From fff3a40767df6d3a913c146d96b2b4284dffb4c5 Mon Sep 17 00:00:00 2001
From: Florin Malita <fmalita@chromium.org>
Date: Wed, 19 Jul 2017 10:32:28 -0400
Subject: Singleton SRGB color filters

Change-Id: I67e976e63bbb9ebb47616613e02adb97e6e2345c
Reviewed-on: https://skia-review.googlesource.com/24303
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
---
 src/core/SkColorFilter.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/core/SkColorFilter.cpp b/src/core/SkColorFilter.cpp
index d8e68c8db5..454fdb267c 100644
--- a/src/core/SkColorFilter.cpp
+++ b/src/core/SkColorFilter.cpp
@@ -277,14 +277,18 @@ void SkSRGBGammaColorFilter::toString(SkString* str) const {
 }
 #endif
 
+template <SkSRGBGammaColorFilter::Direction dir>
+sk_sp<SkColorFilter> MakeSRGBGammaCF() {
+    static SkColorFilter* gSingleton = new SkSRGBGammaColorFilter(dir);
+    return sk_ref_sp(gSingleton);
+}
+
 sk_sp<SkColorFilter> SkColorFilter::MakeLinearToSRGBGamma() {
-    return sk_sp<SkColorFilter>(new SkSRGBGammaColorFilter(
-                                               SkSRGBGammaColorFilter::Direction::kLinearToSRGB));
+    return MakeSRGBGammaCF<SkSRGBGammaColorFilter::Direction::kLinearToSRGB>();
 }
 
 sk_sp<SkColorFilter> SkColorFilter::MakeSRGBToLinearGamma() {
-    return sk_sp<SkColorFilter>(new SkSRGBGammaColorFilter(
-                                               SkSRGBGammaColorFilter::Direction::kSRGBToLinear));
+    return MakeSRGBGammaCF<SkSRGBGammaColorFilter::Direction::kSRGBToLinear>();
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
-- 
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