1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkBitmap.h"
9 #include "SkRect.h"
10 #include "SkTemplates.h"
11 #include "Test.h"
12
boolStr(bool value)13 static const char* boolStr(bool value) {
14 return value ? "true" : "false";
15 }
16
17 // these are in the same order as the SkColorType enum
18 static const char* gColorTypeName[] = {
19 "None", "A8", "565", "4444", "RGBA", "BGRA", "Index8"
20 };
21
report_opaqueness(skiatest::Reporter * reporter,const SkBitmap & src,const SkBitmap & dst)22 static void report_opaqueness(skiatest::Reporter* reporter, const SkBitmap& src,
23 const SkBitmap& dst) {
24 ERRORF(reporter, "src %s opaque:%d, dst %s opaque:%d",
25 gColorTypeName[src.colorType()], src.isOpaque(),
26 gColorTypeName[dst.colorType()], dst.isOpaque());
27 }
28
canHaveAlpha(SkColorType ct)29 static bool canHaveAlpha(SkColorType ct) {
30 return kRGB_565_SkColorType != ct;
31 }
32
33 // copyTo() should preserve isOpaque when it makes sense
test_isOpaque(skiatest::Reporter * reporter,const SkBitmap & srcOpaque,const SkBitmap & srcPremul,SkColorType dstColorType)34 static void test_isOpaque(skiatest::Reporter* reporter,
35 const SkBitmap& srcOpaque, const SkBitmap& srcPremul,
36 SkColorType dstColorType) {
37 SkBitmap dst;
38
39 if (canHaveAlpha(srcPremul.colorType()) && canHaveAlpha(dstColorType)) {
40 REPORTER_ASSERT(reporter, srcPremul.copyTo(&dst, dstColorType));
41 REPORTER_ASSERT(reporter, dst.colorType() == dstColorType);
42 if (srcPremul.isOpaque() != dst.isOpaque()) {
43 report_opaqueness(reporter, srcPremul, dst);
44 }
45 }
46
47 REPORTER_ASSERT(reporter, srcOpaque.copyTo(&dst, dstColorType));
48 REPORTER_ASSERT(reporter, dst.colorType() == dstColorType);
49 if (srcOpaque.isOpaque() != dst.isOpaque()) {
50 report_opaqueness(reporter, srcOpaque, dst);
51 }
52 }
53
init_src(const SkBitmap & bitmap)54 static void init_src(const SkBitmap& bitmap) {
55 SkAutoLockPixels lock(bitmap);
56 if (bitmap.getPixels()) {
57 if (bitmap.getColorTable()) {
58 sk_bzero(bitmap.getPixels(), bitmap.getSize());
59 } else {
60 bitmap.eraseColor(SK_ColorWHITE);
61 }
62 }
63 }
64
init_ctable()65 static SkColorTable* init_ctable() {
66 static const SkColor colors[] = {
67 SK_ColorBLACK, SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE
68 };
69 return new SkColorTable(colors, SK_ARRAY_COUNT(colors));
70 }
71
72 struct Pair {
73 SkColorType fColorType;
74 const char* fValid;
75 };
76
77 // Utility functions for copyPixelsTo()/copyPixelsFrom() tests.
78 // getPixel()
79 // setPixel()
80 // getSkConfigName()
81 // struct Coordinates
82 // reportCopyVerification()
83 // writeCoordPixels()
84
85 // Utility function to read the value of a given pixel in bm. All
86 // values converted to uint32_t for simplification of comparisons.
getPixel(int x,int y,const SkBitmap & bm)87 static uint32_t getPixel(int x, int y, const SkBitmap& bm) {
88 uint32_t val = 0;
89 uint16_t val16;
90 uint8_t val8;
91 SkAutoLockPixels lock(bm);
92 const void* rawAddr = bm.getAddr(x,y);
93
94 switch (bm.bytesPerPixel()) {
95 case 4:
96 memcpy(&val, rawAddr, sizeof(uint32_t));
97 break;
98 case 2:
99 memcpy(&val16, rawAddr, sizeof(uint16_t));
100 val = val16;
101 break;
102 case 1:
103 memcpy(&val8, rawAddr, sizeof(uint8_t));
104 val = val8;
105 break;
106 default:
107 break;
108 }
109 return val;
110 }
111
112 // Utility function to set value of any pixel in bm.
