Axiom.RenderSystems.DirectX9.D3DTexture.CreateVolumeTexture C# (CSharp) Метод

		private void CreateVolumeTexture()
		{
			Debug.Assert( Width > 0 && Height > 0 && Depth > 0 );

			if ( ( Usage & TextureUsage.RenderTarget ) != 0 )
			{
				throw new Exception( "SDX Volume texture can not be declared as render target!!, SDXTexture.CreateVolumeTexture" );
			}

			D3D.Format sdPF = ChooseD3DFormat();
			D3D.Usage usage = 0;

			int numMips = ( RequestedMipmapCount == 0x7FFFFFFF ) ? -1 : RequestedMipmapCount + 1;
			if ( ( Usage & TextureUsage.Dynamic ) != 0 )
			{
				if ( CanUseDynamicTextures( usage, D3D.ResourceType.VolumeTexture, sdPF ) )
				{
					usage |= D3D.Usage.Dynamic;
					_dynamicTextures = true;
				}
				else
				{
					_dynamicTextures = false;
				}
			}

			// check if mip map volume textures are supported
			MipmapsHardwareGenerated = false;
			if ( ( _devCaps.TextureCaps & D3D.TextureCaps.MipVolumeMap ) != 0 )
			{
				if ( ( Usage & TextureUsage.AutoMipMap ) != 0 && RequestedMipmapCount != 0 )
				{
					MipmapsHardwareGenerated = CanAutoGenMipMaps( usage, D3D.ResourceType.VolumeTexture, sdPF );
					if ( MipmapsHardwareGenerated )
					{
						Usage |= TextureUsage.AutoMipMap;
						numMips = 0;
					}
				}
			}
			else
			{
				// no mip map support for this kind of textures :(
				MipmapCount = 0;
				numMips = 1;
			}

			// derive the pool to use
			DeterminePool();

			// create the texture
			_volumeTexture = new D3D.VolumeTexture( _device,
													Width,
													Height,
													Depth,
													numMips,
													usage,
													sdPF,
													_d3dPool );

			// store base reference to the texture
			_texture = _volumeTexture;

			// set the final texture attributes
			D3D.VolumeDescription desc = _volumeTexture.GetLevelDescription( 0 );
			SetFinalAttributes( desc.Width, desc.Height, desc.Depth, D3DHelper.ConvertEnum( desc.Format ) );

			if ( this.MipmapsHardwareGenerated )
				_texture.AutoMipGenerationFilter = GetBestFilterMethod();
		}