C++ Technique::removeAllPasses方法代码示例

Ogre::Technique* GBufferSchemeHandler::handleSchemeNotFound(unsigned short schemeIndex, 
		const Ogre::String& schemeName, Ogre::Material* originalMaterial, unsigned short lodIndex, 
		const Ogre::Renderable* rend)
{
	Ogre::MaterialManager& matMgr = Ogre::MaterialManager::getSingleton();
	Ogre::String curSchemeName = matMgr.getActiveScheme();
	matMgr.setActiveScheme(Ogre::MaterialManager::DEFAULT_SCHEME_NAME);
	Ogre::Technique* originalTechnique = originalMaterial->getBestTechnique(lodIndex, rend);
	matMgr.setActiveScheme(curSchemeName);

	Ogre::Technique* gBufferTech = originalMaterial->createTechnique();
	gBufferTech->removeAllPasses();
	gBufferTech->setSchemeName(schemeName);

	Ogre::Technique* noGBufferTech = originalMaterial->createTechnique();
	noGBufferTech->removeAllPasses();
	noGBufferTech->setSchemeName("NoGBuffer");

	for (unsigned short i=0; i<originalTechnique->getNumPasses(); i++)
	{
		Ogre::Pass* originalPass = originalTechnique->getPass(i);
		PassProperties props = inspectPass(originalPass, lodIndex, rend);
		
		if (!props.isDeferred)
		{
			//Just copy the technique so it gets rendered regularly
			Ogre::Pass* clonePass = noGBufferTech->createPass();
			*clonePass = *originalPass;
			continue;
		}

		Ogre::Pass* newPass = gBufferTech->createPass();
		MaterialGenerator::Perm perm = getPermutation(props);

		const Ogre::MaterialPtr& templateMat = mMaterialGenerator.getMaterial(perm);
    	
		//We assume that the GBuffer technique contains only one pass. But its true.
		*newPass = *(templateMat->getTechnique(0)->getPass(0));
		fillPass(newPass, originalPass, props);    
	}
    
	return gBufferTech;
}

    Ogre::MaterialPtr MaterialGenerator::create(bool renderCompositeMap, bool displayCompositeMap)
    {
        assert(!renderCompositeMap || !displayCompositeMap);

        static int count = 0;
        std::stringstream name;
        name << "terrain/mat" << count++;

        if (!mShaders)
        {
            Ogre::MaterialPtr mat = Ogre::MaterialManager::getSingleton().create(name.str(),
                                                               Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
            Ogre::Technique* technique = mat->getTechnique(0);
            technique->removeAllPasses();

            if (displayCompositeMap)
            {
                Ogre::Pass* pass = technique->createPass();
                pass->setVertexColourTracking(Ogre::TVC_AMBIENT|Ogre::TVC_DIFFUSE);
                pass->createTextureUnitState(mCompositeMap)->setTextureAddressingMode(Ogre::TextureUnitState::TAM_CLAMP);
            }
            else
            {
                assert(mLayerList.size() == mBlendmapList.size()+1);
                std::vector<Ogre::TexturePtr>::iterator blend = mBlendmapList.begin();
                for (std::vector<LayerInfo>::iterator layer = mLayerList.begin(); layer != mLayerList.end(); ++layer)
                {
                    Ogre::Pass* pass = technique->createPass();
                    pass->setLightingEnabled(false);
                    pass->setVertexColourTracking(Ogre::TVC_NONE);
                    // TODO: How to handle fog?
                    pass->setFog(true, Ogre::FOG_NONE);

                    bool first = (layer == mLayerList.begin());

                    Ogre::TextureUnitState* tus;

                    if (!first)
                    {
                        pass->setSceneBlending(Ogre::SBT_TRANSPARENT_ALPHA);
                        pass->setDepthFunction(Ogre::CMPF_EQUAL);

                        tus = pass->createTextureUnitState((*blend)->getName());
                        tus->setAlphaOperation(Ogre::LBX_BLEND_TEXTURE_ALPHA,
                                               Ogre::LBS_TEXTURE,
                                               Ogre::LBS_TEXTURE);
                        tus->setColourOperationEx(Ogre::LBX_BLEND_DIFFUSE_ALPHA,
                                                  Ogre::LBS_TEXTURE,
                                                  Ogre::LBS_TEXTURE);
                        tus->setIsAlpha(true);
                        tus->setTextureAddressingMode(Ogre::TextureUnitState::TAM_CLAMP);

                        float scale = (16/(16.f+1.f));
                        tus->setTextureScale(1.f/scale,1.f/scale);
                    }

                    // Add the actual layer texture on top of the alpha map.
                    tus = pass->createTextureUnitState(layer->mDiffuseMap);
                    if (!first)
                        tus->setColourOperationEx(Ogre::LBX_BLEND_DIFFUSE_ALPHA,
                                                  Ogre::LBS_TEXTURE,
                                                  Ogre::LBS_CURRENT);

                    tus->setTextureScale(1/16.f,1/16.f);

                    if (!first)
                        ++blend;
                }

                if (!renderCompositeMap)
                {
                    Ogre::Pass* lightingPass = technique->createPass();
                    lightingPass->setSceneBlending(Ogre::SBT_MODULATE);
                    lightingPass->setVertexColourTracking(Ogre::TVC_AMBIENT|Ogre::TVC_DIFFUSE);
                    lightingPass->setFog(true, Ogre::FOG_NONE);
                }
            }

