text: /*
  -----------------------------------------------------------------------------
  This source file is part of OGRE
      (Object-oriented Graphics Rendering Engine)
  For the latest info, see http://www.ogre3d.org/
  
  Copyright (c) 2000-2013 Torus Knot Software Ltd
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
  -----------------------------------------------------------------------------
  */
  
  #include "OgreStableHeaders.h"
  #include "OgreHardwareUniformBuffer.h"
  #include "OgreHardwareBufferManager.h"
  #include "OgreDefaultHardwareBufferManager.h"
  #include "OgreException.h"
  
  namespace Ogre {
  
  	HardwareUniformBuffer::HardwareUniformBuffer(HardwareBufferManagerBase* mgr, size_t sizeBytes, 
  									HardwareBuffer::Usage usage, bool useShadowBuffer, const String& name)
  		: HardwareBuffer(usage, false, useShadowBuffer)
          , mMgr(mgr)
  		, mName(name)
  	{
  		// Calculate the size of the vertices
          mSizeInBytes = sizeBytes;
  
          // Create a shadow buffer if required
          if (mUseShadowBuffer)
          {
              mShadowBuffer = OGRE_NEW DefaultHardwareUniformBuffer(mMgr, sizeBytes, HardwareBuffer::HBU_DYNAMIC, false);
          }
  	}
  	
  	HardwareUniformBuffer::~HardwareUniformBuffer()
  	{
  		if (mMgr)
  		{
  			mMgr->_notifyUniformBufferDestroyed(this);
  		}
          OGRE_DELETE mShadowBuffer;
  	}
  
  	/*
  	bool HardwareUniformBuffer::writeParams(GpuProgramParametersSharedPtr params)
  	{
  		// Lock buffer
  		void* mappedData = this->lock(HardwareBuffer::HBL_DISCARD);
  		if (!mappedData)
  		{
  			OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR,
  				"Cannot update uniform buffer\nError description: error locking uniform buffer",
  				"HardwareUniformBuffer::writeParams");
  		}
  
  		// Store temporary data address
  		void* srcData = 0;
  
  		// Iterate through variables
  		ShaderVariableIterator it = mShaderVars.begin();
  		ShaderVariableIterator end = mShaderVars.end();
  		while(it != end)
  		{
  			String varName = it->name;
  
  			// hack for cg parameter with strange prefix
  			if (varName.size() > 0 && varName[0] == '_')
  			{
  				varName.erase(0,1);
  			}
  
  			const GpuConstantDefinition& def = params->getConstantDefinition(varName);
  			if (def.isFloat())
  			{
  				srcData = (void *)&(*(params->getFloatConstantList().begin() + def.physicalIndex));
  			}
  			else
  			{
  				srcData = (void *)&(*(params->getIntConstantList().begin() + def.physicalIndex));
  			}
  
  			memcpy( &(((char *)(mappedData))[it->startOffset]), srcData , it->size);
  		}
  
  		// Unlock buffer
  		this->unlock();
  
  		return true;
  	}
  
  	bool HardwareUniformBuffer::writeSharedParams(GpuSharedParametersPtr sharedParams)
  	{
  		// Lock buffer
  		void* mappedData = this->lock(HardwareBuffer::HBL_DISCARD);
  		if (!mappedData)
  		{
  			OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR,
  				"Cannot update uniform buffer\nError description: error locking uniform buffer",
  				"HardwareUniformBuffer::writeParams");
  		}
  
  		// Store temporary data address
  		void* srcData = 0;
  
  		// Iterate through variables
  		ShaderVariableIterator it = mShaderVars.begin();
  		ShaderVariableIterator end = mShaderVars.end();
  		while(it != end)
  		{
  			String varName = it->name;
  
  			// hack for cg parameter with strange prefix
  			if (varName.size() > 0 && varName[0] == '_')
  			{
  				varName.erase(0,1);
  			}
  
  			const GpuConstantDefinition& def = sharedParams->getConstantDefinition(varName);
  			if (def.isFloat())
  			{
  				srcData = (void *)&(*(sharedParams->getFloatConstantList().begin() + def.physicalIndex));
  			}
  			else
  			{
  				srcData = (void *)&(*(sharedParams->getIntConstantList().begin() + def.physicalIndex));
  			}
  
  			memcpy( &(((char *)(mappedData))[it->startOffset]), srcData , it->size);
  		}
  
  		// Unlock buffer
  		this->unlock();
  
  		return true;
  	}
  	*/
  	//-----------------------------------------------------------------------------
      HardwareUniformBufferSharedPtr::HardwareUniformBufferSharedPtr(HardwareUniformBuffer* buf)
          : SharedPtr<HardwareUniformBuffer>(buf)
      {
  
      }
  }