Axiom.RenderSystems.OpenGL.GLFBORTTManager.RequestRenderBuffer C# (CSharp) Method

GLFBORTTManager Class Documentation 显示文件 Open project: WolfgangSt/axiom

RequestRenderBuffer() public method

Request a render buffer. If format is Gl.GL_NONE, return a zero buffer.

public RequestRenderBuffer ( int format, int width, int height ) : Axiom.RenderSystems.OpenGL.GLSurfaceDesc
format	int
width	int
height	int
return	Axiom.RenderSystems.OpenGL.GLSurfaceDesc

		public GLSurfaceDesc RequestRenderBuffer( int format, int width, int height )
		{
			GLSurfaceDesc retval = new GLSurfaceDesc();

			retval.Buffer = null; // Return 0 buffer if GL_NONE is requested
			if ( format != Gl.GL_NONE )
			{
				RBFormat key = new RBFormat( format, width, height );
				RBRef value;
				if ( _renderBufferMap.TryGetValue( key, out value ) )
				{
					retval.Buffer = value.Buffer;
					retval.ZOffset = 0;
					// Increase refcount
					value.Refcount++;
				}
				else
				{
					// New one
					GLRenderBuffer rb = new GLRenderBuffer( format, width, height, 0 );
					_renderBufferMap[ key ] = new RBRef( rb );
					retval.Buffer = rb;
					retval.ZOffset = 0;
				}
			}
			LogManager.Instance.Write( "Requested renderbuffer with format " + format.ToString() + " of " + width.ToString() + "x" + height.ToString() + "." );
			return retval;
		}