113 // bm.getConfig() specifies what format 'val' must be
114 // converted to, but at present uint32_t can handle all formats.
setPixel(int x,int y,uint32_t val,SkBitmap & bm)115 static void setPixel(int x, int y, uint32_t val, SkBitmap& bm) {
116 uint16_t val16;
117 uint8_t val8;
118 SkAutoLockPixels lock(bm);
119 void* rawAddr = bm.getAddr(x,y);
120
121 switch (bm.bytesPerPixel()) {
122 case 4:
123 memcpy(rawAddr, &val, sizeof(uint32_t));
124 break;
125 case 2:
126 val16 = val & 0xFFFF;
127 memcpy(rawAddr, &val16, sizeof(uint16_t));
128 break;
129 case 1:
130 val8 = val & 0xFF;
131 memcpy(rawAddr, &val8, sizeof(uint8_t));
132 break;
133 default:
134 // Ignore.
135 break;
136 }
137 }
138
139 // Helper struct to contain pixel locations, while avoiding need for STL.
140 struct Coordinates {
141
142 const int length;
143 SkIPoint* const data;
144
CoordinatesCoordinates145 explicit Coordinates(int _length): length(_length)
146 , data(new SkIPoint[length]) { }
147
~CoordinatesCoordinates148 ~Coordinates(){
149 delete [] data;
150 }
151
operator []Coordinates152 SkIPoint* operator[](int i) const {
153 // Use with care, no bounds checking.
154 return data + i;
155 }
156 };
157
158 // A function to verify that two bitmaps contain the same pixel values
159 // at all coordinates indicated by coords. Simplifies verification of
160 // copied bitmaps.
reportCopyVerification(const SkBitmap & bm1,const SkBitmap & bm2,Coordinates & coords,const char * msg,skiatest::Reporter * reporter)161 static void reportCopyVerification(const SkBitmap& bm1, const SkBitmap& bm2,
162 Coordinates& coords,
163 const char* msg,
164 skiatest::Reporter* reporter){
165 // Confirm all pixels in the list match.
166 for (int i = 0; i < coords.length; ++i) {
167 uint32_t p1 = getPixel(coords[i]->fX, coords[i]->fY, bm1);
168 uint32_t p2 = getPixel(coords[i]->fX, coords[i]->fY, bm2);
169 // SkDebugf("[%d] (%d %d) p1=%x p2=%x\n", i, coords[i]->fX, coords[i]->fY, p1, p2);
170 if (p1 != p2) {
171 ERRORF(reporter, "%s [colortype = %s]", msg, gColorTypeName[bm1.colorType()]);
172 break;
173 }
174 }
175 }
176
177 // Writes unique pixel values at locations specified by coords.
