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added api

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This commit is contained in:
scrawl 2012-03-24 20:41:23 +01:00
parent e212a32350
commit 9d30a139cc
2 changed files with 85 additions and 8 deletions
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73
apps/openmw/mwrender/occlusionquery.cpp
View File

@ -3,12 +3,16 @@
#include <OgreRenderSystem.h>
#include <OgreRoot.h>
#include <OgreBillboardSet.h>
#include <OgreHardwareOcclusionQuery.h>
#include <OgreEntity.h>
using namespace MWRender;
using namespace Ogre;
OcclusionQuery::OcclusionQuery(OEngine::Render::OgreRenderer* renderer, SceneNode* sunNode) :
mSunTotalAreaQuery(0), mSunVisibleAreaQuery(0), mActiveQuery(0), mDoQuery(0), mSunVisibility(0)
mSunTotalAreaQuery(0), mSunVisibleAreaQuery(0), mSingleObjectQuery(0), mActiveQuery(0),
mDoQuery(0), mSunVisibility(0), mQuerySingleObjectStarted(false),
mQuerySingleObjectRequested(false)
{
mRendering = renderer;
mSunNode = sunNode;
@ -18,8 +22,9 @@ OcclusionQuery::OcclusionQuery(OEngine::Render::OgreRenderer* renderer, SceneNod
mSunTotalAreaQuery = renderSystem->createHardwareOcclusionQuery();
mSunVisibleAreaQuery = renderSystem->createHardwareOcclusionQuery();
mSingleObjectQuery = renderSystem->createHardwareOcclusionQuery();
mSupported = (mSunTotalAreaQuery != 0) && (mSunVisibleAreaQuery != 0);
mSupported = (mSunTotalAreaQuery != 0) && (mSunVisibleAreaQuery != 0) && (mSingleObjectQuery != 0);
}
catch (Ogre::Exception e)
{
@ -47,6 +52,8 @@ OcclusionQuery::OcclusionQuery(OEngine::Render::OgreRenderer* renderer, SceneNod
mBBNode = mSunNode->getParentSceneNode()->createChildSceneNode();
mObjectNode = mRendering->getScene()->getRootSceneNode()->createChildSceneNode();
mBBQueryTotal = mRendering->getScene()->createBillboardSet(1);
mBBQueryTotal->setDefaultDimensions(150, 150);
mBBQueryTotal->createBillboard(Vector3::ZERO);
@ -61,6 +68,13 @@ OcclusionQuery::OcclusionQuery(OEngine::Render::OgreRenderer* renderer, SceneNod
mBBQueryVisible->setRenderQueueGroup(queue);
mBBNode->attachObject(mBBQueryVisible);
mBBQuerySingleObject = mRendering->getScene()->createBillboardSet(1);
mBBQuerySingleObject->setDefaultDimensions(10, 10);
mBBQuerySingleObject->createBillboard(Vector3::ZERO);
mBBQuerySingleObject->setMaterialName("QueryVisiblePixels");
mBBQuerySingleObject->setRenderQueueGroup(queue);
mObjectNode->attachObject(mBBQuerySingleObject);
mRendering->getScene()->addRenderObjectListener(this);
mDoQuery = true;
}
@ -70,6 +84,7 @@ OcclusionQuery::~OcclusionQuery()
RenderSystem* renderSystem = Root::getSingleton().getRenderSystem();
if (mSunTotalAreaQuery) renderSystem->destroyHardwareOcclusionQuery(mSunTotalAreaQuery);
if (mSunVisibleAreaQuery) renderSystem->destroyHardwareOcclusionQuery(mSunVisibleAreaQuery);
if (mSingleObjectQuery) renderSystem->destroyHardwareOcclusionQuery(mSingleObjectQuery);
}
bool OcclusionQuery::supported()
@ -100,11 +115,15 @@ void OcclusionQuery::notifyRenderSingleObject(Renderable* rend, const Pass* pass
mActiveQuery = mSunTotalAreaQuery;
else if (rend == mBBQueryVisible)
mActiveQuery = mSunVisibleAreaQuery;
else if (rend == mBBQuerySingleObject && mQuerySingleObjectRequested)
{
mQuerySingleObjectStarted = true;
mQuerySingleObjectRequested = false;
mActiveQuery = mSingleObjectQuery;
}
if (mActiveQuery != NULL)
{
mActiveQuery->beginOcclusionQuery();
}
}
}
@ -125,7 +144,9 @@ void OcclusionQuery::update()
// (may not happen on the same frame they are requested in)
mDoQuery = false;
if (!mSunTotalAreaQuery->isStillOutstanding() && !mSunVisibleAreaQuery->isStillOutstanding())
if (!mSunTotalAreaQuery->isStillOutstanding()
&& !mSunVisibleAreaQuery->isStillOutstanding()
&& !mSingleObjectQuery->isStillOutstanding())
{
unsigned int totalPixels;
unsigned int visiblePixels;
@ -144,7 +165,49 @@ void OcclusionQuery::update()
if (mSunVisibility > 1) mSunVisibility = 1;
}
if (mQuerySingleObjectStarted)
{
unsigned int visiblePixels;
mSingleObjectQuery->pullOcclusionQuery(&visiblePixels);
mBBQuerySingleObject->setVisible(false);
mObject->setRenderQueueGroup(mObjectOldRenderQueue);
mQuerySingleObjectStarted = false;
mQuerySingleObjectRequested = false;
}
mDoQuery = true;
}
}
void OcclusionQuery::occlusionTest(const Ogre::Vector3& position, Ogre::Entity* entity)
{
assert( !occlusionTestPending()
&& "Occlusion test still pending");
mBBQuerySingleObject->setVisible(true);
// we don't want the object to occlude itself
mObjectOldRenderQueue = entity->getRenderQueueGroup();
if (mObjectOldRenderQueue < RENDER_QUEUE_MAIN+2)
entity->setRenderQueueGroup(RENDER_QUEUE_MAIN+2);
mObjectNode->setPosition(position);
mQuerySingleObjectRequested = true;
}
bool OcclusionQuery::occlusionTestPending()
{
return (mQuerySingleObjectRequested || mQuerySingleObjectStarted);
}
bool OcclusionQuery::getTestResult()
{
assert( !occlusionTestPending()
&& "Occlusion test still pending");
return mTestResult;
}

