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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkBenchmark.h" | 8 #include "SkBenchmark.h" |
9 #include "SkCanvas.h" | 9 #include "SkCanvas.h" |
10 #include "SkConfig8888.h" | 10 #include "SkConfig8888.h" |
11 #include "SkString.h" | 11 #include "SkString.h" |
12 #include "sk_tool_utils.h" | 12 #include "sk_tool_utils.h" |
13 | 13 |
14 class PremulAndUnpremulAlphaOpsBench : public SkBenchmark { | 14 class PremulAndUnpremulAlphaOpsBench : public SkBenchmark { |
15 enum { | |
16 W = 256, | |
17 H = 256, | |
18 }; | |
19 SkBitmap fBmp1, fBmp2; | |
20 | |
15 public: | 21 public: |
16 PremulAndUnpremulAlphaOpsBench(SkCanvas::Config8888 config) { | 22 PremulAndUnpremulAlphaOpsBench(SkColorType ct) { |
17 fUnPremulConfig = config; | 23 fColorType = ct; |
18 fName.printf("premul_and_unpremul_alpha_%s", | 24 fName.printf("premul_and_unpremul_alpha_%s", sk_tool_utils::colortype_na me(ct)); |
19 (config == SkCanvas::kRGBA_Unpremul_Config8888) ? | |
20 "RGBA8888" : "Native8888"); | |
21 } | 25 } |
22 | 26 |
23 protected: | 27 protected: |
24 virtual const char* onGetName() SK_OVERRIDE { | 28 virtual const char* onGetName() SK_OVERRIDE { |
25 return fName.c_str(); | 29 return fName.c_str(); |
26 } | 30 } |
27 | 31 |
32 virtual void onPreDraw() { | |
33 SkImageInfo info = SkImageInfo::Make(W, H, fColorType, kPremul_SkAlphaTy pe); | |
34 fBmp1.allocPixels(info); // used in writePixels | |
35 | |
36 for (int h = 0; h < H; ++h) { | |
37 for (int w = 0; w < W; ++w) { | |
38 // SkColor places A in the right slot for either RGBA or BGRA | |
39 *fBmp1.getAddr32(w, h) = SkColorSetARGB(h & 0xFF, w & 0xFF, w & 0xFF, w & 0xFF); | |
scroggo
2014/07/11 15:21:25
Can't this result in an invalid premultiplied colo
bsalomon
2014/07/11 15:30:39
Yeah, I think the intention was for bmp1 to be unp
| |
40 } | |
41 } | |
42 | |
43 fBmp2.allocPixels(info); // used in readPixels() | |
44 } | |
45 | |
28 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE { | 46 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE { |
29 canvas->clear(SK_ColorBLACK); | 47 canvas->clear(SK_ColorBLACK); |
30 SkISize size = canvas->getDeviceSize(); | |
31 | |
32 SkBitmap bmp1; | |
33 bmp1.setConfig(SkBitmap::kARGB_8888_Config, size.width(), | |
34 size.height()); | |
35 bmp1.allocPixels(); | |
36 SkAutoLockPixels alp(bmp1); | |
37 uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp1.getPixels()); | |
38 for (int h = 0; h < size.height(); ++h) { | |
39 for (int w = 0; w < size.width(); ++w) | |
40 pixels[h * size.width() + w] = SkPackConfig8888(fUnPremulConfig, | |
41 h & 0xFF, w & 0xFF, w & 0xFF, w & 0xFF); | |
42 } | |
43 | |
44 SkBitmap bmp2; | |
45 bmp2.setConfig(SkBitmap::kARGB_8888_Config, size.width(), | |
46 size.height()); | |
47 | |
48 SkColorType ct; | |
49 SkAlphaType at; | |
50 sk_tool_utils::config8888_to_imagetypes(fUnPremulConfig, &ct, &at); | |
51 if (bmp1.isOpaque()) { | |
52 at = kOpaque_SkAlphaType; | |
53 } | |
54 | 48 |
55 for (int loop = 0; loop < loops; ++loop) { | 49 for (int loop = 0; loop < loops; ++loop) { |
56 // Unpremul -> Premul | 50 // Unpremul -> Premul |
57 sk_tool_utils::write_pixels(canvas, bmp1, 0, 0, ct, at); | 51 canvas->writePixels(fBmp1.info(), fBmp1.getPixels(), fBmp1.rowBytes( ), 0, 0); |
58 // Premul -> Unpremul | 52 // Premul -> Unpremul |
59 canvas->readPixels(&bmp2, 0, 0, fUnPremulConfig); | 53 canvas->readPixels(fBmp2.info(), fBmp2.getPixels(), fBmp2.rowBytes() , 0, 0); |
60 } | 54 } |
61 } | 55 } |
62 | 56 |
63 private: | 57 private: |
64 SkCanvas::Config8888 fUnPremulConfig; | 58 SkColorType fColorType; |
65 SkString fName; | 59 SkString fName; |
60 | |
66 typedef SkBenchmark INHERITED; | 61 typedef SkBenchmark INHERITED; |
67 }; | 62 }; |
68 | 63 |
69 | 64 |
70 DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(SkCanvas::kRGBA_Unpremul_Con fig8888)); | 65 DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(kRGBA_8888_SkColorType)); |
71 DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(SkCanvas::kNative_Unpremul_C onfig8888)); | 66 DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(kBGRA_8888_SkColorType)); |
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