osg::Node* addRefractStateSet(osg::Node* node)
{
osg::StateSet* stateset = new osg::StateSet();
osg::TextureCubeMap* reflectmap = readCubeMap();
stateset->setTextureAttributeAndModes( 0, reflectmap, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
stateset->setTextureAttributeAndModes( 1, reflectmap, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
osg::TexMat* texMat = new osg::TexMat;
stateset->setTextureAttribute(0, texMat);
// ---------------------------------------------------
// Vertex Program
// ---------------------------------------------------
osg::VertexProgram* vp = new osg::VertexProgram();
vp->setVertexProgram( vpstr );
vp->setProgramLocalParameter( 0, osg::Vec4( fresnel, fresnel, fresnel, 1.0f ) );
vp->setProgramLocalParameter( 1, osg::Vec4( refract, refract*refract, 0.0f, 0.0f ) );
stateset->setAttributeAndModes( vp, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
// ---------------------------------------------------
// fragment = refraction*(1-fresnel) + reflection*fresnel
// T0 = texture unit 0, refraction map
// T1 = texture unit 1, reflection map
// C.rgb = primary color, water color
// C.a = primary color, fresnel factor
// Cp = result from previous texture environment
// ---------------------------------------------------
// REPLACE function: Arg0
// = T0
osg::TexEnvCombine *te0 = new osg::TexEnvCombine;
te0->setCombine_RGB(osg::TexEnvCombine::REPLACE);
te0->setSource0_RGB(osg::TexEnvCombine::TEXTURE0);
te0->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
// INTERPOLATE function: Arg0 * (Arg2) + Arg1 * (1-Arg2)
// = T1 * C0.a + Cp * (1-C0.a)
osg::TexEnvCombine *te1 = new osg::TexEnvCombine;
// rgb = Cp + Ct
te1->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
te1->setSource0_RGB(osg::TexEnvCombine::TEXTURE1);
te1->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
te1->setSource1_RGB(osg::TexEnvCombine::PREVIOUS);
te1->setOperand1_RGB(osg::TexEnvCombine::SRC_COLOR);
te1->setSource2_RGB(osg::TexEnvCombine::PRIMARY_COLOR);
te1->setOperand2_RGB(osg::TexEnvCombine::SRC_COLOR);
stateset->setTextureAttributeAndModes(0, te0, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);
stateset->setTextureAttributeAndModes(1, te1, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);
osg::Group* group = new osg::Group;
group->addChild(node);
group->setCullCallback(new TexMatCallback(*texMat));
group->setStateSet( stateset );
return group;
}
void add_skybox_to_node(osg::ref_ptr<osg::ClearNode> mynode,
std::string posx_fname,
std::string negx_fname,
std::string posy_fname,
std::string negy_fname,
std::string posz_fname,
std::string negz_fname
)
{
osg::StateSet* stateset = new osg::StateSet();
osg::TexEnv* te = new osg::TexEnv;
te->setMode(osg::TexEnv::REPLACE);
stateset->setTextureAttributeAndModes(0, te, osg::StateAttribute::ON);
osg::TexGen *tg = new osg::TexGen;
tg->setMode(osg::TexGen::NORMAL_MAP);
stateset->setTextureAttributeAndModes(0, tg, osg::StateAttribute::ON);
osg::TexMat *tm = new osg::TexMat;
stateset->setTextureAttribute(0, tm);
osg::TextureCubeMap* skymap = readCubeMap(posx_fname,
negx_fname,
posy_fname,
negy_fname,
posz_fname,
negz_fname);
stateset->setTextureAttributeAndModes(0, skymap, osg::StateAttribute::ON);
stateset->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
stateset->setMode( GL_CULL_FACE, osg::StateAttribute::OFF );
// clear the depth to the far plane.
