add LocalMatrixImageFilter

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 1280 matching lines @@
     SkPaint tmp;
     if (nullptr == paint) {
         paint = &tmp;
     }
 
     LOOPER_BEGIN_DRAWDEVICE(*paint, SkDrawFilter::kBitmap_Type)
     while (iter.next()) {
         SkBaseDevice* dstDev = iter.fDevice;
         paint = &looper.paint();
         SkImageFilter* filter = paint->getImageFilter();
+
+        SkAutoTUnref<SkImageFilter> localFilter;
+        if (filter) {
+            localFilter.reset(filter->newWithLocalMatrix(SkMatrix::I()));
+            filter = localFilter;
+        }
+
         SkIPoint pos = { x - iter.getX(), y - iter.getY() };
         if (filter && !dstDev->canHandleImageFilter(filter)) {
             SkImageFilter::DeviceProxy proxy(dstDev);
             SkBitmap dst;
             SkIPoint offset = SkIPoint::Make(0, 0);
             const SkBitmap& src = srcDev->accessBitmap(false);
             SkMatrix matrix = *iter.fMatrix;
             matrix.postTranslate(SkIntToScalar(-pos.x()), SkIntToScalar(-pos.y()));
             SkIRect clipBounds = SkIRect::MakeWH(srcDev->width(), srcDev->height());
             SkAutoTUnref<SkImageFilter::Cache> cache(dstDev->getImageFilterCache());
@@ skipping 32 matching lines @@
     SkPaint tmp;
     if (nullptr == paint) {
         paint = &tmp;
     }
 
     LOOPER_BEGIN_DRAWDEVICE(*paint, SkDrawFilter::kBitmap_Type)
 
     while (iter.next()) {
         paint = &looper.paint();
         SkImageFilter* filter = paint->getImageFilter();
+
+        SkAutoTUnref<SkImageFilter> localFilter;
+        if (filter) {
+            localFilter.reset(filter->newWithLocalMatrix(SkMatrix::I()));
+            filter = localFilter;
+        }
+
         SkIPoint pos = { x - iter.getX(), y - iter.getY() };
         if (filter && !iter.fDevice->canHandleImageFilter(filter)) {
             SkImageFilter::DeviceProxy proxy(iter.fDevice);
             SkBitmap dst;
             SkIPoint offset = SkIPoint::Make(0, 0);
             SkMatrix matrix = *iter.fMatrix;
             matrix.postTranslate(SkIntToScalar(-pos.x()), SkIntToScalar(-pos.y()));
             const SkIRect clipBounds = bitmap.bounds();
             SkAutoTUnref<SkImageFilter::Cache> cache(iter.fDevice->getImageFilterCache());
             SkImageFilter::Context ctx(matrix, clipBounds, cache.get());
@@ skipping 1517 matching lines @@
     }
 
     if (matrix) {
         canvas->concat(*matrix);
     }
 }
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }