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From Wojciech Lewandowski, intial cut at new TrapezoidalShadowMap ShadowTechnique

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This commit is contained in:
Robert Osfield
2011-02-23 16:46:34 +00:00
parent 9cfb248b46
commit a25c4e4ab2
4 changed files with 935 additions and 45 deletions
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153
examples/osgshadow/osgshadow.cpp
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@@ -42,6 +42,7 @@
#include <osgShadow/SoftShadowMap>
#include <osgShadow/ParallelSplitShadowMap>
#include <osgShadow/LightSpacePerspectiveShadowMap>
#include <osgShadow/TrapezoidalShadowMap>
#include <osgShadow/StandardShadowMap>
#include <osgDB/ReadFile>
@@ -106,6 +107,35 @@ public:
};
class DumpShadowVolumesHandler : public osgGA::GUIEventHandler
{
public:
DumpShadowVolumesHandler( )
{
set( false );
}
bool get() { return _value; }
void set( bool value ) { _value = value; }
/** Deprecated, Handle events, return true if handled, false otherwise. */
virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa)
{
if (ea.getEventType() == osgGA::GUIEventAdapter::KEYUP)
{
if (ea.getKey() == 'D' )
{
set( true );
return true;
}
}
return false;
}
bool _value;
};
static int ReceivesShadowTraversalMask = 0x1;
static int CastsShadowTraversalMask = 0x2;
@@ -452,13 +482,13 @@ namespace ModelThree
osg::ref_ptr<osg::Geode> geode_2 = new osg::Geode;
osg::ref_ptr<osg::MatrixTransform> transform_2 = new osg::MatrixTransform;
transform_2->addChild(geode_2.get());
transform_2->setUpdateCallback(new osg::AnimationPathCallback(osg::Vec3(0, 0, 0), osg::Z_AXIS, osg::inDegrees(45.0f)));
// transform_2->setUpdateCallback(new osg::AnimationPathCallback(osg::Vec3(0, 0, 0), osg::Z_AXIS, osg::inDegrees(45.0f)));
scene->addChild(transform_2.get());
osg::ref_ptr<osg::Geode> geode_3 = new osg::Geode;
osg::ref_ptr<osg::MatrixTransform> transform_3 = new osg::MatrixTransform;
transform_3->addChild(geode_3.get());
transform_3->setUpdateCallback(new osg::AnimationPathCallback(osg::Vec3(0, 0, 0), osg::Z_AXIS, osg::inDegrees(-22.5f)));
// transform_3->setUpdateCallback(new osg::AnimationPathCallback(osg::Vec3(0, 0, 0), osg::Z_AXIS, osg::inDegrees(-22.5f)));
scene->addChild(transform_3.get());
const float radius = 0.8f;
@@ -571,13 +601,15 @@ int main(int argc, char** argv)
arguments.getApplicationUsage()->addCommandLineOption("--PolyOffset-Unit", "ParallelSplitShadowMap set PolygonOffset unit.");//ADEGLI
arguments.getApplicationUsage()->addCommandLineOption("--lispsm", "Select LightSpacePerspectiveShadowMap implementation.");
arguments.getApplicationUsage()->addCommandLineOption("--ViewBounds", "LiSPSM optimize shadow for view frustum (weakest option)");
arguments.getApplicationUsage()->addCommandLineOption("--CullBounds", "LiSPSM optimize shadow for bounds of culled objects in view frustum (better option).");
arguments.getApplicationUsage()->addCommandLineOption("--DrawBounds", "LiSPSM optimize shadow for bounds of predrawn pixels in view frustum (best & default).");
arguments.getApplicationUsage()->addCommandLineOption("--mapres", "LiSPSM texture resolution.");
arguments.getApplicationUsage()->addCommandLineOption("--maxFarDist", "LiSPSM max far distance to shadow.");
