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Water: move reflection code to a new class

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This commit is contained in:
scrawl 2015-10-28 20:09:44 +01:00
parent ebdf25ccb9
commit 11c997d09d
1 changed files with 64 additions and 43 deletions
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107
apps/openmw/mwrender/water.cpp
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@ -352,7 +352,66 @@ private:
class Reflection : public osg::Camera class Reflection : public osg::Camera
{ {
public:
Reflection()
{
setRenderOrder(osg::Camera::PRE_RENDER);
setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
setReferenceFrame(osg::Camera::RELATIVE_RF);
setCullMask(Mask_Effect|Mask_Scene|Mask_Terrain|Mask_Actor|Mask_ParticleSystem|Mask_Sky|Mask_Player|(1<<16));
setNodeMask(Mask_RenderToTexture);
unsigned int rttSize = Settings::Manager::getInt("rtt size", "Water");
setViewport(0, 0, rttSize, rttSize);
// No need for Update traversal since the mSceneRoot is already updated as part of the main scene graph
// A double update would mess with the light collection (in addition to being plain redundant)
setUpdateCallback(new NoTraverseCallback);
mReflectionTexture = new osg::Texture2D;
mReflectionTexture->setInternalFormat(GL_RGB);
mReflectionTexture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
mReflectionTexture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
mReflectionTexture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
mReflectionTexture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
attach(osg::Camera::COLOR_BUFFER, mReflectionTexture);
// XXX: should really flip the FrontFace on each renderable instead of forcing clockwise.
osg::ref_ptr<osg::FrontFace> frontFace (new osg::FrontFace);
frontFace->setMode(osg::FrontFace::CLOCKWISE);
getOrCreateStateSet()->setAttributeAndModes(frontFace, osg::StateAttribute::ON);
mClipCullNode = new ClipCullNode;
addChild(mClipCullNode);
}
void setWaterLevel(float waterLevel)
{
setViewMatrix(osg::Matrix::translate(0,0,-waterLevel) * osg::Matrix::scale(1,1,-1) * osg::Matrix::translate(0,0,waterLevel));
mClipCullNode->setPlane(osg::Plane(osg::Vec3d(0,0,1), osg::Vec3d(0,0,waterLevel)));
}
void setScene(osg::Node* scene)
{
if (mScene)
mClipCullNode->removeChild(mScene);
mScene = scene;
mClipCullNode->addChild(scene);
}
osg::Texture2D* getReflectionTexture() const
{
return mReflectionTexture.get();
}
private:
osg::ref_ptr<osg::Texture2D> mReflectionTexture;
osg::ref_ptr<ClipCullNode> mClipCullNode;
osg::ref_ptr<osg::Node> mScene;
}; };
Water::Water(osg::Group *parent, osg::Group* sceneRoot, Resource::ResourceSystem *resourceSystem, osgUtil::IncrementalCompileOperation *ico, Water::Water(osg::Group *parent, osg::Group* sceneRoot, Resource::ResourceSystem *resourceSystem, osgUtil::IncrementalCompileOperation *ico,
@ -400,51 +459,13 @@ Water::Water(osg::Group *parent, osg::Group* sceneRoot, Resource::ResourceSystem
mParent->addChild(mRefraction); mParent->addChild(mRefraction);
// reflection // reflection
osg::ref_ptr<osg::Camera> reflectionCamera (new osg::Camera); mReflection = new Reflection();
reflectionCamera->setRenderOrder(osg::Camera::PRE_RENDER); mReflection->setWaterLevel(waterLevel);
reflectionCamera->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); mReflection->setScene(mSceneRoot);
reflectionCamera->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
reflectionCamera->setReferenceFrame(osg::Camera::RELATIVE_RF);
reflectionCamera->setCullMask(Mask_Effect|Mask_Scene|Mask_Terrain|Mask_Actor|Mask_ParticleSystem|Mask_Sky|Mask_Player|(1<<16));
reflectionCamera->setNodeMask(Mask_RenderToTexture);
unsigned int rttSize = Settings::Manager::getInt("rtt size", "Water");
reflectionCamera->setViewport(0, 0, rttSize, rttSize);
// No need for Update traversal since the mSceneRoot is already updated as part of the main scene graph
// A double update would mess with the light collection (in addition to being plain redundant)
reflectionCamera->setUpdateCallback(new NoTraverseCallback);
osg::ref_ptr<osg::Texture2D> reflectionTexture = new osg::Texture2D;
reflectionTexture->setInternalFormat(GL_RGB);
reflectionTexture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
reflectionTexture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
reflectionTexture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
reflectionTexture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
reflectionCamera->attach(osg::Camera::COLOR_BUFFER, reflectionTexture);
reflectionCamera->setViewMatrix(osg::Matrix::translate(0,0,-waterLevel) * osg::Matrix::scale(1,1,-1) * osg::Matrix::translate(0,0,waterLevel));
osg::ref_ptr<osg::MatrixTransform> reflectNode (new osg::MatrixTransform);
// XXX: should really flip the FrontFace on each renderable instead of forcing clockwise.
osg::ref_ptr<osg::FrontFace> frontFace (new osg::FrontFace);
frontFace->setMode(osg::FrontFace::CLOCKWISE);
reflectNode->getOrCreateStateSet()->setAttributeAndModes(frontFace, osg::StateAttribute::ON);
osg::ref_ptr<ClipCullNode> clipNode2 (new ClipCullNode);
clipNode2->setPlane(osg::Plane(osg::Vec3d(0,0,1), osg::Vec3d(0,0,waterLevel)));
reflectNode->addChild(clipNode2);
clipNode2->addChild(mSceneRoot);
reflectionCamera->addChild(reflectNode);
// TODO: add to waterNode so cameras don't get updated when water is hidden? // TODO: add to waterNode so cameras don't get updated when water is hidden?
mParent->addChild(reflectionCamera); mParent->addChild(mReflection);
// shader // shader
@ -471,7 +492,7 @@ Water::Water(osg::Group *parent, osg::Group* sceneRoot, Resource::ResourceSystem
shaderStateset->addUniform(new osg::Uniform("refractionDepthMap", 2)); shaderStateset->addUniform(new osg::Uniform("refractionDepthMap", 2));
shaderStateset->addUniform(new osg::Uniform("normalMap", 3)); shaderStateset->addUniform(new osg::Uniform("normalMap", 3));
shaderStateset->setTextureAttributeAndModes(0, reflectionTexture, osg::StateAttribute::ON); shaderStateset->setTextureAttributeAndModes(0, mReflection->getReflectionTexture(), osg::StateAttribute::ON);
shaderStateset->setTextureAttributeAndModes(1, mRefraction->getRefractionTexture(), osg::StateAttribute::ON); shaderStateset->setTextureAttributeAndModes(1, mRefraction->getRefractionTexture(), osg::StateAttribute::ON);
shaderStateset->setTextureAttributeAndModes(2, mRefraction->getRefractionDepthTexture(), osg::StateAttribute::ON); shaderStateset->setTextureAttributeAndModes(2, mRefraction->getRefractionDepthTexture(), osg::StateAttribute::ON);
shaderStateset->setTextureAttributeAndModes(3, normalMap, osg::StateAttribute::ON); shaderStateset->setTextureAttributeAndModes(3, normalMap, osg::StateAttribute::ON);