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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 #include "SkBenchmark.h" |
| 10 #include "SkCanvas.h" |
| 11 #include "SkConfig8888.h" |
| 12 #include "SkString.h" |
| 13 |
| 14 class PremulAndUnpremulAlphaOpsBench : public SkBenchmark { |
| 15 public: |
| 16 PremulAndUnpremulAlphaOpsBench(void* param, SkCanvas::Config8888 config) |
| 17 : INHERITED(param) { |
| 18 fUnPremulConfig = config; |
| 19 fName.printf("premul_and_unpremul_alpha_%s", |
| 20 (config == SkCanvas::kRGBA_Unpremul_Config8888) ? |
| 21 "RGBA8888" : "Native8888"); |
| 22 } |
| 23 |
| 24 protected: |
| 25 virtual const char* onGetName() SK_OVERRIDE { |
| 26 return fName.c_str(); |
| 27 } |
| 28 |
| 29 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 30 canvas->clear(SK_ColorBLACK); |
| 31 SkISize size = canvas->getDeviceSize(); |
| 32 |
| 33 SkBitmap bmp1; |
| 34 bmp1.setConfig(SkBitmap::kARGB_8888_Config, size.width(), |
| 35 size.height()); |
| 36 bmp1.allocPixels(); |
| 37 SkAutoLockPixels alp(bmp1); |
| 38 uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp1.getPixels()); |
| 39 for (int h = 0; h < size.height(); ++h) { |
| 40 for (int w = 0; w < size.width(); ++w) |
| 41 pixels[h * size.width() + w] = SkPackConfig8888(fUnPremulConfig, |
| 42 h & 0xFF, w & 0xFF, w & 0xFF, w & 0xFF); |
| 43 } |
| 44 |
| 45 SkBitmap bmp2; |
| 46 bmp2.setConfig(SkBitmap::kARGB_8888_Config, size.width(), |
| 47 size.height()); |
| 48 |
| 49 static const int kLoopCount = SkBENCHLOOP(10); |
| 50 for (int loop = 0; loop < kLoopCount; ++loop) { |
| 51 // Unpremul -> Premul |
| 52 canvas->writePixels(bmp1, 0, 0, fUnPremulConfig); |
| 53 // Premul -> Unpremul |
| 54 canvas->readPixels(&bmp2, 0, 0, fUnPremulConfig); |
| 55 } |
| 56 } |
| 57 |
| 58 private: |
| 59 SkCanvas::Config8888 fUnPremulConfig; |
| 60 SkString fName; |
| 61 typedef SkBenchmark INHERITED; |
| 62 }; |
| 63 |
| 64 static SkBenchmark* fact0(void* p) { |
| 65 return new PremulAndUnpremulAlphaOpsBench(p, |
| 66 SkCanvas::kRGBA_Unpremul_Config8888); |
| 67 } |
| 68 static SkBenchmark* fact1(void* p) { |
| 69 return new PremulAndUnpremulAlphaOpsBench(p, |
| 70 SkCanvas::kNative_Unpremul_Config8888); |
| 71 } |
| 72 |
| 73 static BenchRegistry gReg0(fact0); |
| 74 static BenchRegistry gReg1(fact1); |
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