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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 "SkBitmapDevice.h" | 8 #include "SkBitmapDevice.h" |
9 #include "SkCanvas.h" | 9 #include "SkCanvas.h" |
10 #include "SkConfig8888.h" | 10 #include "SkConfig8888.h" |
11 #include "Test.h" | 11 #include "Test.h" |
| 12 #include "sk_tool_utils.h" |
12 | 13 |
13 #if SK_SUPPORT_GPU | 14 #if SK_SUPPORT_GPU |
14 #include "GrContextFactory.h" | 15 #include "GrContextFactory.h" |
15 #include "SkGpuDevice.h" | 16 #include "SkGpuDevice.h" |
16 #endif | 17 #endif |
17 | 18 |
18 static void fillCanvas(SkCanvas* canvas, SkCanvas::Config8888 unpremulConfig) { | 19 static uint32_t pack_unpremul_rgba(SkColor c) { |
| 20 uint32_t packed; |
| 21 uint8_t* byte = reinterpret_cast<uint8_t*>(&packed); |
| 22 byte[0] = SkColorGetR(c); |
| 23 byte[1] = SkColorGetG(c); |
| 24 byte[2] = SkColorGetB(c); |
| 25 byte[3] = SkColorGetA(c); |
| 26 return packed; |
| 27 } |
| 28 |
| 29 static uint32_t pack_unpremul_bgra(SkColor c) { |
| 30 uint32_t packed; |
| 31 uint8_t* byte = reinterpret_cast<uint8_t*>(&packed); |
| 32 byte[0] = SkColorGetB(c); |
| 33 byte[1] = SkColorGetG(c); |
| 34 byte[2] = SkColorGetR(c); |
| 35 byte[3] = SkColorGetA(c); |
| 36 return packed; |
| 37 } |
| 38 |
| 39 typedef uint32_t (*PackUnpremulProc)(SkColor); |
| 40 |
| 41 const struct { |
| 42 SkColorType fColorType; |
| 43 PackUnpremulProc fPackProc; |
| 44 SkCanvas::Config8888 fConfig8888; |
| 45 } gUnpremul[] = { |
| 46 { kRGBA_8888_SkColorType, pack_unpremul_rgba, SkCanvas::kRGBA_Unpremul_Confi
g8888 }, |
| 47 { kBGRA_8888_SkColorType, pack_unpremul_bgra, SkCanvas::kBGRA_Unpremul_Confi
g8888 }, |
| 48 }; |
| 49 |
| 50 static void fillCanvas(SkCanvas* canvas, SkColorType colorType, PackUnpremulProc
proc) { |
| 51 // Don't strictly need a bitmap, but its a handy way to allocate the pixels |
19 SkBitmap bmp; | 52 SkBitmap bmp; |
20 bmp.allocN32Pixels(256, 256); | 53 bmp.allocN32Pixels(256, 256); |
21 SkAutoLockPixels alp(bmp); | |
22 uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp.getPixels()); | |
23 | 54 |
24 for (int a = 0; a < 256; ++a) { | 55 for (int a = 0; a < 256; ++a) { |
| 56 uint32_t* pixels = bmp.getAddr32(0, a); |
25 for (int r = 0; r < 256; ++r) { | 57 for (int r = 0; r < 256; ++r) { |
26 pixels[a * 256 + r] = SkPackConfig8888(unpremulConfig, a, r, 0, 0); | 58 pixels[r] = proc(SkColorSetARGB(a, r, 0, 0)); |
27 } | 59 } |
28 } | 60 } |
29 canvas->writePixels(bmp, 0, 0, unpremulConfig); | 61 |
| 62 SkImageInfo info = bmp.info(); |
| 63 info.fColorType = colorType; |
| 64 info.fAlphaType = kUnpremul_SkAlphaType; |
| 65 canvas->writePixels(info, bmp.getPixels(), bmp.rowBytes(), 0, 0); |
30 } | 66 } |
31 | 67 |
32 static const SkCanvas::Config8888 gUnpremulConfigs[] = { | |
33 SkCanvas::kNative_Unpremul_Config8888, | |
34 SkCanvas::kBGRA_Unpremul_Config8888, | |
35 SkCanvas::kRGBA_Unpremul_Config8888, | |
36 }; | |
37 | |
38 DEF_GPUTEST(PremulAlphaRoundTrip, reporter, factory) { | 68 DEF_GPUTEST(PremulAlphaRoundTrip, reporter, factory) { |
