void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
const SkRect* src, const SkRect& dst,
const SkPaint& paint, SkCanvas::SrcRectConstraint constraint) {
SkMatrix matrix;
SkRect bitmapBounds, tmpSrc, tmpDst;
SkBitmap tmpBitmap;
bitmapBounds.isetWH(bitmap.width(), bitmap.height());
// Compute matrix from the two rectangles
if (src) {
tmpSrc = *src;
} else {
tmpSrc = bitmapBounds;
}
matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit);
LogDrawScaleFactor(SkMatrix::Concat(*draw.fMatrix, matrix), paint.getFilterQuality());
const SkRect* dstPtr = &dst;
const SkBitmap* bitmapPtr = &bitmap;
// clip the tmpSrc to the bounds of the bitmap, and recompute dstRect if
// needed (if the src was clipped). No check needed if src==null.
if (src) {
if (!bitmapBounds.contains(*src)) {
if (!tmpSrc.intersect(bitmapBounds)) {
return; // nothing to draw
}
// recompute dst, based on the smaller tmpSrc
matrix.mapRect(&tmpDst, tmpSrc);
dstPtr = &tmpDst;
}
}
if (src && !src->contains(bitmapBounds) &&
SkCanvas::kFast_SrcRectConstraint == constraint &&
paint.getFilterQuality() != kNone_SkFilterQuality) {
// src is smaller than the bounds of the bitmap, and we are filtering, so we don't know
// how much more of the bitmap we need, so we can't use extractSubset or drawBitmap,
// but we must use a shader w/ dst bounds (which can access all of the bitmap needed).
goto USE_SHADER;
}
if (src) {
// since we may need to clamp to the borders of the src rect within
// the bitmap, we extract a subset.
const SkIRect srcIR = tmpSrc.roundOut();
if (!bitmap.extractSubset(&tmpBitmap, srcIR)) {
return;
}
bitmapPtr = &tmpBitmap;
// Since we did an extract, we need to adjust the matrix accordingly
SkScalar dx = 0, dy = 0;
if (srcIR.fLeft > 0) {
dx = SkIntToScalar(srcIR.fLeft);
}
if (srcIR.fTop > 0) {
dy = SkIntToScalar(srcIR.fTop);
}
if (dx || dy) {
matrix.preTranslate(dx, dy);
}
SkRect extractedBitmapBounds;
extractedBitmapBounds.isetWH(bitmapPtr->width(), bitmapPtr->height());
if (extractedBitmapBounds == tmpSrc) {
// no fractional part in src, we can just call drawBitmap
goto USE_DRAWBITMAP;
}
} else {
USE_DRAWBITMAP:
// We can go faster by just calling drawBitmap, which will concat the
// matrix with the CTM, and try to call drawSprite if it can. If not,
// it will make a shader and call drawRect, as we do below.
if (CanApplyDstMatrixAsCTM(matrix, paint)) {
draw.drawBitmap(*bitmapPtr, matrix, dstPtr, paint);
return;
}
}
USE_SHADER:
// Since the shader need only live for our stack-frame, pass in a custom allocator. This
// can save malloc calls, and signals to SkMakeBitmapShader to not try to copy the bitmap
// if its mutable, since that precaution is not needed (give the short lifetime of the shader).
SkTBlitterAllocator allocator;
// construct a shader, so we can call drawRect with the dst
auto s = SkMakeBitmapShader(*bitmapPtr, SkShader::kClamp_TileMode, SkShader::kClamp_TileMode,
&matrix, kNever_SkCopyPixelsMode, &allocator);
if (!s) {
return;
}
// we deliberately add a ref, since the allocator wants to be the last owner
s.get()->ref();
SkPaint paintWithShader(paint);
paintWithShader.setStyle(SkPaint::kFill_Style);
paintWithShader.setShader(s);
// Call ourself, in case the subclass wanted to share this setup code
// but handle the drawRect code themselves.
this->drawRect(draw, *dstPtr, paintWithShader);
}
sk_sp<SkShader> SkShader::MakeBitmapShader(const SkBitmap& src, TileMode tmx, TileMode tmy,
const SkMatrix* localMatrix) {
return SkMakeBitmapShader(src, tmx, tmy, localMatrix, nullptr);
}
DEF_TEST(Serialization, reporter) {
// Test matrix serialization
{
SkMatrix matrix = SkMatrix::I();
TestObjectSerialization(&matrix, reporter);
}
// Test path serialization
{
SkPath path;
TestObjectSerialization(&path, reporter);
}
// Test region serialization
{
SkRegion region;
TestObjectSerialization(®ion, reporter);
}
// Test xfermode serialization
{
TestXfermodeSerialization(reporter);
}
// Test color filter serialization
{
TestColorFilterSerialization(reporter);
}
// Test string serialization
{
SkString string("string");
TestObjectSerializationNoAlign<SkString, false>(&string, reporter);
TestObjectSerializationNoAlign<SkString, true>(&string, reporter);
}
// Test rrect serialization
{
// SkRRect does not initialize anything.
