1 2 /* 3 * Copyright 2012 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 11 #include "GrContext.h" 12 #include "GrContextFactory.h" 13 #include "SkBitmap.h" 14 #include "SkCanvas.h" 15 #include "SkColor.h" 16 #include "SkGpuDevice.h" 17 #include "SkPaint.h" 18 #include "SkPixelRef.h" 19 #include "SkRect.h" 20 #include "Test.h" 21 22 static const char* boolStr(bool value) { 23 return value ? "true" : "false"; 24 } 25 26 // these are in the same order as the SkBitmap::Config enum 27 static const char* gConfigName[] = { 28 "None", "8888" 29 }; 30 31 struct Pair { 32 SkBitmap::Config fConfig; 33 const char* fValid; 34 }; 35 36 /** 37 * Check to ensure that copying a GPU-backed SkBitmap behaved as expected. 38 * @param reporter Used to report failures. 39 * @param desiredConfig Config being copied to. If the copy succeeded, dst must have this Config. 40 * @param success True if the copy succeeded. 41 * @param src A GPU-backed SkBitmap that had copyTo or deepCopyTo called on it. 42 * @param dst SkBitmap that was copied to. 43 * @param deepCopy True if deepCopyTo was used; false if copyTo was used. 44 */ 45 static void TestIndividualCopy(skiatest::Reporter* reporter, const SkBitmap::Config desiredConfig, 46 const bool success, const SkBitmap& src, const SkBitmap& dst, 47 const bool deepCopy = true) { 48 if (success) { 49 REPORTER_ASSERT(reporter, src.width() == dst.width()); 50 REPORTER_ASSERT(reporter, src.height() == dst.height()); 51 REPORTER_ASSERT(reporter, dst.config() == desiredConfig); 52 if (src.config() == dst.config()) { 53 // FIXME: When calling copyTo (so deepCopy is false here), sometimes we copy the pixels 54 // exactly, in which case the IDs should be the same, but sometimes we do a bitmap draw, 55 // in which case the IDs should not be the same. Is there any way to determine which is 56 // the case at this point? 57 if (deepCopy) { 58 REPORTER_ASSERT(reporter, src.getGenerationID() == dst.getGenerationID()); 59 } 60 REPORTER_ASSERT(reporter, src.pixelRef() != NULL && dst.pixelRef() != NULL); 61 62 // Do read backs and make sure that the two are the same. 63 SkBitmap srcReadBack, dstReadBack; 64 { 65 SkASSERT(src.getTexture() != NULL); 66 bool readBack = src.pixelRef()->readPixels(&srcReadBack); 67 REPORTER_ASSERT(reporter, readBack); 68 } 69 if (dst.getTexture() != NULL) { 70 bool readBack = dst.pixelRef()->readPixels(&dstReadBack); 71 REPORTER_ASSERT(reporter, readBack); 72 } else { 73 // If dst is not a texture, do a copy instead, to the same config as srcReadBack. 74 bool copy = dst.copyTo(&dstReadBack, srcReadBack.config()); 75 REPORTER_ASSERT(reporter, copy); 76 } 77 78 SkAutoLockPixels srcLock(srcReadBack); 79 SkAutoLockPixels dstLock(dstReadBack); 80 REPORTER_ASSERT(reporter, srcReadBack.readyToDraw() && dstReadBack.readyToDraw()); 81 82 const char* srcP = static_cast<const char*>(srcReadBack.getAddr(0, 0)); 83 const char* dstP = static_cast<const char*>(dstReadBack.getAddr(0, 0)); 84 REPORTER_ASSERT(reporter, srcP != dstP); 85 86 REPORTER_ASSERT(reporter, !memcmp(srcP, dstP, srcReadBack.getSize())); 87 } else { 88 REPORTER_ASSERT(reporter, src.getGenerationID() != dst.getGenerationID()); 89 } 90 } else { 91 // dst should be unchanged from its initial state 92 REPORTER_ASSERT(reporter, dst.config() == SkBitmap::kNo_Config); 93 REPORTER_ASSERT(reporter, dst.width() == 0); 94 REPORTER_ASSERT(reporter, dst.height() == 0); 95 } 96 97 } 98 99 // Stripped down version of TestBitmapCopy that checks basic fields (width, height, config, genID) 100 // to ensure that they were copied properly. 101 static void TestGpuBitmapCopy(skiatest::Reporter* reporter, GrContextFactory* factory) { 102 #ifdef SK_BUILD_FOR_ANDROID // https://code.google.com/p/skia/issues/detail?id=753 103 return; 104 #endif 105 for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) { 106 GrContextFactory::GLContextType glType = static_cast<GrContextFactory::GLContextType>(type); 107 if (!GrContextFactory::IsRenderingGLContext(glType)) { 108 continue; 109 } 110 111 GrContext* grContext = factory->get(glType); 112 if (NULL == grContext) { 113 continue; 114 } 115 116 117 if (NULL == grContext) { 118 return; 119 } 120 static const Pair gPairs[] = { 121 { SkBitmap::kNo_Config, "00" }, 122 { SkBitmap::kARGB_8888_Config, "01" }, 123 }; 124 125 const int W = 20; 126 const int H = 33; 127 128 for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) { 129 SkBitmap src, dst; 130 131 SkGpuDevice* device = SkNEW_ARGS(SkGpuDevice, (grContext, gPairs[i].fConfig, W, H)); 132 SkAutoUnref aur(device); 133 src = device->accessBitmap(false); 134 device->clear(SK_ColorWHITE); 135 136 // Draw something different to the same portion of the bitmap that we will extract as a 137 // subset, so that comparing the pixels of the subset will be meaningful. 138 SkIRect subsetRect = SkIRect::MakeLTRB(W/2, H/2, W, H); 139 SkCanvas drawingCanvas(device); 140 SkPaint paint; 141 paint.setColor(SK_ColorRED); 142 drawingCanvas.drawRect(SkRect::Make(subsetRect), paint); 143 144 // Extract a subset. If this succeeds we will test copying the subset. 145 SkBitmap subset; 146 const bool extracted = src.extractSubset(&subset, subsetRect); 147 148 for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) { 149 dst.reset(); 150 bool success = src.deepCopyTo(&dst, gPairs[j].fConfig); 151 bool expected = gPairs[i].fValid[j] != '0'; 152 if (success != expected) { 153 SkString str; 154 str.printf("SkBitmap::deepCopyTo from %s to %s. expected %s returned %s", 155 gConfigName[i], gConfigName[j], boolStr(expected), 156 boolStr(success)); 157 reporter->reportFailed(str); 158 } 159 160 bool canSucceed = src.canCopyTo(gPairs[j].fConfig); 161 if (success != canSucceed) { 162 SkString str; 163 str.printf("SkBitmap::deepCopyTo from %s to %s returned %s," 164 "but canCopyTo returned %s", 165 gConfigName[i], gConfigName[j], boolStr(success), 166 boolStr(canSucceed)); 167 reporter->reportFailed(str); 168 } 169 170 TestIndividualCopy(reporter, gPairs[j].fConfig, success, src, dst); 171 172 // Test copying the subset bitmap, using both copyTo and deepCopyTo. 173 if (extracted) { 174 SkBitmap subsetCopy; 175 success = subset.copyTo(&subsetCopy, gPairs[j].fConfig); 176 REPORTER_ASSERT(reporter, success == expected); 177 REPORTER_ASSERT(reporter, success == canSucceed); 178 TestIndividualCopy(reporter, gPairs[j].fConfig, success, subset, subsetCopy, 179 false); 180 181 // Reset the bitmap so that a failed copyTo will leave it in the expected state. 182 subsetCopy.reset(); 183 success = subset.deepCopyTo(&subsetCopy, gPairs[j].fConfig); 184 REPORTER_ASSERT(reporter, success == expected); 185 REPORTER_ASSERT(reporter, success == canSucceed); 186 TestIndividualCopy(reporter, gPairs[j].fConfig, success, subset, subsetCopy, 187 true); 188 } 189 } // for (size_t j = ... 190 } // for (size_t i = ... 191 } // GrContextFactory::GLContextType 192 } 193 194 #include "TestClassDef.h" 195 DEFINE_GPUTESTCLASS("GpuBitmapCopy", TestGpuBitmapCopyClass, TestGpuBitmapCopy) 196 197 #endif 198
