bsalomon@google.com | d58a1cd | 2011-11-10 20:57:43 +0000 | [diff] [blame] | 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 | |
| 9 | #include "Test.h" |
| 10 | #include "SkCanvas.h" |
| 11 | #include "SkRegion.h" |
| 12 | #include "SkGpuDevice.h" |
| 13 | |
| 14 | static const int DEV_W = 100, DEV_H = 100; |
| 15 | static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H); |
| 16 | static const SkRect DEV_RECT_S = SkRect::MakeWH(DEV_W * SK_Scalar1, |
| 17 | DEV_H * SK_Scalar1); |
| 18 | static const U8CPU DEV_PAD = 0xee; |
| 19 | |
| 20 | namespace { |
| 21 | SkPMColor getCanvasColor(int x, int y) { |
| 22 | SkASSERT(x >= 0 && x < DEV_W); |
| 23 | SkASSERT(y >= 0 && y < DEV_H); |
| 24 | |
| 25 | U8CPU r = x; |
| 26 | U8CPU g = y; |
| 27 | U8CPU b = 0xc; |
| 28 | |
| 29 | U8CPU a = 0xff; |
| 30 | switch ((x+y) % 5) { |
| 31 | case 0: |
| 32 | a = 0xff; |
| 33 | break; |
| 34 | case 1: |
| 35 | a = 0x80; |
| 36 | break; |
| 37 | case 2: |
| 38 | a = 0xCC; |
| 39 | break; |
| 40 | case 4: |
| 41 | a = 0x01; |
| 42 | break; |
| 43 | case 3: |
| 44 | a = 0x00; |
| 45 | break; |
| 46 | } |
| 47 | return SkPremultiplyARGBInline(a, r, g, b); |
| 48 | } |
| 49 | |
| 50 | bool config8888IsPremul(SkCanvas::Config8888 config8888) { |
| 51 | switch (config8888) { |
| 52 | case SkCanvas::kNative_Premul_Config8888: |
| 53 | case SkCanvas::kBGRA_Premul_Config8888: |
| 54 | case SkCanvas::kRGBA_Premul_Config8888: |
| 55 | return true; |
| 56 | case SkCanvas::kNative_Unpremul_Config8888: |
| 57 | case SkCanvas::kBGRA_Unpremul_Config8888: |
| 58 | case SkCanvas::kRGBA_Unpremul_Config8888: |
| 59 | return false; |
| 60 | default: |
| 61 | SkASSERT(0); |
| 62 | return false; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | // assumes any premu/.unpremul has been applied |
| 67 | uint32_t packConfig8888(SkCanvas::Config8888 config8888, |
| 68 | U8CPU a, U8CPU r, U8CPU g, U8CPU b) { |
| 69 | uint32_t r32; |
| 70 | uint8_t* result = reinterpret_cast<uint8_t*>(&r32); |
| 71 | switch (config8888) { |
| 72 | case SkCanvas::kNative_Premul_Config8888: |
| 73 | case SkCanvas::kNative_Unpremul_Config8888: |
| 74 | r32 = SkPackARGB32NoCheck(a, r, g, b); |
| 75 | break; |
| 76 | case SkCanvas::kBGRA_Premul_Config8888: |
| 77 | case SkCanvas::kBGRA_Unpremul_Config8888: |
| 78 | result[0] = b; |
| 79 | result[1] = g; |
| 80 | result[2] = r; |
| 81 | result[3] = a; |
| 82 | break; |
| 83 | case SkCanvas::kRGBA_Premul_Config8888: |
| 84 | case SkCanvas::kRGBA_Unpremul_Config8888: |
| 85 | result[0] = r; |
| 86 | result[1] = g; |
| 87 | result[2] = b; |
| 88 | result[3] = a; |
| 89 | break; |
| 90 | default: |
| 91 | SkASSERT(0); |
| 92 | return 0; |
| 93 | } |
| 94 | return r32; |
| 95 | } |
| 96 | |
| 97 | uint32_t getBitmapColor(int x, int y, int w, int h, SkCanvas::Config8888 config8888) { |
| 98 | int n = y * w + x; |
| 99 | U8CPU b = n & 0xff; |
| 100 | U8CPU g = (n >> 8) & 0xff; |
| 101 | U8CPU r = (n >> 16) & 0xff; |
| 102 | U8CPU a; |
| 103 | switch ((x+y) % 5) { |
| 104 | case 4: |
| 105 | a = 0xff; |
| 106 | break; |
| 107 | case 3: |
| 108 | a = 0x80; |
| 109 | break; |
| 110 | case 2: |