writeCoordPixels(SkBitmap & bm,const Coordinates & coords)178 static void writeCoordPixels(SkBitmap& bm, const Coordinates& coords) {
179 for (int i = 0; i < coords.length; ++i)
180 setPixel(coords[i]->fX, coords[i]->fY, i, bm);
181 }
182
183 static const Pair gPairs[] = {
184 { kUnknown_SkColorType, "000000" },
185 { kAlpha_8_SkColorType, "010101" },
186 { kIndex_8_SkColorType, "011111" },
187 { kRGB_565_SkColorType, "010101" },
188 { kARGB_4444_SkColorType, "010111" },
189 { kN32_SkColorType, "010111" },
190 };
191
192 static const int W = 20;
193 static const int H = 33;
194
setup_src_bitmaps(SkBitmap * srcOpaque,SkBitmap * srcPremul,SkColorType ct)195 static void setup_src_bitmaps(SkBitmap* srcOpaque, SkBitmap* srcPremul,
196 SkColorType ct) {
197 SkColorTable* ctable = nullptr;
198 if (kIndex_8_SkColorType == ct) {
199 ctable = init_ctable();
200 }
201
202 srcOpaque->allocPixels(SkImageInfo::Make(W, H, ct, kOpaque_SkAlphaType),
203 nullptr, ctable);
204 srcPremul->allocPixels(SkImageInfo::Make(W, H, ct, kPremul_SkAlphaType),
205 nullptr, ctable);
206 SkSafeUnref(ctable);
207 init_src(*srcOpaque);
208 init_src(*srcPremul);
209 }
210
DEF_TEST(BitmapCopy_extractSubset,reporter)211 DEF_TEST(BitmapCopy_extractSubset, reporter) {
212 for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
213 SkBitmap srcOpaque, srcPremul;
214 setup_src_bitmaps(&srcOpaque, &srcPremul, gPairs[i].fColorType);
215
216 SkBitmap bitmap(srcOpaque);
217 SkBitmap subset;
218 SkIRect r;
219 // Extract a subset which has the same width as the original. This
220 // catches a bug where we cloned the genID incorrectly.
221 r.set(0, 1, W, 3);
222 bitmap.setIsVolatile(true);
223 // Relies on old behavior of extractSubset failing if colortype is unknown
224 if (kUnknown_SkColorType != bitmap.colorType() && bitmap.extractSubset(&subset, r)) {
225 REPORTER_ASSERT(reporter, subset.width() == W);
226 REPORTER_ASSERT(reporter, subset.height() == 2);
227 REPORTER_ASSERT(reporter, subset.alphaType() == bitmap.alphaType());
228 REPORTER_ASSERT(reporter, subset.isVolatile() == true);
229
230 // Test copying an extracted subset.
231 for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) {
232 SkBitmap copy;
233 bool success = subset.copyTo(©, gPairs[j].fColorType);
234 if (!success) {
235 // Skip checking that success matches fValid, which is redundant
236 // with the code below.
237 REPORTER_ASSERT(reporter, gPairs[i].fColorType != gPairs[j].fColorType);
238 continue;
239 }
240
241 // When performing a copy of an extracted subset, the gen id should
242 // change.
243 REPORTER_ASSERT(reporter, copy.getGenerationID() != subset.getGenerationID());
244
245 REPORTER_ASSERT(reporter, copy.width() == W);
246 REPORTER_ASSERT(reporter, copy.height() == 2);
247
248 if (gPairs[i].fColorType == gPairs[j].fColorType) {
249 SkAutoLockPixels alp0(subset);
250 SkAutoLockPixels alp1(copy);
251 // they should both have, or both not-have, a colortable
252 bool hasCT = subset.getColorTable() != nullptr;
253 REPORTER_ASSERT(reporter, (copy.getColorTable() != nullptr) == hasCT);
254 }
255 }
256 }
257
258 bitmap = srcPremul;
259 bitmap.setIsVolatile(false);
260 if (bitmap.extractSubset(&subset, r)) {
261 REPORTER_ASSERT(reporter, subset.alphaType() == bitmap.alphaType());
262 REPORTER_ASSERT(reporter, subset.isVolatile() == false);
263 }
264 }
265 }
266
DEF_TEST(BitmapCopy,reporter)267 DEF_TEST(BitmapCopy, reporter) {
268 static const bool isExtracted[] = {
269 false, true
270 };
271
272 for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
273 SkBitmap srcOpaque, srcPremul;
274 setup_src_bitmaps(&srcOpaque, &srcPremul, gPairs[i].fColorType);
275
276 for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) {
277 SkBitmap dst;
278
279 bool success = srcPremul.copyTo(&dst, gPairs[j].fColorType);
280 bool expected = gPairs[i].fValid[j] != '0';
281 if (success != expected) {
282 ERRORF(reporter, "SkBitmap::copyTo from %s to %s. expected %s "
283 "returned %s", gColorTypeName[i], gColorTypeName[j],
284 boolStr(expected), boolStr(success));
285 }
286
287 bool canSucceed = srcPremul.canCopyTo(gPairs[j].fColorType);
288 if (success != canSucceed) {
289 ERRORF(reporter, "SkBitmap::copyTo from %s to %s. returned %s "
290 "canCopyTo %s", gColorTypeName[i], gColorTypeName[j],
291 boolStr(success), boolStr(canSucceed));
292 }
293
294 if (success) {
295 REPORTER_ASSERT(reporter, srcPremul.width() == dst.width());
296 REPORTER_ASSERT(reporter, srcPremul.height() == dst.height());
297 REPORTER_ASSERT(reporter, dst.colorType() == gPairs[j].fColorType);
298 test_isOpaque(reporter, srcOpaque, srcPremul, dst.colorType());
299 if (srcPremul.colorType() == dst.colorType()) {
300 SkAutoLockPixels srcLock(srcPremul);
301 SkAutoLockPixels dstLock(dst);
302 REPORTER_ASSERT(reporter, srcPremul.readyToDraw());
303 REPORTER_ASSERT(reporter, dst.readyToDraw());
304 const char* srcP = (const char*)srcPremul.getAddr(0, 0);
305 const char* dstP = (const char*)dst.getAddr(0, 0);
306 REPORTER_ASSERT(reporter, srcP != dstP);
307 REPORTER_ASSERT(reporter, !memcmp(srcP, dstP,
308 srcPremul.getSize()));
309 REPORTER_ASSERT(reporter, srcPremul.getGenerationID() == dst.getGenerationID());
310 } else {
311 REPORTER_ASSERT(reporter, srcPremul.getGenerationID() != dst.getGenerationID());
312 }
313 } else {
314 // dst should be unchanged from its initial state
315 REPORTER_ASSERT(reporter, dst.colorType() == kUnknown_SkColorType);
316 REPORTER_ASSERT(reporter, dst.width() == 0);
317 REPORTER_ASSERT(reporter, dst.height() == 0);
318 }
319 } // for (size_t j = ...
320
321 // Tests for getSafeSize(), getSafeSize64(), copyPixelsTo(),
322 // copyPixelsFrom().
323 //
324 for (size_t copyCase = 0; copyCase < SK_ARRAY_COUNT(isExtracted);
325 ++copyCase) {
326 // Test copying to/from external buffer.
327 // Note: the tests below have hard-coded values ---
328 // Please take care if modifying.
329
330 // Tests for getSafeSize64().
331 // Test with a very large configuration without pixel buffer
332 // attached.
333 SkBitmap tstSafeSize;
334 tstSafeSize.setInfo(SkImageInfo::Make(100000000U, 100000000U,
335 gPairs[i].fColorType, kPremul_SkAlphaType));
336 int64_t safeSize = tstSafeSize.computeSafeSize64();
337 if (safeSize < 0) {
338 ERRORF(reporter, "getSafeSize64() negative: %s",
339 gColorTypeName[tstSafeSize.colorType()]);
340 }
341 bool sizeFail = false;
342 // Compare against hand-computed values.
343 switch (gPairs[i].fColorType) {
344 case kUnknown_SkColorType:
345 break;
346
347 case kAlpha_8_SkColorType:
348 case kIndex_8_SkColorType:
349 if (safeSize != 0x2386F26FC10000LL) {
350 sizeFail = true;
351 }
352 break;
353
354 case kRGB_565_SkColorType:
355 case kARGB_4444_SkColorType:
356 if (safeSize != 0x470DE4DF820000LL) {
357 sizeFail = true;
358 }
359 break;
360
361 case kN32_SkColorType:
362 if (safeSize != 0x8E1BC9BF040000LL) {
363 sizeFail = true;
364 }
365 break;
366
367 default:
368 break;
369 }
370 if (sizeFail) {
371 ERRORF(reporter, "computeSafeSize64() wrong size: %s",
372 gColorTypeName[tstSafeSize.colorType()]);
373 }
374
375 int subW = 2;
376 int subH = 2;
377
378 // Create bitmap to act as source for copies and subsets.
