PlanarReflection::PlanarReflection( osg::Camera * sceneCamera )
{
int w = 1024, h = 1024;
_sceneCamera = sceneCamera;
_texture = new osg::Texture2D;
_texture->setInternalFormat( GL_RGBA );
_texture->setSourceFormat( GL_RGBA );
_texture->setSourceType( GL_UNSIGNED_BYTE );
_texture->setTextureWidth( w );
_texture->setTextureHeight( h );
_texture->setFilter( osg::Texture::MIN_FILTER, osg::Texture::NEAREST );
_texture->setFilter( osg::Texture::MAG_FILTER, osg::Texture::NEAREST );
_textureProjectionMatrix = new osg::RefMatrix();
// set up the background color and clear mask.
setClearColor(osg::Vec4(1.0f, 1.0f, 1.0f, 0.0f));
setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
setViewport( 0,0,w,h );
setReferenceFrame( osg::Transform::ABSOLUTE_RF );
// set the camera to render before the main camera.
setRenderOrder(osg::Camera::PRE_RENDER);
attach( osg::Camera::COLOR_BUFFER, _texture );
setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
}
Refraction()
{
unsigned int rttSize = Settings::Manager::getInt("rtt size", "Water");
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);
setSmallFeatureCullingPixelSize(Settings::Manager::getInt("small feature culling pixel size", "Water"));
setName("RefractionCamera");
setCullMask(Mask_Effect|Mask_Scene|Mask_Terrain|Mask_Actor|Mask_ParticleSystem|Mask_Sky|Mask_Sun|Mask_Player|Mask_Lighting);
setNodeMask(Mask_RenderToTexture);
setViewport(0, 0, rttSize, rttSize);
// No need for Update traversal since the scene 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);
// No need for fog here, we are already applying fog on the water surface itself as well as underwater fog
// assign large value to effectively turn off fog
// shaders don't respect glDisable(GL_FOG)
osg::ref_ptr<osg::Fog> fog (new osg::Fog);
fog->setStart(10000000);
fog->setEnd(10000000);
getOrCreateStateSet()->setAttributeAndModes(fog, osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
mClipCullNode = new ClipCullNode;
addChild(mClipCullNode);
mRefractionTexture = new osg::Texture2D;
mRefractionTexture->setTextureSize(rttSize, rttSize);
mRefractionTexture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
mRefractionTexture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
mRefractionTexture->setInternalFormat(GL_RGB);
mRefractionTexture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
mRefractionTexture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
attach(osg::Camera::COLOR_BUFFER, mRefractionTexture);
mRefractionDepthTexture = new osg::Texture2D;
mRefractionDepthTexture->setSourceFormat(GL_DEPTH_COMPONENT);
mRefractionDepthTexture->setInternalFormat(GL_DEPTH_COMPONENT24);
mRefractionDepthTexture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
mRefractionDepthTexture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
mRefractionDepthTexture->setSourceType(GL_UNSIGNED_INT);
mRefractionDepthTexture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
mRefractionDepthTexture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
attach(osg::Camera::DEPTH_BUFFER, mRefractionDepthTexture);
}
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);
setSmallFeatureCullingPixelSize(Settings::Manager::getInt("small feature culling pixel size", "Water"));
setName("ReflectionCamera");
bool reflectActors = Settings::Manager::getBool("reflect actors", "Water");
setCullMask(Mask_Effect|Mask_Scene|Mask_Terrain|Mask_ParticleSystem|Mask_Sky|Mask_Player|Mask_Lighting|(reflectActors ? Mask_Actor : 0));
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);
}
