minor changes

Author: Gaurav-1306

src/core/p5.Renderer.js

@@ -158,11 +158,11 @@ class Renderer extends p5.Element {
     // get(x,y,w,h)
     }
 
-    const region = new p5.Image(w, h);
+    const region = new p5.Image(w*pd, h*pd);
     region._pixelDensity = pd;
     region.canvas
       .getContext('2d')
-      .drawImage(canvas, x, y, w * pd, h * pd, 0, 0, w, h);
+      .drawImage(canvas, x, y, w * pd, h * pd, 0, 0, w*pd, h*pd);
 
     return region;
   }