osg::Depth* depth = new osg::Depth;
depth->setFunction(osg::Depth::ALWAYS);
depth->setRange(1.0,1.0);
stateset->setAttributeAndModes(depth, osg::StateAttribute::ON );
stateset->setRenderBinDetails(-1,"RenderBin");
osg::ref_ptr<osg::Drawable> drawable = new osg::ShapeDrawable( new osg::Sphere(osg::Vec3(0.0f,0.0f,0.0f),500));
osg::ref_ptr<osg::Geode> geode = new osg::Geode();
geode->setCullingActive(false);
geode->setStateSet( stateset );
geode->addDrawable(drawable.get());
osg::ref_ptr<osg::Transform> transform = new MoveEarthySkyWithEyePointTransform();
transform->setCullingActive(false);
transform->addChild(geode.get());
// mynode.setRequiresClear(false);
mynode->setCullCallback(new TexMatCallback(*tm));
mynode->addChild(transform.get());
}
void SkyBoxComponent::Finished()
{
BaseClass::Finished();
osg::StateSet* stateset = mSkyboxGeode->getOrCreateStateSet();
osg::TextureCubeMap* skymap = readCubeMap(this);
if(skymap)
{
stateset->setTextureAttributeAndModes(0, skymap, osg::StateAttribute::ON);
}
}
osg::Node* SkyBox::createSkyBox(std::string name)
{
_name = name;
osg::StateSet* stateset = new osg::StateSet();
osg::TexEnv* te = new osg::TexEnv;
te->setMode(osg::TexEnv::REPLACE);
stateset->setTextureAttributeAndModes(0, te, osg::StateAttribute::ON);
osg::TexGen *tg = new osg::TexGen;
tg->setMode(osg::TexGen::NORMAL_MAP);
stateset->setTextureAttributeAndModes(0, tg, osg::StateAttribute::ON);
osg::TexMat *tm = new osg::TexMat;
stateset->setTextureAttribute(0, tm);
osg::TextureCubeMap* skymap = readCubeMap();
stateset->setTextureAttributeAndModes(0, skymap, osg::StateAttribute::ON);
stateset->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
stateset->setMode( GL_CULL_FACE, osg::StateAttribute::OFF );
// clear the depth to the far plane.
osg::Depth* depth = new osg::Depth;
depth->setFunction(osg::Depth::ALWAYS);
depth->setRange(1.0,1.0);
stateset->setAttributeAndModes(depth, osg::StateAttribute::ON );
stateset->setRenderBinDetails(6,"RenderBin");
osg::Drawable* drawable = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(0.0f,0.0f,0.0f),5));
osg::Geode* geode = new osg::Geode;
geode->setCullingActive(false);
geode->setStateSet( stateset );
geode->addDrawable(drawable);
osg::Transform* transform = new MoveEarthySkyWithEyePointTransform;
transform->setCullingActive(false);
transform->addChild(geode);
osg::ClearNode* clearNode = new osg::ClearNode;
// clearNode->setRequiresClear(false);
clearNode->setCullCallback(new TexMatCallback(*tm));
clearNode->addChild(transform);
return clearNode;
}
osg::Node* SkyBox::createSkyBox(const std::string &strImagePath)
{
osg::ref_ptr<osg::StateSet> stateset = new osg::StateSet();
osg::ref_ptr<osg::TexEnv> te = new osg::TexEnv;
te->setMode(osg::TexEnv::REPLACE);
stateset->setTextureAttributeAndModes(0, te, osg::StateAttribute::ON);
osg::ref_ptr<osg::TexGen> tg = new osg::TexGen;
tg->setMode(osg::TexGen::NORMAL_MAP);
stateset->setTextureAttributeAndModes(0, tg, osg::StateAttribute::ON);
osg::ref_ptr<osg::TexMat> tm = new osg::TexMat;
stateset->setTextureAttribute(0, tm);
osg::TextureCubeMap* skymap = readCubeMap(strImagePath);
stateset->setTextureAttributeAndModes(0, skymap, osg::StateAttribute::ON);
stateset->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
stateset->setMode( GL_CULL_FACE, osg::StateAttribute::OFF );
// clear the depth to the far plane.
