コード例 #1
0
ファイル: OgreCompositor.cpp プロジェクト: vancepym/ogre
//-----------------------------------------------------------------------
void Compositor::createGlobalTextures()
{
    static size_t dummyCounter = 0;
    if (mSupportedTechniques.empty())
        return;

    //To make sure that we are consistent, it is demanded that all composition
    //techniques define the same set of global textures.

    typedef std::set<String> StringSet;
    StringSet globalTextureNames;

    //Initialize global textures from first supported technique
    CompositionTechnique* firstTechnique = mSupportedTechniques[0];

    CompositionTechnique::TextureDefinitionIterator texDefIt =
        firstTechnique->getTextureDefinitionIterator();
    while (texDefIt.hasMoreElements())
    {
        CompositionTechnique::TextureDefinition* def = texDefIt.getNext();
        if (def->scope == CompositionTechnique::TS_GLOBAL)
        {
            //Check that this is a legit global texture
            if (!def->refCompName.empty())
            {
                OGRE_EXCEPT(Exception::ERR_INVALID_STATE,
                            "Global compositor texture definition can not be a reference",
                            "Compositor::createGlobalTextures");
            }
            if (def->width == 0 || def->height == 0)
            {
                OGRE_EXCEPT(Exception::ERR_INVALID_STATE,
                            "Global compositor texture definition must have absolute size",
                            "Compositor::createGlobalTextures");
            }
            if (def->pooled)
            {
                LogManager::getSingleton().logMessage(
                    "Pooling global compositor textures has no effect");
            }
            globalTextureNames.insert(def->name);

            //TODO GSOC : Heavy copy-pasting from CompositorInstance. How to we solve it?

            /// Make the tetxure
            RenderTarget* rendTarget;
            if (def->formatList.size() > 1)
            {
                String MRTbaseName = "c" + StringConverter::toString(dummyCounter++) +
                                     "/" + mName + "/" + def->name;
                MultiRenderTarget* mrt =
                    Root::getSingleton().getRenderSystem()->createMultiRenderTarget(MRTbaseName);
                mGlobalMRTs[def->name] = mrt;

                // create and bind individual surfaces
                size_t atch = 0;
                for (PixelFormatList::iterator p = def->formatList.begin();
                        p != def->formatList.end(); ++p, ++atch)
                {

                    String texname = MRTbaseName + "/" + StringConverter::toString(atch);
                    TexturePtr tex;

                    tex = TextureManager::getSingleton().createManual(
                              texname,
                              ResourceGroupManager::INTERNAL_RESOURCE_GROUP_NAME, TEX_TYPE_2D,
                              (uint)def->width, (uint)def->height, 0, *p, TU_RENDERTARGET, 0,
                              def->hwGammaWrite && !PixelUtil::isFloatingPoint(*p), def->fsaa);

                    RenderTexture* rt = tex->getBuffer()->getRenderTarget();
                    rt->setAutoUpdated(false);
                    mrt->bindSurface(atch, rt);

                    // Also add to local textures so we can look up
                    String mrtLocalName = getMRTTexLocalName(def->name, atch);
                    mGlobalTextures[mrtLocalName] = tex;

                }

                rendTarget = mrt;
            }
            else
            {
                String texName =  "c" + StringConverter::toString(dummyCounter++) +
                                  "/" + mName + "/" + def->name;

                // space in the name mixup the cegui in the compositor demo
                // this is an auto generated name - so no spaces can't hart us.
                std::replace( texName.begin(), texName.end(), ' ', '_' );

                TexturePtr tex;
                tex = TextureManager::getSingleton().createManual(
                          texName,
                          ResourceGroupManager::INTERNAL_RESOURCE_GROUP_NAME, TEX_TYPE_2D,
                          (uint)def->width, (uint)def->height, 0, def->formatList[0], TU_RENDERTARGET, 0,
                          def->hwGammaWrite && !PixelUtil::isFloatingPoint(def->formatList[0]), def->fsaa);


                rendTarget = tex->getBuffer()->getRenderTarget();
                mGlobalTextures[def->name] = tex;
            }

            //Set DepthBuffer pool for sharing
            rendTarget->setDepthBufferPool( def->depthBufferId );
        }
    }

