Image filters: refactor input GPU processing into filterInputGPU().

src/effects/SkDisplacementMapEffect.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDisplacementMapEffect.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
@@ skipping 366 matching lines @@
     SkDisplacementMapEffect::ChannelSelectorType fYChannelSelector;
     SkVector fScale;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
 bool SkDisplacementMapEffect::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                              SkBitmap* result, SkIPoint* offset) const {
     SkBitmap colorBM = src;
     SkIPoint colorOffset = SkIPoint::Make(0, 0);
-    if (this->getColorInput() && 
-        !this->getColorInput()->getInputResultGPU(proxy, src, ctx, &colorBM, &colorOffset)) {
+    if (!this->filterInputGPU(1, proxy, src, ctx, &colorBM, &colorOffset)) {
         return false;
     }
     SkBitmap displacementBM = src;
     SkIPoint displacementOffset = SkIPoint::Make(0, 0);
-    if (this->getDisplacementInput() &&
-        !this->getDisplacementInput()->getInputResultGPU(proxy, src, ctx, &displacementBM,
-                                                         &displacementOffset)) {
+    if (!this->filterInputGPU(0, proxy, src, ctx, &displacementBM, &displacementOffset)) {
         return false;
     }
     SkIRect bounds;
     // Since GrDisplacementMapEffect does bounds checking on color pixel access, we don't need to
     // pad the color bitmap to bounds here.
     if (!this->applyCropRect(ctx, colorBM, colorOffset, &bounds)) {
         return false;
     }
     SkIRect displBounds;
     if (!this->applyCropRect(ctx, proxy, displacementBM,
@@ skipping 218 matching lines @@
                                        const GrGLSLCaps&, GrProcessorKeyBuilder* b) {
     const GrDisplacementMapEffect& displacementMap = proc.cast<GrDisplacementMapEffect>();
 
     uint32_t xKey = displacementMap.xChannelSelector();
     uint32_t yKey = displacementMap.yChannelSelector() << kChannelSelectorKeyBits;
 
     b->add32(xKey | yKey);
 }
 #endif