| 111 | a = 0xCC; |
| 112 | break; |
| 113 | case 1: |
| 114 | a = 0x01; |
| 115 | break; |
| 116 | case 0: |
| 117 | a = 0x00; |
| 118 | break; |
| 119 | } |
| 120 | if (config8888IsPremul(config8888)) { |
| 121 | r = SkMulDiv255Ceiling(r, a); |
| 122 | g = SkMulDiv255Ceiling(g, a); |
| 123 | b = SkMulDiv255Ceiling(b, a); |
| 124 | } |
| 125 | return packConfig8888(config8888, a, r, g , b); |
| 126 | } |
| 127 | |
| 128 | void fillCanvas(SkCanvas* canvas) { |
| 129 | static SkBitmap bmp; |
| 130 | if (bmp.isNull()) { |
| 131 | bmp.setConfig(SkBitmap::kARGB_8888_Config, DEV_W, DEV_H); |
| 132 | bool alloc = bmp.allocPixels(); |
| 133 | SkASSERT(alloc); |
| 134 | SkAutoLockPixels alp(bmp); |
| 135 | intptr_t pixels = reinterpret_cast<intptr_t>(bmp.getPixels()); |
| 136 | for (int y = 0; y < DEV_H; ++y) { |
| 137 | for (int x = 0; x < DEV_W; ++x) { |
| 138 | SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bmp.rowBytes() + x * bmp.bytesPerPixel()); |
| 139 | *pixel = getCanvasColor(x, y); |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | canvas->save(); |
| 144 | canvas->setMatrix(SkMatrix::I()); |
| 145 | canvas->clipRect(DEV_RECT_S, SkRegion::kReplace_Op); |
| 146 | SkPaint paint; |
| 147 | paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| 148 | canvas->drawBitmap(bmp, 0, 0, &paint); |
| 149 | canvas->restore(); |
| 150 | } |
| 151 | |
| 152 | SkPMColor convertConfig8888ToPMColor(SkCanvas::Config8888 config8888, |
| 153 | uint32_t color, |
| 154 | bool* premul) { |
| 155 | const uint8_t* c = reinterpret_cast<uint8_t*>(&color); |
| 156 | U8CPU a,r,g,b; |
| 157 | *premul = false; |
| 158 | switch (config8888) { |
| 159 | case SkCanvas::kNative_Premul_Config8888: |
| 160 | return color; |
| 161 | case SkCanvas::kNative_Unpremul_Config8888: |
| 162 | *premul = true; |
| 163 | a = SkGetPackedA32(color); |
| 164 | r = SkGetPackedR32(color); |
| 165 | g = SkGetPackedG32(color); |
| 166 | b = SkGetPackedB32(color); |
| 167 | break; |
| 168 | case SkCanvas::kBGRA_Unpremul_Config8888: |
| 169 | *premul = true; // fallthru |
| 170 | case SkCanvas::kBGRA_Premul_Config8888: |
| 171 | a = static_cast<U8CPU>(c[3]); |
| 172 | r = static_cast<U8CPU>(c[2]); |
| 173 | g = static_cast<U8CPU>(c[1]); |
| 174 | b = static_cast<U8CPU>(c[0]); |
| 175 | break; |
| 176 | case SkCanvas::kRGBA_Unpremul_Config8888: |
| 177 | *premul = true; // fallthru |
| 178 | case SkCanvas::kRGBA_Premul_Config8888: |
| 179 | a = static_cast<U8CPU>(c[3]); |
| 180 | r = static_cast<U8CPU>(c[0]); |
| 181 | g = static_cast<U8CPU>(c[1]); |
| 182 | b = static_cast<U8CPU>(c[2]); |
| 183 | break; |
| 184 | default: |
| 185 | GrCrash("Unexpected Config8888"); |
| 186 | } |
| 187 | if (*premul) { |
| 188 | r = SkMulDiv255Ceiling(r, a); |
| 189 | g = SkMulDiv255Ceiling(g, a); |
| 190 | b = SkMulDiv255Ceiling(b, a); |
| 191 | } |
| 192 | return SkPackARGB32(a, r, g, b); |
| 193 | } |
| 194 | |
| 195 | bool checkPixel(SkPMColor a, SkPMColor b, bool didPremulConversion) { |
| 196 | if (!didPremulConversion) { |
| 197 | return a == b; |
| 198 | } |
| 199 | int32_t aA = static_cast<int32_t>(SkGetPackedA32(a)); |
