FGFS-4.1/OpenSceneGraph
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Introduced --near-far-mode into osgshadow and ShadowSettings::setComputeNearFarModeOverride(..) to allow user control of how the cull traversal is optimized for computing the depth range of the shadow map.

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This commit is contained in:
Robert Osfield
2012-08-03 16:14:14 +00:00
parent 35816e6b25
commit fb83c2b061
4 changed files with 40 additions and 3 deletions
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20
examples/osgshadow/osgshadow.cpp
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@@ -741,6 +741,7 @@ int main(int argc, char** argv)
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.");
arguments.getApplicationUsage()->addCommandLineOption("--near-far-mode","COMPUTE_NEAR_USING_PRIMITIVES, COMPUTE_NEAR_FAR_USING_PRIMITIVES, COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES, DO_NOT_COMPUTE_NEAR_FAR");
// construct the viewer.
osgViewer::Viewer viewer(arguments);
@@ -840,6 +841,25 @@ int main(int argc, char** argv)
settings->setReceivesShadowTraversalMask(ReceivesShadowTraversalMask);
settings->setCastsShadowTraversalMask(CastsShadowTraversalMask);
std::string nearFarMode("");
if (arguments.read("--near-far-mode",nearFarMode))
{
if (nearFarMode=="COMPUTE_NEAR_USING_PRIMITIVES") settings->setComputeNearFarModeOverride(osg::CullSettings::COMPUTE_NEAR_USING_PRIMITIVES);
else if (nearFarMode=="COMPUTE_NEAR_FAR_USING_PRIMITIVES") settings->setComputeNearFarModeOverride(osg::CullSettings::COMPUTE_NEAR_FAR_USING_PRIMITIVES);
else if (nearFarMode=="DO_NOT_COMPUTE_NEAR_FAR") settings->setComputeNearFarModeOverride(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
else if (nearFarMode=="COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES") settings->setComputeNearFarModeOverride(osg::CullSettings::COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES);
OSG_NOTICE<<"ComputeNearFarModeOverride set to ";
switch(settings->getComputeNearFarModeOverride())
{
case(osg::CullSettings::COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES): OSG_NOTICE<<"COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES"; break;
case(osg::CullSettings::COMPUTE_NEAR_USING_PRIMITIVES): OSG_NOTICE<<"COMPUTE_NEAR_USING_PRIMITIVES"; break;
case(osg::CullSettings::COMPUTE_NEAR_FAR_USING_PRIMITIVES): OSG_NOTICE<<"COMPUTE_NEAR_FAR_USING_PRIMITIVES"; break;
case(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR): OSG_NOTICE<<"DO_NOT_COMPUTE_NEAR_FAR"; break;
}
OSG_NOTICE<<std::endl;
}
osg::ref_ptr<osgShadow::MinimalShadowMap> msm = NULL;
if (arguments.read("--no-shadows"))
{