1 2 /* 3 * Copyright 2011 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 #include "Test.h" 9 #include "SkBitmap.h" 10 #include "SkCanvas.h" 11 #include "SkColorPriv.h" 12 #include "SkGradientShader.h" 13 #include "SkRect.h" 14 15 static inline const char* boolStr(bool value) { 16 return value ? "true" : "false"; 17 } 18 19 // these are in the same order as the SkBitmap::Config enum 20 static const char* gConfigName[] = { 21 "None", "A1", "A8", "Index8", "565", "4444", "8888", "RLE_Index8" 22 }; 23 24 /** Returns -1 on success, else the x coord of the first bad pixel, return its 25 value in bad 26 */ 27 typedef int (*Proc)(const void*, int width, uint32_t expected, uint32_t* bad); 28 29 static int proc_32(const void* ptr, int w, uint32_t expected, uint32_t* bad) { 30 const SkPMColor* addr = static_cast<const SkPMColor*>(ptr); 31 for (int x = 0; x < w; x++) { 32 if (addr[x] != expected) { 33 *bad = addr[x]; 34 return x; 35 } 36 } 37 return -1; 38 } 39 40 static int proc_16(const void* ptr, int w, uint32_t expected, uint32_t* bad) { 41 const uint16_t* addr = static_cast<const uint16_t*>(ptr); 42 for (int x = 0; x < w; x++) { 43 if (addr[x] != expected) { 44 *bad = addr[x]; 45 return x; 46 } 47 } 48 return -1; 49 } 50 51 static int proc_8(const void* ptr, int w, uint32_t expected, uint32_t* bad) { 52 const SkPMColor* addr = static_cast<const SkPMColor*>(ptr); 53 for (int x = 0; x < w; x++) { 54 if (SkGetPackedA32(addr[x]) != expected) { 55 *bad = SkGetPackedA32(addr[x]); 56 return x; 57 } 58 } 59 return -1; 60 } 61 62 static int proc_bad(const void* ptr, int, uint32_t, uint32_t* bad) { 63 *bad = 0; 64 return 0; 65 } 66 67 static Proc find_proc(const SkBitmap& bm, SkPMColor expect32, uint16_t expect16, 68 uint8_t expect8, uint32_t* expect) { 69 switch (bm.config()) { 70 case SkBitmap::kARGB_8888_Config: 71 *expect = expect32; 72 return proc_32; 73 case SkBitmap::kARGB_4444_Config: 74 case SkBitmap::kRGB_565_Config: 75 *expect = expect16; 76 return proc_16; 77 case SkBitmap::kA8_Config: 78 *expect = expect8; 79 return proc_8; 80 default: 81 *expect = 0; 82 return proc_bad; 83 } 84 } 85 86 static bool check_color(const SkBitmap& bm, SkPMColor expect32, 87 uint16_t expect16, uint8_t expect8, 88 skiatest::Reporter* reporter) { 89 uint32_t expect; 90 Proc proc = find_proc(bm, expect32, expect16, expect8, &expect); 91 for (int y = 0; y < bm.height(); y++) { 92 uint32_t bad; 93 int x = proc(bm.getAddr(0, y), bm.width(), expect, &bad); 94 if (x >= 0) { 95 SkString str; 96 str.printf("BlitRow config=%s [%d %d] expected %x got %x", 97 gConfigName[bm.config()], x, y, expect, bad); 98 reporter->reportFailed(str); 99 return false; 100 } 101 } 102 return true; 103 } 104 105 // Make sure our blits always map src==0 to a noop, and src==FF to full opaque 106 static void test_00_FF(skiatest::Reporter* reporter) { 107 static const int W = 256; 108 109 static const SkBitmap::Config gDstConfig[] = { 110 SkBitmap::kARGB_8888_Config, 111 SkBitmap::kRGB_565_Config, 112 // SkBitmap::kARGB_4444_Config, 113 // SkBitmap::kA8_Config, 114 }; 115 116 static const struct { 117 SkColor fSrc; 118 SkColor fDst; 119 SkPMColor fResult32; 120 uint16_t fResult16; 121 uint8_t fResult8; 122 } gSrcRec[] = { 123 { 0, 0, 0, 0, 0 }, 124 { 0, 0xFFFFFFFF, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF }, 125 { 0xFFFFFFFF, 0, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF }, 126 { 0xFFFFFFFF, 0xFFFFFFFF, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF }, 127 }; 128 129 SkPaint paint; 130 131 SkBitmap srcBM; 132 srcBM.setConfig(SkBitmap::kARGB_8888_Config, W, 1); 133 srcBM.allocPixels(); 134 135 for (size_t i = 0; i < SK_ARRAY_COUNT(gDstConfig); i++) { 136 SkBitmap dstBM; 137 dstBM.setConfig(gDstConfig[i], W, 1); 138 dstBM.allocPixels(); 139 140 SkCanvas canvas(dstBM); 141 for (size_t j = 0; j < SK_ARRAY_COUNT(gSrcRec); j++) { 142 srcBM.eraseColor(gSrcRec[j].fSrc); 143 dstBM.eraseColor(gSrcRec[j].fDst); 144 145 for (int k = 0; k < 4; k++) { 146 bool dither = (k & 1) != 0; 147 bool blend = (k & 2) != 0; 148 if (gSrcRec[j].fSrc != 0 && blend) { 149 // can't make a numerical promise about blending anything 150 // but 0 151 // continue; 152 } 153 paint.setDither(dither); 154 paint.setAlpha(blend ? 