ImageBench.cpp 2.0 KB

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  1. /*
  2. * Copyright 2015 Google Inc.
  3. *
  4. * Use of this source code is governed by a BSD-style license that can be
  5. * found in the LICENSE file.
  6. */
  7. #include "bench/Benchmark.h"
  8. #include "include/core/SkCanvas.h"
  9. #include "include/core/SkImage.h"
  10. #include "include/core/SkSurface.h"
  11. class Image2RasterBench : public Benchmark {
  12. public:
  13. Image2RasterBench() {
  14. fName.set("native_image_to_raster_surface");
  15. }
  16. bool isSuitableFor(Backend backend) override {
  17. return kGPU_Backend == backend || kRaster_Backend == backend;
  18. }
  19. protected:
  20. const char* onGetName() override {
  21. return fName.c_str();
  22. }
  23. // We explicitly want to bench drawing a Image [cpu or gpu backed] into a raster target,
  24. // to ensure that we can cache the read-back in the case of gpu -> raster
  25. //
  26. void onPerCanvasPreDraw(SkCanvas* canvas) override {
  27. // create an Image reflecting the canvas (gpu or cpu)
  28. SkImageInfo info = canvas->imageInfo().makeWH(100, 100);
  29. auto surface(canvas->makeSurface(info));
  30. canvas->drawColor(SK_ColorRED);
  31. fImage = surface->makeImageSnapshot();
  32. // create a cpu-backed Surface
  33. SkImageInfo n32Info = SkImageInfo::MakeN32Premul(100, 100);
  34. fRasterSurface = SkSurface::MakeRaster(n32Info);
  35. }
  36. void onPerCanvasPostDraw(SkCanvas*) override {
  37. // Release the image and raster surface here to prevent out of order destruction
  38. // between these and the gpu interface.
  39. fRasterSurface.reset(nullptr);
  40. fImage.reset(nullptr);
  41. }
  42. void onDraw(int loops, SkCanvas*) override {
  43. for (int i = 0; i < loops; i++) {
  44. for (int inner = 0; inner < 10; ++inner) {
  45. fRasterSurface->getCanvas()->drawImage(fImage.get(), 0, 0);
  46. }
  47. }
  48. }
  49. private:
  50. SkString fName;
  51. sk_sp<SkImage> fImage;
  52. sk_sp<SkSurface> fRasterSurface;
  53. typedef Benchmark INHERITED;
  54. };
  55. DEF_BENCH( return new Image2RasterBench; )