C++ TexturePtr::load方法代码示例

	bool TextureManager::_createTexture(Ogre::TexturePtr &Texture, const Ogre::String &Name, const Size &Size)
	{
		try
		{
			Ogre::TextureManager::getSingleton().remove(Name);

			Texture = Ogre::TextureManager::getSingleton().
				createManual(Name,
				HYDRAX_RESOURCE_GROUP, 
				Ogre::TEX_TYPE_2D,
				Size.Width, Size.Height,
				0,
				Ogre::PF_BYTE_BGRA,
				Ogre::TU_DYNAMIC_WRITE_ONLY_DISCARDABLE);

			Texture->load();
		}
		catch(Ogre::Exception &e)
		{
			HydraxLOG(e.getFullDescription());

			return false;
		}

		return true;
	}

TexturePair AssetsManager::showTexture(const std::string textureName)
{
	// 	if (!mOgreCEGUITexture) {
	// 		S_LOG_WARNING("You must first create a valid OgreCEGUITexture instance.");
	// 		return;
	// 	}
	if (Ogre::TextureManager::getSingleton().resourceExists(textureName)) {
		Ogre::TexturePtr texturePtr = static_cast<Ogre::TexturePtr>(Ogre::TextureManager::getSingleton().getByName(textureName));
		if (!texturePtr.isNull()) {
			if (!texturePtr->isLoaded()) {
				try {
					texturePtr->load();
				} catch (...) {
					S_LOG_WARNING("Error when loading " << textureName << ". This texture will not be shown.");
					return TexturePair();
				}
			}
			std::string textureName(texturePtr->getName());
			std::string imageSetName(textureName + "_AssetsManager");

			return createTextureImage(texturePtr, imageSetName);
			// 			mOgreCEGUITexture->setOgreTexture(texturePtr);
		}
	}
	return TexturePair();

}

	Ogre::TexturePtr LodTextureManager::load(const Ogre::String &name, const Ogre::String &group)
	{
		Ogre::ResourceManager::ResourceCreateOrRetrieveResult res = Ogre::TextureManager::getSingleton().createOrRetrieve(name, group, true, this);
		Ogre::TexturePtr tex = res.first;
		tex->load();
		return tex;
	}

Icon* IconManager::getIcon(int, EmberEntity* entity)
{

	std::string key = "entity_" + entity->getId();
	if (mIconStore.hasIcon(key)) {
		return mIconStore.getIcon(key);
	} else {
		IconActionCreator actionCreator(*entity);
		std::unique_ptr<EntityMapping::EntityMapping> modelMapping(Mapping::EmberEntityMappingManager::getSingleton().getManager().createMapping(*entity, actionCreator, &EmberOgre::getSingleton().getWorld()->getView()));
		std::string modelName;
		if (modelMapping.get()) {
			modelMapping->initialize();
			modelName = actionCreator.getModelName();
		}
		//if there's no model defined for this use the placeholder model
		if (modelName == "") {
			modelName = "placeholder";
		}
		Ogre::ResourcePtr modelDefPtr = Model::ModelDefinitionManager::getSingleton().getByName(modelName);
		if (!modelDefPtr.isNull()) {
			Model::ModelDefinition* modelDef = static_cast<Model::ModelDefinition*> (modelDefPtr.get());
			const std::string& iconPath(modelDef->getIconPath());
			if (iconPath != "") {

				Ogre::TexturePtr texPtr;
				try {
					if (Ogre::TextureManager::getSingleton().resourceExists(iconPath)) {
						texPtr = static_cast<Ogre::TexturePtr> (Ogre::TextureManager::getSingleton().getByName(iconPath));
						//try to load it to make sure that's it a working image
						texPtr->load();
					}
					if (texPtr.isNull()) {
						texPtr = Ogre::TextureManager::getSingleton().load(iconPath, "Gui");
					}
				} catch (...) {
					S_LOG_WARNING("Error when trying to load the icon " << iconPath <<". The icon will be rendered dynamically.");
					texPtr.setNull();
				}
				if (!texPtr.isNull()) {
					Icon* icon = mIconStore.createIcon(key, texPtr);
					return icon;
				}
			}
		}
		Icon* icon = mIconStore.createIcon(key);
		if (icon) {
			//update the model preview window
			// 				Model::Model* model = Model::Model::createModel(mIconRenderer.getRenderContext()->getSceneManager(), modelName);
			render(*icon, modelName);
			// 				mIconRenderer.getRenderContext()->getSceneManager()->destroyMovableObject(model);
		}
		return icon;
	}

