class_docstr: Provides a canvas to render to, using an FBO.
      
class_docstr_tok: ["Provides","a","canvas","to","render","to",",","using","an","FBO","."]
docstr: Set the physical size of the canvas.
          
docstr_tok: ["Set","the","physical","size","of","the","canvas","."]
code: def set_physical_size(self, w, h):
      """Set the physical size of the canvas."""
      self._physical_size = w, h
  
file_path: vispy/vispy/app/backends/_offscreen_util.py
imports: from ..None import Application, Canvas
  from ...None import gloo
label_desc: Use image node_id 3 for calling the FrameBufferHelper obj's underlying member method code with example usage: obj.set_physical_size(w, h) without return types