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107 lines
4.3 KiB
C++
107 lines
4.3 KiB
C++
#include "refraction.hpp"
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#include <OgreCamera.h>
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#include <OgreTextureManager.h>
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#include <OgreSceneManager.h>
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#include <OgreHardwarePixelBuffer.h>
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#include <OgreRenderTarget.h>
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#include <OgreViewport.h>
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#include <OgreRoot.h>
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#include <extern/shiny/Main/Factory.hpp>
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#include "renderconst.hpp"
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namespace MWRender
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{
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Refraction::Refraction(Ogre::Camera *parentCamera)
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: mParentCamera(parentCamera)
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, mRenderActive(false)
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, mIsUnderwater(false)
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{
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mCamera = mParentCamera->getSceneManager()->createCamera("RefractionCamera");
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mParentCamera->getSceneManager()->addRenderQueueListener(this);
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Ogre::TexturePtr texture = Ogre::TextureManager::getSingleton().createManual("WaterRefraction",
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Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, Ogre::TEX_TYPE_2D, 512, 512, 0, Ogre::PF_R8G8B8, Ogre::TU_RENDERTARGET);
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mRenderTarget = texture->getBuffer()->getRenderTarget();
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Ogre::Viewport* vp = mRenderTarget->addViewport(mCamera);
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vp->setOverlaysEnabled(false);
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vp->setShadowsEnabled(false);
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vp->setVisibilityMask(RV_Actors + RV_Misc + RV_Statics + RV_StaticsSmall + RV_Terrain + RV_Sky);
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vp->setMaterialScheme("water_refraction");
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vp->setBackgroundColour (Ogre::ColourValue(0.18039, 0.23137, 0.25490));
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mRenderTarget->setAutoUpdated(true);
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mRenderTarget->addListener(this);
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}
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Refraction::~Refraction()
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{
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mRenderTarget->removeListener(this);
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Ogre::TextureManager::getSingleton().remove("WaterRefraction");
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mParentCamera->getSceneManager()->destroyCamera(mCamera);
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mParentCamera->getSceneManager()->removeRenderQueueListener(this);
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}
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void Refraction::preRenderTargetUpdate(const Ogre::RenderTargetEvent& evt)
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{
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mParentCamera->getParentSceneNode ()->needUpdate ();
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mCamera->setOrientation(mParentCamera->getDerivedOrientation());
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mCamera->setPosition(mParentCamera->getDerivedPosition());
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mCamera->setNearClipDistance(mParentCamera->getNearClipDistance());
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mCamera->setFarClipDistance(mParentCamera->getFarClipDistance());
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mCamera->setAspectRatio(mParentCamera->getAspectRatio());
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mCamera->setFOVy(mParentCamera->getFOVy());
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// for depth calculation, we want the original viewproj matrix _without_ the custom near clip plane.
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// since all we are interested in is depth, we only need the third row of the matrix.
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Ogre::Matrix4 projMatrix = mCamera->getProjectionMatrixWithRSDepth () * mCamera->getViewMatrix ();
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sh::Vector4* row3 = new sh::Vector4(projMatrix[2][0], projMatrix[2][1], projMatrix[2][2], projMatrix[2][3]);
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sh::Factory::getInstance ().setSharedParameter ("vpRow2Fix", sh::makeProperty<sh::Vector4> (row3));
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// enable clip plane here to take advantage of CPU culling for overwater or underwater objects
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mCamera->enableCustomNearClipPlane(mIsUnderwater ? mNearClipPlaneUnderwater : mNearClipPlane);
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mRenderActive = true;
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}
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void Refraction::postRenderTargetUpdate(const Ogre::RenderTargetEvent& evt)
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{
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mCamera->disableCustomNearClipPlane ();
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mRenderActive = false;
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}
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void Refraction::setHeight(float height)
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{
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mNearClipPlane = Ogre::Plane( -Ogre::Vector3(0,0,1), -(height + 5));
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mNearClipPlaneUnderwater = Ogre::Plane( Ogre::Vector3(0,0,1), height - 5);
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}
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void Refraction::renderQueueStarted (Ogre::uint8 queueGroupId, const Ogre::String &invocation, bool &skipThisInvocation)
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{
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// We don't want the sky to get clipped by custom near clip plane (the water plane)
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if (queueGroupId < 20 && mRenderActive)
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{
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mCamera->disableCustomNearClipPlane();
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Ogre::Root::getSingleton().getRenderSystem()->_setProjectionMatrix(mCamera->getProjectionMatrixRS());
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}
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}
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void Refraction::renderQueueEnded (Ogre::uint8 queueGroupId, const Ogre::String &invocation, bool &repeatThisInvocation)
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{
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if (queueGroupId < 20 && mRenderActive)
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{
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mCamera->enableCustomNearClipPlane(mIsUnderwater ? mNearClipPlaneUnderwater : mNearClipPlane);
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Ogre::Root::getSingleton().getRenderSystem()->_setProjectionMatrix(mCamera->getProjectionMatrixRS());
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}
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}
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void Refraction::setActive(bool active)
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{
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mRenderTarget->setActive(active);
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}
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}
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