| 200 | int32_t aR = static_cast<int32_t>(SkGetPackedR32(a)); |
| 201 | int32_t aG = static_cast<int32_t>(SkGetPackedG32(a)); |
| 202 | int32_t aB = SkGetPackedB32(a); |
| 203 | |
| 204 | int32_t bA = static_cast<int32_t>(SkGetPackedA32(b)); |
| 205 | int32_t bR = static_cast<int32_t>(SkGetPackedR32(b)); |
| 206 | int32_t bG = static_cast<int32_t>(SkGetPackedG32(b)); |
| 207 | int32_t bB = static_cast<int32_t>(SkGetPackedB32(b)); |
| 208 | |
| 209 | return aA == bA && |
| 210 | SkAbs32(aR - bR) <= 1 && |
| 211 | SkAbs32(aG - bG) <= 1 && |
| 212 | SkAbs32(aB - bB) <= 1; |
| 213 | } |
| 214 | |
| 215 | bool checkWrite(skiatest::Reporter* reporter, |
| 216 | SkCanvas* canvas, |
| 217 | const SkBitmap& bitmap, |
| 218 | int writeX, int writeY, |
| 219 | SkCanvas::Config8888 config8888) { |
| 220 | SkDevice* dev = canvas->getDevice(); |
| 221 | if (!dev) { |
| 222 | return false; |
| 223 | } |
| 224 | SkBitmap devBmp = dev->accessBitmap(false); |
| 225 | if (devBmp.width() != DEV_W || |
| 226 | devBmp.height() != DEV_H || |
| 227 | devBmp.config() != SkBitmap::kARGB_8888_Config || |
| 228 | devBmp.isNull()) { |
| 229 | return false; |
| 230 | } |
| 231 | SkAutoLockPixels alp(devBmp); |
| 232 | |
| 233 | intptr_t canvasPixels = reinterpret_cast<intptr_t>(devBmp.getPixels()); |
| 234 | size_t canvasRowBytes = devBmp.rowBytes(); |
| 235 | SkIRect writeRect = SkIRect::MakeXYWH(writeX, writeY, bitmap.width(), bitmap.height()); |
| 236 | bool success = true; |
| 237 | for (int cy = 0; cy < DEV_H; ++cy) { |
| 238 | const SkPMColor* canvasRow = reinterpret_cast<const SkPMColor*>(canvasPixels); |
| 239 | for (int cx = 0; cx < DEV_W; ++cx) { |
| 240 | SkPMColor canvasPixel = canvasRow[cx]; |
| 241 | if (writeRect.contains(cx, cy)) { |
| 242 | int bx = cx - writeX; |
| 243 | int by = cy - writeY; |
| 244 | uint32_t bmpColor8888 = getBitmapColor(bx, by, bitmap.width(), bitmap.height(), config8888); |
| 245 | bool mul; |
| 246 | SkPMColor bmpPMColor = convertConfig8888ToPMColor(config8888, bmpColor8888, &mul); |
| 247 | bool check; |
| 248 | // do we need fuzzy test? |
| 249 | REPORTER_ASSERT(reporter, check = checkPixel(bmpPMColor, canvasPixel, mul)); |
| 250 | if (!check) { |
| 251 | success = false; |
| 252 | } |
| 253 | } else { |
| 254 | bool check; |
| 255 | SkPMColor testColor = getCanvasColor(cx, cy); |
| 256 | REPORTER_ASSERT(reporter, check = (canvasPixel == testColor)); |
| 257 | if (!check) { |
| 258 | success = false; |
| 259 | } |
| 260 | } |
| 261 | } |
| 262 | if (cy != DEV_H -1) { |
| 263 | const char* pad = reinterpret_cast<const char*>(canvasPixels + 4 * DEV_W); |
| 264 | for (size_t px = 0; px < canvasRowBytes - 4 * DEV_W; ++px) { |
| 265 | bool check; |
| 266 | REPORTER_ASSERT(reporter, check = (pad[px] == static_cast<char>(DEV_PAD))); |
| 267 | if (!check) { |
| 268 | success = false; |
| 269 | } |
| 270 | } |
| 271 | } |
| 272 | canvasPixels += canvasRowBytes; |
| 273 | } |
| 274 | |
| 275 | return success; |
| 276 | } |
| 277 | |
| 278 | enum DevType { |
| 279 | kRaster_DevType, |
| 280 | kGpu_DevType, |
| 281 | }; |
| 282 | |
| 283 | struct CanvasConfig { |
| 284 | DevType fDevType; |