    //Validate that all other supported techniques expose the same set of global textures.
    for (size_t i=1; i<mSupportedTechniques.size(); i++)
    {
        CompositionTechnique* technique = mSupportedTechniques[i];
        bool isConsistent = true;
        size_t numGlobals = 0;
        texDefIt = technique->getTextureDefinitionIterator();
        while (texDefIt.hasMoreElements())
        {
            CompositionTechnique::TextureDefinition* texDef = texDefIt.getNext();
            if (texDef->scope == CompositionTechnique::TS_GLOBAL)
            {
                if (globalTextureNames.find(texDef->name) == globalTextureNames.end())
                {
                    isConsistent = false;
                    break;
                }
                numGlobals++;
            }
        }
        if (numGlobals != globalTextureNames.size())
            isConsistent = false;

        if (!isConsistent)
        {
            OGRE_EXCEPT(Exception::ERR_INVALID_STATE,
                        "Different composition techniques define different global textures",
                        "Compositor::createGlobalTextures");
        }

    }

}
コード例 #2
0
//-----------------------------------------------------------------------
void CompositorInstance::createResources()
{
static size_t dummyCounter = 0;
    freeResources();
    /// Create temporary textures
    /// In principle, temporary textures could be shared between multiple viewports
    /// (CompositorChains). This will save a lot of memory in case more viewports
    /// are composited.
    CompositionTechnique::TextureDefinitionIterator it = mTechnique->getTextureDefinitionIterator();
    while(it.hasMoreElements())
    {
        CompositionTechnique::TextureDefinition *def = it.getNext();
        /// Determine width and height
        size_t width = def->width;
        size_t height = def->height;
		uint fsaa = 0;
		bool hwGammaWrite = false;

		deriveTextureRenderTargetOptions(def->name, &hwGammaWrite, &fsaa);

        if(width == 0)
            width = static_cast<size_t>(
				static_cast<float>(mChain->getViewport()->getActualWidth()) * def->widthFactor);
        if(height == 0)
			height = static_cast<size_t>(
				static_cast<float>(mChain->getViewport()->getActualHeight()) * def->heightFactor);
        /// Make the tetxure
		RenderTarget* rendTarget;
		if (def->formatList.size() > 1)
		{
			String MRTbaseName = "c" + StringConverter::toString(dummyCounter++) + 
				"/" + def->name + "/" + mChain->getViewport()->getTarget()->getName();
			MultiRenderTarget* mrt = 
				Root::getSingleton().getRenderSystem()->createMultiRenderTarget(MRTbaseName);
			mLocalMRTs[def->name] = mrt;

			// create and bind individual surfaces
			size_t atch = 0;
			for (PixelFormatList::iterator p = def->formatList.begin(); 
				p != def->formatList.end(); ++p, ++atch)
			{

				TexturePtr tex = TextureManager::getSingleton().createManual(
					MRTbaseName + "/" + StringConverter::toString(atch),
					ResourceGroupManager::INTERNAL_RESOURCE_GROUP_NAME, TEX_TYPE_2D, 
					(uint)width, (uint)height, 0, *p, TU_RENDERTARGET ); 
				
				RenderTexture* rt = tex->getBuffer()->getRenderTarget();
				rt->setAutoUpdated(false);
				mrt->bindSurface(atch, rt);

				// Also add to local textures so we can look up
				String mrtLocalName = getMRTTexLocalName(def->name, atch);
				mLocalTextures[mrtLocalName] = tex;
				
			}

			rendTarget = mrt;
		}
		else
		{
			String texName =  "c" + StringConverter::toString(dummyCounter++) + 
				"/" + def->name + "/" + mChain->getViewport()->getTarget()->getName();
			
			// space in the name mixup the cegui in the compositor demo
			// this is an auto generated name - so no spaces can't hart us.
			std::replace( texName.begin(), texName.end(), ' ', '_' ); 

			TexturePtr tex = TextureManager::getSingleton().createManual(
				texName, 
				ResourceGroupManager::INTERNAL_RESOURCE_GROUP_NAME, TEX_TYPE_2D, 
				(uint)width, (uint)height, 0, def->formatList[0], TU_RENDERTARGET, 0,
				hwGammaWrite, fsaa); 

			rendTarget = tex->getBuffer()->getRenderTarget();
			mLocalTextures[def->name] = tex;
		}
        
        
        /// Set up viewport over entire texture
        rendTarget->setAutoUpdated( false );

        Camera* camera = mChain->getViewport()->getCamera();

        // Save last viewport and current aspect ratio
        Viewport* oldViewport = camera->getViewport();
        Real aspectRatio = camera->getAspectRatio();

        Viewport* v = rendTarget->addViewport( camera );
        v->setClearEveryFrame( false );
        v->setOverlaysEnabled( false );
        v->setBackgroundColour( ColourValue( 0, 0, 0, 0 ) );

        // Should restore aspect ratio, in case of auto aspect ratio
        // enabled, it'll changed when add new viewport.
        camera->setAspectRatio(aspectRatio);
        // Should restore last viewport, i.e. never disturb user code
        // which might based on that.
        camera->_notifyViewport(oldViewport);
    }
    
}