/**
* Check to ensure that copying a GPU-backed SkBitmap behaved as expected.
* @param reporter Used to report failures.
* @param desiredConfig Config being copied to. If the copy succeeded, dst must have this Config.
* @param success True if the copy succeeded.
* @param src A GPU-backed SkBitmap that had copyTo or deepCopyTo called on it.
* @param dst SkBitmap that was copied to.
* @param deepCopy True if deepCopyTo was used; false if copyTo was used.
*/
static void TestIndividualCopy(skiatest::Reporter* reporter, const SkBitmap::Config desiredConfig,
const bool success, const SkBitmap& src, const SkBitmap& dst,
const bool deepCopy = true) {
if (success) {
REPORTER_ASSERT(reporter, src.width() == dst.width());
REPORTER_ASSERT(reporter, src.height() == dst.height());
REPORTER_ASSERT(reporter, dst.config() == desiredConfig);
if (src.config() == dst.config()) {
// FIXME: When calling copyTo (so deepCopy is false here), sometimes we copy the pixels
// exactly, in which case the IDs should be the same, but sometimes we do a bitmap draw,
// in which case the IDs should not be the same. Is there any way to determine which is
// the case at this point?
if (deepCopy) {
REPORTER_ASSERT(reporter, src.getGenerationID() == dst.getGenerationID());
}
REPORTER_ASSERT(reporter, src.pixelRef() != NULL && dst.pixelRef() != NULL);
// Do read backs and make sure that the two are the same.
SkBitmap srcReadBack, dstReadBack;
{
SkASSERT(src.getTexture() != NULL);
bool readBack = src.pixelRef()->readPixels(&srcReadBack);
REPORTER_ASSERT(reporter, readBack);
}
if (dst.getTexture() != NULL) {
bool readBack = dst.pixelRef()->readPixels(&dstReadBack);
REPORTER_ASSERT(reporter, readBack);
} else {
// If dst is not a texture, do a copy instead, to the same config as srcReadBack.
bool copy = dst.copyTo(&dstReadBack, srcReadBack.config());
REPORTER_ASSERT(reporter, copy);
}
SkAutoLockPixels srcLock(srcReadBack);
SkAutoLockPixels dstLock(dstReadBack);
REPORTER_ASSERT(reporter, srcReadBack.readyToDraw() && dstReadBack.readyToDraw());
const char* srcP = static_cast<const char*>(srcReadBack.getAddr(0, 0));
const char* dstP = static_cast<const char*>(dstReadBack.getAddr(0, 0));
REPORTER_ASSERT(reporter, srcP != dstP);
REPORTER_ASSERT(reporter, !memcmp(srcP, dstP, srcReadBack.getSize()));
} else {
REPORTER_ASSERT(reporter, src.getGenerationID() != dst.getGenerationID());
}
} else {
// dst should be unchanged from its initial state
REPORTER_ASSERT(reporter, dst.config() == SkBitmap::kNo_Config);
REPORTER_ASSERT(reporter, dst.width() == 0);
REPORTER_ASSERT(reporter, dst.height() == 0);
}
}
static void TestBitmapCopy(skiatest::Reporter* reporter) {
static const Pair gPairs[] = {
{ SkBitmap::kNo_Config, "00000000" },
{ SkBitmap::kA1_Config, "01000000" },
{ SkBitmap::kA8_Config, "00101110" },
{ SkBitmap::kIndex8_Config, "00111110" },
{ SkBitmap::kRGB_565_Config, "00101110" },
{ SkBitmap::kARGB_4444_Config, "00101110" },
{ SkBitmap::kARGB_8888_Config, "00101110" },
// TODO: create valid RLE bitmap to test with
// { SkBitmap::kRLE_Index8_Config, "00101111" }
};
const int W = 20;
const int H = 33;
for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) {
SkBitmap src, dst;
SkColorTable* ct = NULL;
src.setConfig(gPairs[i].fConfig, W, H);
if (SkBitmap::kIndex8_Config == src.config() ||
SkBitmap::kRLE_Index8_Config == src.config()) {
ct = init_ctable();
}
src.allocPixels(ct);
ct->safeRef();
init_src(src);
bool success = src.copyTo(&dst, gPairs[j].fConfig);
bool expected = gPairs[i].fValid[j] != '0';
if (success != expected) {
SkString str;
str.printf("SkBitmap::copyTo from %s to %s. expected %s returned %s",
gConfigName[i], gConfigName[j], boolStr(expected),
boolStr(success));
reporter->reportFailed(str);
}
