//-----------------------------------------------------------------------
    TexturePtr TextureManager::loadRawData(const String &name, const String& group,
        DataStreamPtr& stream, ushort uWidth, ushort uHeight, 
        PixelFormat format, TextureType texType, 
        int numMipmaps, Real gamma, bool hwGamma)
	{
        TexturePtr tex = create(name, group, true);

        tex->setTextureType(texType);
        tex->setNumMipmaps((numMipmaps == MIP_DEFAULT)? mDefaultNumMipmaps :
			static_cast<size_t>(numMipmaps));
        tex->setGamma(gamma);
		tex->setHardwareGammaEnabled(hwGamma);
		tex->loadRawData(stream, uWidth, uHeight, format);
		
        return tex;
	}
    //-----------------------------------------------------------------------
    TexturePtr TextureManager::loadImage( const String &name, const String& group,
        const Image &img, TextureType texType, int numMipmaps, Real gamma, bool isAlpha, 
		PixelFormat desiredFormat, bool hwGamma)
    {
        TexturePtr tex = create(name, group, true);

        tex->setTextureType(texType);
        tex->setNumMipmaps((numMipmaps == MIP_DEFAULT)? mDefaultNumMipmaps :
			static_cast<size_t>(numMipmaps));
        tex->setGamma(gamma);
        tex->setTreatLuminanceAsAlpha(isAlpha);
        tex->setFormat(desiredFormat);
		tex->setHardwareGammaEnabled(hwGamma);
        tex->loadImage(img);

        return tex;
    }
    //-----------------------------------------------------------------------
    TexturePtr TextureManager::createManual(const String & name, const String& group,
        TextureType texType, uint width, uint height, uint depth, int numMipmaps,
        PixelFormat format, int usage, ManualResourceLoader* loader, bool hwGamma, 
		uint fsaa, const String& fsaaHint)
    {
        TexturePtr ret = create(name, group, true, loader);
        ret->setTextureType(texType);
        ret->setWidth(width);
        ret->setHeight(height);
		ret->setDepth(depth);
        ret->setNumMipmaps((numMipmaps == MIP_DEFAULT)? mDefaultNumMipmaps :
			static_cast<size_t>(numMipmaps));
        ret->setFormat(format);
        ret->setUsage(usage);
		ret->setHardwareGammaEnabled(hwGamma);
		ret->setFSAA(fsaa, fsaaHint);
		ret->createInternalResources();
		return ret;
    }
    //-----------------------------------------------------------------------
    TextureManager::ResourceCreateOrRetrieveResult TextureManager::createOrRetrieve(
            const String &name, const String& group, bool isManual, ManualResourceLoader* loader,
            const NameValuePairList* createParams, TextureType texType, int numMipmaps, Real gamma,
            bool isAlpha, PixelFormat desiredFormat, bool hwGamma)
    {
		ResourceCreateOrRetrieveResult res =
            Ogre::ResourceManager::createOrRetrieve(name, group, isManual, loader, createParams);
		// Was it created?
		if(res.second)
        {
            TexturePtr tex = res.first;
            tex->setTextureType(texType);
            tex->setNumMipmaps((numMipmaps == MIP_DEFAULT)? mDefaultNumMipmaps :
				static_cast<size_t>(numMipmaps));
            tex->setGamma(gamma);
            tex->setTreatLuminanceAsAlpha(isAlpha);
            tex->setFormat(desiredFormat);
			tex->setHardwareGammaEnabled(hwGamma);
        }
        return res;
    }
Esempio n. 5
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void ImpostorTexture::renderTextures(bool force)
{
#ifdef IMPOSTOR_FILE_SAVE
	TexturePtr renderTexture;
#else
	TexturePtr renderTexture(texture);
	//if we're not using a file image we need to set up a resource loader, so that the texture is regenerated if it's ever unloaded (such as switching between fullscreen and the desktop in win32)
	loader = std::auto_ptr<ImpostorTextureResourceLoader>(new ImpostorTextureResourceLoader(*this));
#endif
	RenderTexture *renderTarget;
	Camera *renderCamera;
	Viewport *renderViewport;
	SceneNode *camNode;

	//Set up RTT texture
	uint32 textureSize = ImpostorPage::impostorResolution;
	if (renderTexture.isNull()) {
	renderTexture = TextureManager::getSingleton().createManual(getUniqueID("ImpostorTexture"), "Impostors",
				TEX_TYPE_2D, textureSize * IMPOSTOR_YAW_ANGLES, textureSize * IMPOSTOR_PITCH_ANGLES, 0, PF_A8R8G8B8, TU_RENDERTARGET, loader.get());
	}
	renderTexture->setNumMipmaps(MIP_UNLIMITED);
	