| 285 | bool fTightRowBytes; |
| 286 | }; |
| 287 | |
| 288 | static const CanvasConfig gCanvasConfigs[] = { |
| 289 | {kRaster_DevType, true}, |
| 290 | {kRaster_DevType, false}, |
bsalomon@google.com | bbce8b2 | 2011-11-10 21:20:37 +0000 | [diff] [blame^] | 291 | #ifdef SK_SCALAR_IS_FLOAT |
bsalomon@google.com | d58a1cd | 2011-11-10 20:57:43 +0000 | [diff] [blame] | 292 | {kGpu_DevType, true}, // row bytes has no meaning on gpu devices |
bsalomon@google.com | bbce8b2 | 2011-11-10 21:20:37 +0000 | [diff] [blame^] | 293 | #endif |
bsalomon@google.com | d58a1cd | 2011-11-10 20:57:43 +0000 | [diff] [blame] | 294 | }; |
| 295 | |
| 296 | bool setupCanvas(SkCanvas* canvas, const CanvasConfig& c, GrContext* grCtx) { |
| 297 | switch (c.fDevType) { |
| 298 | case kRaster_DevType: { |
| 299 | SkBitmap bmp; |
| 300 | size_t rowBytes = c.fTightRowBytes ? 0 : 4 * DEV_W + 100; |
| 301 | bmp.setConfig(SkBitmap::kARGB_8888_Config, DEV_W, DEV_H, rowBytes); |
| 302 | if (!bmp.allocPixels()) { |
| 303 | return false; |
| 304 | } |
| 305 | // if rowBytes isn't tight then set the padding to a known value |
| 306 | if (rowBytes) { |
| 307 | SkAutoLockPixels alp(bmp); |
| 308 | memset(bmp.getPixels(), DEV_PAD, bmp.getSafeSize()); |
| 309 | } |
| 310 | canvas->setDevice(new SkDevice(bmp))->unref(); |
| 311 | } break; |
| 312 | case kGpu_DevType: |
| 313 | canvas->setDevice(new SkGpuDevice(grCtx, |
| 314 | SkBitmap::kARGB_8888_Config, |
| 315 | DEV_W, DEV_H))->unref(); |
| 316 | break; |
| 317 | } |
| 318 | return true; |
| 319 | } |
| 320 | |
| 321 | bool setupBitmap(SkBitmap* bitmap, |
| 322 | SkCanvas::Config8888 config8888, |
| 323 | int w, int h, |
| 324 | bool tightRowBytes) { |
| 325 | size_t rowBytes = tightRowBytes ? 0 : 4 * w + 60; |
| 326 | bitmap->setConfig(SkBitmap::kARGB_8888_Config, w, h, rowBytes); |
| 327 | if (!bitmap->allocPixels()) { |
| 328 | return false; |
| 329 | } |
| 330 | SkAutoLockPixels alp(*bitmap); |
| 331 | intptr_t pixels = reinterpret_cast<intptr_t>(bitmap->getPixels()); |
| 332 | for (int y = 0; y < h; ++y) { |
| 333 | for (int x = 0; x < w; ++x) { |
| 334 | uint32_t* pixel = reinterpret_cast<uint32_t*>(pixels + y * bitmap->rowBytes() + x * 4); |
| 335 | *pixel = getBitmapColor(x, y, w, h, config8888); |
| 336 | } |
| 337 | } |
| 338 | return true; |
| 339 | } |
| 340 | |
| 341 | void WritePixelsTest(skiatest::Reporter* reporter, GrContext* context) { |
| 342 | SkCanvas canvas; |
| 343 | |
| 344 | const SkIRect testRects[] = { |
| 345 | // entire thing |
| 346 | DEV_RECT, |
| 347 | // larger on all sides |
| 348 | SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H + 10), |
| 349 | // fully contained |
| 350 | SkIRect::MakeLTRB(DEV_W / 4, DEV_H / 4, 3 * DEV_W / 4, 3 * DEV_H / 4), |
| 351 | // outside top left |
| 352 | SkIRect::MakeLTRB(-10, -10, -1, -1), |
| 353 | // touching top left corner |
| 354 | SkIRect::MakeLTRB(-10, -10, 0, 0), |
| 355 | // overlapping top left corner |
| 356 | SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H / 4), |
| 357 | // overlapping top left and top right corners |
| 358 | SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H / 4), |
