diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/core/SkDrawProcs.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/core/SkDrawProcs.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,90 @@
+
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkDrawProcs_DEFINED
+#define SkDrawProcs_DEFINED
+
+#include "SkBlitter.h"
+#include "SkDraw.h"
+
+class SkAAClip;
+class SkBlitter;
+
+struct SkDraw1Glyph {
+    const SkDraw* fDraw;
+    SkBounder* fBounder;
+    const SkRegion* fClip;
+    const SkAAClip* fAAClip;
+    SkBlitter* fBlitter;
+    SkGlyphCache* fCache;
+    const SkPaint* fPaint;
+    SkIRect fClipBounds;
+    /** Half the sampling frequency of the rasterized glyph in x. */
+    SkFixed fHalfSampleX;
+    /** Half the sampling frequency of the rasterized glyph in y. */
+    SkFixed fHalfSampleY;
+
+    /** Draws one glyph.
+     *
+     *  The x and y are pre-biased, so implementations may just truncate them.
+     *  i.e. half the sampling frequency has been added.
+     *  e.g. 1/2 or 1/(2^(SkGlyph::kSubBits+1)) has already been added.
+     *  This added bias can be found in fHalfSampleX,Y.
+     */
+    typedef void (*Proc)(const SkDraw1Glyph&, SkFixed x, SkFixed y, const SkGlyph&);
+
+    Proc init(const SkDraw* draw, SkBlitter* blitter, SkGlyphCache* cache,
+              const SkPaint&);
+
+    // call this instead of fBlitter->blitMask() since this wrapper will handle
+    // the case when the mask is ARGB32_Format
+    //
+    void blitMask(const SkMask& mask, const SkIRect& clip) const {
+        if (SkMask::kARGB32_Format == mask.fFormat) {
+            this->blitMaskAsSprite(mask);
+        } else {
+            fBlitter->blitMask(mask, clip);
+        }
+    }
+
+    // mask must be kARGB32_Format
+    void blitMaskAsSprite(const SkMask& mask) const;
+};
+
+struct SkDrawProcs {
+    SkDraw1Glyph::Proc  fD1GProc;
+};
+
+bool SkDrawTreatAAStrokeAsHairline(SkScalar strokeWidth, const SkMatrix&,
+                                   SkScalar* coverage);
+
+/**
+ *  If the current paint is set to stroke and the stroke-width when applied to
+ *  the matrix is <= 1.0, then this returns true, and sets coverage (simulating
+ *  a stroke by drawing a hairline with partial coverage). If any of these
+ *  conditions are false, then this returns false and coverage is ignored.
+ */
+inline bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix,
+                                  SkScalar* coverage) {
+    if (SkPaint::kStroke_Style != paint.getStyle()) {
+        return false;
+    }
+
+    SkScalar strokeWidth = paint.getStrokeWidth();
+    if (0 == strokeWidth) {
+        *coverage = SK_Scalar1;
+        return true;
+    }
+
+    if (!paint.isAntiAlias()) {
+        return false;
+    }
+
+    return SkDrawTreatAAStrokeAsHairline(strokeWidth, matrix, coverage);
+}
+
+#endif