and stencil indices during pixel +transfers. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(INDEX_SHIFT) +_param2 returns one value, +the amount that color and stencil indices are shifted during pixel +transfers. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(INDEX_WRITEMASK) +_param2 returns one value, +a mask indicating which bitplanes of each color index buffer can be +written. The initial value is all 1's. +See _cmnd(IndexMask). +.TP +_const(LIGHT)\f2i\fP +_param2 returns a single boolean value indicating whether the specified +light is enabled. The initial value is _const(FALSE). +See _cmnd(Light) and _cmnd(LightModel). +.TP +_const(LIGHTING) +_param2 returns a single boolean value indicating whether lighting is +enabled. The initial value is _const(FALSE). +See _cmnd(LightModel). +.TP +_const(LIGHT_MODEL_AMBIENT) +_param2 returns four values: +the red, green, blue, and alpha components of the ambient intensity of +the entire scene. +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 (0.2, 0.2, 0.2, 1.0). +See _cmnd(LightModel). +.TP +_const(LIGHT_MODEL_COLOR_CONTROL) +_param2 returns single enumerated value indicating whether specular +reflection calculations are separated from normal lighting computations. +The initial value is _const(SINGLE_COLOR). +.TP +_const(LIGHT_MODEL_LOCAL_VIEWER) +_param2 returns a single boolean value indicating whether specular reflection +calculations treat the viewer as being local to the scene. The initial +value is _const(FALSE). +See _cmnd(LightModel). +.TP +_const(LIGHT_MODEL_TWO_SIDE) +_param2 returns a single boolean value indicating whether separate materials +are used to compute lighting for front- and back-facing +polygons. The initial value is _const(FALSE). +See _cmnd(LightModel). +.TP +_const(LINE_SMOOTH) +_param2 returns a single boolean value indicating whether antialiasing of +lines is enabled. The initial value is _const(FALSE). +See _cmnd(LineWidth). +.TP +_const(LINE_SMOOTH_HINT) +_param2 returns one value, +a symbolic constant indicating the mode of the line antialiasing +hint. The initial value is _const(DONT_CARE). +See _cmnd(Hint). +.TP +_const(LINE_STIPPLE) +_param2 returns a single boolean value indicating whether stippling of lines +is enabled. The initial value is _const(FALSE). +See _cmnd(LineStipple). +.TP +_const(LINE_STIPPLE_PATTERN) +_param2 returns one value, +the 16-bit line stipple pattern. The initial value is all 1's. +See _cmnd(LineStipple). +.TP +_const(LINE_STIPPLE_REPEAT) +_param2 returns one value, +the line stipple repeat factor. The initial value is 1. +See _cmnd(LineStipple). +.TP +_const(LINE_WIDTH) +_param2 returns one value, +the line width as specified with _cmnd(LineWidth). The initial value is +1. +.TP +_const(LINE_WIDTH_GRANULARITY) +_param2 returns one value, +the width difference between adjacent supported widths for antialiased lines. +See _cmnd(LineWidth). +.TP +_const(LINE_WIDTH_RANGE) +_param2 returns two values: +the smallest and largest supported widths for antialiased +lines. +See _cmnd(LineWidth). +.TP +_const(LIST_BASE) +_param2 returns one value, +the base offset added to all names in arrays presented to +_cmnd(CallLists). The initial value is 0. +See _cmnd(ListBase). +.TP +_const(LIST_INDEX) +_param2 returns one value, +the name of the display list currently under construction. +0 is returned if no display list is currently under +construction. The initial value is 0. +See _cmnd(NewList). +.TP +_const(LIST_MODE) +_param2 returns one value, +a symbolic constant indicating the construction mode of the display list +currently under construction. The initial value is 0. +See _cmnd(NewList). +.TP +_const(LOGIC_OP_MODE) +_param2 returns one value, +a symbolic constant indicating the selected logic operation +mode. The initial value is _const(COPY). +See _cmnd(LogicOp). +.TP +_const(MAP1_COLOR_4) +_param2 returns a single boolean value indicating whether +1D evaluation generates colors. The initial value is _const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_GRID_DOMAIN) +_param2 returns two values: +the endpoints of the 1D map's grid domain. The initial value is (0, 1). +See _cmnd(MapGrid). +.TP +_const(MAP1_GRID_SEGMENTS) +_param2 returns one value, +the number of partitions in the 1D map's grid domain. The initial value +is 1. +See _cmnd(MapGrid). +.TP +_const(MAP1_INDEX) +_param2 returns a single boolean value indicating whether +1D evaluation generates color indices. The initial value is _const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_NORMAL) +_param2 returns a single boolean value indicating whether +1D evaluation generates normals. The initial value is _const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_TEXTURE_COORD_1) +_param2 returns a single boolean value indicating whether +1D evaluation generates 1D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_TEXTURE_COORD_2) +_param2 