Fix matplotlib#3057: Don't composite when interpolation == 'none'

mdboom · Jan 28, 2016 · fe3a171 · fe3a171
1 parent e7834af
commit fe3a171
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -2319,7 +2319,9 @@ def draw(self, renderer=None, inframe=False):
 
         # add images to dsu if the backend supports compositing.
         # otherwise, does the manual compositing  without adding images to dsu.
-        if len(self.images) <= 1 or renderer.option_image_nocomposite():
+        if (len(self.images) <= 1 or
+                renderer.option_image_nocomposite() or
+                any(im.get_interpolation() == 'none' for im in self.images)):
             _do_composite = False
         else:
             _do_composite = True

diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -1248,7 +1248,7 @@ def draw(self, renderer):
             not_composite = self.suppressComposite
 
         if (len(self.images) <= 1 or not_composite or
-                not cbook.allequal([im.origin for im in self.images])):
+                any(im.get_interpolation() == 'none' for im in self.images)):
             for a in self.images:
                 dsu.append((a.get_zorder(), a, a.draw, [renderer]))
         else: