36352bf5e3
NOPRESUBMIT=true BUG=skia: DOCS_PREVIEW= https://skia.org/?cl=1037793002 Review URL: https://codereview.chromium.org/1037793002
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
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/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Benchmark.h"
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#include "SkDeferredCanvas.h"
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#include "SkDevice.h"
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#include "SkImage.h"
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#include "SkSurface.h"
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#if SK_SUPPORT_GPU
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#include "GrRenderTarget.h"
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#endif
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class DeferredSurfaceCopyBench : public Benchmark {
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enum {
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kSurfaceWidth = 1000,
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kSurfaceHeight = 1000,
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};
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public:
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DeferredSurfaceCopyBench(bool discardableContents) {
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fDiscardableContents = discardableContents;
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}
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protected:
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const char* onGetName() override {
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return fDiscardableContents ? "DeferredSurfaceCopy_discardable" :
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"DeferredSurfaceCopy_nonDiscardable";
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}
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void onDraw(const int loops, SkCanvas* canvas) override {
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// The canvas is not actually used for this test except to provide
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// configuration information: gpu, multisampling, size, etc?
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SkImageInfo info = SkImageInfo::MakeN32Premul(kSurfaceWidth, kSurfaceHeight);
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const SkRect fullCanvasRect = SkRect::MakeWH(
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SkIntToScalar(kSurfaceWidth), SkIntToScalar(kSurfaceHeight));
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SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
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// newSurface() can return NULL for several reasons, so we need to check
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if (NULL == surface.get()) {
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SkDebugf("DeferredSurfaceCopyBench newSurface failed, bench results are meaningless\n");
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return; // should we signal the caller that we hit an error?
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}
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SkAutoTUnref<SkDeferredCanvas> drawingCanvas(SkDeferredCanvas::Create(surface));
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for (int iteration = 0; iteration < loops; iteration++) {
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drawingCanvas->clear(0);
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SkAutoTUnref<SkImage> image(drawingCanvas->newImageSnapshot());
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SkPaint paint;
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if (!fDiscardableContents) {
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// If paint is not opaque, prior canvas contents are
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// not discardable because they are needed for compositing.
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paint.setAlpha(127);
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}
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drawingCanvas->drawRect(fullCanvasRect, paint);
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// Trigger copy on write, which should be faster in the discardable case.
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drawingCanvas->flush();
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}
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}
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private:
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bool fDiscardableContents;
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typedef Benchmark INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_BENCH( return new DeferredSurfaceCopyBench(false); )
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DEF_BENCH( return new DeferredSurfaceCopyBench(true); )
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