arguments.getApplicationUsage()->addCommandLineOption("--moveVCamFactor", "LiSPSM move the virtual frustum behind the real camera, (also back ground object can cast shadow).");
arguments.getApplicationUsage()->addCommandLineOption("--minLightMargin", "LiSPSM the same as --moveVCamFactor.");
arguments.getApplicationUsage()->addCommandLineOption("--tsm", "Select TrapezoidalShadowMap implementation.");
arguments.getApplicationUsage()->addCommandLineOption("--msm", "Select MinimalShadowMap implementation.");
arguments.getApplicationUsage()->addCommandLineOption("--ViewBounds", "MSM, LiSPSM & TSM optimize shadow for view frustum (weakest option)");
arguments.getApplicationUsage()->addCommandLineOption("--CullBounds", "MSM, LiSPSM & TSM optimize shadow for bounds of culled objects in view frustum (better option).");
arguments.getApplicationUsage()->addCommandLineOption("--DrawBounds", "MSM, LiSPSM & TSM optimize shadow for bounds of predrawn pixels in view frustum (best & default).");
arguments.getApplicationUsage()->addCommandLineOption("--mapres", "MSM, LiSPSM & TSM texture resolution.");
arguments.getApplicationUsage()->addCommandLineOption("--maxFarDist", "MSM, LiSPSM & TSM max far distance to shadow.");
arguments.getApplicationUsage()->addCommandLineOption("--moveVCamFactor", "MSM, LiSPSM & TSM move the virtual frustum behind the real camera, (also back ground object can cast shadow).");
arguments.getApplicationUsage()->addCommandLineOption("--minLightMargin", "MSM, LiSPSM t& TSM the same as --moveVCamFactor.");
arguments.getApplicationUsage()->addCommandLineOption("-1", "Use test model one.");
arguments.getApplicationUsage()->addCommandLineOption("-2", "Use test model two.");
@@ -660,6 +692,7 @@ int main(int argc, char** argv)
shadowedScene->setReceivesShadowTraversalMask(ReceivesShadowTraversalMask);
shadowedScene->setCastsShadowTraversalMask(CastsShadowTraversalMask);
osg::ref_ptr<osgShadow::MinimalShadowMap> msm = NULL;
if (arguments.read("--sv"))
{
// hint to tell viewer to request stencil buffer when setting up windows
@@ -731,45 +764,32 @@ int main(int argc, char** argv)
osg::ref_ptr<osgShadow::SoftShadowMap> sm = new osgShadow::SoftShadowMap;
shadowedScene->setShadowTechnique(sm.get());
}
else if ( arguments.read("--lispsm") )
else if ( arguments.read("--lispsm") )
{
osg::ref_ptr<osgShadow::MinimalShadowMap> sm = NULL;
if( arguments.read( "--ViewBounds" ) )
sm = new osgShadow::LightSpacePerspectiveShadowMapVB;
msm = new osgShadow::LightSpacePerspectiveShadowMapVB;
else if( arguments.read( "--CullBounds" ) )
sm = new osgShadow::LightSpacePerspectiveShadowMapCB;
msm = new osgShadow::LightSpacePerspectiveShadowMapCB;
else // if( arguments.read( "--DrawBounds" ) ) // default
sm = new osgShadow::LightSpacePerspectiveShadowMapDB;
shadowedScene->setShadowTechnique( sm.get() );
if( sm.valid() )
{
while( arguments.read("--debugHUD") )
sm->setDebugDraw( true );
float minLightMargin = 10.f;
float maxFarPlane = 0;
unsigned int texSize = 1024;
unsigned int baseTexUnit = 0;
unsigned int shadowTexUnit = 1;
while ( arguments.read("--moveVCamFactor", minLightMargin ) );
while ( arguments.read("--minLightMargin", minLightMargin ) );