	//Set up render target
	renderTarget = renderTexture->getBuffer()->getRenderTarget(); 
	renderTarget->setAutoUpdated(false);
	
	//Set up camera
	camNode = sceneMgr->getSceneNode("ImpostorPage::cameraNode");
	renderCamera = sceneMgr->createCamera(getUniqueID("ImpostorCam"));
	camNode->attachObject(renderCamera);
	renderCamera->setLodBias(1000.0f);
	renderViewport = renderTarget->addViewport(renderCamera);
	renderViewport->setOverlaysEnabled(false);
	renderViewport->setClearEveryFrame(true);
	renderViewport->setShadowsEnabled(false);
	renderViewport->setBackgroundColour(ImpostorPage::impostorBackgroundColor);
	
	//Set up scene node
	SceneNode* node = sceneMgr->getSceneNode("ImpostorPage::renderNode");
	
	Ogre::SceneNode* oldSceneNode = entity->getParentSceneNode();
	if (oldSceneNode) {
		oldSceneNode->detachObject(entity);
	}
	node->attachObject(entity);
	node->setPosition(-entityCenter);
	
	//Set up camera FOV
	const Real objDist = entityRadius * 100;
	const Real nearDist = objDist - (entityRadius + 1); 
	const Real farDist = objDist + (entityRadius + 1);
	
	renderCamera->setAspectRatio(1.0f);
	renderCamera->setFOVy(Math::ATan(entityDiameter / objDist));
	renderCamera->setNearClipDistance(nearDist);
	renderCamera->setFarClipDistance(farDist);
	
	//Disable mipmapping (without this, masked textures look bad)
	MaterialManager *mm = MaterialManager::getSingletonPtr();
	FilterOptions oldMinFilter = mm->getDefaultTextureFiltering(FT_MIN);
	FilterOptions oldMagFilter = mm->getDefaultTextureFiltering(FT_MAG);
	FilterOptions oldMipFilter = mm->getDefaultTextureFiltering(FT_MIP);
	mm->setDefaultTextureFiltering(FO_POINT, FO_LINEAR, FO_NONE);

	//Disable fog
	FogMode oldFogMode = sceneMgr->getFogMode();
	ColourValue oldFogColor = sceneMgr->getFogColour();
	Real oldFogDensity = sceneMgr->getFogDensity();
	Real oldFogStart = sceneMgr->getFogStart();
	Real oldFogEnd = sceneMgr->getFogEnd();
	sceneMgr->setFog(Ogre::FOG_EXP2, Ogre::ColourValue(0,0,0,0), 0.0f, 0.0f, 0.0f); //Ember change
	
	//We need to disable all lightning and render it full bright
	Ogre::ColourValue oldAmbientColour = sceneMgr->getAmbientLight();
	sceneMgr->setAmbientLight(ColourValue::White);

	std::vector<Ogre::MovableObject*> lightStore;
	Ogre::SceneManager::MovableObjectIterator lightIterator = sceneMgr->getMovableObjectIterator(Ogre::LightFactory::FACTORY_TYPE_NAME);
	while (lightIterator.hasMoreElements()) {
		Ogre::MovableObject* light = lightIterator.getNext();
		if (light) {
			if (light->getVisible()) {
				lightStore.push_back(light);
				light->setVisible(false);
			}
		}
	}

	// Get current status of the queue mode
	Ogre::SceneManager::SpecialCaseRenderQueueMode OldSpecialCaseRenderQueueMode = sceneMgr->getSpecialCaseRenderQueueMode();
	//Only render the entity
	sceneMgr->setSpecialCaseRenderQueueMode(Ogre::SceneManager::SCRQM_INCLUDE); 
	sceneMgr->addSpecialCaseRenderQueue(group->geom->getRenderQueue() + 1);

	uint8 oldRenderQueueGroup = entity->getRenderQueueGroup();
	entity->setRenderQueueGroup(group->geom->getRenderQueue() + 1);
	bool oldVisible = entity->getVisible();
	entity->setVisible(true);
	float oldMaxDistance = entity->getRenderingDistance();
	entity->setRenderingDistance(0);

	bool needsRegen = true;
#ifdef IMPOSTOR_FILE_SAVE
	//Calculate the filename hash used to uniquely identity this render
	String strKey = entityKey;
	char key[32] = {0};
	uint32 i = 0;
	for (String::const_iterator it = entityKey.begin(); it != entityKey.end(); ++it)
	{
		key[i] ^= *it;
		i = (i+1) % sizeof(key);
	}
	for (i = 0; i < sizeof(key); ++i)
		key[i] = (key[i] % 26) + 'A';

