Modifications for Varrier and Alioscopy
From Immersive Visualization Lab Wiki
Changes made for the implementation of varrier and alioscopy under covise on kaustalio:
OpenSceneGraph-2.8 Files Modified
covise/extern_libs/src/OpenSceneGraph/include/osg/DisplaySettings
in class OSG_EXPORT DisplaySettings : public osg::Referenced
enum StereoMode
{
QUAD_BUFFER,
ANAGLYPHIC,
HORIZONTAL_SPLIT,
VERTICAL_SPLIT,
LEFT_EYE,
RIGHT_EYE,
HORIZONTAL_INTERLACE,
VERTICAL_INTERLACE,
CHECKERBOARD,
VARRIER, // ADDED FOR VARRIER
ALIOSCOPY // ADDED FOR ALIOSCOPY
};
covise/extern_libs/src/OpenSceneGraph/include/osgUtil/SceneView
include added:
#include </home/covise/covise/extern_libs/include/VarrierCombiner.h> #include </home/covise/covise/extern_libs/include/coInterleaver.h>
in struct ComputeStereoMatricesCallback:public osg::Referenced of the SceneView Class, following functions added:
virtual osg::Matrixd computeEyeProjection(int i) const
{
(void)i;
return osg::Matrixd();
}
virtual osg::Matrixd computeEyeView(int i) const
{
(void)i;
return osg::Matrixd();
}
in class OSGUTIL_EXPORT SceneView : public osg::Object, public osg::CullSettings
public inline functions added:
inline osg::Matrixd computeEyeProjection(int i) const
{
if (_computeStereoMatricesCallback.valid()) return _computeStereoMatricesCallback->computeEyeProjection(i);
else return osg::Matrixd();
}
inline osg::Matrixd computeEyeView(int i) const
{
if (_computeStereoMatricesCallback.valid()) return _computeStereoMatricesCallback->computeEyeView(i);
else return osg::Matrixd();
}
public functions added:
static void setVarrierTestPattern(bool b);
static bool isVarrierTestPattern();
static void toggleAlioscopyDebug();
protected variables added:
osg::ref_ptr<osgUtil::CullVisitor> * _cullVisitorAlioscopy;
osg::ref_ptr<osgUtil::StateGraph> * _rendergraphAlioscopy;
osg::ref_ptr<osgUtil::RenderStage> * _renderStageAlioscopy;
static bool _varrierTestPattern;
static VarrierCombiner** _varrier;
static float _alioscopyDebug;
static il_context ** _alioscopyContext;
static il_display ** _alioscopyDisplay;
static int _alioscopyEyes;
static float _alioscopyIPD;
static float _alioscopyIPDmm;
static float _alioscopyViewDistance;
float * _alioscopyEyePosition;
int _delayCount; // HACK WARNING: why is this necessary? tried putting this in ::init() but wouldn't get called
covise/extern_libs/src/OpenSceneGraph/src/osgViewer/GraphicsWindowX11.cpp
in bool GraphicsWindowX11::createWindow(): added code to force override redirect.
swatt.background_pixel = 0;
swatt.border_pixel = 0;
swatt.event_mask = 0;
unsigned long mask = CWBackPixel | CWBorderPixel | CWEventMask | CWColormap;
// START OF VARRIER ADDED CODE
bool overrideRedirect = false;
char * override = getenv("OSG_OVERRIDE_REDIRECT");
if(override != NULL && (std::string(override) == "1" || std::string(override) == "true"))
{
overrideRedirect = true;
}
if (overrideRedirect)
{
swatt.override_redirect = true;
mask |= CWOverrideRedirect;
}
_window = XCreateWindow( _display, _parent, ......
Added to fix title bars showing up randomly on some nodes. Not good to use on master node. The following:
if($HOST != "vellum") then setenv OSG_OVERRIDE_REDIRECT 1 endif
at the end of .cshrc will make it only work on tile nodes. NOTE: using this flag reverses the right and left eye in varrier, don't ask me why.
covise/extern_libs/src/OpenSceneGraph/src/osg/DisplaySettings.cpp
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 | VARRIER"); // VARRIER ADDED
in void DisplaySettings::readEnvironmentalVariables()
if( (ptr = getenv("OSG_STEREO_MODE")) != 0)
{
if (strcmp(ptr,"QUAD_BUFFER")==0)
{
_stereoMode = QUAD_BUFFER;
}
......
