FGFS-4.1/OpenSceneGraph
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From Wojciech Lweandowski, added support for noew LispSM shadow technique (use --lispsm on CmdLine) and added IslandScene database (use -4 on CmdLine).

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This commit is contained in:
Robert Osfield
2008-09-23 09:59:23 +00:00
parent 55d4756d31
commit b1c93f05f6
5 changed files with 2229 additions and 15 deletions
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119
examples/osgshadow/osgshadow.cpp
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@@ -41,17 +41,22 @@
#include <osgShadow/ShadowMap>
#include <osgShadow/SoftShadowMap>
#include <osgShadow/ParallelSplitShadowMap>
#include <osgShadow/LightSpacePerspectiveShadowMap>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
#include <iostream>
// for the grid data..
#include "../osghangglide/terrain_coords.h"
const int ReceivesShadowTraversalMask = 0x1;
const int CastsShadowTraversalMask = 0x2;
// for the grid data..
#include "terrain_coords.h"
// for the model number four - island scene
#include "IslandScene.h"
static int ReceivesShadowTraversalMask = 0x1;
static int CastsShadowTraversalMask = 0x2;
namespace ModelOne
{
@@ -471,6 +476,10 @@ osg::Node* createTestModel(osg::ArgumentParser& arguments)
{
return ModelTwo::createModel(arguments);
}
else if (arguments.read("-4"))
{
return ModelFour::createModel(arguments);
}
else /*if (arguments.read("-3"))*/
{
return ModelThree::createModel(arguments);
@@ -490,11 +499,15 @@ int main(int argc, char** argv)
arguments.getApplicationUsage()->addCommandLineOption("--positionalLight", "Use a positional light.");
arguments.getApplicationUsage()->addCommandLineOption("--directionalLight", "Use a direction light.");
arguments.getApplicationUsage()->addCommandLineOption("--noUpdate", "Disable the updating the of light source.");
arguments.getApplicationUsage()->addCommandLineOption("--castsShadowMask", "Override default castsShadowMask (default - 0x2)");
arguments.getApplicationUsage()->addCommandLineOption("--receivesShadowMask", "Override default receivesShadowMask (default - 0x1)");
arguments.getApplicationUsage()->addCommandLineOption("--base", "Add a base geometry to test shadows.");
arguments.getApplicationUsage()->addCommandLineOption("--sv", "Select ShadowVolume implementation.");
arguments.getApplicationUsage()->addCommandLineOption("--ssm", "Select SoftShadowMap implementation.");
arguments.getApplicationUsage()->addCommandLineOption("--sm", "Select ShadowMap implementation.");
// arguments.getApplicationUsage()->addCommandLineOption("--pssm", "Select ParallelSplitShadowMap implementation.");
arguments.getApplicationUsage()->addCommandLineOption("--pssm", "Select ParallelSplitShadowMap implementation.");//ADEGLI
arguments.getApplicationUsage()->addCommandLineOption("--mapcount", "ParallelSplitShadowMap texture count.");//ADEGLI
arguments.getApplicationUsage()->addCommandLineOption("--mapres", "ParallelSplitShadowMap texture resolution.");//ADEGLI
@@ -505,10 +518,19 @@ int main(int argc, char** argv)
arguments.getApplicationUsage()->addCommandLineOption("--PolyOffset-Factor", "ParallelSplitShadowMap set PolygonOffset factor.");//ADEGLI
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("-1", "Use test model one.");
arguments.getApplicationUsage()->addCommandLineOption("-2", "Use test model two.");
arguments.getApplicationUsage()->addCommandLineOption("-3", "Use test model three.");
arguments.getApplicationUsage()->addCommandLineOption("-3", "Use test model three (default).");
arguments.getApplicationUsage()->addCommandLineOption("-4", "Use test model four - island scene.");