0x80 : 0xFF); 155 canvas.drawBitmap(srcBM, 0, 0, &paint); 156 if (!check_color(dstBM, gSrcRec[j].fResult32, gSrcRec[j].fResult16, 157 gSrcRec[j].fResult8, reporter)) { 158 SkDebugf("--- src index %d dither %d blend %d\n", j, dither, blend); 159 } 160 } 161 } 162 } 163 } 164 165 /////////////////////////////////////////////////////////////////////////////// 166 167 struct Mesh { 168 SkPoint fPts[4]; 169 uint16_t fIndices[6]; 170 171 Mesh(const SkBitmap& bm, SkPaint* paint) { 172 const SkScalar w = SkIntToScalar(bm.width()); 173 const SkScalar h = SkIntToScalar(bm.height()); 174 fPts[0].set(0, 0); 175 fPts[1].set(w, 0); 176 fPts[2].set(w, h); 177 fPts[3].set(0, h); 178 SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kClamp_TileMode, 179 SkShader::kClamp_TileMode); 180 paint->setShader(s)->unref(); 181 182 } 183 184 void draw(SkCanvas* canvas, SkPaint* paint) { 185 canvas->drawVertices(SkCanvas::kTriangleFan_VertexMode, 4, fPts, fPts, 186 NULL, NULL, NULL, 0, *paint); 187 } 188 }; 189 190 #include "SkImageEncoder.h" 191 static void save_bm(const SkBitmap& bm, const char name[]) { 192 SkImageEncoder::EncodeFile(name, bm, SkImageEncoder::kPNG_Type, 100); 193 } 194 195 static bool gOnce; 196 197 // Make sure our blits are invariant with the width of the blit (i.e. that 198 // special case for 8 at a time have the same results as narrower blits) 199 static void test_diagonal(skiatest::Reporter* reporter) { 200 static const int W = 64; 201 static const int H = W; 202 203 static const SkBitmap::Config gDstConfig[] = { 204 SkBitmap::kARGB_8888_Config, 205 SkBitmap::kRGB_565_Config, 206 // SkBitmap::kARGB_4444_Config, 207 // SkBitmap::kA8_Config, 208 }; 209 210 static const SkColor gDstBG[] = { 0, 0xFFFFFFFF }; 211 212 SkPaint paint; 213 214 SkBitmap srcBM; 215 srcBM.setConfig(SkBitmap::kARGB_8888_Config, W, H); 216 srcBM.allocPixels(); 217 SkRect srcR = { 218 0, 0, SkIntToScalar(srcBM.width()), SkIntToScalar(srcBM.height()) }; 219 220 // cons up a mesh to draw the bitmap with 221 Mesh mesh(srcBM, &paint); 222 223 for (size_t i = 0; i < SK_ARRAY_COUNT(gDstConfig); i++) { 224 SkBitmap dstBM0, dstBM1; 225 dstBM0.setConfig(gDstConfig[i], W, H); 226 dstBM1.setConfig(gDstConfig[i], W, H); 227 dstBM0.allocPixels(); 228 dstBM1.allocPixels(); 229 230 SkCanvas canvas0(dstBM0); 231 SkCanvas canvas1(dstBM1); 232 SkColor bgColor; 233 234 for (size_t j = 0; j < SK_ARRAY_COUNT(gDstBG); j++) { 235 bgColor = gDstBG[j]; 236 237 for (int c = 0; c <= 0xFF; c++) { 238 srcBM.eraseARGB(0xFF, c, c, c); 239 240 for (int k = 0; k < 4; k++) { 241 bool dither = (k & 1) != 0; 242 uint8_t alpha = (k & 2) ? 0x80 : 0xFF; 243 paint.setDither(dither); 244 paint.setAlpha(alpha); 245 246 dstBM0.eraseColor(bgColor); 247 dstBM1.eraseColor(bgColor); 248 249 canvas0.drawRect(srcR, paint); 250 mesh.draw(&canvas1, &paint); 251 252 if (!gOnce && false) { 253 save_bm(dstBM0, "drawBitmap.png"); 254 save_bm(dstBM1, "drawMesh.png"); 255 gOnce = true; 256 } 257 258 if (memcmp(dstBM0.getPixels(), dstBM1.getPixels(), dstBM0.getSize())) { 259 SkString str; 260 str.printf("Diagonal config=%s bg=0x%x dither=%d alpha=0x%x src=0x%x", 261 gConfigName[gDstConfig[i]], bgColor, dither, alpha, c); 262 reporter->reportFailed(str); 263 } 264 } 265 } 266 } 267 } 268 } 269 270 static void TestBlitRow(skiatest::Reporter* reporter) { 271 test_00_FF(reporter); 272 test_diagonal(reporter); 273 } 274 275 #include "TestClassDef.h" 276 DEFINE_TESTCLASS("BlitRow", TestBlitRowClass, TestBlitRow) 277
