use SkIntToScalar

src/effects/SkBlendImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBlendImageFilter.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
@@ skipping 68 matching lines @@
     }
     SkAutoLockPixels alp_foreground(foreground), alp_background(background);
     if (!foreground.getPixels() || !background.getPixels()) {
         return false;
     }
     dst->setConfig(background.config(), background.width(), background.height());
     dst->allocPixels();
     SkCanvas canvas(*dst);
     SkPaint paint;
     paint.setXfermodeMode(SkXfermode::kSrc_Mode);
-    canvas.drawBitmap(background, backgroundOffset.fX, backgroundOffset.fY, &paint);
+    canvas.drawBitmap(background, SkIntToScalar(backgroundOffset.fX),
+                      SkIntToScalar(backgroundOffset.fY), &paint);
     paint.setXfermodeMode(modeToXfermode(fMode));
-    canvas.drawBitmap(foreground, foregroundOffset.fX, foregroundOffset.fY, &paint);
+    canvas.drawBitmap(foreground, SkIntToScalar(foregroundOffset.fX),
+                      SkIntToScalar(foregroundOffset.fY), &paint);
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #if SK_SUPPORT_GPU
 class GrGLBlendEffect : public GrGLEffect {
 public:
     GrGLBlendEffect(const GrBackendEffectFactory&, const GrDrawEffect&);
     virtual ~GrGLBlendEffect();
@@ skipping 235 matching lines @@
     EffectKey bgKey = GrGLEffectMatrix::GenKey(GrEffect::MakeDivByTextureWHMatrix(bgTex),
                                                drawEffect,
                                                kCoordsType,
                                                bgTex);
     bgKey <<= GrGLEffectMatrix::kKeyBits;
     EffectKey modeKey = blend.mode() << (2 * GrGLEffectMatrix::kKeyBits);
 
     return  modeKey | bgKey | fgKey;
 }
 #endif