39 const SkImageInfo info = SkImageInfo::MakeN32Premul(256, 256); | 69 const SkImageInfo info = SkImageInfo::MakeN32Premul(256, 256); |
40 | 70 |
41 SkAutoTUnref<SkBaseDevice> device; | 71 SkAutoTUnref<SkBaseDevice> device; |
42 for (int dtype = 0; dtype < 2; ++dtype) { | 72 for (int dtype = 0; dtype < 2; ++dtype) { |
43 | 73 |
44 int glCtxTypeCnt = 1; | 74 int glCtxTypeCnt = 1; |
45 #if SK_SUPPORT_GPU | 75 #if SK_SUPPORT_GPU |
46 if (0 != dtype) { | 76 if (0 != dtype) { |
47 glCtxTypeCnt = GrContextFactory::kGLContextTypeCnt; | 77 glCtxTypeCnt = GrContextFactory::kGLContextTypeCnt; |
(...skipping 19 matching lines...) Expand all Loading... |
67 continue; | 97 continue; |
68 #endif | 98 #endif |
69 } | 99 } |
70 SkCanvas canvas(device); | 100 SkCanvas canvas(device); |
71 | 101 |
72 SkBitmap readBmp1; | 102 SkBitmap readBmp1; |
73 readBmp1.allocN32Pixels(256, 256); | 103 readBmp1.allocN32Pixels(256, 256); |
74 SkBitmap readBmp2; | 104 SkBitmap readBmp2; |
75 readBmp2.allocN32Pixels(256, 256); | 105 readBmp2.allocN32Pixels(256, 256); |
76 | 106 |
77 for (size_t upmaIdx = 0; | 107 for (size_t upmaIdx = 0; upmaIdx < SK_ARRAY_COUNT(gUnpremul); ++upma
Idx) { |
78 upmaIdx < SK_ARRAY_COUNT(gUnpremulConfigs); | 108 fillCanvas(&canvas, gUnpremul[upmaIdx].fColorType, gUnpremul[upm
aIdx].fPackProc); |
79 ++upmaIdx) { | 109 |
80 fillCanvas(&canvas, gUnpremulConfigs[upmaIdx]); | 110 readBmp1.eraseColor(0); |
81 { | 111 readBmp2.eraseColor(0); |
82 SkAutoLockPixels alp1(readBmp1); | |
83 SkAutoLockPixels alp2(readBmp2); | |
84 sk_bzero(readBmp1.getPixels(), readBmp1.getSafeSize()); | |
85 sk_bzero(readBmp2.getPixels(), readBmp2.getSafeSize()); | |
86 } | |
87 | 112 |
88 canvas.readPixels(&readBmp1, 0, 0, gUnpremulConfigs[upmaIdx]); | 113 canvas.readPixels(&readBmp1, 0, 0, gUnpremul[upmaIdx].fConfig888
8); |
89 canvas.writePixels(readBmp1, 0, 0, gUnpremulConfigs[upmaIdx]); | 114 sk_tool_utils::write_pixels(&canvas, readBmp1, 0, 0, gUnpremul[u
pmaIdx].fColorType, |
90 canvas.readPixels(&readBmp2, 0, 0, gUnpremulConfigs[upmaIdx]); | 115 kUnpremul_SkAlphaType); |
| 116 canvas.readPixels(&readBmp2, 0, 0, gUnpremul[upmaIdx].fConfig888
8); |
91 | 117 |
92 SkAutoLockPixels alp1(readBmp1); | |
93 SkAutoLockPixels alp2(readBmp2); | |
94 uint32_t* pixels1 = | |
95 reinterpret_cast<uint32_t*>(readBmp1.getPixels()); | |
96 uint32_t* pixels2 = | |
97 reinterpret_cast<uint32_t*>(readBmp2.getPixels()); | |
98 bool success = true; | 118 bool success = true; |
99 for (int y = 0; y < 256 && success; ++y) { | 119 for (int y = 0; y < 256 && success; ++y) { |
| 120 const uint32_t* pixels1 = readBmp1.getAddr32(0, y); |
| 121 const uint32_t* pixels2 = readBmp2.getAddr32(0, y); |
100 for (int x = 0; x < 256 && success; ++x) { | 122 for (int x = 0; x < 256 && success; ++x) { |
101 int i = y * 256 + x; | 123 REPORTER_ASSERT(reporter, success = pixels1[x] == pixels
2[x]); |
102 REPORTER_ASSERT(reporter, success = pixels1[i] == pixels
2[i]); | |
103 } | 124 } |
104 } | 125 } |
105 } | 126 } |
106 } | 127 } |
107 } | 128 } |
108 } | 129 } |
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