1. DomName('WebGL2RenderingContext.invalidateSubFramebuffer')
  2. DocsEditable()
  3. Experimental()
void invalidateSubFramebuffer(int target, List<int> attachments, int x, int y, int width, int height)

Source 

@DomName('WebGL2RenderingContext.invalidateSubFramebuffer')
@DocsEditable()
@Experimental() // untriaged
void invalidateSubFramebuffer(int target, List<int> attachments, int x, int y, int width, int height) => _blink.BlinkWebGL2RenderingContext.instance.invalidateSubFramebuffer_Callback_6_(this, target, attachments, x, y, width, height);