Working plumb of image scaling:

src/opts/SkBitmapFilter_opts_SSE2.cpp

Index: src/opts/SkBitmapFilter_opts_SSE2.cpp
diff --git a/src/opts/SkBitmapFilter_opts_SSE2.cpp b/src/opts/SkBitmapFilter_opts_SSE2.cpp
index 685ec77f49f9d908afef189154d122f8b7cfead0..b7d8fd235fe86d236ddf60451000d0accbef1ebf 100644
--- a/src/opts/SkBitmapFilter_opts_SSE2.cpp
+++ b/src/opts/SkBitmapFilter_opts_SSE2.cpp
@@ -72,10 +72,10 @@ void highQualityFilter_SSE2(const SkBitmapProcState& s, int x, int y,
         int x1 = SkTMin(maxX, int(floor(sx+s.getBitmapFilter()->width() + 0.5f)));
 
         for (int src_y = y0; src_y <= y1; src_y++) {
-            float yweight = s.getBitmapFilter()->lookupFloat( (srcPt.fY - src_y) );
+            float yweight = SkScalarToFloat(s.getBitmapFilter()->lookupScalar(srcPt.fY - src_y));
 
             for (int src_x = x0; src_x <= x1 ; src_x++) {
-                float xweight = s.getBitmapFilter()->lookupFloat( (srcPt.fX - src_x) );
+                float xweight = SkScalarToFloat(s.getBitmapFilter()->lookupScalar(srcPt.fX - src_x));
 
                 float combined_weight = xweight * yweight;
 
@@ -139,10 +139,10 @@ void highQualityFilter_ScaleOnly_SSE2(const SkBitmapProcState &s, int x, int y,
         int x1 = SkTMin(maxX, int(floor(sx+s.getBitmapFilter()->width() + 0.5f)));
 
         for (int src_y = y0; src_y <= y1; src_y++) {
-            float yweight = s.getBitmapFilter()->lookupFloat( (srcPt.fY - src_y) );
+            float yweight = SkScalarToFloat(s.getBitmapFilter()->lookupScalar(srcPt.fY - src_y));
 
             for (int src_x = x0; src_x <= x1 ; src_x++) {
-                float xweight = s.getBitmapFilter()->lookupFloat( (srcPt.fX - src_x) );
+                float xweight = SkScalarToFloat(s.getBitmapFilter()->lookupScalar(srcPt.fX - src_x));
 
                 float combined_weight = xweight * yweight;