returns a single boolean value indicating whether +1D evaluation generates 2D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_TEXTURE_COORD_3) +_param2 returns a single boolean value indicating whether +1D evaluation generates 3D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_TEXTURE_COORD_4) +_param2 returns a single boolean value indicating whether +1D evaluation generates 4D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_VERTEX_3) +_param2 returns a single boolean value indicating whether +1D evaluation generates 3D vertex coordinates. The initial value is +_const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP1_VERTEX_4) +_param2 returns a single boolean value indicating whether +1D evaluation generates 4D vertex coordinates. The initial value is +_const(FALSE). +See _cmnd(Map1). +.TP +_const(MAP2_COLOR_4) +_param2 returns a single boolean value indicating whether +2D evaluation generates colors. The initial value is _const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_GRID_DOMAIN) +_param2 returns four values: +the endpoints of the 2D map's $i$ and $j$ grid domains. The initial value +is (0,1; 0,1). +See _cmnd(MapGrid). +.TP +_const(MAP2_GRID_SEGMENTS) +_param2 returns two values: +the number of partitions in the 2D map's $i$ and $j$ grid +domains. The initial value is (1,1). +See _cmnd(MapGrid). +.TP +_const(MAP2_INDEX) +_param2 returns a single boolean value indicating whether +2D evaluation generates color indices. The initial value is _const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_NORMAL) +_param2 returns a single boolean value indicating whether +2D evaluation generates normals. The initial value is _const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_TEXTURE_COORD_1) +_param2 returns a single boolean value indicating whether +2D evaluation generates 1D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_TEXTURE_COORD_2) +_param2 returns a single boolean value indicating whether +2D evaluation generates 2D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_TEXTURE_COORD_3) +_param2 returns a single boolean value indicating whether +2D evaluation generates 3D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_TEXTURE_COORD_4) +_param2 returns a single boolean value indicating whether +2D evaluation generates 4D texture coordinates. The initial value is +_const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_VERTEX_3) +_param2 returns a single boolean value indicating whether +2D evaluation generates 3D vertex coordinates. The initial value is +_const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP2_VERTEX_4) +_param2 returns a single boolean value indicating whether +2D evaluation generates 4D vertex coordinates. The initial value is +_const(FALSE). +See _cmnd(Map2). +.TP +_const(MAP_COLOR) +_param2 returns a single boolean value indicating if colors and +color indices are to be replaced by table lookup during pixel +transfers. The initial value is _const(FALSE). +See _cmnd(PixelTransfer). +.TP +_const(MAP_STENCIL) +_param2 returns a single boolean value indicating if stencil indices +are to be replaced by table lookup during pixel transfers. The initial +value is _const(FALSE). +See _cmnd(PixelTransfer). +.TP +_const(MATRIX_MODE) +_param2 returns one value, +a symbolic constant indicating which matrix stack is currently the +target of all matrix operations. The initial value is _const(MODELVIEW). +See _cmnd(MatrixMode). +.TP +_const(MAX_3D_TEXTURE_SIZE) +_param2 returns one value, +a rough estimate of the largest 3D texture that the GL can handle. +If the GL version is 1.2 or greater, use +_const(PROXY_TEXTURE_3D) to determine if a texture is too large. +See _cmnd(TexImage3D). +.TP +_const(MAX_CLIENT_ATTRIB_STACK_DEPTH) +_param2 returns one value indicating the maximum supported depth +of the client attribute stack. +See _cmnd(PushClientAttrib). +.TP +_const(MAX_ATTRIB_STACK_DEPTH) +_param2 returns one value, +the maximum supported depth of the attribute stack. The value must be at least 16. +See _cmnd(PushAttrib). +.TP +_const(MAX_CLIP_PLANES) +_param2 returns one value, +the maximum number of application-defined clipping planes. The value must be at least 6. +See _cmnd(ClipPlane). +.TP +_const(MAX_COLOR_MATRIX_STACK_DEPTH) +_param2 returns one value, the maximum supported depth of the color matrix +stack. The value must be at least 2. +See _cmnd(PushMatrix). +.TP +_const(MAX_ELEMENTS_INDICES) +_param2 returns one value, +the recommended maximum number of vertex array indices. See _cmnd(DrawRangeElements). +.TP +_const(MAX_ELEMENTS_VERTICES) +_param2 returns one value, +the recommended maximum number of vertex array vertices. See _cmnd(DrawRangeElements). +.TP +_const(MAX_EVAL_ORDER) +_param2 returns one value, +the maximum equation order supported by 1D and 2D +evaluators. The