	return 0;
}

    void GlobalMap::render (Loading::Listener* loadingListener)
    {
        Ogre::TexturePtr tex;

        const MWWorld::ESMStore &esmStore =
            MWBase::Environment::get().getWorld()->getStore();

        // get the size of the world
        MWWorld::Store<ESM::Cell>::iterator it = esmStore.get<ESM::Cell>().extBegin();
        for (; it != esmStore.get<ESM::Cell>().extEnd(); ++it)
        {
            if (it->getGridX() < mMinX)
                mMinX = it->getGridX();
            if (it->getGridX() > mMaxX)
                mMaxX = it->getGridX();
            if (it->getGridY() < mMinY)
                mMinY = it->getGridY();
            if (it->getGridY() > mMaxY)
                mMaxY = it->getGridY();
        }

        mWidth = mCellSize*(mMaxX-mMinX+1);
        mHeight = mCellSize*(mMaxY-mMinY+1);

        loadingListener->loadingOn();
        loadingListener->setLabel("Creating map");
        loadingListener->setProgressRange((mMaxX-mMinX+1) * (mMaxY-mMinY+1));
        loadingListener->setProgress(0);

        std::vector<Ogre::uchar> data (mWidth * mHeight * 3);

        for (int x = mMinX; x <= mMaxX; ++x)
        {
            for (int y = mMinY; y <= mMaxY; ++y)
            {
                ESM::Land* land = esmStore.get<ESM::Land>().search (x,y);

                if (land)
                {
                    int mask = ESM::Land::DATA_WNAM;
                    if (!land->isDataLoaded(mask))
                        land->loadData(mask);
                }

                for (int cellY=0; cellY<mCellSize; ++cellY)
                {
                    for (int cellX=0; cellX<mCellSize; ++cellX)
                    {
                        int vertexX = static_cast<int>(float(cellX)/float(mCellSize) * 9);
                        int vertexY = static_cast<int>(float(cellY) / float(mCellSize) * 9);


                        int texelX = (x-mMinX) * mCellSize + cellX;
                        int texelY = (mHeight-1) - ((y-mMinY) * mCellSize + cellY);

                        unsigned char r,g,b;

                        float y = 0;
                        if (land && land->mDataTypes & ESM::Land::DATA_WNAM)
                            y = (land->mLandData->mWnam[vertexY * 9 + vertexX] << 4) / 2048.f;
                        else
                            y = (SCHAR_MIN << 4) / 2048.f;
                        if (y < 0)
                        {
                            r = static_cast<unsigned char>(14 * y + 38);
                            g = static_cast<unsigned char>(20 * y + 56);
                            b = static_cast<unsigned char>(18 * y + 51);
                        }
                        else if (y < 0.3f)
                        {
                            if (y < 0.1f)
                                y *= 8.f;
                            else
                            {
                                y -= 0.1f;
                                y += 0.8f;
                            }
                            r = static_cast<unsigned char>(66 - 32 * y);
                            g = static_cast<unsigned char>(48 - 23 * y);
                            b = static_cast<unsigned char>(33 - 16 * y);
                        }
                        else
                        {
                            y -= 0.3f;
                            y *= 1.428f;
                            r = static_cast<unsigned char>(34 - 29 * y);
                            g = static_cast<unsigned char>(25 - 20 * y);
                            b = static_cast<unsigned char>(17 - 12 * y);
                        }

                        data[texelY * mWidth * 3 + texelX * 3] = r;
                        data[texelY * mWidth * 3 + texelX * 3+1] = g;
                        data[texelY * mWidth * 3 + texelX * 3+2] = b;
                    }
                }
                loadingListener->increaseProgress();
                if (land)
                    land->unloadData();
            }
        }
//.........这里部分代码省略.........