arguments.getApplicationUsage()->addCommandLineOption("--two-sided", "Use two-sided stencil extension for shadow volumes.");
arguments.getApplicationUsage()->addCommandLineOption("--two-pass", "Use two-pass stencil for shadow volumes.");
@@ -526,6 +548,9 @@ int main(int argc, char** argv)
while (arguments.read("--positionalLight")) postionalLight = true;
while (arguments.read("--directionalLight")) postionalLight = false;
while (arguments.read("--castsShadowMask", CastsShadowTraversalMask ));
while (arguments.read("--receivesShadowMask", ReceivesShadowTraversalMask ));
bool updateLightPosition = true;
while (arguments.read("--noUpdate")) updateLightPosition = false;
@@ -638,6 +663,46 @@ int main(int argc, char** argv)
osg::ref_ptr<osgShadow::SoftShadowMap> sm = new osgShadow::SoftShadowMap;
shadowedScene->setShadowTechnique(sm.get());
}
else if ( arguments.read("--lispsm") )
{
osg::ref_ptr<osgShadow::MinimalShadowMap> sm = NULL;
if( arguments.read( "--ViewBounds" ) )
sm = new osgShadow::LightSpacePerspectiveShadowMapVB;
else if( arguments.read( "--CullBounds" ) )
sm = 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 );
}
}
else /* if (arguments.read("--sm")) */
{
osg::ref_ptr<osgShadow::ShadowMap> sm = new osgShadow::ShadowMap;
@@ -646,7 +711,7 @@ int main(int argc, char** argv)
int mapres = 1024;
while (arguments.read("--mapres", mapres))
sm->setTextureSize(osg::Vec2s(mapres,mapres));
}
}
osg::ref_ptr<osg::Node> model = osgDB::readNodeFiles(arguments);
if (model.valid())
@@ -709,7 +774,8 @@ int main(int argc, char** argv)
ls->getLight()->setSpotCutoff(25.0f);
//set the LightSource, only for checking, there is only 1 light in the scene
dynamic_cast<osgShadow::ShadowMap*>(shadowedScene->getShadowTechnique())->setLight(ls.get());
osgShadow::ShadowMap* shadowMap = dynamic_cast<osgShadow::ShadowMap*>(shadowedScene->getShadowTechnique());
if( shadowMap ) shadowMap->setLight(ls.get());
}
if ( arguments.read("--coloured-light"))
@@ -740,13 +806,15 @@ int main(int argc, char** argv)
if (windows.empty()) return 1;
osgShadow::ShadowMap* sm = dynamic_cast<osgShadow::ShadowMap*>(shadowedScene->getShadowTechnique());
osg::ref_ptr<osg::Camera> hudCamera = sm->makeDebugHUD();
if( sm ) {
osg::ref_ptr<osg::Camera> hudCamera = sm->makeDebugHUD();
// set up cameras to rendering on the first window available.
hudCamera->setGraphicsContext(windows[0]);
hudCamera->setViewport(0,0,windows[0]->getTraits()->width, windows[0]->getTraits()->height);
// set up cameras to rendering on the first window available.
hudCamera->setGraphicsContext(windows[0]);
hudCamera->setViewport(0,0,windows[0]->getTraits()->width, windows[0]->getTraits()->height);
viewer.addSlave(hudCamera.get(), false);
viewer.addSlave(hudCamera.get(), false);
}
}
@@ -754,9 +822,34 @@ int main(int argc, char** argv)
while (!viewer.done())
{
{
osgShadow::MinimalShadowMap * msm = dynamic_cast<osgShadow::MinimalShadowMap*>( shadowedScene->getShadowTechnique() );
if( msm ) {
// If scene decorated by CoordinateSystemNode try to find localToWorld
// and set modellingSpaceToWorld matrix to optimize scene bounds computation
osg::NodePath np = viewer.getCoordinateSystemNodePath();
if( !np.empty() ) {
osg::CoordinateSystemNode * csn =
dynamic_cast<osg::CoordinateSystemNode *>( np.back() );
if( csn ) {
osg::Vec3d pos =
viewer.getCameraManipulator()->getMatrix().getTrans();
msm->setModellingSpaceToWorldTransform
( csn->computeLocalCoordinateFrame( pos ) );
}
}
}
}
if (updateLightPosition)
{
float t = viewer.getFrameStamp()->getSimulationTime();
if (postionalLight)
{
lightpos.set(bb.center().x()+sinf(t)*bb.radius(), bb.center().y() + cosf(t)*bb.radius(), bb.zMax() + bb.radius()*3.0f ,1.0f);