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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#if SK_SUPPORT_GPU
#include "GrRenderTarget.h"
#endif
#include "SkBenchmark.h"
#include "SkDeferredCanvas.h"
#include "SkDevice.h"
#include "SkImage.h"
#include "SkSurface.h"
class DeferredSurfaceCopyBench : public SkBenchmark {
enum {
kSurfaceWidth = 1000,
kSurfaceHeight = 1000,
};
public:
DeferredSurfaceCopyBench(bool discardableContents) {
fDiscardableContents = discardableContents;
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fDiscardableContents ? "DeferredSurfaceCopy_discardable" :
"DeferredSurfaceCopy_nonDiscardable";
}
virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
// The canvas is not actually used for this test except to provide
// configuration information: gpu, multisampling, size, etc?
SkImageInfo info;
info.fWidth = kSurfaceWidth;
info.fHeight = kSurfaceHeight;
info.fColorType = kN32_SkColorType;
info.fAlphaType = kPremul_SkAlphaType;
const SkRect fullCanvasRect = SkRect::MakeWH(
SkIntToScalar(kSurfaceWidth), SkIntToScalar(kSurfaceHeight));
SkSurface* surface;
#if SK_SUPPORT_GPU
GrRenderTarget* rt = reinterpret_cast<GrRenderTarget*>(
canvas->getDevice()->accessRenderTarget());
if (NULL != rt) {
surface = SkSurface::NewRenderTarget(rt->getContext(), info, rt->numSamples());
} else
#endif
{
surface = SkSurface::NewRaster(info);
}
SkAutoTUnref<SkDeferredCanvas> drawingCanvas(SkDeferredCanvas::Create(surface));
surface->unref();
for (int iteration = 0; iteration < loops; iteration++) {
drawingCanvas->clear(0);
SkAutoTUnref<SkImage> image(drawingCanvas->newImageSnapshot());
SkPaint paint;
if (!fDiscardableContents) {
// If paint is not opaque, prior canvas contents are
// not discardable because they are needed for compositing.
paint.setAlpha(127);
}
drawingCanvas->drawRect(fullCanvasRect, paint);
// Trigger copy on write, which should be faster in the discardable case.
drawingCanvas->flush();
}
}
private:
bool fDiscardableContents;
typedef SkBenchmark INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_BENCH( return new DeferredSurfaceCopyBench(false); )
DEF_BENCH( return new DeferredSurfaceCopyBench(true); )
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