328 lines
12 KiB
C++
328 lines
12 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osg/DisplaySettings>
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#include <osg/ArgumentParser>
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#include <osg/ApplicationUsage>
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#include <osg/ref_ptr>
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#include <algorithm>
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using namespace osg;
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using namespace std;
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DisplaySettings* DisplaySettings::instance()
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{
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static ref_ptr<DisplaySettings> s_displaySettings = new DisplaySettings;
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return s_displaySettings.get();
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}
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DisplaySettings::DisplaySettings(const DisplaySettings& vs):Referenced()
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{
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setDisplaySettings(vs);
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}
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DisplaySettings::~DisplaySettings()
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{
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}
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DisplaySettings& DisplaySettings::operator = (const DisplaySettings& vs)
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{
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if (this==&vs) return *this;
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setDisplaySettings(vs);
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return *this;
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}
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void DisplaySettings::setDisplaySettings(const DisplaySettings& vs)
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{
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_displayType = vs._displayType;
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_stereo = vs._stereo;
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_stereoMode = vs._stereoMode;
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_eyeSeparation = vs._eyeSeparation;
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_screenWidth = vs._screenWidth;
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_screenHeight = vs._screenHeight;
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_screenDistance = vs._screenDistance;
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_splitStereoHorizontalEyeMapping = vs._splitStereoHorizontalEyeMapping;
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_splitStereoHorizontalSeparation = vs._splitStereoHorizontalSeparation;
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_splitStereoVerticalEyeMapping = vs._splitStereoVerticalEyeMapping;
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_splitStereoVerticalSeparation = vs._splitStereoVerticalSeparation;
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_splitStereoAutoAdjustAspectRatio = vs._splitStereoAutoAdjustAspectRatio;
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_doubleBuffer = vs._doubleBuffer;
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_RGB = vs._RGB;
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_depthBuffer = vs._depthBuffer;
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_minimumNumberAlphaBits = vs._minimumNumberAlphaBits;
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_minimumNumberStencilBits = vs._minimumNumberStencilBits;
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_maxNumOfGraphicsContexts = vs._maxNumOfGraphicsContexts;
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}
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void DisplaySettings::merge(const DisplaySettings& vs)
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{
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if (_stereo || vs._stereo) _stereo = true;
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// need to think what to do about merging the stereo mode.
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if (_doubleBuffer || vs._doubleBuffer) _doubleBuffer = true;
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if (_RGB || vs._RGB) _RGB = true;
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if (_depthBuffer || vs._depthBuffer) _depthBuffer = true;
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if (vs._minimumNumberAlphaBits>_minimumNumberAlphaBits) _minimumNumberAlphaBits = vs._minimumNumberAlphaBits;
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if (vs._minimumNumberStencilBits>_minimumNumberStencilBits) _minimumNumberStencilBits = vs._minimumNumberStencilBits;
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}
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void DisplaySettings::setDefaults()
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{
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_displayType = MONITOR;
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_stereo = false;
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_stereoMode = ANAGLYPHIC;
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_eyeSeparation = 0.05f;
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_screenWidth = 0.325f;
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_screenHeight = 0.26f;
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_screenDistance = 0.5f;
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_splitStereoHorizontalEyeMapping = LEFT_EYE_LEFT_VIEWPORT;
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_splitStereoHorizontalSeparation = 0;
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_splitStereoVerticalEyeMapping = LEFT_EYE_TOP_VIEWPORT;
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_splitStereoVerticalSeparation = 0;
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_splitStereoAutoAdjustAspectRatio = true;
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_doubleBuffer = true;
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_RGB = true;
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_depthBuffer = true;
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_minimumNumberAlphaBits = 0;
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_minimumNumberStencilBits = 0;
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_maxNumOfGraphicsContexts = 3;
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}
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static ApplicationUsageProxy DisplaySetting_e0(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_DISPLAY_TYPE <type>","MONITOR | POWERWALL | REALITY_CENTER | HEAD_MOUNTED_DISPLAY");
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static ApplicationUsageProxy DisplaySetting_e1(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_STEREO_MODE <mode>","QUAD_BUFFER | ANAGLYPHIC | HORIZONTAL_SPLIT | VERTICAL_SPLIT | LEFT_EYE | RIGHT_EYE | VERTICAL_INTERLACE | HORIZONTAL_INTERLACE");
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static ApplicationUsageProxy DisplaySetting_e2(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_STEREO <mode>","OFF | ON");
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static ApplicationUsageProxy DisplaySetting_e3(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_EYE_SEPARATION <float>","physical distance between eyes");
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static ApplicationUsageProxy DisplaySetting_e4(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SCREEN_DISTANCE <float>","physical distance between eyes and screen");
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static ApplicationUsageProxy DisplaySetting_e5(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SCREEN_HEIGHT <float>","physical screen height");
