A simple SVG file display incompetely

[Load]

Hello everyone!
I am trying to write a simple SVG file which is a rounded rectangle,I use the PShape method to switch the SVG file to a PShape Object.
Through the SVG can be displayed by Edge browser,in the Processing it lose orginal rounded corners.
My SVG file is shown below.

<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
  <rect x="0" y="0" width="100" height="100" rx="20" ry="20" fill="#000000" />
  <rect x="10" y="10" width="80" height="80" rx="20" ry="20" fill="#FFFFFf"/>
</svg> 

This is the return of Processing:

The processing code:

PShape s;
void setup(){
  size(200,200);
  s=loadShape("box_round.svg");
}
void draw(){
  shape(s,10,10);
}

So what is this for?Sincerely waiting for your reply.

[micuat]

I’m guessing that Processing’s SVG parser doesn’t support rx and ry properties

processing/processing/blob/a6e0e227a948e7e2dc042c04504d6f5b8cf0c1a6/core/src/processing/core/PShapeSVG.java#L443

Other way may be to use paths instead of rects. SVG’s path has a property called stroke-linejoin to set the corners, and this seems to be properly read by processing.

With the SVG from MDN doc, I tested something like this

PShape s;
void setup(){
  size(1000,1000);
  s=loadShape("paths.svg");
}
void draw(){
  shape(s,0,0,1000,1000);
}