share code with drawSpriteWithFilter

src/core/SkCanvas.cpp

 /*
  * Copyright 2008 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 "SkBitmapDevice.h"
 #include "SkCanvas.h"
 #include "SkCanvasPriv.h"
@@ skipping 1432 matching lines @@
         paint = &tmp;
     }
 
     LOOPER_BEGIN_DRAWDEVICE(*paint, SkDrawFilter::kBitmap_Type)
     while (iter.next()) {
         SkBaseDevice* dstDev = iter.fDevice;
         paint = &looper.paint();
         SkImageFilter* filter = paint->getImageFilter();
         SkIPoint pos = { x - iter.getX(), y - iter.getY() };
         if (filter) {
-            SkIPoint offset = SkIPoint::Make(0, 0);
             const SkBitmap& srcBM = srcDev->accessBitmap(false);
-            SkMatrix matrix = *iter.fMatrix;
-            matrix.postTranslate(SkIntToScalar(-pos.x()), SkIntToScalar(-pos.y()));
-            const SkIRect clipBounds = iter.fClip->getBounds().makeOffset(-pos.x(), -pos.y());
-            SkAutoTUnref<SkImageFilter::Cache> cache(dstDev->getImageFilterCache());
-            SkImageFilter::Context ctx(matrix, clipBounds, cache.get());
-
-            sk_sp<SkSpecialImage> srcImg(SkSpecialImage::internal_fromBM(srcBM,
-                                                                         &dstDev->surfaceProps()));
-            if (!srcImg) {
-                continue; // something disastrous happened
-            }
-
-            sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
-            if (resultImg) {
-                SkPaint tmpUnfiltered(*paint);
-                tmpUnfiltered.setImageFilter(nullptr);
-                SkBitmap resultBM;
-                if (resultImg->internal_getBM(&resultBM)) {
-                    // TODO: add drawSprite(SkSpecialImage) to SkDevice? (see skbug.com/5073)
-                    dstDev->drawSprite(iter, resultBM, pos.x() + offset.x(), pos.y() + offset.y(),
-                                       tmpUnfiltered);
-                }
-            }
+            dstDev->drawSpriteWithFilter(iter, srcBM, pos.x(), pos.y(), *paint);
         } else if (deviceIsBitmapDevice) {
             const SkBitmap& src = static_cast<SkBitmapDevice*>(srcDev)->fBitmap;
             dstDev->drawSprite(iter, src, pos.x(), pos.y(), *paint);
         } else {
             dstDev->drawDevice(iter, srcDev, pos.x(), pos.y(), *paint);
         }
     }
     LOOPER_END
 }
 
@@ skipping 1606 matching lines @@
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }
 
 #ifdef SK_SUPPORT_LEGACY_NEW_SURFACE_API
 SkSurface* SkCanvas::newSurface(const SkImageInfo& info, const SkSurfaceProps* props) {
     return this->makeSurface(info, props).release();
 }
 #endif