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static ApplicationUsageProxy DisplaySetting_e6(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SCREEN_WIDTH <float>","physical screen width");
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static ApplicationUsageProxy DisplaySetting_e7(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SPLIT_STEREO_HORIZONTAL_EYE_MAPPING <mode>","LEFT_EYE_LEFT_VIEWPORT | LEFT_EYE_RIGHT_VIEWPORT");
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static ApplicationUsageProxy DisplaySetting_e8(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SPLIT_STEREO_HORIZONTAL_SEPARATION <float>","number of pixels between viewports");
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static ApplicationUsageProxy DisplaySetting_e9(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SPLIT_STEREO_VERTICAL_EYE_MAPPING <mode>","LEFT_EYE_TOP_VIEWPORT | LEFT_EYE_BOTTOM_VIEWPORT");
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static ApplicationUsageProxy DisplaySetting_e10(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SPLIT_STEREO_AUTO_ADJUST_ASPECT_RATIO <mode>","OFF | ON Default to ON to compenstate for the compression of the aspect ratio when viewing in split screen stereo. Note, if you are setting fovx and fovy explicityly OFF should be used.");
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static ApplicationUsageProxy DisplaySetting_e11(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_SPLIT_STEREO_VERTICAL_SEPARATION <float>","number of pixels between viewports");
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static ApplicationUsageProxy DisplaySetting_e12(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_MAX_NUMBER_OF_GRAPHICS_CONTEXTS <int>","maximum number of graphics contexts to be used with applications.");
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void DisplaySettings::readEnvironmentalVariables()
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{
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const char* ptr = 0;
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if ((ptr = getenv("OSG_DISPLAY_TYPE")) != 0)
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{
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if (strcmp(ptr,"MONITOR")==0)
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{
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_displayType = MONITOR;
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}
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else
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if (strcmp(ptr,"POWERWALL")==0)
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{
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_displayType = POWERWALL;
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}
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else
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if (strcmp(ptr,"REALITY_CENTER")==0)
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{
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_displayType = REALITY_CENTER;
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}
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else
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if (strcmp(ptr,"HEAD_MOUNTED_DISPLAY")==0)
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{
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_displayType = HEAD_MOUNTED_DISPLAY;
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}
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}
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if( (ptr = getenv("OSG_STEREO_MODE")) != 0)
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{
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if (strcmp(ptr,"QUAD_BUFFER")==0)
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{
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_stereoMode = QUAD_BUFFER;
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}
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else if (strcmp(ptr,"ANAGLYPHIC")==0)
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{
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_stereoMode = ANAGLYPHIC;
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}
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else if (strcmp(ptr,"HORIZONTAL_SPLIT")==0)
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{
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_stereoMode = HORIZONTAL_SPLIT;
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}
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else if (strcmp(ptr,"VERTICAL_SPLIT")==0)
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{
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_stereoMode = VERTICAL_SPLIT;
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}
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else if (strcmp(ptr,"LEFT_EYE")==0)
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{
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_stereoMode = LEFT_EYE;
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}
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else if (strcmp(ptr,"RIGHT_EYE")==0)
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{
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_stereoMode = RIGHT_EYE;
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}
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else if (strcmp(ptr,"HORIZONTAL_INTERLACE")==0)
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{
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_stereoMode = HORIZONTAL_INTERLACE;
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}
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else if (strcmp(ptr,"VERTICAL_INTERLACE")==0)
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{
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_stereoMode = VERTICAL_INTERLACE;
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}
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}
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if( (ptr = getenv("OSG_STEREO")) != 0)
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{
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if (strcmp(ptr,"OFF")==0)
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{
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_stereo = false;
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}
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else
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if (strcmp(ptr,"ON")==0)
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{
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_stereo = true;
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}
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}
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if( (ptr = getenv("OSG_EYE_SEPARATION")) != 0)
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{
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_eyeSeparation = atof(ptr);
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}
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if( (ptr = getenv("OSG_SCREEN_WIDTH")) != 0)
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{
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_screenWidth = atof(ptr);
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}
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if( (ptr = getenv("OSG_SCREEN_HEIGHT")) != 0)
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{
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_screenHeight = atof(ptr);
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}
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if( (ptr = getenv("OSG_SCREEN_DISTANCE")) != 0)
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{
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_screenDistance = atof(ptr);
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}
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if( (ptr = getenv("OSG_SPLIT_STEREO_HORIZONTAL_EYE_MAPPING")) != 0)
