FGFS-4.1/OpenSceneGraph
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Added support for setting the MinimumShadowMapNearFarRatio.

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This commit is contained in:
Robert Osfield
2011-08-29 09:59:47 +00:00
parent 771075084b
commit 2d71a390d3
3 changed files with 12 additions and 2 deletions
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6
src/osgShadow/ViewDependentShadowMap.cpp
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@@ -522,8 +522,9 @@ void ViewDependentShadowMap::ViewDependentData::releaseGLObjects(osg::State* sta
//
ViewDependentShadowMap::ViewDependentShadowMap():
ShadowTechnique(),
_baseShadowTextureUnit(1),
_baseShadowTextureUnit(1),
_shadowMapProjectionHint(PERSPECTIVE_SHADOW_MAP),
_minimumShadowMapNearFarRatio(0.01),
_debugDraw(false)
{
_shadowRecievingPlaceholderStateSet = new osg::StateSet;
@@ -533,6 +534,7 @@ ViewDependentShadowMap::ViewDependentShadowMap(const ViewDependentShadowMap& vds
ShadowTechnique(vdsm,copyop),
_baseShadowTextureUnit(vdsm._baseShadowTextureUnit),
_shadowMapProjectionHint(vdsm._shadowMapProjectionHint),
_minimumShadowMapNearFarRatio(vdsm._minimumShadowMapNearFarRatio),
_debugDraw(vdsm._debugDraw)
{
_shadowRecievingPlaceholderStateSet = new osg::StateSet;
@@ -1581,7 +1583,7 @@ bool ViewDependentShadowMap::adjustPerspectiveShadowMapCameraSettings(osgUtil::R
double alpha = osg::DegreesToRadians(30.0);
double n = tan(alpha)*tan(osg::PI_2-gamma_v)*tan(osg::PI_2-gamma_v);
//double n = tan(alpha)*tan(osg::PI_2-gamma_v);
double min_n = osg::maximum(-1.0-eye_ls.y(), 0.01);
double min_n = osg::maximum(-1.0-eye_ls.y(), _minimumShadowMapNearFarRatio);
if (n<min_n)
{
OSG_INFO<<"Clamping n to eye point"<<std::endl;