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106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
#ifndef _GAME_OCCLUSION_QUERY_H
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#define _GAME_OCCLUSION_QUERY_H
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#include <OgreRenderObjectListener.h>
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#include <OgreRenderQueueListener.h>
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namespace Ogre
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{
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class HardwareOcclusionQuery;
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class Entity;
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class SceneNode;
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}
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#include <openengine/ogre/renderer.hpp>
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namespace MWRender
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{
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///
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/// \brief Implements hardware occlusion queries on the GPU
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///
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class OcclusionQuery : public Ogre::RenderObjectListener, public Ogre::RenderQueueListener
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{
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public:
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OcclusionQuery(OEngine::Render::OgreRenderer*, Ogre::SceneNode* sunNode);
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~OcclusionQuery();
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/**
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* @return true if occlusion queries are supported on the user's hardware
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*/
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bool supported();
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/**
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* per-frame update
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*/
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void update(float duration);
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/**
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* request occlusion test for a billboard at the given position, omitting an entity
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* @param position of the billboard in ogre coordinates
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* @param object to exclude from the occluders
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*/
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void occlusionTest(const Ogre::Vector3& position, Ogre::SceneNode* object);
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/**
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* @return true if a request is still outstanding
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*/
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bool occlusionTestPending();
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/**
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* Checks if the objects held by this scenenode
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* can be considered as potential occluders
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* (which might not be the case when transparency is involved)
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* @param Scene node
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*/
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bool isPotentialOccluder(Ogre::SceneNode* node);
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/**
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* @return true if the object tested in the last request was occluded
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*/
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bool getTestResult();
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float getSunVisibility() const {return mSunVisibility;};
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void setSunNode(Ogre::SceneNode* node);
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private:
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Ogre::HardwareOcclusionQuery* mSunTotalAreaQuery;
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Ogre::HardwareOcclusionQuery* mSunVisibleAreaQuery;
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Ogre::HardwareOcclusionQuery* mSingleObjectQuery;
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Ogre::HardwareOcclusionQuery* mActiveQuery;
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Ogre::BillboardSet* mBBQueryVisible;
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Ogre::BillboardSet* mBBQueryTotal;
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Ogre::BillboardSet* mBBQuerySingleObject;
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Ogre::SceneNode* mSunNode;
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Ogre::SceneNode* mBBNode;
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Ogre::SceneNode* mBBNodeReal;
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float mSunVisibility;
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Ogre::SceneNode* mObjectNode;
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bool mWasVisible;
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bool mObjectWasVisible;
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bool mTestResult;
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bool mSupported;
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bool mDoQuery;
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bool mDoQuery2;
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bool mQuerySingleObjectRequested;
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bool mQuerySingleObjectStarted;
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OEngine::Render::OgreRenderer* mRendering;
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protected:
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virtual void notifyRenderSingleObject(Ogre::Renderable* rend, const Ogre::Pass* pass, const Ogre::AutoParamDataSource* source,
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const Ogre::LightList* pLightList, bool suppressRenderStateChanges);
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virtual void renderQueueEnded(Ogre::uint8 queueGroupId, const Ogre::String& invocation, bool& repeatThisInvocation);
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};
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}
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#endif
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