value must be at least 8. +See _cmnd(Map1) and _cmnd(Map2). +.TP +_const(MAX_LIGHTS) +_param2 returns one value, +the maximum number of lights. The value must be at least 8. +See _cmnd(Light). +.TP +_const(MAX_LIST_NESTING) +_param2 returns one value, +the maximum recursion depth allowed during display-list +traversal. The value must be at least 64. +See _cmnd(CallList). +.TP +_const(MAX_MODELVIEW_STACK_DEPTH) +_param2 returns one value, +the maximum supported depth of the modelview matrix stack. The value must +be at least 32. +See _cmnd(PushMatrix). +.TP +_const(MAX_NAME_STACK_DEPTH) +_param2 returns one value, +the maximum supported depth of the selection name stack. The value must be at least 64. +See _cmnd(PushName). +.TP +_const(MAX_PIXEL_MAP_TABLE) +_param2 returns one value, +the maximum supported size of a _cmnd(PixelMap) lookup table. +The value must be at least 32. +See _cmnd(PixelMap). +.TP +_const(MAX_PROJECTION_STACK_DEPTH) +_param2 returns one value, +the maximum supported depth of the projection matrix stack. The value must be at least 2. +See _cmnd(PushMatrix). +.TP +_const(MAX_TEXTURE_SIZE) +_param2 returns one value. +The value gives a rough estimate of the largest texture that +the GL can handle. +If the GL version is 1.1 or greater, use +_const(PROXY_TEXTURE_1D) or _const(PROXY_TEXTURE_2D) +to determine if a texture is too large. +See _cmnd(TexImage1D) and _cmnd(TexImage2D). +.TP +_const(MAX_TEXTURE_STACK_DEPTH) +_param2 returns one value, +the maximum supported depth of the texture matrix stack. The value must be at least 2. +See _cmnd(PushMatrix). +.TP +_arbconst(MAX_TEXTURE_UNITS) +_param2 returns a single value indicating the number of texture units +supported. The value must be at least 1. +See _cmnd(ActiveTextureARB). +.TP +_const(MAX_VIEWPORT_DIMS) +_param2 returns two values: +the maximum supported width and height of the viewport. +These must be at least as large as the visible dimensions of the display +being rendered to. +See _cmnd(Viewport). +.TP +_const(MINMAX) +_param2 returns a single boolean value indicating whether pixel minmax +values are computed. The initial value is _const(FALSE). +See _cmnd(Minmax). +.TP +_const(MODELVIEW_MATRIX) +_param2 returns sixteen values: +the modelview matrix on the top of the modelview matrix stack. Initially +this matrix is the identity matrix. See _cmnd(PushMatrix). +.TP +_const(MODELVIEW_STACK_DEPTH) +_param2 returns one value, +the number of matrices on the modelview matrix stack. +The initial value is 1. +See _cmnd(PushMatrix). +.TP +_const(NAME_STACK_DEPTH) +_param2 returns one value, +the number of names on the selection name stack. The initial value is 0. +See _cmnd(PushName). +.TP +_const(NORMAL_ARRAY) +_param2 returns a single boolean value, indicating whether the normal +array is enabled. The initial value is _const(FALSE). +See _cmnd(NormalPointer). +.TP +_const(NORMAL_ARRAY_STRIDE) +_param2 returns one value, +the byte offset between consecutive normals in the normal +array. The initial value is 0. +See _cmnd(NormalPointer). +.TP +_const(NORMAL_ARRAY_TYPE) +_param2 returns one value, +the data type of each coordinate in the normal array. The initial value is +_const(FLOAT). +See _cmnd(NormalPointer). +.TP +_const(NORMALIZE) +_param2 returns a single boolean value indicating whether normals are +automatically scaled to unit length after they have been transformed to +eye coordinates. The initial value is _const(FALSE). +See _cmnd(Normal). +.TP +_const(PACK_ALIGNMENT) +_param2 returns one value, +the byte alignment used for writing pixel data to memory. The initial +value is 4. +See _cmnd(PixelStore). +.TP +_const(PACK_IMAGE_HEIGHT) +_param2 returns one value, +the image height used for writing pixel data to memory. The initial +value is 0. +See _cmnd(PixelStore). +.TP +_const(PACK_LSB_FIRST) +_param2 returns a single boolean value indicating whether single-bit +pixels being written to memory are written first to the least significant +bit of each unsigned byte. The initial value is _const(FALSE). +See _cmnd(PixelStore). +.TP +_const(PACK_ROW_LENGTH) +_param2 returns one value, +the row length used for writing pixel data to memory. The initial value is +0. +See _cmnd(PixelStore). +.TP +_const(PACK_SKIP_IMAGES) +_param2 returns one value, +the number of pixel images skipped before the first pixel is written +into memory. The initial value is 0. +See _cmnd(PixelStore). +.TP +_const(PACK_SKIP_PIXELS) +_param2 returns one value, +the number of pixel locations skipped before the first pixel is written +into memory. The initial value is 0. +See _cmnd(PixelStore). +.TP +_const(PACK_SKIP_ROWS) +_param2 returns one value, +the number of rows of pixel locations skipped before the first pixel is written +into memory. The initial value is 0. +See _cmnd(PixelStore). +.TP +_const(PACK_SWAP_BYTES) +_param2 returns a single boolean