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| 1 |
| 2 /* |
| 3 * Copyright 2013 Google Inc. |
| 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. |
| 7 */ |
| 8 |
| 9 #if SK_SUPPORT_GPU |
| 10 #include "GrRenderTarget.h" |
| 11 #endif |
| 12 #include "SkBenchmark.h" |
| 13 #include "SkDeferredCanvas.h" |
| 14 #include "SkDevice.h" |
| 15 #include "SkImage.h" |
| 16 #include "SkSurface.h" |
| 17 |
| 18 class DeferredSurfaceCopyBench : public SkBenchmark { |
| 19 enum { |
| 20 N = SkBENCHLOOP(5), |
| 21 kSurfaceWidth = 1000, |
| 22 kSurfaceHeight = 1000, |
| 23 }; |
| 24 public: |
| 25 DeferredSurfaceCopyBench(void* param, bool discardableContents) : SkBenchmar
k(param) { |
| 26 fDiscardableContents = discardableContents; |
| 27 } |
| 28 |
| 29 protected: |
| 30 virtual const char* onGetName() SK_OVERRIDE { |
| 31 return fDiscardableContents ? "DeferredSurfaceCopy_discardable" : |
| 32 "DeferredSurfaceCopy_nonDiscardable"; |
| 33 } |
| 34 |
| 35 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 36 // The canvas is not actually used for this test except to provide |
| 37 // configuration information: gpu, multisampling, size, etc? |
| 38 SkDevice* referenceDevice = canvas->getDevice(); |
| 39 SkImage::Info info; |
| 40 info.fWidth = kSurfaceWidth; |
| 41 info.fHeight = kSurfaceHeight; |
| 42 info.fColorType = SkImage::kPMColor_ColorType; |
| 43 info.fAlphaType = SkImage::kPremul_AlphaType; |
| 44 const SkRect fullCanvasRect = SkRect::MakeWH( |
| 45 SkIntToScalar(kSurfaceWidth), SkIntToScalar(kSurfaceHeight)); |
| 46 SkSurface* surface; |
| 47 #if SK_SUPPORT_GPU |
| 48 GrRenderTarget* rt = reinterpret_cast<GrRenderTarget*>(referenceDevice->
accessRenderTarget()); |
| 49 if (NULL != rt) { |
| 50 surface = SkSurface::NewRenderTarget(rt->getContext(), info, rt->num
Samples()); |
| 51 } else |
| 52 #endif |
| 53 { |
| 54 surface = SkSurface::NewRaster(info); |
| 55 } |
| 56 SkDeferredCanvas drawingCanvas(surface); |
| 57 surface->unref(); |
| 58 |
| 59 for (int iteration = 0; iteration < N; iteration++) { |
| 60 drawingCanvas.clear(0); |
| 61 SkAutoTUnref<SkImage> image(drawingCanvas.newImageSnapshot()); |
| 62 SkPaint paint; |
| 63 if (!fDiscardableContents) { |
| 64 // If paint is not opaque, prior canvas contents are |
| 65 // not discardable because they are needed for compositing. |
| 66 paint.setAlpha(127); |
| 67 } |
| 68 drawingCanvas.drawRect(fullCanvasRect, paint); |
| 69 // Trigger copy on write, which should be faster in the discardable
case. |
| 70 drawingCanvas.flush(); |
| 71 } |
| 72 } |
| 73 |
| 74 private: |
| 75 bool fDiscardableContents; |
| 76 |
| 77 typedef SkBenchmark INHERITED; |
| 78 }; |
| 79 |
| 80 ////////////////////////////////////////////////////////////////////////////// |
| 81 |
| 82 static SkBenchmark* Fact0(void* p) { return new DeferredSurfaceCopyBench(p, fals
e); } |
| 83 static SkBenchmark* Fact1(void* p) { return new DeferredSurfaceCopyBench(p, true
); } |
| 84 |
| 85 static BenchRegistry gReg0(Fact0); |
| 86 static BenchRegistry gReg1(Fact1); |
| 87 |
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