| 359 | // touching entire top edge |
| 360 | SkIRect::MakeLTRB(-10, -10, DEV_W + 10, 0), |
| 361 | // overlapping top right corner |
| 362 | SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H / 4), |
| 363 | // contained in x, overlapping top edge |
| 364 | SkIRect::MakeLTRB(DEV_W / 4, -10, 3 * DEV_W / 4, DEV_H / 4), |
| 365 | // outside top right corner |
| 366 | SkIRect::MakeLTRB(DEV_W + 1, -10, DEV_W + 10, -1), |
| 367 | // touching top right corner |
| 368 | SkIRect::MakeLTRB(DEV_W, -10, DEV_W + 10, 0), |
| 369 | // overlapping top left and bottom left corners |
| 370 | SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H + 10), |
| 371 | // touching entire left edge |
| 372 | SkIRect::MakeLTRB(-10, -10, 0, DEV_H + 10), |
| 373 | // overlapping bottom left corner |
| 374 | SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W / 4, DEV_H + 10), |
| 375 | // contained in y, overlapping left edge |
| 376 | SkIRect::MakeLTRB(-10, DEV_H / 4, DEV_W / 4, 3 * DEV_H / 4), |
| 377 | // outside bottom left corner |
| 378 | SkIRect::MakeLTRB(-10, DEV_H + 1, -1, DEV_H + 10), |
| 379 | // touching bottom left corner |
| 380 | SkIRect::MakeLTRB(-10, DEV_H, 0, DEV_H + 10), |
| 381 | // overlapping bottom left and bottom right corners |
| 382 | SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), |
| 383 | // touching entire left edge |
| 384 | SkIRect::MakeLTRB(0, DEV_H, DEV_W, DEV_H + 10), |
| 385 | // overlapping bottom right corner |
| 386 | SkIRect::MakeLTRB(3 * DEV_W / 4, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), |
| 387 | // overlapping top right and bottom right corners |
| 388 | SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H + 10), |
| 389 | }; |
| 390 | |
| 391 | for (size_t i = 0; i < SK_ARRAY_COUNT(gCanvasConfigs); ++i) { |
| 392 | REPORTER_ASSERT(reporter, setupCanvas(&canvas, gCanvasConfigs[i], context)); |
| 393 | |
| 394 | static const SkCanvas::Config8888 gReadConfigs[] = { |
| 395 | SkCanvas::kNative_Premul_Config8888, |
| 396 | SkCanvas::kNative_Unpremul_Config8888, |
| 397 | SkCanvas::kBGRA_Premul_Config8888, |
| 398 | SkCanvas::kBGRA_Unpremul_Config8888, |
| 399 | SkCanvas::kRGBA_Premul_Config8888, |
| 400 | SkCanvas::kRGBA_Unpremul_Config8888, |
| 401 | }; |
| 402 | for (int r = 0; r < SK_ARRAY_COUNT(testRects); ++r) { |
| 403 | const SkIRect& rect = testRects[r]; |
| 404 | for (int tightBmp = 0; tightBmp < 2; ++tightBmp) { |
| 405 | for (int c = 0; c < SK_ARRAY_COUNT(gReadConfigs); ++c) { |
| 406 | fillCanvas(&canvas); |
| 407 | SkCanvas::Config8888 config8888 = gReadConfigs[c]; |
| 408 | SkBitmap bmp; |
| 409 | REPORTER_ASSERT(reporter, setupBitmap(&bmp, config8888, rect.width(), rect.height(), SkToBool(tightBmp))); |
| 410 | canvas.writePixels(bmp, rect.fLeft, rect.fTop, config8888); |
| 411 | REPORTER_ASSERT(reporter, checkWrite(reporter, &canvas, bmp, rect.fLeft, rect.fTop, config8888)); |
| 412 | } |
| 413 | } |
| 414 | } |
| 415 | } |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | #include "TestClassDef.h" |
| 420 | DEFINE_GPUTESTCLASS("WritePixels", WritePixelsTestClass, WritePixelsTest) |
| 421 | |