value indicating whether the bytes of +two-byte and four-byte pixel indices and components are swapped before being +written to memory. The initial value is _const(FALSE). +See _cmnd(PixelStore). +.TP +_const(PERSPECTIVE_CORRECTION_HINT) +_param2 returns one value, +a symbolic constant indicating the mode of the perspective correction +hint. The initial value is _const(DONT_CARE). +See _cmnd(Hint). +.TP +_const(PIXEL_MAP_A_TO_A_SIZE) +_param2 returns one value, +the size of the alpha-to-alpha pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_B_TO_B_SIZE) +_param2 returns one value, +the size of the blue-to-blue pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_G_TO_G_SIZE) +_param2 returns one value, +the size of the green-to-green pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_I_TO_A_SIZE) +_param2 returns one value, +the size of the index-to-alpha pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_I_TO_B_SIZE) +_param2 returns one value, +the size of the index-to-blue pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_I_TO_G_SIZE) +_param2 returns one value, +the size of the index-to-green pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_I_TO_I_SIZE) +_param2 returns one value, +the size of the index-to-index pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_I_TO_R_SIZE) +_param2 returns one value, +the size of the index-to-red pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_R_TO_R_SIZE) +_param2 returns one value, +the size of the red-to-red pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(PIXEL_MAP_S_TO_S_SIZE) +_param2 returns one value, +the size of the stencil-to-stencil pixel translation table. +The initial value is 1. +See _cmnd(PixelMap). +.TP +_const(POINT_SIZE) +_param2 returns one value, +the point size as specified by _cmnd(PointSize). The initial value is 1. +.TP +_const(POINT_SIZE_GRANULARITY) +_param2 returns one value, +the size difference between adjacent supported sizes for antialiased points. +See _cmnd(PointSize). +.TP +_const(POINT_SIZE_RANGE) +_param2 returns two values: +the smallest and largest supported sizes for antialiased +points. The smallest size must be at most 1, and the largest size must +be at least 1. +See _cmnd(PointSize). +.TP +_const(POINT_SMOOTH) +_param2 returns a single boolean value indicating whether antialiasing of +points is enabled. The initial value is _const(FALSE). +See _cmnd(PointSize). +.TP +_const(POINT_SMOOTH_HINT) +_param2 returns one value, +a symbolic constant indicating the mode of the point antialiasing +hint. The initial value is _const(DONT_CARE). +See _cmnd(Hint). +.TP +_const(POLYGON_MODE) +_param2 returns two values: +symbolic constants indicating whether front-facing and back-facing polygons +are rasterized as points, lines, or filled polygons. The initial value is +_const(FILL). +See _cmnd(PolygonMode). +.TP +_const(POLYGON_OFFSET_FACTOR) +_param2 returns one value, +the scaling factor used to determine the variable offset that is added +to the depth value of each fragment generated when a polygon is +rasterized. The initial value is 0. +See _cmnd(PolygonOffset). +.TP +_const(POLYGON_OFFSET_UNITS) +_param2 returns one value. +This value is multiplied by an implementation-specific value and then +added to the depth value of each fragment +generated when a polygon is rasterized. The initial value is 0. +See _cmnd(PolygonOffset). +.TP +_const(POLYGON_OFFSET_FILL) +_param2 returns a single boolean value indicating whether polygon offset +is enabled for polygons in fill mode. The initial value is _const(FALSE). +See _cmnd(PolygonOffset). +.TP +_const(POLYGON_OFFSET_LINE) +_param2 returns a single boolean value indicating whether polygon offset +is enabled for polygons in line mode. The initial value is _const(FALSE). +See _cmnd(PolygonOffset). +.TP +_const(POLYGON_OFFSET_POINT) +_param2 returns a single boolean value indicating whether polygon offset +is enabled for polygons in point mode. The initial value is _const(FALSE). +See _cmnd(PolygonOffset). +.TP +_const(POLYGON_SMOOTH) +_param2 returns a single boolean value indicating whether antialiasing of +polygons is enabled. The initial value is _const(FALSE). +See _cmnd(PolygonMode). +.TP +_const(POLYGON_SMOOTH_HINT) +_param2 returns one value, +a symbolic constant indicating the mode of the polygon antialiasing +hint. The initial value is _const(DONT_CARE). +See _cmnd(Hint). +.TP +_const(POLYGON_STIPPLE) +_param2 returns a single boolean value indicating whether polygon +stippling is enabled. The initial value is _const(FALSE). +See _cmnd(PolygonStipple). +.TP +_const(POST_COLOR_MATRIX_COLOR_TABLE) +_param2 returns a single boolean value indicating whether post color +matrix transformation lookup is enabled. The initial value is +_const(FALSE). +See _cmnd(ColorTable). +.TP +_const(POST_COLOR_MATRIX_RED_BIAS) +_param2 returns one value, the red bias factor applied to RGBA fragments +after color matrix transformations. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(POST_COLOR_MATRIX_GREEN_BIAS) +_param2 returns one value, the green bias factor applied to RGBA fragments +after color matrix transformations. The initial value is 0. +See _cmnd(PixelTransfer) +.TP +_const(POST_COLOR_MATRIX_BLUE_BIAS) +_param2 returns one value, the blue bias factor applied to RGBA fragments +after color matrix transformations. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(POST_COLOR_MATRIX_ALPHA_BIAS) +_param2 returns one value, the alpha bias factor applied to RGBA fragments +after color matrix transformations. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(POST_COLOR_MATRIX_RED_SCALE) +_param2 returns one value, the red scale factor applied to RGBA fragments +after color matrix transformations. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(POST_COLOR_MATRIX_GREEN_SCALE) +_param2 returns one value, the green scale factor applied to RGBA fragments +after color matrix transformations. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(POST_COLOR_MATRIX_BLUE_SCALE) +_param2 returns one value, the blue scale factor applied to RGBA fragments +after color matrix transformations. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(POST_COLOR_MATRIX_ALPHA_SCALE) +_param2 returns one value, the alpha scale factor applied to RGBA fragments +after color matrix transformations. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_COLOR_TABLE) +_param2 returns a single boolean value indicating whether post convolution +lookup is enabled. The initial value is _const(FALSE). +See _cmnd(ColorTable). +.TP +_const(POST_CONVOLUTION_RED_BIAS) +_param2 returns one value, the red bias factor applied to RGBA fragments +after convolution. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_GREEN_BIAS) +_param2 returns one value, the green bias factor applied to RGBA fragments +after convolution. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_BLUE_BIAS) +_param2 returns one value, the blue bias factor applied to RGBA fragments +after convolution. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_ALPHA_BIAS) +_param2 returns one value, the alpha bias factor applied to RGBA fragments +after convolution. The initial value is 0. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_RED_SCALE) +_param2 returns one value, the red scale factor applied to RGBA fragments +after convolution. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_GREEN_SCALE) +_param2 returns one value, the green scale factor applied to RGBA fragments +after convolution. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_BLUE_SCALE) +_param2 returns one value, the blue scale factor applied to RGBA fragments +after convolution. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(POST_CONVOLUTION_ALPHA_SCALE) +_param2 returns one value, the alpha scale factor applied to RGBA fragments +after convolution. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(PROJECTION_MATRIX) +_param2 returns sixteen values: +the projection matrix on the top of the projection matrix +stack. Initially this matrix is the identity matrix. +See _cmnd(PushMatrix). +.TP +_const(PROJECTION_STACK_DEPTH) +_param2 returns one value, +the number of matrices on the projection matrix stack. +The initial value is 1. +See _cmnd(PushMatrix). +.TP +_const(READ_BUFFER) +_param2 returns one value, +a symbolic constant indicating which color buffer is selected for +reading. The initial value is _const(BACK) if there is a back buffer, +otherwise it is _const(FRONT). +See +_cmnd(ReadPixels) and _cmnd(Accum). +.TP +_const(RED_BIAS) +_param2 returns one value, +the red bias factor used during pixel transfers. The initial value is 0. +.TP +_const(RED_BITS) +_param2 returns one value, +the number of red bitplanes in each color buffer. +.TP +_const(RED_SCALE) +_param2 returns one value, +the red scale factor used during pixel transfers. The initial value is 1. +See _cmnd(PixelTransfer). +.TP +_const(RENDER_MODE) +_param2 returns one value, +a symbolic constant indicating whether the GL is in render, +select, +or feedback mode. The initial value is _const(RENDER). +See _cmnd(RenderMode). +.TP +_const(RESCALE_NORMAL) +_param2 returns single boolean value +indicating whether normal rescaling is enabled. +See _cmnd(Enable). +.TP +_const(RGBA_MODE) +_param2 returns a single boolean value indicating whether the GL is in RGBA +mode (true) or color index mode (false). +See _cmnd(Color). +.TP +_const(SCISSOR_BOX) +_param2 returns four values: +the $x$ and $y$ window coordinates of the scissor box, +followed by its width and height. +Initially the $x$ and $y$ window coordinates are both 0 and the +width and height are set to the size of the window. +See _cmnd(Scissor). +.TP +_const(SCISSOR_TEST) +_param2 