diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/core/SkBitmapProcState_shaderproc.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/core/SkBitmapProcState_shaderproc.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,94 @@
+
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkMathPriv.h"
+
+#define SCALE_FILTER_NAME       MAKENAME(_filter_DX_shaderproc)
+
+// Can't be static in the general case because some of these implementations
+// will be defined and referenced in different object files.
+void SCALE_FILTER_NAME(const SkBitmapProcState& s, int x, int y,
+                       DSTTYPE* SK_RESTRICT colors, int count);
+
+void SCALE_FILTER_NAME(const SkBitmapProcState& s, int x, int y,
+                       DSTTYPE* SK_RESTRICT colors, int count) {
+    SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
+                             SkMatrix::kScale_Mask)) == 0);
+    SkASSERT(s.fInvKy == 0);
+    SkASSERT(count > 0 && colors != NULL);
+    SkASSERT(s.fFilterLevel != SkPaint::kNone_FilterLevel);
+    SkDEBUGCODE(CHECKSTATE(s);)
+
+    const unsigned maxX = s.fBitmap->width() - 1;
+    const SkFixed oneX = s.fFilterOneX;
+    const SkFixed dx = s.fInvSx;
+    SkFixed fx;
+    const SRCTYPE* SK_RESTRICT row0;
+    const SRCTYPE* SK_RESTRICT row1;
+    unsigned subY;
+
+    {
+        SkPoint pt;
+        s.fInvProc(s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf,
+                   SkIntToScalar(y) + SK_ScalarHalf, &pt);
+        SkFixed fy = SkScalarToFixed(pt.fY) - (s.fFilterOneY >> 1);
+        const unsigned maxY = s.fBitmap->height() - 1;
+        // compute our two Y values up front
+        subY = TILEY_LOW_BITS(fy, maxY);
+        int y0 = TILEY_PROCF(fy, maxY);
+        int y1 = TILEY_PROCF((fy + s.fFilterOneY), maxY);
+
+        const char* SK_RESTRICT srcAddr = (const char*)s.fBitmap->getPixels();
+        size_t rb = s.fBitmap->rowBytes();
+        row0 = (const SRCTYPE*)(srcAddr + y0 * rb);
+        row1 = (const SRCTYPE*)(srcAddr + y1 * rb);
+        // now initialize fx
+        fx = SkScalarToFixed(pt.fX) - (oneX >> 1);
+    }
+
+#ifdef PREAMBLE
+    PREAMBLE(s);
+#endif
+
+    do {
+        unsigned subX = TILEX_LOW_BITS(fx, maxX);
+        unsigned x0 = TILEX_PROCF(fx, maxX);
+        unsigned x1 = TILEX_PROCF((fx + oneX), maxX);
+
+        FILTER_PROC(subX, subY,
+                    SRC_TO_FILTER(row0[x0]),
+                    SRC_TO_FILTER(row0[x1]),
+                    SRC_TO_FILTER(row1[x0]),
+                    SRC_TO_FILTER(row1[x1]),
+                    colors);
+        colors += 1;
+
+        fx += dx;
+    } while (--count != 0);
+
+#ifdef POSTAMBLE
+    POSTAMBLE(s);
+#endif
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+#undef TILEX_PROCF
+#undef TILEY_PROCF
+#undef TILEX_LOW_BITS
+#undef TILEY_LOW_BITS
+#undef MAKENAME
+#undef SRCTYPE
+#undef DSTTYPE
+#undef CHECKSTATE
+#undef SRC_TO_FILTER
+#undef FILTER_TO_DST
+#undef PREAMBLE
+#undef POSTAMBLE
+
+#undef SCALE_FILTER_NAME