while ( arguments.read("--maxFarDist", maxFarPlane ) );
while ( arguments.read("--mapres", texSize ));
while ( arguments.read("--baseTextureUnit", baseTexUnit) );
while ( arguments.read("--shadowTextureUnit", shadowTexUnit) );
sm->setMinLightMargin( minLightMargin );
sm->setMaxFarPlane( maxFarPlane );
sm->setTextureSize( osg::Vec2s( texSize, texSize ) );
sm->setShadowTextureCoordIndex( shadowTexUnit );
sm->setShadowTextureUnit( shadowTexUnit );
sm->setBaseTextureCoordIndex( baseTexUnit );
sm->setBaseTextureUnit( baseTexUnit );
}
msm = new osgShadow::LightSpacePerspectiveShadowMapDB;
}
else if( arguments.read("--tsm") )
{
if( arguments.read( "--ViewBounds" ) )
msm = new osgShadow::TrapezoidalShadowMapVB;
else if( arguments.read( "--CullBounds" ) )
msm = new osgShadow::TrapezoidalShadowMapCB;
else // if( arguments.read( "--DrawBounds" ) )
msm = new osgShadow::TrapezoidalShadowMapDB;
}
else if( arguments.read("--msm") )
{
if( arguments.read( "--ViewBounds" ) )
msm = new osgShadow::MinimalShadowMap;
else if( arguments.read( "--CullBounds" ) )
msm = new osgShadow::MinimalCullBoundsShadowMap;
else // if( arguments.read( "--DrawBounds" ) ) // default
msm = new osgShadow::MinimalDrawBoundsShadowMap;
}
else /* if (arguments.read("--sm")) */
{
@@ -781,6 +801,34 @@ int main(int argc, char** argv)
sm->setTextureSize(osg::Vec2s(mapres,mapres));
}
if( msm )// Set common MSM & TSM & LISPSM arguments
{
shadowedScene->setShadowTechnique( msm.get() );
while( arguments.read("--debugHUD") )
msm->setDebugDraw( true );
float minLightMargin = 10.f;
float maxFarPlane = 0;
unsigned int texSize = 1024;
unsigned int baseTexUnit = 0;
unsigned int shadowTexUnit = 1;
while ( arguments.read("--moveVCamFactor", minLightMargin ) );
while ( arguments.read("--minLightMargin", minLightMargin ) );
while ( arguments.read("--maxFarDist", maxFarPlane ) );
while ( arguments.read("--mapres", texSize ));
while ( arguments.read("--baseTextureUnit", baseTexUnit) );
while ( arguments.read("--shadowTextureUnit", shadowTexUnit) );
msm->setMinLightMargin( minLightMargin );
msm->setMaxFarPlane( maxFarPlane );
msm->setTextureSize( osg::Vec2s( texSize, texSize ) );
msm->setShadowTextureCoordIndex( shadowTexUnit );
msm->setShadowTextureUnit( shadowTexUnit );
msm->setBaseTextureCoordIndex( baseTexUnit );
msm->setBaseTextureUnit( baseTexUnit );
}
osg::ref_ptr<osg::Node> model = osgDB::readNodeFiles(arguments);
if (model.valid())
{
@@ -857,7 +905,10 @@ int main(int argc, char** argv)
viewer.setSceneData(shadowedScene.get());
osg::ref_ptr< DumpShadowVolumesHandler > dumpShadowVolumes = new DumpShadowVolumesHandler;
viewer.addEventHandler(new ChangeFOVHandler(viewer.getCamera()));
viewer.addEventHandler( dumpShadowVolumes.get() );
// create the windows and run the threads.
viewer.realize();
@@ -942,6 +993,20 @@ int main(int argc, char** argv)
ls->getLight()->setDirection(lightDir);
}
if( dumpShadowVolumes->get() )
{
dumpShadowVolumes->set( false );
static int dumpFileNo = 0;
dumpFileNo ++;
char filename[256];
std::sprintf( filename, "shadowDump%d.osg", dumpFileNo );
osgShadow::MinimalShadowMap * msm = dynamic_cast<osgShadow::MinimalShadowMap*>( shadowedScene->getShadowTechnique() );
if( msm ) msm->setDebugDump( filename );
}
viewer.frame();
}