	String tempdir = this->group->geom->getTempdir();
	ResourceGroupManager::getSingleton().addResourceLocation(tempdir, "FileSystem", "BinFolder");

	String fileNamePNG = "Impostor." + String(key, sizeof(key)) + '.' + StringConverter::toString(textureSize) + ".png";
	String fileNameDDS = "Impostor." + String(key, sizeof(key)) + '.' + StringConverter::toString(textureSize) + ".dds";

	//Attempt to load the pre-render file if allowed
	needsRegen = force;
	if (!needsRegen){
		try{
			texture = TextureManager::getSingleton().load(fileNameDDS, "BinFolder", TEX_TYPE_2D, MIP_UNLIMITED);
		}
		catch (...){
			try{
				texture = TextureManager::getSingleton().load(fileNamePNG, "BinFolder", TEX_TYPE_2D, MIP_UNLIMITED);
			}
			catch (...){
				needsRegen = true;
			}
		}
	}
#endif

	if (needsRegen){
		//If this has not been pre-rendered, do so now
		const float xDivFactor = 1.0f / IMPOSTOR_YAW_ANGLES;
		const float yDivFactor = 1.0f / IMPOSTOR_PITCH_ANGLES;
		for (int o = 0; o < IMPOSTOR_PITCH_ANGLES; ++o){ //4 pitch angle renders
#ifdef IMPOSTOR_RENDER_ABOVE_ONLY
			Radian pitch = Degree((90.0f * o) * yDivFactor); //0, 22.5, 45, 67.5
#else
			Radian pitch = Degree((180.0f * o) * yDivFactor - 90.0f);
#endif

			for (int i = 0; i < IMPOSTOR_YAW_ANGLES; ++i){ //8 yaw angle renders
				Radian yaw = Degree((360.0f * i) * xDivFactor); //0, 45, 90, 135, 180, 225, 270, 315
					
				//Position camera
				camNode->setPosition(0, 0, 0);
                camNode->setOrientation(Quaternion(yaw, Vector3::UNIT_Y) * Quaternion(-pitch, Vector3::UNIT_X));
                camNode->translate(Vector3(0, 0, objDist), Node::TS_LOCAL);
						
				//Render the impostor
				renderViewport->setDimensions((float)(i) * xDivFactor, (float)(o) * yDivFactor, xDivFactor, yDivFactor);
				renderTarget->update();
			}
		}
	
#ifdef IMPOSTOR_FILE_SAVE
		//Save RTT to file with respecting the temp dir
		renderTarget->writeContentsToFile(tempdir + fileNamePNG);

		//Load the render into the appropriate texture view
		texture = TextureManager::getSingleton().load(fileNamePNG, "BinFolder", TEX_TYPE_2D, MIP_UNLIMITED);
#else
		texture = renderTexture;
#endif
	}
	

	entity->setVisible(oldVisible);
	entity->setRenderQueueGroup(oldRenderQueueGroup);
	entity->setRenderingDistance(oldMaxDistance);
	sceneMgr->removeSpecialCaseRenderQueue(group->geom->getRenderQueue() + 1);
	// Restore original state
	sceneMgr->setSpecialCaseRenderQueueMode(OldSpecialCaseRenderQueueMode); 

	//Re-enable mipmapping
	mm->setDefaultTextureFiltering(oldMinFilter, oldMagFilter, oldMipFilter);

	//Re-enable fog
	sceneMgr->setFog(oldFogMode, oldFogColor, oldFogDensity, oldFogStart, oldFogEnd);

	//Re-enable both scene lightning and disabled individual lights
	sceneMgr->setAmbientLight(oldAmbientColour);
	for (std::vector<Ogre::MovableObject*>::const_iterator I = lightStore.begin(); I != lightStore.end(); ++I) {
		(*I)->setVisible(true);
	}

	//Delete camera
	renderTarget->removeViewport(0);
	renderCamera->getSceneManager()->destroyCamera(renderCamera);
	
	//Delete scene node
	node->detachAllObjects();
	if (oldSceneNode) {
		oldSceneNode->attachObject(entity);
	}
#ifdef IMPOSTOR_FILE_SAVE
	//Delete RTT texture
	assert(!renderTexture.isNull());
	String texName2(renderTexture->getName());

	renderTexture.setNull();
	if (TextureManager::getSingletonPtr())
		TextureManager::getSingleton().remove(texName2);
#endif
}