379 SkBitmap src, subset;
380 SkColorTable* ct = nullptr;
381 if (kIndex_8_SkColorType == src.colorType()) {
382 ct = init_ctable();
383 }
384
385 int localSubW;
386 if (isExtracted[copyCase]) { // A larger image to extract from.
387 localSubW = 2 * subW + 1;
388 } else { // Tests expect a 2x2 bitmap, so make smaller.
389 localSubW = subW;
390 }
391 // could fail if we pass kIndex_8 for the colortype
392 if (src.tryAllocPixels(SkImageInfo::Make(localSubW, subH, gPairs[i].fColorType,
393 kPremul_SkAlphaType))) {
394 // failure is fine, as we will notice later on
395 }
396 SkSafeUnref(ct);
397
398 // Either copy src or extract into 'subset', which is used
399 // for subsequent calls to copyPixelsTo/From.
400 bool srcReady = false;
401 // Test relies on older behavior that extractSubset will fail on
402 // kUnknown_SkColorType
403 if (kUnknown_SkColorType != src.colorType() &&
404 isExtracted[copyCase]) {
405 // The extractedSubset() test case allows us to test copy-
406 // ing when src and dst mave possibly different strides.
407 SkIRect r;
408 r.set(1, 0, 1 + subW, subH); // 2x2 extracted bitmap
409
410 srcReady = src.extractSubset(&subset, r);
411 } else {
412 srcReady = src.copyTo(&subset);
413 }
414
415 // Not all configurations will generate a valid 'subset'.
416 if (srcReady) {
417
418 // Allocate our target buffer 'buf' for all copies.
419 // To simplify verifying correctness of copies attach
420 // buf to a SkBitmap, but copies are done using the
421 // raw buffer pointer.
422 const size_t bufSize = subH *
423 SkColorTypeMinRowBytes(src.colorType(), subW) * 2;
424 SkAutoTMalloc<uint8_t> autoBuf (bufSize);
425 uint8_t* buf = autoBuf.get();
426
427 SkBitmap bufBm; // Attach buf to this bitmap.
428 bool successExpected;
429
430 // Set up values for each pixel being copied.
431 Coordinates coords(subW * subH);
432 for (int x = 0; x < subW; ++x)
433 for (int y = 0; y < subH; ++y)
434 {
435 int index = y * subW + x;
436 SkASSERT(index < coords.length);
437 coords[index]->fX = x;
438 coords[index]->fY = y;
439 }
440
441 writeCoordPixels(subset, coords);
442
443 // Test #1 ////////////////////////////////////////////
444
445 const SkImageInfo info = SkImageInfo::Make(subW, subH,
446 gPairs[i].fColorType,
447 kPremul_SkAlphaType);
448 // Before/after comparisons easier if we attach buf
449 // to an appropriately configured SkBitmap.
450 memset(buf, 0xFF, bufSize);
451 // Config with stride greater than src but that fits in buf.
452 bufBm.installPixels(info, buf, info.minRowBytes() * 2);
453 successExpected = false;
454 // Then attempt to copy with a stride that is too large
455 // to fit in the buffer.
456 REPORTER_ASSERT(reporter,
457 subset.copyPixelsTo(buf, bufSize, bufBm.rowBytes() * 3)
458 == successExpected);
459
460 if (successExpected)
461 reportCopyVerification(subset, bufBm, coords,
462 "copyPixelsTo(buf, bufSize, 1.5*maxRowBytes)",
463 reporter);
464
465 // Test #2 ////////////////////////////////////////////
466 // This test should always succeed, but in the case
467 // of extracted bitmaps only because we handle the
468 // issue of getSafeSize(). Without getSafeSize()
469 // buffer overrun/read would occur.