osg::ref_ptr<osg::Depth> depth = new osg::Depth;
depth->setFunction(osg::Depth::ALWAYS);
depth->setRange(1.0,1.0);
stateset->setAttributeAndModes(depth, osg::StateAttribute::ON );
stateset->setRenderBinDetails(-1,"RenderBin");
osg::ref_ptr<osg::Drawable> drawable = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(0.0f,0.0f,0.0f),100));
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
geode->setCullingActive(false);
geode->setStateSet( stateset );
geode->addDrawable(drawable);
osg::ref_ptr<osg::Transform>transform = new MoveEarthySkyWithEyePointTransform;
transform->setCullingActive(false);
transform->addChild(geode);
osg::ref_ptr<osg::ClearNode> clearNode = new osg::ClearNode;
// clearNode->setRequiresClear(false);
clearNode->setCullCallback(new TexMatCallback(*tm));
clearNode->addChild(transform);
return clearNode.release();
}
SkyBoxComponent::SkyBoxComponent()
: BaseClass(new osg::ClearNode())
, mDrawables(new osg::Group())
{
Register(TextureUpId, &mTextureUp);
Register(TextureDownId, &mTextureDown);
Register(TextureNorthId, &mTextureNorth);
Register(TextureSouthId, &mTextureSouth);
Register(TextureEastId, &mTextureEast);
Register(TextureWestId, &mTextureWest);
osg::StateSet* stateset = new osg::StateSet();
osg::TexEnv* te = new osg::TexEnv;
te->setMode(osg::TexEnv::REPLACE);
stateset->setTextureAttributeAndModes(0, te, osg::StateAttribute::ON);
osg::TexGen *tg = new osg::TexGen;
tg->setMode(osg::TexGen::NORMAL_MAP);
stateset->setTextureAttributeAndModes(0, tg, osg::StateAttribute::ON);
osg::TexMat *tm = new osg::TexMat;
stateset->setTextureAttribute(0, tm);
osg::TextureCubeMap* skymap = readCubeMap(this);
if(skymap)
{
stateset->setTextureAttributeAndModes(0, skymap, osg::StateAttribute::ON);
}
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
stateset->setMode(GL_FOG,osg::StateAttribute::OFF);
stateset->setMode( GL_CULL_FACE, osg::StateAttribute::OFF );
/*osg::Shader* vShader = new osg::Shader(osg::Shader::VERTEX);
osg::Shader* fShader = new osg::Shader(osg::Shader::FRAGMENT);
const char vpstr[] =
"varying vec3 vTexCoord;\n"
"void main(void) {\n"
"gl_Position = ftransform(); vTexCoord = gl_Vertex.xyz;"
"}";
vShader->setShaderSource(vpstr);
const char fpstr[] =
"uniform samplerCube skyBox;\n"
"varying vec3 vTexCoord;\n"
"void main(void)\n"
"{\n"
" vec3 tex = vec3(vTexCoord.x, vTexCoord.y, -vTexCoord.z);\n"
" gl_FragColor = textureCube( skyBox, tex.xzy );\n"
" gl_FragColor.a = 0.0;\n"
"}";
fShader->setShaderSource(fpstr);
osg::Program* program = new osg::Program();
program->setName("SkyboxShader");
program->addShader(vShader);
program->addShader(fShader);
*/
// clear the depth to the far plane.
osg::Depth* depth = new osg::Depth;
depth->setFunction(osg::Depth::ALWAYS);
depth->setRange(1.0,1.0);
stateset->setAttributeAndModes(depth, osg::StateAttribute::ON );
stateset->setRenderBinDetails(-10000,"RenderBin");
osg::Drawable* drawable = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(0.0f,0.0f,0.0f),10000));
mSkyboxGeode = new osg::Geode;
mSkyboxGeode->setNodeMask(dtEntity::NodeMasks::VISIBLE);
mSkyboxGeode->setCullingActive(false);
mSkyboxGeode->setStateSet( stateset );
mSkyboxGeode->addDrawable(drawable);
osg::Transform* transform = new MoveEarthySkyWithEyePointTransform();
transform->setCullingActive(false);
transform->addChild(mSkyboxGeode);
osg::ClearNode* clearNode = static_cast<osg::ClearNode*>(GetNode());
clearNode->setRequiresClear(false);
clearNode->setCullCallback(new TexMatCallback(*tm));
clearNode->setNodeMask(0xFFFFFFFF);
clearNode->addChild(transform);
clearNode->addChild(mDrawables);
}