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Unified Diff: bench/RectoriBench.cpp

Issue 14690014: add bench for blurred rectori case (Closed) Base URL: http://skia.googlecode.com/svn/trunk/
Patch Set: Updated Created 7 years, 7 months ago
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Index: bench/RectoriBench.cpp
===================================================================
--- bench/RectoriBench.cpp (revision 0)
+++ bench/RectoriBench.cpp (revision 0)
@@ -0,0 +1,108 @@
+/*
+ * 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 "SkBenchmark.h"
+#include "SkCanvas.h"
+#include "SkPaint.h"
+#include "SkRandom.h"
+#include "SkBlurMaskFilter.h"
+#include "SkLayerDrawLooper.h"
+
+// This bench replicates a problematic use case of a draw looper used
+// to create an inner blurred rect
+class RectoriBench : public SkBenchmark {
+public:
+ RectoriBench(void* param) : INHERITED(param) {}
+
+protected:
+
+ virtual const char* onGetName() {
+ return "rectori";
+ }
+
+ virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+ SkMWCRandom Random;
+
+ for (int i = 0; i < N; i++) {
+ SkScalar blurRad = Random.nextRangeScalar(1.5f, 25.0f);
+ SkScalar size = Random.nextRangeScalar(20*blurRad, 50*blurRad);
+
+ SkScalar x = Random.nextRangeScalar(0.0f, W - size);
+ SkScalar y = Random.nextRangeScalar(0.0f, H - size);
+
+ SkRect inner = { x, y, x + size, y + size };
+
+ SkRect outer(inner);
+ // outer is always outset either 2x or 4x the blur radius (we go with 2x)
+ outer.outset(SkIntToScalar(2*blurRad), SkIntToScalar(2*blurRad));
+
+ SkPath p;
+
+ p.addRect(outer);
+ p.addRect(inner);
+ p.setFillType(SkPath::kEvenOdd_FillType);
+
+ // This will be used to translate the normal draw outside the
+ // clip rect and translate the blurred version back inside
+ SkScalar translate = 2.0f * size;
+
+ SkPaint paint;
+ paint.setLooper(this->createLooper(-translate, blurRad))->unref();
+ paint.setColor(0xff000000 | Random.nextU());
+ paint.setAntiAlias(true);
+
+ canvas->save();
+ // clip always equals inner rect so we get the inside blur
+ canvas->clipRect(inner);
+ canvas->translate(translate, 0);
+ canvas->drawPath(p, paint);
+ canvas->restore();
+ }
+ }
+
+private:
+ enum {
+ W = 640,
+ H = 480,
+ };
+
+ enum { N = SkBENCHLOOP(100) };
+
+ SkLayerDrawLooper* createLooper(SkScalar xOff, SkScalar radius) {
+ SkLayerDrawLooper* looper = new SkLayerDrawLooper;
+
+ //-----------------------------------------------
+ SkLayerDrawLooper::LayerInfo info;
+
+ info.fFlagsMask = 0;
+ // TODO: add a color filter to better match what is seen in the wild
+ info.fPaintBits = /* SkLayerDrawLooper::kColorFilter_Bit |*/
+ SkLayerDrawLooper::kMaskFilter_Bit;
+ info.fColorMode = SkXfermode::kDst_Mode;
+ info.fOffset.set(xOff, 0);
+ info.fPostTranslate = false;
+
+ SkPaint* paint = looper->addLayer(info);
+
+ SkMaskFilter* mf = SkBlurMaskFilter::Create(SkIntToScalar(radius),
+ SkBlurMaskFilter::kNormal_BlurStyle,
+ SkBlurMaskFilter::kHighQuality_BlurFlag);
+ paint->setMaskFilter(mf)->unref();
+
+ //-----------------------------------------------
+ info.fPaintBits = 0;
+ info.fOffset.set(0, 0);
+
+ paint = looper->addLayer(info);
+ return looper;
+ }
+
+ typedef SkBenchmark INHERITED;
+};
+
+
+DEF_BENCH( return SkNEW_ARGS(RectoriBench, (p)); )
Property changes on: bench\RectoriBench.cpp
___________________________________________________________________
Added: svn:eol-style
+ LF
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