From 039a7a670f5e8bdfc0c8dbbb032e7a590e1bd024 Mon Sep 17 00:00:00 2001
From: Brendan Dahl <brendan.dahl@gmail.com>
Date: Wed, 3 Nov 2021 11:46:52 -0700
Subject: [PATCH] Reset path bounding box tracking when starting a new path.

Starting a new path will wipe out any of the current subpaths in the
current graphics state, so we should reset the min/maxes.

This makes a number of the bounding boxes smaller and reduces the number
of composed pixels. For the smask tests in the corpus, the number of
composed pixesl goes from 19,872,109 to 19,676,905. The difference is much
larger on other PDFs though.
---
 src/display/canvas.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/display/canvas.js b/src/display/canvas.js
index 205b6cfb5..c29f1cc9f 100644
--- a/src/display/canvas.js
+++ b/src/display/canvas.js
@@ -3071,6 +3071,7 @@ class CanvasGraphics {
       }
       this.pendingClip = null;
     }
+    this.current.startNewPathAndClipBox(this.current.clipBox);
     ctx.beginPath();
   }