1. DomName('WebGL2RenderingContext.blendFunc')
  2. DocsEditable()
  3. Experimental()
void blendFunc(int sfactor, int dfactor)

Source 

@DomName('WebGL2RenderingContext.blendFunc')
@DocsEditable()
@Experimental() // untriaged
void blendFunc(int sfactor, int dfactor) => _blink.BlinkWebGL2RenderingContext.instance.blendFunc_Callback_2_(this, sfactor, dfactor);