470 memset(buf, 0xFF, bufSize);
471 bufBm.installPixels(info, buf, subset.rowBytes());
472 successExpected = subset.getSafeSize() <= bufSize;
473 REPORTER_ASSERT(reporter,
474 subset.copyPixelsTo(buf, bufSize) ==
475 successExpected);
476 if (successExpected)
477 reportCopyVerification(subset, bufBm, coords,
478 "copyPixelsTo(buf, bufSize)", reporter);
479
480 // Test #3 ////////////////////////////////////////////
481 // Copy with different stride between src and dst.
482 memset(buf, 0xFF, bufSize);
483 bufBm.installPixels(info, buf, subset.rowBytes()+1);
484 successExpected = true; // Should always work.
485 REPORTER_ASSERT(reporter,
486 subset.copyPixelsTo(buf, bufSize,
487 subset.rowBytes()+1) == successExpected);
488 if (successExpected)
489 reportCopyVerification(subset, bufBm, coords,
490 "copyPixelsTo(buf, bufSize, rowBytes+1)", reporter);
491
492 // Test #4 ////////////////////////////////////////////
493 // Test copy with stride too small.
494 memset(buf, 0xFF, bufSize);
495 bufBm.installPixels(info, buf, info.minRowBytes());
496 successExpected = false;
497 // Request copy with stride too small.
498 REPORTER_ASSERT(reporter,
499 subset.copyPixelsTo(buf, bufSize, bufBm.rowBytes()-1)
500 == successExpected);
501 if (successExpected)
502 reportCopyVerification(subset, bufBm, coords,
503 "copyPixelsTo(buf, bufSize, rowBytes()-1)", reporter);
504
505 #if 0 // copyPixelsFrom is gone
506 // Test #5 ////////////////////////////////////////////
507 // Tests the case where the source stride is too small
508 // for the source configuration.
509 memset(buf, 0xFF, bufSize);
510 bufBm.installPixels(info, buf, info.minRowBytes());
511 writeCoordPixels(bufBm, coords);
512 REPORTER_ASSERT(reporter,
513 subset.copyPixelsFrom(buf, bufSize, 1) == false);
514
515 // Test #6 ///////////////////////////////////////////
516 // Tests basic copy from an external buffer to the bitmap.
517 // If the bitmap is "extracted", this also tests the case
518 // where the source stride is different from the dest.
519 // stride.
520 // We've made the buffer large enough to always succeed.
521 bufBm.installPixels(info, buf, info.minRowBytes());
522 writeCoordPixels(bufBm, coords);
523 REPORTER_ASSERT(reporter,
524 subset.copyPixelsFrom(buf, bufSize, bufBm.rowBytes()) ==
525 true);
526 reportCopyVerification(bufBm, subset, coords,
527 "copyPixelsFrom(buf, bufSize)",
528 reporter);
529
530 // Test #7 ////////////////////////////////////////////
531 // Tests the case where the source buffer is too small
532 // for the transfer.
533 REPORTER_ASSERT(reporter,
534 subset.copyPixelsFrom(buf, 1, subset.rowBytes()) ==
535 false);
536
537 #endif
538 }
539 } // for (size_t copyCase ...
540 }
541 }
542
543 #include "SkColorPriv.h"
544 #include "SkUtils.h"
545
546 /**
547 * Construct 4x4 pixels where we can look at a color and determine where it should be in the grid.