else if (strcmp(ptr,"VARRIER")==0)
{
_stereoMode = VARRIER;
}
}
in void DisplaySettings::readCommandLine(ArgumentParser& arguments)
if (arguments.getApplicationUsage())
{
arguments.getApplicationUsage()->addCommandLineOption("--display <type>","MONITOR | POWERWALL | REALITY_CENTER | HEAD_MOUNTED_DISPLAY");
arguments.getApplicationUsage()->addCommandLineOption("--stereo","Use default stereo mode which is ANAGLYPHIC if not overriden by environmental variable");
arguments.getApplicationUsage()->addCommandLineOption("--stereo <mode>","ANAGLYPHIC | QUAD_BUFFER | HORIZONTAL_SPLIT | VERTICAL_SPLIT | VARRIER | LEFT_EYE | RIGHT_EYE | HORIZONTAL_INTERLACE | VERTICAL_INTERLACE | CHECKERBOARD | ON | OFF "); // VARRIER ADDED
......
while ((pos=arguments.find("--stereo"))!=0)
{
if (arguments.match(pos+1,"ANAGLYPHIC")) { arguments.remove(pos,2); _stereo = true;_stereoMode = ANAGLYPHIC; }
else if (arguments.match(pos+1,"QUAD_BUFFER")) { arguments.remove(pos,2); _stereo = true;_stereoMode = QUAD_BUFFER; }
else if (arguments.match(pos+1,"HORIZONTAL_SPLIT")) { arguments.remove(pos,2); _stereo = true;_stereoMode = HORIZONTAL_SPLIT; }
else if (arguments.match(pos+1,"VERTICAL_SPLIT")) { arguments.remove(pos,2); _stereo = true;_stereoMode = VERTICAL_SPLIT; }
else if (arguments.match(pos+1,"HORIZONTAL_INTERLACE")) { arguments.remove(pos,2); _stereo = true;_stereoMode = HORIZONTAL_INTERLACE; }
else if (arguments.match(pos+1,"VERTICAL_INTERLACE")) { arguments.remove(pos,2); _stereo = true;_stereoMode = VERTICAL_INTERLACE; }
else if (arguments.match(pos+1,"CHECKERBOARD")) { arguments.remove(pos,2); _stereo = true;_stereoMode = CHECKERBOARD; }
else if (arguments.match(pos+1,"VARRIER")) { arguments.remove(pos,2); _stereo = true;_stereoMode = VARRIER; } // ADDED FOR VARRIER
.....
covise/extern_libs/src/OpenSceneGraph/src/osgUtil/SceneView.cpp
added static init:
VarrierCombiner ** SceneView::_varrier = NULL; bool SceneView::_varrierTestPattern = false;
in SceneView::SceneView(DisplaySettings* ds): at end
_delayCount = 10;
in SceneView::SceneView(const SceneView& rhs, const osg::CopyOp& copyop): at end
_delayCount = rhs._delayCount;
in void SceneView::draw(): case added for switch(_displaySettings->getStereoMode())
case(osg::DisplaySettings::VARRIER):
{
enum {VARRIER_LEFT_EYE = 0, VARRIER_RIGHT_EYE = 1};
float screenLoc[60][9] = // screen locations from vellum.lua FIXME: read from file instead
{
{ -4.7547, 1.5459, 0.6620, -0.0992, -0.0000, -1.3263, -0.0000, 1.0000, -0.0000 },
.....
};
float line_screen[60][5] = {
//{ 536.85342, -10.46, 0.0244, -0.0004, 0.75 },
{ 536.85342, -10.445, 0.0231, 0.00075, 0.75 },
.....