returns a single boolean value indicating whether scissoring is +enabled. The initial value is _const(FALSE). +See _cmnd(Scissor). +.TP +_const(SELECTION_BUFFER_SIZE) +_param2 return one value, +the size of the selection buffer. +See _cmnd(SelectBuffer). +.TP +_const(SEPARABLE_2D) +_param2 returns a single boolean value indicating whether 2D separable +convolution is enabled. The initial value is _const(FALSE). +See _cmnd(SeparableFilter2D). +.TP +_const(SHADE_MODEL) +_param2 returns one value, +a symbolic constant indicating whether the shading mode is flat or +smooth. The initial value is _const(SMOOTH). +See _cmnd(ShadeModel). +.TP +_const(SMOOTH_LINE_WIDTH_RANGE) +_param2 returns two values, +the smallest and largest supported widths for antialiased lines. +See _cmnd(LineWidth). +.TP +_const(SMOOTH_LINE_WIDTH_GRANULARITY) +_param2 returns one value, +the granularity of widths for antialiased lines. +See _cmnd(LineWidth). +.TP +_const(SMOOTH_POINT_SIZE_RANGE) +_param2 returns two values, +the smallest and largest supported widths for antialiased points. +See _cmnd(PointSize). +.TP +_const(SMOOTH_POINT_SIZE_GRANULARITY) +_param2 returns one value, +the granularity of sizes for antialiased points. +See _cmnd(PointSize). +.TP +_const(STENCIL_BITS) +_param2 returns one value, +the number of bitplanes in the stencil buffer. +.TP +_const(STENCIL_CLEAR_VALUE) +_param2 returns one value, +the index to which the stencil bitplanes are cleared. The initial value is +0. +See _cmnd(ClearStencil). +.TP +_const(STENCIL_FAIL) +_param2 returns one value, +a symbolic constant indicating what action is taken when the stencil +test fails. The initial value is _const(KEEP). +See _cmnd(StencilOp). +.TP +_const(STENCIL_FUNC) +_param2 returns one value, +a symbolic constant indicating what function is used to compare the +stencil reference value with the stencil buffer value. The initial value +is _const(ALWAYS). +See _cmnd(StencilFunc). +.TP +_const(STENCIL_PASS_DEPTH_FAIL) +_param2 returns one value, +a symbolic constant indicating what action is taken when the stencil +test passes, +but the depth test fails. The initial value is _const(KEEP). +See _cmnd(StencilOp). +.TP +_const(STENCIL_PASS_DEPTH_PASS) +_param2 returns one value, +a symbolic constant indicating what action is taken when the stencil +test passes and the depth test passes. The initial value is _const(KEEP). +See _cmnd(StencilOp). +.TP +_const(STENCIL_REF) +_param2 returns one value, +the reference value that is compared with the contents of the stencil +buffer. The initial value is 0. +See _cmnd(StencilFunc). +.TP +_const(STENCIL_TEST) +_param2 returns a single boolean value indicating whether stencil testing +of fragments is enabled. The initial value is _const(FALSE). +See _cmnd(StencilFunc) and _cmnd(StencilOp). +.TP +_const(STENCIL_VALUE_MASK) +_param2 returns one value, +the mask that is used to mask both the stencil reference value and the +stencil buffer value before they are compared. The initial value is all 1's. +See _cmnd(StencilFunc). +.TP +_const(STENCIL_WRITEMASK) +_param2 returns one value, +the mask that controls writing of the stencil bitplanes. The initial value +is all 1's. See _cmnd(StencilMask). +.TP +_const(STEREO) +_param2 returns a single boolean value indicating whether stereo buffers +(left and right) are supported. +.TP +_const(SUBPIXEL_BITS) +_param2 returns one value, +an estimate of the number of bits of subpixel resolution that are used to +position rasterized geometry in window coordinates. The initial value +.br +is 4. +.TP +_const(TEXTURE_1D) +_param2 returns a single boolean value indicating whether 1D texture +mapping is enabled. The initial value is _const(FALSE). +See _cmnd(TexImage1D). +.TP +_const(TEXTURE_BINDING_1D) +_param2 returns a single value, the name of the texture +currently bound to the target _const(TEXTURE_1D). The initial value is 0. +See _cmnd(BindTexture). +.TP +_const(TEXTURE_2D) +_param2 returns a single boolean value indicating whether 2D texture +mapping is enabled. The initial value is _const(FALSE). +See _cmnd(TexImage2D). +.TP +_const(TEXTURE_BINDING_2D) +_param2 returns a single value, the name of the texture +currently bound to the target _const(TEXTURE_2D). The initial value is 0. +See _cmnd(BindTexture). +.TP +_const(TEXTURE_3D) +_param2 returns a single boolean value indicating whether 3D texture +mapping is enabled. The initial value is _const(FALSE). +See _cmnd(TexImage3D). +.TP +_const(TEXTURE_BINDING_3D) +_param2 returns a single value, the name of the texture +currently bound to the target _const(TEXTURE_3D). The initial value is 0. +See _cmnd(BindTexture). +.TP +_const(TEXTURE_COORD_ARRAY) +_param2 returns a single boolean value indicating whether the texture +coordinate array is enabled. The initial value is _const(FALSE). +See _cmnd(TexCoordPointer). +.TP +_const(TEXTURE_COORD_ARRAY_SIZE) +_param2 returns one value, +the number of coordinates per element in the texture coordinate +array. The initial value is 4. +See _cmnd(TexCoordPointer). +.TP +_const(TEXTURE_COORD_ARRAY_STRIDE) +_param2 returns one value, +the byte offset between consecutive elements in the texture coordinate +array. The initial value is 0. +See _cmnd(TexCoordPointer). +.TP +_const(TEXTURE_COORD_ARRAY_TYPE) +_param2 returns one value, +the data type of the coordinates in the texture coordinate +array. The initial value is _const(FLOAT). +See _cmnd(TexCoordPointer). +.TP +_const(TEXTURE_GEN_Q) +_param2 returns a single boolean value indicating whether automatic generation +of the \f2q\fP texture coordinate is enabled. The initial value is _const(FALSE). +See _cmnd(TexGen). +.TP +_const(TEXTURE_GEN_R) +_param2 returns a single boolean value indicating whether automatic generation +of the \f2r\fP texture coordinate is enabled. The initial value is _const(FALSE). +See _cmnd(TexGen). +.TP +_const(TEXTURE_GEN_S) +_param2 returns a single boolean value indicating whether automatic generation +of the \f2S\fP texture coordinate is enabled. The initial value is _const(FALSE). +See _cmnd(TexGen). +.TP +_const(TEXTURE_GEN_T) +_param2 returns a single boolean value indicating whether automatic generation +of the T texture coordinate is enabled. The initial value is _const(FALSE). +See _cmnd(TexGen). +.TP +_const(TEXTURE_MATRIX) +_param2 returns sixteen values: +the texture matrix on the top of the texture matrix stack. Initially this +matrix is the identity matrix. +See _cmnd(PushMatrix). +.TP +_const(TEXTURE_STACK_DEPTH) +_param2 returns one value, +the number of matrices on the texture matrix stack. +The initial value is 1. +See _cmnd(PushMatrix). +.TP +_const(UNPACK_ALIGNMENT) +_param2 returns one value, +the byte alignment used for reading pixel data from memory. The initial +value is 4. +See _cmnd(PixelStore). +.TP +_const(UNPACK_IMAGE_HEIGHT) +_param2 returns one value, +the image height used for reading pixel data from memory. The initial +is 0. +See _cmnd(PixelStore). +.TP +_const(UNPACK_LSB_FIRST) +_param2 returns a single boolean value indicating whether single-bit +pixels being read from memory are read first from the least significant +bit of each unsigned byte. The initial value is _const(FALSE). +See _cmnd(PixelStore). +.TP +_const(UNPACK_ROW_LENGTH) +_param2 returns one value, +the row length used for reading pixel data from memory. The initial value +is 0. +See _cmnd(PixelStore). +.TP +_const(UNPACK_SKIP_IMAGES) +_param2 returns one value, +the number of pixel images skipped before the first pixel is read +from memory. The initial value is 0. +See _cmnd(PixelStore). +.TP +_const(UNPACK_SKIP_PIXELS) +_param2 returns one value, +the number of pixel locations skipped before the first pixel is read +from memory. The initial value is 0. +See _cmnd(PixelStore). +.TP +_const(UNPACK_SKIP_ROWS) +_param2 returns one value, +the number of rows of pixel locations skipped before the first pixel is read +from memory. The initial value is 0. +See _cmnd(PixelStore). +.TP +_const(UNPACK_SWAP_BYTES) +_param2 returns a single boolean value indicating whether the bytes of +two-byte and four-byte pixel indices and components are swapped after being +read from memory. The initial value is _const(FALSE). +See _cmnd(PixelStore). +.TP +_const(VERTEX_ARRAY) +_param2 returns a single boolean value indicating whether the vertex +array is enabled. The initial value is _const(FALSE). +See _cmnd(VertexPointer). +.TP +_const(VERTEX_ARRAY_SIZE) +_param2 returns one value, +the number of coordinates per vertex in the vertex array. The initial +value is 4. +See _cmnd(VertexPointer). +.TP +_const(VERTEX_ARRAY_STRIDE) +_param2 returns one value, +the byte offset between consecutive vertices in the vertex +array. The initial value is 0. +See _cmnd(VertexPointer). +.TP +_const(VERTEX_ARRAY_TYPE) +_param2 returns one value, +the data type of each coordinate in the vertex array. The initial value is +_const(FLOAT). +See _cmnd(VertexPointer). +.TP +_const(VIEWPORT) +_param2 returns four values: +the $x$ and $y$ window coordinates of the viewport, +followed by its width and height. +Initially the $x$ and $y$ window coordinates are both set to 0, +and the width and height are set to the width and height of the window into +which the GL will do its rendering. +See _cmnd(Viewport). +.TP +_const(ZOOM_X) +_param2 returns one value, +the $x$ pixel zoom factor. The initial value is 1. +See _cmnd(PixelZoom). +.TP +_const(ZOOM_Y) +_param2 returns one value, +the $y$ pixel zoom factor. The initial value is 1. +See _cmnd(PixelZoom). +.P +Many of the boolean parameters can also be queried more easily using +_cmnd(IsEnabled). +.SH NOTES +_const(COLOR_LOGIC_OP), +_const(COLOR_ARRAY), +_const(COLOR_ARRAY_SIZE), +_const(COLOR_ARRAY_STRIDE), +_const(COLOR_ARRAY_TYPE), +_const(EDGE_FLAG_ARRAY), +_const(EDGE_FLAG_ARRAY_STRIDE), +_const(INDEX_ARRAY), +_const(INDEX_ARRAY_STRIDE), +_const(INDEX_ARRAY_TYPE), +_const(INDEX_LOGIC_OP), +_const(NORMAL_ARRAY), +_const(NORMAL_ARRAY_STRIDE), +_const(NORMAL_ARRAY_TYPE), +_const(POLYGON_OFFSET_UNITS), +_const(POLYGON_OFFSET_FACTOR), +_const(POLYGON_OFFSET_FILL), +_const(POLYGON_OFFSET_LINE), +_const(POLYGON_OFFSET_POINT), +_const(TEXTURE_COORD_ARRAY), +_const(TEXTURE_COORD_ARRAY_SIZE), +_const(TEXTURE_COORD_ARRAY_STRIDE), +_const(TEXTURE_COORD_ARRAY_TYPE), +_const(VERTEX_ARRAY), +_const(VERTEX_ARRAY_SIZE), +_const(VERTEX_ARRAY_STRIDE), and +_const(VERTEX_ARRAY_TYPE) +are available only if the GL version is 1.1 or greater. +.P +_const(ALIASED_POINT_SIZE_RANGE), +_const(ALIASED_POINT_SIZE_GRANULARITY), +_const(FEEDBACK_BUFFER_SIZE), +_const(FEEDBACK_BUFFER_TYPE), +_const(LIGHT_MODEL_AMBIENT), +_const(LIGHT_MODEL_COLOR_CONTROL), +_const(MAX_3D_TEXTURE_SIZE), +_const(MAX_ELEMENTS_INDICES), +_const(MAX_ELEMENTS_VERTICES), +_const(PACK_IMAGE_HEIGHT), +_const(PACK_SKIP_IMAGES), +_const(RESCALE_NORMAL), +_const(SELECTION_BUFFER_SIZE), +_const(SMOOTH_LINE_WIDTH_GRANULARITY), +_const(SMOOTH_LINE_WIDTH_RANGE), +_const(SMOOTH_POINT_SIZE_GRANULARITY), +_const(SMOOTH_POINT_SIZE_RANGE), +_const(TEXTURE_3D), +_const(TEXTURE_BINDING_3D), +_const(UNPACK_IMAGE_HEIGHT), and +_const(UNPACK_SKIP_IMAGES) +are available only if the GL version is 1.2 or greater. +.P +_const(LINE_WIDTH_GRANULARITY) was deprecated in GL version 1.2. Its +functionality was replaced by _const(SMOOTH_LINE_WIDTH_GRANULARITY). +.P +_const(LINE_WIDTH_RANGE) was deprecated in GL version 1.2. Its +functionality was replaced by _const(SMOOTH_LINE_WIDTH_RANGE). +.P +_const(POINT_SIZE_GRANULARITY) was deprecated in GL version 1.2. Its +functionality was replaced by _const(SMOOTH_POINT_SIZE_GRANULARITY). +.P +_const(POINT_SIZE_RANGE) was deprecated in GL version 1.2. Its +functionality was replaced by _const(SMOOTH_POINT_SIZE_RANGE). +.P +_const(BLEND_COLOR), +_const(BLEND_EQUATION), +_const(COLOR_MATRIX), +_const(COLOR_MATRIX_STACK_DEPTH), +_const(COLOR_TABLE), +_const(CONVOLUTION_1D), +_const(CONVOLUTION_2D), +_const(HISTOGRAM), +_const(MAX_COLOR_MATRIX_STACK_DEPTH), +_const(MINMAX), +_const(POST_COLOR_MATRIX_COLOR_TABLE), +_const(POST_COLOR_MATRIX_RED_BIAS), +_const(POST_COLOR_MATRIX_GREEN_BIAS), +_const(POST_COLOR_MATRIX_BLUE_BIAS), +_const(POST_COLOR_MATRIX_ALPHA_BIAS), +_const(POST_COLOR_MATRIX_RED_SCALE), +_const(POST_COLOR_MATRIX_GREEN_SCALE), +_const(POST_COLOR_MATRIX_BLUE_SCALE), +_const(POST_COLOR_MATRIX_ALPHA_SCALE), +_const(POST_CONVOLUTION_COLOR_TABLE), +_const(POST_CONVOLUTION_RED_BIAS), +_const(POST_CONVOLUTION_GREEN_BIAS), +_const(POST_CONVOLUTION_BLUE_BIAS), +_const(POST_CONVOLUTION_ALPHA_BIAS), +_const(POST_CONVOLUTION_RED_SCALE), +_const(POST_CONVOLUTION_GREEN_SCALE), +_const(POST_CONVOLUTION_BLUE_SCALE), +_const(POST_CONVOLUTION_ALPHA_SCALE), and +_const(SEPARABLE_2D) +are available only if _arbstring(imaging) is returned from _cmnd(Get) +when called with the argument _const(EXTENSIONS). +.P +_arbconst(ACTIVE_TEXTURE), +_arbconst(CLIENT_ACTIVE_TEXTURE), and +_arbconst(MAX_TEXTURE_UNITS) are available only if +_arbstring(multitexture) is returned from _cmnd(Get) when called with the +argument _const(EXTENSIONS). +.P +When the _arbstring(multitexture) extension is supported, the following +parameters return the associated value for the active texture unit: +_const(CURRENT_RASTER_TEXTURE_COORDS), +_const(TEXTURE_1D), _const(TEXTURE_BINDING_1D), +_const(TEXTURE_2D), _const(TEXTURE_BINDING_2D), +_const(TEXTURE_3D), _const(TEXTURE_BINDING_3D), +_const(TEXTURE_GEN_S), +_const(TEXTURE_GEN_T), +_const(TEXTURE_GEN_R), +_const(TEXTURE_GEN_Q), +_const(TEXTURE_MATRIX), and +_const(TEXTURE_STACK_DEPTH). +Likewise, the following parameters return the associated value for the +active client texture unit: +_const(TEXTURE_COORD_ARRAY), +_const(TEXTURE_COORD_ARRAY_SIZE), +_const(TEXTURE_COORD_ARRAY_STRIDE), +_const(TEXTURE_COORD_ARRAY_TYPE). +.SH ERRORS +_const(INVALID_ENUM) is generated if _param1 is not an accepted value. +.P +_const(INVALID_OPERATION) is generated if _cmnd +is executed between the execution of _cmnd(Begin) +and the corresponding execution of _cmnd(End). +.P +.SH SEE ALSO +_cmnd(GetClipPlane), +_cmnd(GetColorTable), +_cmnd(GetColorTableParameter), +_cmnd(GetConvolutionFilter), +_cmnd(GetConvolutionParameter), +_cmnd(GetError), +_cmnd(GetHistogram), +_cmnd(GetHistogramParameter), +_cmnd(GetLight), +_cmnd(GetMap), +_cmnd(GetMaterial), +_cmnd(GetMinmax), +_cmnd(GetMinmaxParameter), +_cmnd(GetPixelMap), +_cmnd(GetPointerv), +_cmnd(GetPolygonStipple), +_cmnd(GetSeparableFilter), +_cmnd(GetString), +_cmnd(GetTexEnv), +_cmnd(GetTexGen), +_cmnd(GetTexImage), +_cmnd(GetTexLevelParameter), +_cmnd(GetTexParameter), +_cmnd(IsEnabled) |