		void SetUpCustomContent()
		{
			Ogre::String CustomCameraName = "TestRenderTargetCamera";
			Ogre::String CustomTextureName = "TestRenderTargetTexture";
			Ogre::String CustomMaterialName = "CustomRenderTargetMaterial";
			Ogre::String CustomWorkSpaceName = "TestCustomRenderTargetWorkSpaceName";

			m_CustomRTTCamera = mSceneManager->createCamera(CustomCameraName);
			m_CustomRTTCamera->setPosition(0, 30, 0);
			m_CustomRTTCamera->lookAt(0, 0, 0);
			m_CustomRTTCamera->setFarClipDistance(1000);
			m_CustomRTTCamera->setNearClipDistance(0.1);

			m_CustomRenderTexture = Ogre::TextureManager::getSingleton().createManual(CustomTextureName, 
				Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, Ogre::TEX_TYPE_2D, 
				512, 512, 1, Ogre::PF_A8B8G8R8, Ogre::TU_RENDERTARGET);
			m_CustomRenderTexture->load();

			Ogre::RenderTexture* rtt = m_CustomRenderTexture->getBuffer(0)->getRenderTarget();


			Ogre::CompositorManager2 *compositorManager = mRoot->getCompositorManager2();

			const Ogre::IdString workspaceName(CustomWorkSpaceName);
			if( !compositorManager->hasWorkspaceDefinition( workspaceName ) )
			{
				compositorManager->createBasicWorkspaceDef( workspaceName, mBackgroundColour,
					Ogre::IdString() );
			}

			m_CustomRenderTarget = compositorManager->addWorkspace( mSceneManager, (Ogre::RenderTarget*)rtt, m_CustomRTTCamera,
					workspaceName, false );
			//m_CustomRenderTarget->setEnabled(false);			// not auto update
#if 0
			// create manual object
			Ogre::MaterialPtr CustomMaterial = Ogre::MaterialManager::getSingleton().create(CustomMaterialName, Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
			CustomMaterial->getTechnique(0)->removeAllPasses();
			Ogre::Pass* pass = CustomMaterial->getTechnique(0)->createPass();
			Ogre::TextureUnitState* tu = pass->createTextureUnitState();
			tu->setTextureName(CustomTextureName);
#endif
			Ogre::HlmsManager *hlmsManager = Ogre::Root::getSingleton().getHlmsManager();
			Ogre::Hlms *hlms = hlmsManager->getHlms( Ogre::HLMS_UNLIT );
			Ogre::HlmsDatablock *datablock = hlms->createDatablock( CustomMaterialName, CustomMaterialName,
				Ogre::HlmsMacroblock(), Ogre::HlmsBlendblock(), Ogre::HlmsParamVec() );
			Ogre::HlmsUnlitDatablock *unlitDb = static_cast<Ogre::HlmsUnlitDatablock*>( datablock );
			unlitDb->setTexture( 0, 0, m_CustomRenderTexture );
			
#if 1
			Ogre::ManualObject* CustomManualObject = mSceneManager->createManualObject();
			CustomManualObject->begin(CustomMaterialName);
			CustomManualObject->position(-100, -100, -100);
			CustomManualObject->textureCoord(0, 0);
			CustomManualObject->position(100, -100, -100);
			CustomManualObject->textureCoord(1, 0);
			CustomManualObject->position(100, 100, -100);
			CustomManualObject->textureCoord(1, 1);
			CustomManualObject->position(-100, 100, -100);
			CustomManualObject->textureCoord(0, 1);
			CustomManualObject->quad(0, 1, 2, 3);
			CustomManualObject->end();
//			CustomManualObject->setDatablock(0, CustomMaterialName);

			Ogre::SceneNode *sceneNodeLines = mSceneManager->getRootSceneNode( Ogre::SCENE_DYNAMIC )->
				createChildSceneNode( Ogre::SCENE_DYNAMIC );
			sceneNodeLines->attachObject(CustomManualObject);
			sceneNodeLines->scale(0.4f, 0.4f, 0.4f);
			sceneNodeLines->translate(0.0f, 0.0f, 0.0f, Ogre::SceneNode::TS_WORLD);
#endif
		}