stop scaling loops and improve warmup bench

bench/RectBench.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkCommandLineFlags.h"
@@ skipping 96 matching lines @@
         return fName.c_str();
     }
 
 private:
     SkString fName;
     SkXfermode* fMode;
 
     typedef RectBench INHERITED;
 };
 
+class TransparentRectBench : public RectBench {
+public:
+    TransparentRectBench() : INHERITED(1, 0) {}
+
+protected:
+    void setupPaint(SkPaint* paint) override {
+        this->INHERITED::setupPaint(paint);
+        // draw non opaque rect
+        paint->setAlpha(0x80);
+    }
+
+    const char* onGetName() override {
+        fName.set(this->INHERITED::onGetName());
+        fName.prepend("transparent_");
+        return fName.c_str();
+    }
+
+private:
+    SkString fName;
+
+    typedef RectBench INHERITED;
+};
+
+
 class OvalBench : public RectBench {
 public:
     OvalBench(int shift, int stroke = 0) : RectBench(shift, stroke) {}
 protected:
     virtual void drawThisRect(SkCanvas* c, const SkRect& r, const SkPaint& p) {
         c->drawOval(r, p);
     }
     virtual const char* onGetName() { return computeName("ovals"); }
 };
 
@@ skipping 135 matching lines @@
 DEF_BENCH(return new RRectBench(1);)
 DEF_BENCH(return new RRectBench(1, 4);)
 DEF_BENCH(return new RRectBench(3);)
 DEF_BENCH(return new RRectBench(3, 4);)
 DEF_BENCH(return new PointsBench(SkCanvas::kPoints_PointMode, "points");)
 DEF_BENCH(return new PointsBench(SkCanvas::kLines_PointMode, "lines");)
 DEF_BENCH(return new PointsBench(SkCanvas::kPolygon_PointMode, "polygon");)
 
 DEF_BENCH(return new SrcModeRectBench();)
 
+DEF_BENCH(return new TransparentRectBench();)
+
 /* init the blitmask bench
  */
 DEF_BENCH(return new BlitMaskBench(SkCanvas::kPoints_PointMode,
                                    BlitMaskBench::kMaskOpaque,
                                    "maskopaque");)
 DEF_BENCH(return new BlitMaskBench(SkCanvas::kPoints_PointMode,
                                    BlitMaskBench::kMaskBlack,
                                    "maskblack");)
 DEF_BENCH(return new BlitMaskBench(SkCanvas::kPoints_PointMode,
                                    BlitMaskBench::kMaskColor,
                                    "maskcolor");)
 DEF_BENCH(return new BlitMaskBench(SkCanvas::kPoints_PointMode,
                                    BlitMaskBench::KMaskShader,
                                    "maskshader");)