Switch textures created by DeviceImageFilterProxy to approx-match.

src/effects/SkXfermodeImageFilter.cpp

 /*
  * Copyright 2013 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 "SkXfermodeImageFilter.h"
 #include "SkCanvas.h"
 #include "SkDevice.h"
 #include "SkColorPriv.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkXfermode.h"
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
-#include "effects/GrSimpleTextureEffect.h"
+#include "effects/GrTextureDomain.h"
 #include "SkGr.h"
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkXfermodeImageFilter::SkXfermodeImageFilter(SkXfermode* mode,
                                              SkImageFilter* inputs[2],
                                              const CropRect* cropRect)
   : INHERITED(2, inputs, cropRect), fMode(mode) {
     SkSafeRef(fMode);
@@ skipping 134 matching lines @@
 
     SkMatrix foregroundMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(foregroundTex);
     foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
                                   SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));
 
 
     SkRect srcRect;
     src.getBounds(&srcRect);
 
     GrPaint paint;
-    paint.addColorTextureProcessor(foregroundTex, foregroundMatrix);
+    SkAutoTUnref<GrFragmentProcessor> foregroundDomain(GrTextureDomainEffect::Create(
+        foregroundTex, foregroundMatrix,
+        GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
+        GrTextureDomain::kDecal_Mode,
+        GrTextureParams::kNone_FilterMode)
+    );
+
+    paint.addColorProcessor(foregroundDomain.get());
     paint.addColorProcessor(xferProcessor)->unref();
     context->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, SkMatrix::I(), srcRect);
 
     offset->fX = backgroundOffset.fX;
     offset->fY = backgroundOffset.fY;
     WrapTexture(dst, src.width(), src.height(), result);
     return true;
 }
 
 #endif