commit 022afb8384019b448c7c1c62a9ff63fa9e477737
author halcanary <halcanary@google.com> Fri Jan 30 11:00:12 2015 -0800
committer Commit bot <commit-bot@chromium.org> Fri Jan 30 11:00:12 2015 -0800
tree 13d646c61c5dd75b1515c9d5f2d4b76532001be2
parent 23b03c3c5a79d624c12bd1af5d11ba87967c53e2

DM::NullSink

Motivation:  The null sink can act as a control for experiments.

Review URL: https://codereview.chromium.org/873723007

dm/DM.cpp

diff --git a/dm/DM.cpp b/dm/DM.cpp
index 15c1cfa..e162e77 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -221,6 +221,7 @@
         SINK("8888", RasterSink, kN32_SkColorType);
         SINK("pdf",  PDFSink);
         SINK("skp",  SKPSink);
+        SINK("null",  NullSink);
     }
 #undef SINK
     return NULL;
@@ -339,7 +340,8 @@
                 const char* ext = task->sink->fileExtension();
                 if (data->getLength()) {
                     WriteToDisk(*task, md5, ext, data, data->getLength(), NULL);
-                } else {
+                    SkASSERT(bitmap.drawsNothing());
+                } else if (!bitmap.drawsNothing()) {
                     WriteToDisk(*task, md5, ext, NULL, 0, &bitmap);
                 }
             }