FGFS-4.1/OpenSceneGraph
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From Farshid Lashkari, "I noticed that the code for rendering vertical interlace, horizontal interlace, and checkerboard stereo are practically identical, except for the stipple pattern. I combined the code blocks for rendering the 3 stereo modes into a single block. I also fixed a small issue with retrieving stats in checkerboard stereo mode."

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This commit is contained in:
Robert Osfield 2009-11-20 12:32:51 +00:00
parent 010411e535
commit e107c86e1a
1 changed files with 16 additions and 168 deletions
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184
src/osgUtil/SceneView.cpp
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@ -1290,6 +1290,8 @@ void SceneView::draw()
}
break;
case(osg::DisplaySettings::VERTICAL_INTERLACE):
case(osg::DisplaySettings::HORIZONTAL_INTERLACE):
case(osg::DisplaySettings::CHECKERBOARD):
{
#if !defined(OSG_GLES1_AVAILABLE) && !defined(OSG_GLES2_AVAILABLE) && !defined(OSG_GL3_AVAILABLE)
if( 0 == ( _camera->getInheritanceMask() & DRAW_BUFFER) )
@ -1338,7 +1340,18 @@ void SceneView::draw()
glClear(GL_STENCIL_BUFFER_BIT);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
glStencilFunc(GL_ALWAYS, 1, ~0u);
glPolygonStipple(patternVertEven);
if(_displaySettings->getStereoMode() == osg::DisplaySettings::VERTICAL_INTERLACE)
{
glPolygonStipple(patternVertEven);
}
else if(_displaySettings->getStereoMode() == osg::DisplaySettings::HORIZONTAL_INTERLACE)
{
glPolygonStipple(patternHorzEven);
}
else
{
glPolygonStipple(patternCheckerboard);
}
getState()->applyMode(GL_POLYGON_STIPPLE,true);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
@ -1368,173 +1381,7 @@ void SceneView::draw()
_renderStageRight->draw(_renderInfo,previous);
glDisable(GL_STENCIL_TEST);
#else
osg::notify(osg::NOTICE)<<"Warning: SceneView::draw() - VERTICAL_INTERLACE stereo not supported."<<std::endl;
#endif
}
break;
case(osg::DisplaySettings::HORIZONTAL_INTERLACE):
{
#if !defined(OSG_GLES1_AVAILABLE) && !defined(OSG_GLES2_AVAILABLE) && !defined(OSG_GL3_AVAILABLE)
if( 0 == ( _camera->getInheritanceMask() & DRAW_BUFFER) )
{
_renderStageLeft->setDrawBuffer(_camera->getDrawBuffer());
_renderStageLeft->setReadBuffer(_camera->getDrawBuffer());
_renderStageRight->setDrawBuffer(_camera->getDrawBuffer());
_renderStageRight->setReadBuffer(_camera->getDrawBuffer());
}
_localStateSet->setAttribute(getViewport());
// 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);
_renderStageLeft->drawPreRenderStages(_renderInfo,previous);
_renderStageRight->drawPreRenderStages(_renderInfo,previous);
glEnable(GL_STENCIL_TEST);
if(_redrawInterlacedStereoStencilMask ||
_interlacedStereoStencilWidth != getViewport()->width() ||
_interlacedStereoStencilHeight != getViewport()->height() )
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(getViewport()->x(), getViewport()->width(), getViewport()->y(), getViewport()->height(), -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
getViewport()->apply(*state);
getState()->applyMode(GL_LIGHTING,false);
getState()->applyMode(GL_DEPTH_TEST,false);
glStencilMask(~0u);
glClear(GL_STENCIL_BUFFER_BIT);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
glStencilFunc(GL_ALWAYS, 1, ~0u);
glPolygonStipple(patternHorzEven);
getState()->applyMode(GL_POLYGON_STIPPLE,true);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glRecti(static_cast<GLint>(getViewport()->x()),
static_cast<GLint>(getViewport()->y()),
static_cast<GLint>(getViewport()->width()),
static_cast<GLint>(getViewport()->height()) );
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
getState()->applyMode(GL_POLYGON_STIPPLE,false);
getState()->applyMode(GL_LIGHTING,true);
getState()->applyMode(GL_DEPTH_TEST,true);
_redrawInterlacedStereoStencilMask = false;
_interlacedStereoStencilWidth = static_cast<int>(getViewport()->width());
_interlacedStereoStencilHeight = static_cast<int>(getViewport()->height());
}
_renderStageLeft->setClearMask(_renderStageLeft->getClearMask() & ~(GL_STENCIL_BUFFER_BIT));
_renderStageRight->setClearMask(_renderStageRight->getClearMask() & ~(GL_STENCIL_BUFFER_BIT|GL_COLOR_BUFFER_BIT));
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
glStencilFunc(GL_EQUAL, 0, ~0u);
_renderStageLeft->draw(_renderInfo,previous);
glStencilFunc(GL_NOTEQUAL, 0, ~0u);
_renderStageRight->draw(_renderInfo,previous);
glDisable(GL_STENCIL_TEST);
#else
osg::notify(osg::NOTICE)<<"Warning: SceneView::draw() - HORIZONTAL_INTERLACE stereo not supported."<<std::endl;
#endif
}
break;
case(osg::DisplaySettings::CHECKERBOARD):
{
#if !defined(OSG_GLES1_AVAILABLE) && !defined(OSG_GLES2_AVAILABLE) && !defined(OSG_GL3_AVAILABLE)
if( 0 == ( _camera->getInheritanceMask() & DRAW_BUFFER) )
{
_renderStageLeft->setDrawBuffer(_camera->getDrawBuffer());
_renderStageLeft->setReadBuffer(_camera->getDrawBuffer());
_renderStageRight->setDrawBuffer(_camera->getDrawBuffer());
_renderStageRight->setReadBuffer(_camera->getDrawBuffer());
}
_localStateSet->setAttribute(getViewport());
// 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);
_renderStageLeft->drawPreRenderStages(_renderInfo,previous);
_renderStageRight->drawPreRenderStages(_renderInfo,previous);
glEnable(GL_STENCIL_TEST);
if(_redrawInterlacedStereoStencilMask ||
_interlacedStereoStencilWidth != getViewport()->width() ||
_interlacedStereoStencilHeight != getViewport()->height() )
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(getViewport()->x(), getViewport()->width(), getViewport()->y(), getViewport()->height(), -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
getViewport()->apply(*state);
glDisable(GL_LIGHTING);
glDisable(GL_DEPTH_TEST);
glStencilMask(~0u);
glClear(GL_STENCIL_BUFFER_BIT);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
glStencilFunc(GL_ALWAYS, 1, ~0u);
glPolygonStipple(patternCheckerboard);
glEnable(GL_POLYGON_STIPPLE);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glRecti(static_cast<GLint>(getViewport()->x()),
static_cast<GLint>(getViewport()->y()),
static_cast<GLint>(getViewport()->width()),
static_cast<GLint>(getViewport()->height()) );
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glDisable(GL_POLYGON_STIPPLE);
glEnable(GL_LIGHTING);
glEnable(GL_DEPTH_TEST);
_redrawInterlacedStereoStencilMask = false;
_interlacedStereoStencilWidth = static_cast<int>(getViewport()->width());
_interlacedStereoStencilHeight = static_cast<int>(getViewport()->height());
}
_renderStageLeft->setClearMask(_renderStageLeft->getClearMask() & ~(GL_STENCIL_BUFFER_BIT));
_renderStageRight->setClearMask(_renderStageRight->getClearMask() & ~(GL_STENCIL_BUFFER_BIT|GL_COLOR_BUFFER_BIT));
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
glStencilFunc(GL_EQUAL, 0, ~0u);
_renderStageLeft->draw(_renderInfo,previous);
glStencilFunc(GL_NOTEQUAL, 0, ~0u);
_renderStageRight->draw(_renderInfo,previous);
glDisable(GL_STENCIL_TEST);
#else
osg::notify(osg::NOTICE)<<"Warning: SceneView::draw() - CHECKERBOARD stereo not supported."<<std::endl;
osg::notify(osg::NOTICE)<<"Warning: SceneView::draw() - VERTICAL_INTERLACE, HORIZONTAL_INTERLACE, and CHECKERBOARD stereo not supported."<<std::endl;
#endif
}
break;
@ -1759,6 +1606,7 @@ bool SceneView::getStats(Statistics& stats)
case(osg::DisplaySettings::VERTICAL_SPLIT):
case(osg::DisplaySettings::VERTICAL_INTERLACE):
case(osg::DisplaySettings::HORIZONTAL_INTERLACE):
case(osg::DisplaySettings::CHECKERBOARD):
{
bool resultLeft = _renderStageLeft->getStats(stats);
bool resultRight = _renderStageRight->getStats(stats);