protected void BlitToMemory( BasicBox srcBox, PixelBox dst, BufferResources srcBufferResources, D3D9.Device d3d9Device )
		{
			// Decide on pixel format of temp surface
			PixelFormat tmpFormat = Format;
			if ( D3D9Helper.ConvertEnum( dst.Format ) != D3D9.Format.Unknown )
			{
				tmpFormat = dst.Format;
			}

			if ( srcBufferResources.Surface != null )
			{
				Debug.Assert( srcBox.Depth == 1 && dst.Depth == 1 );
				var srcDesc = srcBufferResources.Surface.Description;
				var temppool = D3D9.Pool.Scratch;

				// if we're going to try to use GetRenderTargetData, need to use system mem pool
				var tryGetRenderTargetData = false;
				if ( ( ( srcDesc.Usage & D3D9.Usage.RenderTarget ) != 0 ) && ( srcBox.Width == dst.Width ) &&
				     ( srcBox.Height == dst.Height ) && ( srcBox.Width == Width ) && ( srcBox.Height == Height ) &&
				     ( Format == tmpFormat ) )
				{
					tryGetRenderTargetData = true;
					temppool = D3D9.Pool.SystemMemory;
				}

				// Create temp texture
				var tmp = new D3D9.Texture( d3d9Device, dst.Width, dst.Height, 1, // 1 mip level ie topmost, generate no mipmaps
				                            0, D3D9Helper.ConvertEnum( tmpFormat ), temppool );

				var surface = tmp.GetSurfaceLevel( 0 );

				// Copy texture to this temp surface
				var srcRect = ToD3DRectangle( srcBox );
				var destRect = ToD3DRectangle( dst );

				// Get the real temp surface format
				var dstDesc = surface.Description;
				tmpFormat = D3D9Helper.ConvertEnum( dstDesc.Format );

				// Use fast GetRenderTargetData if we are in its usage conditions
				var fastLoadSuccess = false;
				if ( tryGetRenderTargetData )
				{
					var result = d3d9Device.GetRenderTargetData( srcBufferResources.Surface, surface );
					fastLoadSuccess = result.Success;
				}
				if ( !fastLoadSuccess )
				{
					var res = D3D9.Surface.FromSurface( surface, srcBufferResources.Surface, D3D9.Filter.Default, 0, srcRect, destRect );
					if ( res.Failure )
					{
						surface.SafeDispose();
						tmp.SafeDispose();
						throw new AxiomException( "D3D9.Surface.FromSurface failed in D3D9HardwarePixelBuffer.BlitToMemory" );
					}
				}

				// Lock temp surface and copy it to memory
				var lrect = surface.LockRectangle( D3D9.LockFlags.ReadOnly );

				// Copy it
				var locked = new PixelBox( dst.Width, dst.Height, dst.Depth, tmpFormat );
				FromD3DLock( locked, lrect );
				PixelConverter.BulkPixelConversion( locked, dst );
				surface.UnlockRectangle();
				// Release temporary surface and texture
				surface.SafeDispose();
				tmp.SafeDispose();
			}
			else if ( srcBufferResources.Volume != null )
			{
				// Create temp texture
				var tmp = new D3D9.VolumeTexture( d3d9Device, dst.Width, dst.Height, dst.Depth, 0, 0,
				                                  D3D9Helper.ConvertEnum( tmpFormat ), D3D9.Pool.Scratch );

				var surface = tmp.GetVolumeLevel( 0 );

				// Volume
				var ddestBox = ToD3DBoxExtent( dst );
				var dsrcBox = ToD3DBox( srcBox );

				var res = D3D9.Volume.FromVolume( surface, srcBufferResources.Volume, D3D9.Filter.Default, 0, dsrcBox, ddestBox );
				if ( res.Failure )
				{
					surface.SafeDispose();
					tmp.SafeDispose();
					throw new AxiomException( "D3D9.Surface.FromVolume failed in D3D9HardwarePixelBuffer.BlitToMemory" );
				}

				// Lock temp surface and copy it to memory
				var lbox = surface.LockBox( D3D9.LockFlags.ReadOnly ); // Filled in by D3D

				// Copy it
				var locked = new PixelBox( dst.Width, dst.Height, dst.Depth, tmpFormat );
				FromD3DLock( locked, lbox );
				PixelConverter.BulkPixelConversion( locked, dst );
				surface.UnlockBox();
				// Release temporary surface and texture
				surface.SafeDispose();
				tmp.SafeDispose();
			}
		}
		protected void Blit( D3D9.Device d3d9Device, HardwarePixelBuffer rsrc, BasicBox srcBox, BasicBox dstBox,
		                     BufferResources srcBufferResources, BufferResources dstBufferResources )
		{
			if ( dstBufferResources.Surface != null && srcBufferResources.Surface != null )
			{
				// Surface-to-surface
				var dsrcRect = ToD3DRectangle( srcBox );
				var ddestRect = ToD3DRectangle( dstBox );

				var srcDesc = srcBufferResources.Surface.Description;

				// If we're blitting from a RTT, try GetRenderTargetData
				// if we're going to try to use GetRenderTargetData, need to use system mem pool

				// romeoxbm: not used even in Ogre
				//var tryGetRenderTargetData = false;

				if ( ( srcDesc.Usage & D3D9.Usage.RenderTarget ) != 0 && srcDesc.MultiSampleType == D3D9.MultisampleType.None )
				{
					// Temp texture
					var tmptex = new D3D9.Texture( d3d9Device, srcDesc.Width, srcDesc.Height, 1,
					                               // 1 mip level ie topmost, generate no mipmaps
					                               0, srcDesc.Format, D3D9.Pool.SystemMemory );

					var tmpsurface = tmptex.GetSurfaceLevel( 0 );

					if ( d3d9Device.GetRenderTargetData( srcBufferResources.Surface, tmpsurface ).Success )
					{
						// Hey, it worked
						// Copy from this surface instead
						var res = D3D9.Surface.FromSurface( dstBufferResources.Surface, tmpsurface, D3D9.Filter.Default, 0, dsrcRect,
						                                    ddestRect );
						if ( res.Failure )
						{
							tmpsurface.SafeDispose();
							tmptex.SafeDispose();
							throw new AxiomException( "D3D9.Surface.FromSurface failed in D3D9HardwarePixelBuffer.Blit" );
						}
						tmpsurface.SafeDispose();
						tmptex.SafeDispose();
						return;
					}
				}

				// Otherwise, try the normal method
				var res2 = D3D9.Surface.FromSurface( dstBufferResources.Surface, srcBufferResources.Surface, D3D9.Filter.Default, 0,
				                                     dsrcRect, ddestRect );
				if ( res2.Failure )
				{
					throw new AxiomException( "D3D9.Surface.FromSurface failed in D3D9HardwarePixelBuffer.Blit" );
				}
			}
			else if ( dstBufferResources.Volume != null && srcBufferResources.Volume != null )
			{
				// Volume-to-volume
				var dsrcBox = ToD3DBox( srcBox );
				var ddestBox = ToD3DBox( dstBox );

				var res = D3D9.Volume.FromVolume( dstBufferResources.Volume, srcBufferResources.Volume, D3D9.Filter.Default, 0,
				                                  dsrcBox, ddestBox );
				if ( res.Failure )
				{
					throw new AxiomException( "D3D9.Volume.FromVolume failed in D3D9HardwarePixelBuffer.Blit" );
				}
			}
			else
			{
				// Software fallback
				base.Blit( rsrc, srcBox, dstBox );
			}
		}