diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/gpu/effects/GrDistanceFieldTextureEffect.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/gpu/effects/GrDistanceFieldTextureEffect.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrDistanceFieldTextureEffect_DEFINED
+#define GrDistanceFieldTextureEffect_DEFINED
+
+#include "GrEffect.h"
+#include "GrVertexEffect.h"
+
+class GrGLDistanceFieldTextureEffect;
+
+/**
+ * The output color of this effect is a modulation of the input color and a sample from a
+ * distance field texture (using a smoothed step function near 0.5).
+ * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
+ * coords are a custom attribute.
+ */
+class GrDistanceFieldTextureEffect : public GrVertexEffect {
+public:
+    static GrEffectRef* Create(GrTexture* tex, const GrTextureParams& p, const SkISize& s) {
+        AutoEffectUnref effect(SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, p, s)));
+        return CreateEffectRef(effect);
+    }
+
+    virtual ~GrDistanceFieldTextureEffect() {}
+
+    static const char* Name() { return "DistanceFieldTexture"; }
+
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+    const SkSize& getSize() const { return fSize; }
+
+    typedef GrGLDistanceFieldTextureEffect GLEffect;
+
+    virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE;
+
+private:
+    GrDistanceFieldTextureEffect(GrTexture* texture, const GrTextureParams& params,
+                                 const SkISize& textureSize);
+
+    virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE;
+
+    GrTextureAccess fTextureAccess;
+    SkSize          fSize;
+
+    GR_DECLARE_EFFECT_TEST;
+
+    typedef GrVertexEffect INHERITED;
+};
+
+#endif