Gamma correction for distance field text.

src/core/SkScalerContext.h

Index: src/core/SkScalerContext.h
diff --git a/src/core/SkScalerContext.h b/src/core/SkScalerContext.h
index f18d217f6208e6628bd02c2e71a69331e65fc30d..e495c8038ec11dd4ec1d72f84674fbe5884d7bea 100644
--- a/src/core/SkScalerContext.h
+++ b/src/core/SkScalerContext.h
@@ -183,6 +183,8 @@ public:
     void        getImage(const SkGlyph&);
     void        getPath(const SkGlyph&, SkPath*);
     void        getFontMetrics(SkPaint::FontMetrics*);
+    void*       getGammaLUTData(int& width, int& height, SkScalar contrast,

[reed1, 2014/05/28 19:45:17]

Need big dox. We almost never return a freshly allocated block, forcing the
caller to accept ownership. We need to document that the caller must call
sk_free on the returned pointer.

[jvanverth1, 2014/05/29 18:53:49]

Changed to get the size of the table first so we can allocate the data locally,
then an accessor to fill the table.

+                                SkScalar paintGamma, SkScalar deviceGamma);
 
 #ifdef SK_BUILD_FOR_ANDROID
     unsigned getBaseGlyphCount(SkUnichar charCode);