// An uninitialized SkRRect can be serialized,
// but will branch on uninitialized data when deserialized.
SkRRect rrect;
SkRect rect = SkRect::MakeXYWH(1, 2, 20, 30);
SkVector corners[4] = { {1, 2}, {2, 3}, {3,4}, {4,5} };
rrect.setRectRadii(rect, corners);
TestAlignment(&rrect, reporter);
}
// Test readByteArray
{
unsigned char data[kArraySize] = { 1, 2, 3 };
TestArraySerialization(data, reporter);
}
// Test readColorArray
{
SkColor data[kArraySize] = { SK_ColorBLACK, SK_ColorWHITE, SK_ColorRED };
TestArraySerialization(data, reporter);
}
// Test readIntArray
{
int32_t data[kArraySize] = { 1, 2, 4, 8 };
TestArraySerialization(data, reporter);
}
// Test readPointArray
{
SkPoint data[kArraySize] = { {6, 7}, {42, 128} };
TestArraySerialization(data, reporter);
}
// Test readScalarArray
{
SkScalar data[kArraySize] = { SK_Scalar1, SK_ScalarHalf, SK_ScalarMax };
TestArraySerialization(data, reporter);
}
// Test invalid deserializations
{
SkImageInfo info = SkImageInfo::MakeN32Premul(kBitmapSize, kBitmapSize);
SkBitmap validBitmap;
validBitmap.setInfo(info);
// Create a bitmap with a really large height
SkBitmap invalidBitmap;
invalidBitmap.setInfo(info.makeWH(info.width(), 1000000000));
// The deserialization should succeed, and the rendering shouldn't crash,
// even when the device fails to initialize, due to its size
TestBitmapSerialization(validBitmap, invalidBitmap, true, reporter);
}
// Test simple SkPicture serialization
{
SkPictureRecorder recorder;
draw_something(recorder.beginRecording(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize),
nullptr, 0));
sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture());
// Serialize picture
SkBinaryWriteBuffer writer;
pict->flatten(writer);
size_t size = writer.bytesWritten();
SkAutoTMalloc<unsigned char> data(size);
writer.writeToMemory(static_cast<void*>(data.get()));
// Deserialize picture
SkValidatingReadBuffer reader(static_cast<void*>(data.get()), size);
sk_sp<SkPicture> readPict(SkPicture::MakeFromBuffer(reader));
REPORTER_ASSERT(reporter, readPict.get());
}
TestPictureTypefaceSerialization(reporter);
// Test SkLightingShader/NormalMapSource serialization
{
const int kTexSize = 2;
SkLights::Builder builder;
builder.add(SkLights::Light(SkColor3f::Make(1.0f, 1.0f, 1.0f),
SkVector3::Make(1.0f, 0.0f, 0.0f)));
builder.add(SkLights::Light(SkColor3f::Make(0.2f, 0.2f, 0.2f)));
sk_sp<SkLights> fLights = builder.finish();
SkBitmap diffuse = sk_tool_utils::create_checkerboard_bitmap(
kTexSize, kTexSize,
sk_tool_utils::color_to_565(0x0),
sk_tool_utils::color_to_565(0xFF804020),
8);
SkRect bitmapBounds = SkRect::MakeIWH(diffuse.width(), diffuse.height());
SkMatrix matrix;
SkRect r = SkRect::MakeWH(SkIntToScalar(kTexSize), SkIntToScalar(kTexSize));
matrix.setRectToRect(bitmapBounds, r, SkMatrix::kFill_ScaleToFit);
SkMatrix ctm;
ctm.setRotate(45);
SkBitmap normals;
normals.allocN32Pixels(kTexSize, kTexSize);
sk_tool_utils::create_frustum_normal_map(&normals, SkIRect::MakeWH(kTexSize, kTexSize));
sk_sp<SkShader> normalMap = SkMakeBitmapShader(normals, SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode, &matrix, nullptr);
sk_sp<SkNormalSource> normalSource = SkNormalSource::MakeFromNormalMap(std::move(normalMap),
ctm);
sk_sp<SkShader> lightingShader = SkLightingShader::Make(diffuse, fLights, &matrix,
std::move(normalSource));
SkAutoTUnref<SkShader>(TestFlattenableSerialization(lightingShader.get(), true, reporter));
// TODO test equality?
}
}