            return mat;
        }
#if TERRAIN_USE_SHADER
        else
        {
            sh::MaterialInstance* material = sh::Factory::getInstance().createMaterialInstance (name.str());
            material->setProperty ("allow_fixed_function", sh::makeProperty<sh::BooleanValue>(new sh::BooleanValue(false)));

            if (displayCompositeMap)
            {
                sh::MaterialInstancePass* p = material->createPass ();

                p->setProperty ("vertex_program", sh::makeProperty<sh::StringValue>(new sh::StringValue("terrain_vertex")));
                p->setProperty ("fragment_program", sh::makeProperty<sh::StringValue>(new sh::StringValue("terrain_fragment")));
                p->mShaderProperties.setProperty ("is_first_pass", sh::makeProperty(new sh::BooleanValue(true)));
                p->mShaderProperties.setProperty ("render_composite_map", sh::makeProperty(new sh::BooleanValue(false)));
                p->mShaderProperties.setProperty ("display_composite_map", sh::makeProperty(new sh::BooleanValue(true)));
                p->mShaderProperties.setProperty ("num_layers", sh::makeProperty (new sh::StringValue("0")));
                p->mShaderProperties.setProperty ("num_blendmaps", sh::makeProperty (new sh::StringValue("0")));
                p->mShaderProperties.setProperty ("normal_map_enabled", sh::makeProperty (new sh::BooleanValue(false)));
                p->mShaderProperties.setProperty ("parallax_enabled", sh::makeProperty (new sh::BooleanValue(false)));
                p->mShaderProperties.setProperty ("normal_maps",
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        mNodeEditor->addNode(mMaterialNode);
    }
}

//****************************************************************************/
void EditorDockWidget::doTechniqueHToolbarAction(void)
{
    // Add a technique node
    Magus::QtNodeTechnique* techniqueNode = new Magus::QtNodeTechnique(NODE_TITLE_TECHNIQUE);
    mNodeEditor->addNode(techniqueNode);
}

//****************************************************************************/
void EditorDockWidget::doPassHToolbarAction(void)
{
    // Add a pass node
    Magus::QtNodePass* passNode = new Magus::QtNodePass(NODE_TITLE_PASS);
    mNodeEditor->addNode(passNode);
}

//****************************************************************************/
void EditorDockWidget::doTextureHToolbarAction(void)
{
    // Add a texture unit node
    Magus::QtNodeTextureUnit* textureUnitNode = new Magus::QtNodeTextureUnit(NODE_TITLE_TEXTURE_UNIT);
    mNodeEditor->addNode(textureUnitNode);
}

//****************************************************************************/
void EditorDockWidget::doCogHToolbarAction(void)
{
    if (!mMaterialNode)
        return;

    if (mMaterialNode->getMaterialName().isEmpty())
        return;

    // ---------------------------------------- Create a material ----------------------------------------
    Ogre::LogManager* logManager = Ogre::LogManager::getSingletonPtr();
    Ogre::MaterialManager* materialManager = Ogre::MaterialManager::getSingletonPtr();
    Ogre::String materialName = mMaterialNode->getMaterialName().toStdString(); // Convert to std format
    logManager->logMessage("SME: create Ogre material: " + materialName);
    Ogre::MaterialPtr material = materialManager->create(materialName, "General");

    // Remark: Sceneblending is done for each pass individually, although it is defined on material level

    // ---------------------------------------- Add the technique ----------------------------------------
    Magus::QtNode* node = mMaterialNode->getNodeConnectedToPort(PORT_TECHNIQUE_OUT);
    if (!node)
    {
        logManager->logMessage("SME: No technique node available");
        return;
    }

    Magus::QtNodeTechnique* techniqueNode = static_cast<Magus::QtNodeTechnique*>(node);
    material->removeAllTechniques();
    Ogre::Technique* technique = material->createTechnique();
    technique->removeAllPasses();
    logManager->logMessage("SME: Technique created" + Ogre::StringConverter::toString(material->getNumTechniques()));

    // ---------------------------------------- Add the passes ----------------------------------------
    Magus::QtNodePass* passNode;
    Magus::QtNodeTextureUnit* textureUnitNode;
    Ogre::Pass* pass;
    Ogre::TextureUnitState* textureUnit;
    for (unsigned int i = 1; i < 5; ++i)
    {
        node = techniqueNode->getNodeConnectedToPort(PORT_PASS_OUT, i); // node with the same name
        if (node)
        {
            passNode = static_cast<Magus::QtNodePass*>(node);
            pass = technique->createPass();
            pass->removeAllTextureUnitStates();
            logManager->logMessage("SME: Pass on port nr. " + Ogre::StringConverter::toString(i) + " created");
            propagatePassNodeData(passNode, pass);

            // ---------------------------------------- Add the texture units ----------------------------------------
            for (unsigned int j = 1; j < 9; ++j)
            {
                node = passNode->getNodeConnectedToPort(PORT_TEXTURE_OUT, j);
                if (node)
                {
                    logManager->logMessage("SME: Texture unit on port nr. " +
                                           Ogre::StringConverter::toString(j) +
                                           " of Pass port nr. " +
                                           Ogre::StringConverter::toString(i) +
                                           " created");
                    textureUnitNode = static_cast<Magus::QtNodeTextureUnit*>(node);
                    textureUnit = pass->createTextureUnitState();
                    propagateTextureUnitNodeData(textureUnitNode, textureUnit);
                }
            }
        }
    }

    // Assign the material to the ogrehead
    material->compile();
    material->load();
    mParent->getOgreManager()->getOgreWidget(1)->mEntity->setMaterial(material);
}