bool canSucceed = src.canCopyTo(gPairs[j].fConfig);
if (success != canSucceed) {
SkString str;
str.printf("SkBitmap::copyTo from %s to %s. returned %s canCopyTo %s",
gConfigName[i], gConfigName[j], boolStr(success),
boolStr(canSucceed));
reporter->reportFailed(str);
}
if (success) {
REPORTER_ASSERT(reporter, src.width() == dst.width());
REPORTER_ASSERT(reporter, src.height() == dst.height());
REPORTER_ASSERT(reporter, dst.config() == gPairs[j].fConfig);
test_isOpaque(reporter, src, dst.config());
if (src.config() == dst.config()) {
SkAutoLockPixels srcLock(src);
SkAutoLockPixels dstLock(dst);
REPORTER_ASSERT(reporter, src.readyToDraw());
REPORTER_ASSERT(reporter, dst.readyToDraw());
const char* srcP = (const char*)src.getAddr(0, 0);
const char* dstP = (const char*)dst.getAddr(0, 0);
REPORTER_ASSERT(reporter, srcP != dstP);
REPORTER_ASSERT(reporter, !memcmp(srcP, dstP,
src.getSize()));
}
// test extractSubset
{
SkBitmap subset;
SkIRect r;
r.set(1, 1, 2, 2);
if (src.extractSubset(&subset, r)) {
REPORTER_ASSERT(reporter, subset.width() == 1);
REPORTER_ASSERT(reporter, subset.height() == 1);
SkBitmap copy;
REPORTER_ASSERT(reporter,
subset.copyTo(©, subset.config()));
REPORTER_ASSERT(reporter, copy.width() == 1);
REPORTER_ASSERT(reporter, copy.height() == 1);
REPORTER_ASSERT(reporter, copy.rowBytes() <= 4);
SkAutoLockPixels alp0(subset);
SkAutoLockPixels alp1(copy);
// they should both have, or both not-have, a colortable
bool hasCT = subset.getColorTable() != NULL;
REPORTER_ASSERT(reporter,
(copy.getColorTable() != NULL) == hasCT);
}
}
} else {
// dst should be unchanged from its initial state
REPORTER_ASSERT(reporter, dst.config() == SkBitmap::kNo_Config);
REPORTER_ASSERT(reporter, dst.width() == 0);
REPORTER_ASSERT(reporter, dst.height() == 0);
}
}
}
}
DEF_TEST(BitmapCopy, reporter) {
static const bool isExtracted[] = {
false, true
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
SkBitmap srcOpaque, srcPremul;
setup_src_bitmaps(&srcOpaque, &srcPremul, gPairs[i].fColorType);
for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) {
SkBitmap dst;
bool success = srcPremul.copyTo(&dst, gPairs[j].fColorType);
bool expected = gPairs[i].fValid[j] != '0';
if (success != expected) {
ERRORF(reporter, "SkBitmap::copyTo from %s to %s. expected %s "
"returned %s", gColorTypeName[i], gColorTypeName[j],
boolStr(expected), boolStr(success));
}
bool canSucceed = srcPremul.canCopyTo(gPairs[j].fColorType);
if (success != canSucceed) {
ERRORF(reporter, "SkBitmap::copyTo from %s to %s. returned %s "
"canCopyTo %s", gColorTypeName[i], gColorTypeName[j],
boolStr(success), boolStr(canSucceed));
}
if (success) {
REPORTER_ASSERT(reporter, srcPremul.width() == dst.width());
REPORTER_ASSERT(reporter, srcPremul.height() == dst.height());
REPORTER_ASSERT(reporter, dst.colorType() == gPairs[j].fColorType);
test_isOpaque(reporter, srcOpaque, srcPremul, dst.colorType());
if (srcPremul.colorType() == dst.colorType()) {
SkAutoLockPixels srcLock(srcPremul);
SkAutoLockPixels dstLock(dst);
REPORTER_ASSERT(reporter, srcPremul.readyToDraw());
REPORTER_ASSERT(reporter, dst.readyToDraw());
const char* srcP = (const char*)srcPremul.getAddr(0, 0);
const char* dstP = (const char*)dst.getAddr(0, 0);
REPORTER_ASSERT(reporter, srcP != dstP);
REPORTER_ASSERT(reporter, !memcmp(srcP, dstP,
srcPremul.getSize()));
REPORTER_ASSERT(reporter, srcPremul.getGenerationID() == dst.getGenerationID());
} else {
REPORTER_ASSERT(reporter, srcPremul.getGenerationID() != dst.getGenerationID());
}
} else {
// dst should be unchanged from its initial state
REPORTER_ASSERT(reporter, dst.colorType() == kUnknown_SkColorType);
REPORTER_ASSERT(reporter, dst.width() == 0);
REPORTER_ASSERT(reporter, dst.height() == 0);
}
} // for (size_t j = ...