};
int nodeLUT[15] = {14, 11, 8, 5, 2, 13, 10, 7, 4, 1, 12, 9, 6, 3, 0};
osg::notify(osg::DEBUG_INFO) << "osgUtil::SceneView in varrier mode called" << std::endl;
if (_delayCount >= 0)
{
--_delayCount;
if (_delayCount==0)
{
if(_varrier == NULL)
{
int maxContext = _renderInfo.getState()->getGraphicsContext()->getMaxContextID();
_varrier = new VarrierCombiner*[maxContext+1];
for(int i = 0; i <= maxContext; i++)
{
_varrier[i] = NULL;
}
}
}
}
else // call every time once init has been called
{
static int swidth = 0;
static int sheight = 0;
static float squality = 0.0;
int contextid = _renderInfo.getState()->getContextID();
// Initialize varrier combiner if not already initialized:
if (_varrier[contextid] == NULL)
{
swidth = int(getViewport()->width());
sheight = int(getViewport()->height());
char * qual = getenv("OSG_VARRIER_QUALITY");
if(qual == NULL)
{
squality = 1.0;
}
else
{
squality = atof(qual);
if(squality <= 0.0 || squality > 1.0)
{
squality = 1.0;
}
}
osg::notify(osg::DEBUG_INFO) << "viewport size: " << swidth << " x " << sheight << std::endl;
_varrier[contextid] = new VarrierCombiner(swidth, sheight, squality);
osg::notify(osg::DEBUG_INFO) << "initializing varrier in context: " << contextid << " with quality: " << squality << std::endl;
}
// Varrier coordinates are like OpenGL: x=right, y=up, z=out
// Get eye positions from OSG:
osg::Camera* camLeft = _renderStageLeft->getCamera();
osg::Camera* camRight = _renderStageRight->getCamera();
Vec3 leftEye, rightEye, center, up;
computeLeftEyeView(getViewMatrix()).getLookAt(leftEye,center, up);
computeRightEyeView(getViewMatrix()).getLookAt(rightEye,center, up);
// Rotate eyes 90 deg about x axis (Varrier uses y up coordinates):
Matrixd rot;
rot.makeRotate(90.0 * M_PI / 180.0, 1.0, 0.0, 0.0);
leftEye = rot * leftEye;
rightEye = rot * rightEye;
// Translate coordinate system to floor in center of screen circle:
leftEye[1] += 1120; leftEye[2] -= 1550;
rightEye[1] += 1120; rightEye[2] -= 1550;
// Convert eyes to float array and feet:
float eyeLeft[3];
float eyeRight[3];
const double MM_IN_FEET = 0.0032808399;
for (int i=0; i<3; ++i) eyeLeft[i] = leftEye[i] * MM_IN_FEET;
for (int i=0; i<3; ++i) eyeRight[i] = rightEye[i] * MM_IN_FEET;
osg::notify(osg::DEBUG_INFO) << "FEET: Left eye: " << eyeLeft[0] << ", " << eyeLeft[1] << ", " << eyeLeft[2] << std::endl;
osg::notify(osg::DEBUG_INFO) << "FEET: Right eye: " << eyeRight[0] << ", " << eyeRight[1] << ", " << eyeRight[2] << std::endl;
osg::Viewport * vport = getViewport();
vport->setViewport(vport->x(), vport->y(), swidth * squality , sheight * squality);
setViewport(vport);
// Get OpenGL viewport location on desktop:
int x = int(getViewport()->x());
int y = int(getViewport()->y());
int width = int(swidth);
int height = int(sheight);
osg::notify(osg::DEBUG_INFO) << "viewport: " << x << ", " << y << ", " << width << " x " << height << std::endl;
// Calculate which screen index is being rendered:
char hostname[33];
gethostname(hostname, 32);
int node;
int screen;
int quadrant;
sscanf(hostname, "vellum%d-10", &node);
--node;
if (node<0) node = 0; // for head node
else node = nodeLUT[node];
if (x==0 && y==0) quadrant = 0;
else if (x==0 && y>0) quadrant = 1;
else if (x>0 && y==0) quadrant = 2;
else quadrant = 3;
screen = node * 4 + (contextid * 2) + quadrant;
osg::notify(osg::DEBUG_INFO) << "rendering using varrier combiner on " << hostname << ", node " << node << ", screen " << screen << std::endl;
VarrierCombiner::Display varrierConfig;
varrierConfig.viewport_x = x;
varrierConfig.viewport_y = y;
varrierConfig.viewport_w = width;
varrierConfig.viewport_h = height;
varrierConfig.quality = squality;
// Create absolute points from vellum.lua values:
varrierConfig.screen_BL[0] = screenLoc[screen][0];
varrierConfig.screen_BL[1] = screenLoc[screen][1];
varrierConfig.screen_BL[2] = screenLoc[screen][2];
varrierConfig.screen_BR[0] = screenLoc[screen][0] + screenLoc[screen][3];
varrierConfig.screen_BR[1] = screenLoc[screen][1] + screenLoc[screen][4];
varrierConfig.screen_BR[2] = screenLoc[screen][2] + screenLoc[screen][5];
varrierConfig.screen_TL[0] = screenLoc[screen][0] + screenLoc[screen][6];
varrierConfig.screen_TL[1] = screenLoc[screen][1] + screenLoc[screen][7];
varrierConfig.screen_TL[2] = screenLoc[screen][2] + screenLoc[screen][8];
osg::notify(osg::DEBUG_INFO) <<
"screen - BL: " << varrierConfig.screen_BL[0] << ", " << varrierConfig.screen_BL[1] << ", " << varrierConfig.screen_BL[2] << ", " <<
"BR: " << varrierConfig.screen_BR[0] << ", " << varrierConfig.screen_BR[1] << ", " << varrierConfig.screen_BR[2] << ", " <<
"TL: " << varrierConfig.screen_TL[0] << ", " << varrierConfig.screen_TL[1] << ", " << varrierConfig.screen_TL[2] << ", " << std::endl;
varrierConfig.pitch = line_screen[screen][0];
varrierConfig.angle = line_screen[screen][1];
varrierConfig.thick = line_screen[screen][2];
varrierConfig.shift = line_screen[screen][3];
varrierConfig.cycle = line_screen[screen][4];
if( getDrawBufferValue() != GL_NONE)
{
_renderStageLeft->setDrawBuffer(getDrawBufferValue());
_renderStageLeft->setReadBuffer(getDrawBufferValue());
_renderStageRight->setDrawBuffer(getDrawBufferValue());
_renderStageRight->setReadBuffer(getDrawBufferValue());
}
// ensure that all color planes are active.
