FGFS-4.1/OpenSceneGraph
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Added support for user defined setting of the shadow texture unit

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This commit is contained in:
Robert Osfield
2011-08-24 19:38:58 +00:00
parent 26e2106636
commit 0d3169f645
3 changed files with 46 additions and 13 deletions
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24
include/osgShadow/ViewDependentShadowMap
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@@ -140,21 +140,29 @@ class OSGSHADOW_EXPORT ViewDependentShadowMap : public ShadowTechnique
ViewDependentData* getViewDependentData(osgUtil::CullVisitor* cv);
virtual void createShaders();
virtual bool selectActiveLights(osgUtil::CullVisitor* cv, ViewDependentData* vdd) const;
virtual osg::Polytope computeLightViewFrustumPolytope(Frustum& frustum, LightData& positionedLight);
/** Set the texture unit that the first shadow map will be placed on, if mulitple shadow maps are
* required then each shadow map will use a allocated a unit relative to this base texture unit.*/
void setBaseShadowTextureUnit(unsigned int unit) { _baseShadowTextureUnit = unit; }
/** Get the texture unit that the first shadow map will be placed on.*/
unsigned int getBaseShadowTextureUnit() const { return _baseShadowTextureUnit; }
enum ShadowMapProjectionHint
{
ORTHOGRAPHIC_SHADOW_MAP,
PERSPECTIVE_SHADOW_MAP
};
void setShadowMapProjectionHint(ShadowMapProjectionHint hint) { _shadowMapProjectionHint = hint; }
ShadowMapProjectionHint getShadowMapProjectionHint() const { return _shadowMapProjectionHint; }
virtual void createShaders();
virtual bool selectActiveLights(osgUtil::CullVisitor* cv, ViewDependentData* vdd) const;
virtual osg::Polytope computeLightViewFrustumPolytope(Frustum& frustum, LightData& positionedLight);
virtual bool computeShadowCameraSettings(Frustum& frustum, LightData& positionedLight, osg::Camera* camera);
virtual bool adjustPerspectiveShadowMapCameraSettings(osgUtil::RenderStage* renderStage, Frustum& frustum, LightData& positionedLight, osg::Camera* camera);
@@ -179,6 +187,8 @@ protected:
OpenThreads::Mutex _viewDependentDataMapMutex;
ViewDependentDataMap _viewDependentDataMap;
unsigned int _baseShadowTextureUnit;
osg::ref_ptr<osg::StateSet> _shadowRecievingPlaceholderStateSet;
osg::ref_ptr<osg::StateSet> _shadowCastingStateSet;