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{
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if (strcmp(ptr,"LEFT_EYE_LEFT_VIEWPORT")==0)
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{
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_splitStereoHorizontalEyeMapping = LEFT_EYE_LEFT_VIEWPORT;
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}
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else
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if (strcmp(ptr,"LEFT_EYE_RIGHT_VIEWPORT")==0)
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{
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_splitStereoHorizontalEyeMapping = LEFT_EYE_RIGHT_VIEWPORT;
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}
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}
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if( (ptr = getenv("OSG_SPLIT_STEREO_HORIZONTAL_SEPARATION")) != 0)
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{
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_splitStereoHorizontalSeparation = atoi(ptr);
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}
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if( (ptr = getenv("OSG_SPLIT_STEREO_VERTICAL_EYE_MAPPING")) != 0)
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{
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if (strcmp(ptr,"LEFT_EYE_TOP_VIEWPORT")==0)
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{
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_splitStereoVerticalEyeMapping = LEFT_EYE_TOP_VIEWPORT;
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}
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else
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if (strcmp(ptr,"LEFT_EYE_BOTTOM_VIEWPORT")==0)
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{
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_splitStereoVerticalEyeMapping = LEFT_EYE_BOTTOM_VIEWPORT;
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}
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}
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if( (ptr = getenv("OSG_SPLIT_STEREO_AUTO_ADJUST_ASPECT_RATIO")) != 0)
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{
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if (strcmp(ptr,"OFF")==0)
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{
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_splitStereoAutoAdjustAspectRatio = false;
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}
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else
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if (strcmp(ptr,"ON")==0)
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{
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_splitStereoAutoAdjustAspectRatio = true;
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}
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}
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if( (ptr = getenv("OSG_SPLIT_STEREO_VERTICAL_SEPARATION")) != 0)
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{
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_splitStereoVerticalSeparation = atoi(ptr);
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}
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if( (ptr = getenv("OSG_MAX_NUMBER_OF_GRAPHICS_CONTEXTS")) != 0)
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{
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_maxNumOfGraphicsContexts = atoi(ptr);
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}
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}
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void DisplaySettings::readCommandLine(ArgumentParser& arguments)
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{
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// report the usage options.
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if (arguments.getApplicationUsage())
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{
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arguments.getApplicationUsage()->addCommandLineOption("--display <type>","MONITOR | POWERWALL | REALITY_CENTER | HEAD_MOUNTED_DISPLAY");
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arguments.getApplicationUsage()->addCommandLineOption("--stereo","Use default stereo mode which is ANAGLYPHIC if not overriden by environmental variable");
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arguments.getApplicationUsage()->addCommandLineOption("--stereo <mode>","ANAGLYPHIC | QUAD_BUFFER | HORIZONTAL_SPLIT | VERTICAL_SPLIT | LEFT_EYE | RIGHT_EYE | ON | OFF ");
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arguments.getApplicationUsage()->addCommandLineOption("--rgba","Request a RGBA color buffer visual");
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arguments.getApplicationUsage()->addCommandLineOption("--stencil","Request a stencil buffer visual");
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}
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std::string str;
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while(arguments.read("--display",str))
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{
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if (str=="MONITOR") _displayType = MONITOR;
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else if (str=="POWERWALL") _displayType = POWERWALL;
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else if (str=="REALITY_CENTER") _displayType = REALITY_CENTER;
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else if (str=="HEAD_MOUNTED_DISPLAY") _displayType = HEAD_MOUNTED_DISPLAY;
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}
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int pos;
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while ((pos=arguments.find("--stereo"))!=0)
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{
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if (arguments.match(pos+1,"ANAGLYPHIC")) { arguments.remove(pos,2); _stereo = true;_stereoMode = ANAGLYPHIC; }
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else if (arguments.match(pos+1,"QUAD_BUFFER")) { arguments.remove(pos,2); _stereo = true;_stereoMode = QUAD_BUFFER; }
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else if (arguments.match(pos+1,"HORIZONTAL_SPLIT")) { arguments.remove(pos,2); _stereo = true;_stereoMode = HORIZONTAL_SPLIT; }
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else if (arguments.match(pos+1,"VERTICAL_SPLIT")) { arguments.remove(pos,2); _stereo = true;_stereoMode = VERTICAL_SPLIT; }
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else if (arguments.match(pos+1,"LEFT_EYE")) { arguments.remove(pos,2); _stereo = true;_stereoMode = LEFT_EYE; }
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else if (arguments.match(pos+1,"RIGHT_EYE")) { arguments.remove(pos,2); _stereo = true;_stereoMode = RIGHT_EYE; }
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else if (arguments.match(pos+1,"ON")) { arguments.remove(pos,2); _stereo = true; }
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else if (arguments.match(pos+1,"OFF")) { arguments.remove(pos,2); _stereo = false; }
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else { arguments.remove(pos); _stereo = true; }
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}
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while (arguments.read("--rgba"))
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{
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_RGB = true;
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_minimumNumberAlphaBits = 1;
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}
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while (arguments.read("--stencil"))
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{
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_minimumNumberStencilBits = 1;
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}
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}
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