osg::ColorMask* cmask = static_cast<osg::ColorMask*>(_localStateSet->getAttribute(osg::StateAttribute::COLORMASK));
if (cmask)
{
cmask->setMask(true,true,true,true);
}
else
{
cmask = new osg::ColorMask(true,true,true,true);
_localStateSet->setAttribute(cmask);
}
_renderStageLeft->setColorMask(cmask);
_renderStageRight->setColorMask(cmask);
_renderInfo.getState()->getContextID();
osg::notify(osg::DEBUG_INFO) << "GL context ID: " << _renderInfo.getState()->getContextID() << std::endl;
//_localStateSet->setAttribute(getViewport());
_renderStageLeft->drawPreRenderStages(_renderInfo,previous);
_renderStageRight->drawPreRenderStages(_renderInfo,previous);
glPushAttrib(GL_ALL_ATTRIB_BITS);
// render left eye:
_varrier[contextid]->prepare(&varrierConfig, VARRIER_RIGHT_EYE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
osg::notify(osg::DEBUG_INFO) << "GL context ID: " << _renderInfo.getState()->getContextID() << std::endl;
_renderStageLeft->draw(getRenderInfo(),previous);
osg::notify(osg::DEBUG_INFO) << "After renderleft." << std::endl;
if (_varrierTestPattern)
{
glClearColor(0.0, 1.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
}
// render right eye:
_varrier[contextid]->prepare(&varrierConfig, VARRIER_LEFT_EYE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
_renderStageRight->draw(getRenderInfo(),previous);
osg::notify(osg::DEBUG_INFO) << "After renderright." << std::endl;
if (_varrierTestPattern)
{
glClearColor(1.0, 0.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
}
// combine eyes:
_varrier[contextid]->combine(&varrierConfig, eyeLeft, eyeRight);
osg::notify(osg::DEBUG_INFO) << "After combine." << std::endl;
glPopAttrib();
}
} // end varrier style
break;
in bool SceneView::getStats(Statistics& stats): case added
switch(_displaySettings->getStereoMode())
{
case(osg::DisplaySettings::QUAD_BUFFER):
case(osg::DisplaySettings::ANAGLYPHIC):
case(osg::DisplaySettings::HORIZONTAL_SPLIT):
case(osg::DisplaySettings::VERTICAL_SPLIT):
case(osg::DisplaySettings::VERTICAL_INTERLACE):
case(osg::DisplaySettings::HORIZONTAL_INTERLACE):
case(osg::DisplaySettings::VARRIER): // ADDED FOR VARRIER
{
bool resultLeft = _renderStageLeft->getStats(stats);
bool resultRight = _renderStageRight->getStats(stats);
return resultLeft && resultRight;
}
functions added:
void SceneView::setVarrierTestPattern(bool b)
{
_varrierTestPattern = b;
}
bool SceneView::isVarrierTestPattern()
{
return _varrierTestPattern;
}
NOTE: osg needs to link against the varrier library, thus it needs to be added to the linking operation. Adding it to (osgDir)/src/osgViewer/CMakeFiles/osgViewer.dir/link.txt worked for me.
.cshrc Changes
#sets varrier quality mode setenv OSG_VARRIER_QUALITY 0.5 #sets override flag for all but headnode if($HOST != "vellum") then setenv OSG_OVERRIDE_REDIRECT 1 endif