// Tests for getSafeSize(), getSafeSize64(), copyPixelsTo(),
// copyPixelsFrom().
//
for (size_t copyCase = 0; copyCase < SK_ARRAY_COUNT(isExtracted);
++copyCase) {
// Test copying to/from external buffer.
// Note: the tests below have hard-coded values ---
// Please take care if modifying.
// Tests for getSafeSize64().
// Test with a very large configuration without pixel buffer
// attached.
SkBitmap tstSafeSize;
tstSafeSize.setInfo(SkImageInfo::Make(100000000U, 100000000U,
gPairs[i].fColorType, kPremul_SkAlphaType));
int64_t safeSize = tstSafeSize.computeSafeSize64();
if (safeSize < 0) {
ERRORF(reporter, "getSafeSize64() negative: %s",
gColorTypeName[tstSafeSize.colorType()]);
}
bool sizeFail = false;
// Compare against hand-computed values.
switch (gPairs[i].fColorType) {
case kUnknown_SkColorType:
break;
case kAlpha_8_SkColorType:
case kIndex_8_SkColorType:
if (safeSize != 0x2386F26FC10000LL) {
sizeFail = true;
}
break;
case kRGB_565_SkColorType:
case kARGB_4444_SkColorType:
if (safeSize != 0x470DE4DF820000LL) {
sizeFail = true;
}
break;
case kN32_SkColorType:
if (safeSize != 0x8E1BC9BF040000LL) {
sizeFail = true;
}
break;
default:
break;
}
if (sizeFail) {
ERRORF(reporter, "computeSafeSize64() wrong size: %s",
gColorTypeName[tstSafeSize.colorType()]);
}
int subW = 2;
int subH = 2;
// Create bitmap to act as source for copies and subsets.
SkBitmap src, subset;
SkColorTable* ct = nullptr;
if (kIndex_8_SkColorType == src.colorType()) {
ct = init_ctable();
}
int localSubW;
if (isExtracted[copyCase]) { // A larger image to extract from.
localSubW = 2 * subW + 1;
} else { // Tests expect a 2x2 bitmap, so make smaller.
localSubW = subW;
}
// could fail if we pass kIndex_8 for the colortype
if (src.tryAllocPixels(SkImageInfo::Make(localSubW, subH, gPairs[i].fColorType,
kPremul_SkAlphaType))) {
// failure is fine, as we will notice later on
}
SkSafeUnref(ct);
// Either copy src or extract into 'subset', which is used
// for subsequent calls to copyPixelsTo/From.
bool srcReady = false;
// Test relies on older behavior that extractSubset will fail on
// kUnknown_SkColorType
if (kUnknown_SkColorType != src.colorType() &&
isExtracted[copyCase]) {
// The extractedSubset() test case allows us to test copy-
// ing when src and dst mave possibly different strides.
SkIRect r;
r.set(1, 0, 1 + subW, subH); // 2x2 extracted bitmap
srcReady = src.extractSubset(&subset, r);
} else {
srcReady = src.copyTo(&subset);
}
// Not all configurations will generate a valid 'subset'.
if (srcReady) {
// Allocate our target buffer 'buf' for all copies.
// To simplify verifying correctness of copies attach
// buf to a SkBitmap, but copies are done using the
// raw buffer pointer.
const size_t bufSize = subH *
SkColorTypeMinRowBytes(src.colorType(), subW) * 2;
SkAutoTMalloc<uint8_t> autoBuf (bufSize);
uint8_t* buf = autoBuf.get();
SkBitmap bufBm; // Attach buf to this bitmap.
bool successExpected;
// Set up values for each pixel being copied.