20
apps/openmw/mwrender/occlusionquery.hpp
View File

@ -1,9 +1,15 @@
#ifndef _GAME_OCCLUSION_QUERY_H
#define _GAME_OCCLUSION_QUERY_H
#include <OgreHardwareOcclusionQuery.h>
#include <OgreRenderObjectListener.h>
namespace Ogre
{
class HardwareOcclusionQuery;
class Entity;
class SceneNode;
}
#include <openengine/ogre/renderer.hpp>
namespace MWRender
@ -49,22 +55,30 @@ namespace MWRender
private:
Ogre::HardwareOcclusionQuery* mSunTotalAreaQuery;
Ogre::HardwareOcclusionQuery* mSunVisibleAreaQuery;
Ogre::HardwareOcclusionQuery* mSingleObjectQuery;
Ogre::HardwareOcclusionQuery* mActiveQuery;
Ogre::BillboardSet* mBBQueryVisible;
Ogre::BillboardSet* mBBQueryTotal;
Ogre::BillboardSet* mBBQuerySingleObject;
Ogre::SceneNode* mSunNode;
Ogre::SceneNode* mBBNode;
float mSunVisibility;
Ogre::Entity* mObject;
Ogre::SceneNode* mObjectNode;
int mObjectOldRenderQueue;
bool mTestResult;
bool mSupported;
bool mDoQuery;
bool mQuerySingleObjectRequested;
bool mQuerySingleObjectStarted;
OEngine::Render::OgreRenderer* mRendering;
protected: