Implement support for a Context parameter in image filters

src/effects/SkBicubicImageFilter.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 "SkBicubicImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 64 matching lines @@
     SkScalar g = SkScalarMul(cc[0], SkGetPackedG32(c0)) + SkScalarMul(cc[1], SkGetPackedG32(c1)) + SkScalarMul(cc[2], SkGetPackedG32(c2)) + SkScalarMul(cc[3], SkGetPackedG32(c3));
     SkScalar b = SkScalarMul(cc[0], SkGetPackedB32(c0)) + SkScalarMul(cc[1], SkGetPackedB32(c1)) + SkScalarMul(cc[2], SkGetPackedB32(c2)) + SkScalarMul(cc[3], SkGetPackedB32(c3));
     return SkPackARGB32(SkScalarRoundToInt(a),
                         SkScalarRoundToInt(SkScalarClampMax(r, a)),
                         SkScalarRoundToInt(SkScalarClampMax(g, a)),
                         SkScalarRoundToInt(SkScalarClampMax(b, a)));
 }
 
 bool SkBicubicImageFilter::onFilterImage(Proxy* proxy,
                                          const SkBitmap& source,
-                                         const SkMatrix& matrix,
+                                         const Context& ctx,
                                          SkBitmap* result,
                                          SkIPoint* offset) const {
     SkBitmap src = source;
     SkIPoint srcOffset = SkIPoint::Make(0, 0);
-    if (getInput(0) && !getInput(0)->filterImage(proxy, source, matrix, &src, &srcOffset)) {
+    if (getInput(0) && !getInput(0)->filterImage(proxy, source, ctx, &src, &srcOffset)) {
         return false;
     }
 
     if (src.colorType() != kPMColor_SkColorType) {
         return false;
     }
 
     SkAutoLockPixels alp(src);
     if (!src.getPixels()) {
         return false;
@@ skipping 60 matching lines @@
     }
     offset->fX = dstIRect.fLeft;
     offset->fY = dstIRect.fTop;
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #if SK_SUPPORT_GPU
 
-bool SkBicubicImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm,
+bool SkBicubicImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                           SkBitmap* result, SkIPoint* offset) const {
     SkBitmap srcBM = src;
-    if (getInput(0) && !getInput(0)->getInputResultGPU(proxy, src, ctm, &srcBM, offset)) {
+    if (getInput(0) && !getInput(0)->getInputResultGPU(proxy, src, ctx, &srcBM, offset)) {
         return false;
     }
     GrTexture* srcTexture = srcBM.getTexture();
     GrContext* context = srcTexture->getContext();
 
     SkRect dstRect = SkRect::MakeWH(srcBM.width() * fScale.fWidth,
                                     srcBM.height() * fScale.fHeight);
 
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
@@ skipping 11 matching lines @@
     paint.addColorEffect(GrBicubicEffect::Create(srcTexture, fCoefficients))->unref();
     SkRect srcRect;
     srcBM.getBounds(&srcRect);
     context->drawRectToRect(paint, dstRect, srcRect);
     WrapTexture(dst, desc.fWidth, desc.fHeight, result);
     return true;
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////