Coordinates coords(subW * subH);
for (int x = 0; x < subW; ++x)
for (int y = 0; y < subH; ++y)
{
int index = y * subW + x;
SkASSERT(index < coords.length);
coords[index]->fX = x;
coords[index]->fY = y;
}
writeCoordPixels(subset, coords);
// Test #1 ////////////////////////////////////////////
const SkImageInfo info = SkImageInfo::Make(subW, subH,
gPairs[i].fColorType,
kPremul_SkAlphaType);
// Before/after comparisons easier if we attach buf
// to an appropriately configured SkBitmap.
memset(buf, 0xFF, bufSize);
// Config with stride greater than src but that fits in buf.
bufBm.installPixels(info, buf, info.minRowBytes() * 2);
successExpected = false;
// Then attempt to copy with a stride that is too large
// to fit in the buffer.
REPORTER_ASSERT(reporter,
subset.copyPixelsTo(buf, bufSize, bufBm.rowBytes() * 3)
== successExpected);
if (successExpected)
reportCopyVerification(subset, bufBm, coords,
"copyPixelsTo(buf, bufSize, 1.5*maxRowBytes)",
reporter);
// Test #2 ////////////////////////////////////////////
// This test should always succeed, but in the case
// of extracted bitmaps only because we handle the
// issue of getSafeSize(). Without getSafeSize()
// buffer overrun/read would occur.
memset(buf, 0xFF, bufSize);
bufBm.installPixels(info, buf, subset.rowBytes());
successExpected = subset.getSafeSize() <= bufSize;
REPORTER_ASSERT(reporter,
subset.copyPixelsTo(buf, bufSize) ==
successExpected);
if (successExpected)
reportCopyVerification(subset, bufBm, coords,
"copyPixelsTo(buf, bufSize)", reporter);
// Test #3 ////////////////////////////////////////////
// Copy with different stride between src and dst.
memset(buf, 0xFF, bufSize);
bufBm.installPixels(info, buf, subset.rowBytes()+1);
successExpected = true; // Should always work.
REPORTER_ASSERT(reporter,
subset.copyPixelsTo(buf, bufSize,
subset.rowBytes()+1) == successExpected);
if (successExpected)
reportCopyVerification(subset, bufBm, coords,
"copyPixelsTo(buf, bufSize, rowBytes+1)", reporter);
// Test #4 ////////////////////////////////////////////
// Test copy with stride too small.
memset(buf, 0xFF, bufSize);
bufBm.installPixels(info, buf, info.minRowBytes());
successExpected = false;
// Request copy with stride too small.
REPORTER_ASSERT(reporter,
subset.copyPixelsTo(buf, bufSize, bufBm.rowBytes()-1)
== successExpected);
if (successExpected)
reportCopyVerification(subset, bufBm, coords,
"copyPixelsTo(buf, bufSize, rowBytes()-1)", reporter);
#if 0 // copyPixelsFrom is gone
// Test #5 ////////////////////////////////////////////
// Tests the case where the source stride is too small
// for the source configuration.
memset(buf, 0xFF, bufSize);
bufBm.installPixels(info, buf, info.minRowBytes());
writeCoordPixels(bufBm, coords);
REPORTER_ASSERT(reporter,
subset.copyPixelsFrom(buf, bufSize, 1) == false);
// Test #6 ///////////////////////////////////////////
// Tests basic copy from an external buffer to the bitmap.
// If the bitmap is "extracted", this also tests the case
// where the source stride is different from the dest.
// stride.
// We've made the buffer large enough to always succeed.
bufBm.installPixels(info, buf, info.minRowBytes());
writeCoordPixels(bufBm, coords);
REPORTER_ASSERT(reporter,
subset.copyPixelsFrom(buf, bufSize, bufBm.rowBytes()) ==
true);
reportCopyVerification(bufBm, subset, coords,
"copyPixelsFrom(buf, bufSize)",
reporter);
// Test #7 ////////////////////////////////////////////
// Tests the case where the source buffer is too small
// for the transfer.
REPORTER_ASSERT(reporter,
subset.copyPixelsFrom(buf, 1, subset.rowBytes()) ==
false);
#endif
}
} // for (size_t copyCase ...
}
}
