Skia Filter Quality and Scaling Metrics

src/core/SkBitmapDevice.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 "SkBitmapDevice.h"
 #include "SkConfig8888.h"
 #include "SkDraw.h"
@@ skipping 227 matching lines @@
 
 void SkBitmapDevice::drawPath(const SkDraw& draw, const SkPath& path,
                               const SkPaint& paint, const SkMatrix* prePathMatrix,
                               bool pathIsMutable) {
     CHECK_FOR_ANNOTATION(paint);
     draw.drawPath(path, paint, prePathMatrix, pathIsMutable);
 }
 
 void SkBitmapDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
                                 const SkMatrix& matrix, const SkPaint& paint) {
+    logDrawScaleFactor(SkMatrix::Concat(*draw.fMatrix, matrix), paint.getFilterQuality());
     draw.drawBitmap(bitmap, matrix, nullptr, paint);
 }
 
 void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
                                     const SkRect* src, const SkRect& dst,
                                     const SkPaint& paint, SkCanvas::SrcRectConstraint constraint) {
     SkMatrix    matrix;
     SkRect      bitmapBounds, tmpSrc, tmpDst;
     SkBitmap    tmpBitmap;
 
     bitmapBounds.isetWH(bitmap.width(), bitmap.height());
 
     // Compute matrix from the two rectangles
     if (src) {
         tmpSrc = *src;
     } else {
         tmpSrc = bitmapBounds;
     }
     matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit);
 
+    logDrawScaleFactor(SkMatrix::Concat(*draw.fMatrix, matrix), paint.getFilterQuality());
+
     const SkRect* dstPtr = &dst;
     const SkBitmap* bitmapPtr = &bitmap;
 
     // clip the tmpSrc to the bounds of the bitmap, and recompute dstRect if
     // needed (if the src was clipped). No check needed if src==null.
     if (src) {
         if (!bitmapBounds.contains(*src)) {
             if (!tmpSrc.intersect(bitmapBounds)) {
                 return; // nothing to draw
             }
@@ skipping 109 matching lines @@
         paint.getRasterizer() ||
         paint.getPathEffect() ||
         paint.isFakeBoldText() ||
         paint.getStyle() != SkPaint::kFill_Style ||
         !SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode))
     {
         return true;
     }
     return false;
 }