548 * alpha = 0xFF, blue = 0x80, red = x, green = y
549 */
fill_4x4_pixels(SkPMColor colors[16])550 static void fill_4x4_pixels(SkPMColor colors[16]) {
551 for (int y = 0; y < 4; ++y) {
552 for (int x = 0; x < 4; ++x) {
553 colors[y*4+x] = SkPackARGB32(0xFF, x, y, 0x80);
554 }
555 }
556 }
557
check_4x4_pixel(SkPMColor color,unsigned x,unsigned y)558 static bool check_4x4_pixel(SkPMColor color, unsigned x, unsigned y) {
559 SkASSERT(x < 4 && y < 4);
560 return 0xFF == SkGetPackedA32(color) &&
561 x == SkGetPackedR32(color) &&
562 y == SkGetPackedG32(color) &&
563 0x80 == SkGetPackedB32(color);
564 }
565
566 /**
567 * Fill with all zeros, which will never match any value from fill_4x4_pixels
568 */
clear_4x4_pixels(SkPMColor colors[16])569 static void clear_4x4_pixels(SkPMColor colors[16]) {
570 sk_memset32(colors, 0, 16);
571 }
572
573 // Much of readPixels is exercised by copyTo testing, since readPixels is the backend for that
574 // method. Here we explicitly test subset copies.
575 //
DEF_TEST(BitmapReadPixels,reporter)576 DEF_TEST(BitmapReadPixels, reporter) {
577 const int W = 4;
578 const int H = 4;
579 const size_t rowBytes = W * sizeof(SkPMColor);
580 const SkImageInfo srcInfo = SkImageInfo::MakeN32Premul(W, H);
581 SkPMColor srcPixels[16];
582 fill_4x4_pixels(srcPixels);
583 SkBitmap srcBM;
584 srcBM.installPixels(srcInfo, srcPixels, rowBytes);
585
586 SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(W, H);
587 SkPMColor dstPixels[16];
588
589 const struct {
590 bool fExpectedSuccess;
591 SkIPoint fRequestedSrcLoc;
592 SkISize fRequestedDstSize;
593 // If fExpectedSuccess, check these, otherwise ignore
594 SkIPoint fExpectedDstLoc;
595 SkIRect fExpectedSrcR;
596 } gRec[] = {
597 { true, { 0, 0 }, { 4, 4 }, { 0, 0 }, { 0, 0, 4, 4 } },
598 { true, { 1, 1 }, { 2, 2 }, { 0, 0 }, { 1, 1, 3, 3 } },
599 { true, { 2, 2 }, { 4, 4 }, { 0, 0 }, { 2, 2, 4, 4 } },
600 { true, {-1,-1 }, { 2, 2 }, { 1, 1 }, { 0, 0, 1, 1 } },
601 { false, {-1,-1 }, { 1, 1 }, { 0, 0 }, { 0, 0, 0, 0 } },
602 };
603
604 for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
605 clear_4x4_pixels(dstPixels);
606
607 dstInfo = dstInfo.makeWH(gRec[i].fRequestedDstSize.width(),
608 gRec[i].fRequestedDstSize.height());
609 bool success = srcBM.readPixels(dstInfo, dstPixels, rowBytes,
610 gRec[i].fRequestedSrcLoc.x(), gRec[i].fRequestedSrcLoc.y());
611
612 REPORTER_ASSERT(reporter, gRec[i].fExpectedSuccess == success);
613 if (success) {
614 const SkIRect srcR = gRec[i].fExpectedSrcR;
615 const int dstX = gRec[i].fExpectedDstLoc.x();
616 const int dstY = gRec[i].fExpectedDstLoc.y();
617 // Walk the dst pixels, and check if we got what we expected
618 for (int y = 0; y < H; ++y) {
619 for (int x = 0; x < W; ++x) {
620 SkPMColor dstC = dstPixels[y*4+x];
621 // get into src coordinates
622 int sx = x - dstX + srcR.x();
623 int sy = y - dstY + srcR.y();
624 if (srcR.contains(sx, sy)) {
625 REPORTER_ASSERT(reporter, check_4x4_pixel(dstC, sx, sy));
626 } else {
627 REPORTER_ASSERT(reporter, 0 == dstC);
628 }
629 }
630 }
631 }
632 }
633 }
634
635 #if SK_SUPPORT_GPU
636
637 #include "GrContext.h"
638 #include "SkGr.h"
639 #include "SkColorPriv.h"
640 /** Tests calling copyTo on a texture backed bitmap. Tests that all BGRA_8888/RGBA_8888 combinations
641 of src and dst work. This test should be removed when SkGrPixelRef is removed. */
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(BitmapCopy_Texture,reporter,ctx)642 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(BitmapCopy_Texture, reporter, ctx) {
643 static const SkPMColor kData[] = {
644 0xFF112233, 0xAF224499,
645 0xEF004466, 0x80773311
646 };
647
648 uint32_t swizData[SK_ARRAY_COUNT(kData)];
649 for (size_t i = 0; i < SK_ARRAY_COUNT(kData); ++i) {
650 swizData[i] = SkSwizzle_RB(kData[i]);
651 }
652
653 static const GrPixelConfig kSrcConfigs[] = {
654 kRGBA_8888_GrPixelConfig,
655 kBGRA_8888_GrPixelConfig,
656 };
657
658 for (size_t srcC = 0; srcC < SK_ARRAY_COUNT(kSrcConfigs); ++srcC) {
659 for (int rt = 0; rt < 2; ++rt) {
660 GrSurfaceDesc desc;
661 desc.fConfig = kSrcConfigs[srcC];
662 desc.fFlags = rt ? kRenderTarget_GrSurfaceFlag : kNone_GrSurfaceFlags;
663 desc.fWidth = 2;
664 desc.fHeight = 2;
665 desc.fOrigin = kTopLeft_GrSurfaceOrigin;
666
667 const void* srcData = (kSkia8888_GrPixelConfig == desc.fConfig) ? kData : swizData;
668
669 SkAutoTUnref<GrTexture> texture(
670 ctx->textureProvider()->createTexture(desc, SkBudgeted::kNo, srcData, 0));
671
672 if (!texture) {
673 continue;
674 }
675
676 SkBitmap srcBmp;
677 GrWrapTextureInBitmap(texture, 2, 2, false, &srcBmp);
678 if (srcBmp.isNull()) {
679 ERRORF(reporter, "Could not wrap texture in bitmap.");
680 continue;
681 }
682 static const SkColorType kDstCTs[] = { kRGBA_8888_SkColorType, kBGRA_8888_SkColorType };
683 for (size_t dCT = 0; dCT < SK_ARRAY_COUNT(kDstCTs); ++dCT) {
684 SkBitmap dstBmp;
685 if (!srcBmp.copyTo(&dstBmp, kDstCTs[dCT])) {
686 ERRORF(reporter, "CopyTo failed.");
687 }
688 if (dstBmp.colorType() != kDstCTs[dCT]) {
689 ERRORF(reporter, "SkBitmap::CopyTo did not respect passed in color type.");
690 }
691 SkAutoLockPixels alp(dstBmp);
692 uint8_t* dstBmpPixels = static_cast<uint8_t*>(dstBmp.getPixels());
693 const uint32_t* refData;
694 #if defined(SK_PMCOLOR_IS_RGBA)
695 refData = (kRGBA_8888_SkColorType == dstBmp.colorType()) ? kData : swizData;
696 #elif defined(SK_PMCOLOR_IS_BGRA)
697 refData = (kBGRA_8888_SkColorType == dstBmp.colorType()) ? kData : swizData;
698 #else
699 #error "PM Color must be BGRA or RGBA to use GPU backend."
700 #endif
701 bool foundError = false;
702 for (int y = 0; y < 2 && !foundError; ++y) {
703 uint32_t* dstBmpRow = reinterpret_cast<uint32_t*>(dstBmpPixels);
704 for (int x = 0; x < 2 && !foundError; ++x) {
705 if (refData[2 * y + x] != dstBmpRow[x]) {
706 ERRORF(reporter, "Expected pixel 0x%08x, found 0x%08x.",
707 refData[2 * y + x], dstBmpRow[x]);
708 foundError = true;
709 }
710 }
711 dstBmpPixels += dstBmp.rowBytes();
712 }
713 }
714 }
715 }
716 }
717
718 #endif
719