X-Git-Url: http://git.webkit.org/?p=WebKit-https.git;a=blobdiff_plain;f=Source%2FWebCore%2FChangeLog;h=93226ac7002fb8f88791efad32638000d6edb38c;hp=4114a2f52645846c9d821a71809a2db99a99e0c1;hb=dcc85c3cdfb81b5a44f00e56370d014882408667;hpb=acf8d5cb0bc6e5eed42a68cf3e343dc03ebade08

diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index 4114a2f..93226ac 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,28 @@
+2017-04-04  Simon Fraser  <simon.fraser@apple.com>
+
+        Do some minor FEColorMatrix code cleanup and optimization
+        https://bugs.webkit.org/show_bug.cgi?id=170474
+
+        Reviewed by Dean Jackson.
+
+        Don't switch inside of a pixel processing loop; repeat the loop inside switch (filterType).
+        
+        Change matrix() and saturateAndHueRotate() to dereference the source pixels once, instead
+        of multiple times, which is faster.
+        
+        This kind of code benefits from aligning things with spaces for readability, so do so,
+        violating webkit style.
+        
+        Add some off-by-default performance logging code.
+
+        Increases pixel processing performance from about 86ms per megapixel to 65ms per megapixel.
+
+        * platform/graphics/filters/FEColorMatrix.cpp:
+        (WebCore::matrix):
+        (WebCore::saturateAndHueRotate):
+        (WebCore::effectType):
+        (WebCore::FEColorMatrix::platformApplySoftware):
+
 2017-04-06  Ryan Haddad  <ryanhaddad@apple.com>
 
         Unreviewed, rolling out r215041.