C++ (Cpp) SkBlendMode Examples

Example #1

File: RecordingXfermodeTest.cpp Project: android/platform_external_skia

DEF_TEST(SkRecordingAccuracyXfermode, reporter) {
#define FINEGRAIN 0
    const Drawer drawer;

    BitmapBackedCanvasStrategy golden(drawer.imageInfo());
    PictureStrategy picture(drawer.imageInfo());

#if !FINEGRAIN
    unsigned numErrors = 0;
    SkString errors;
#endif

    for (int iMode = 0; iMode < int(SkBlendMode::kLastMode); iMode++) {
        const SkRect& clip = SkRect::MakeXYWH(100, 0, 100, 100);
        SkBlendMode mode = SkBlendMode(iMode);

        const SkBitmap& goldenBM = golden.recordAndReplay(drawer, clip, mode);
        const SkBitmap& pictureBM = picture.recordAndReplay(drawer, clip, mode);

        size_t pixelsSize = goldenBM.computeByteSize();
        REPORTER_ASSERT(reporter, pixelsSize == pictureBM.computeByteSize());

        // The pixel arrays should match.
#if FINEGRAIN
        REPORTER_ASSERT(reporter,
                        0 == memcmp(goldenBM.getPixels(), pictureBM.getPixels(), pixelsSize));
#else
        if (memcmp(goldenBM.getPixels(), pictureBM.getPixels(), pixelsSize)) {
            numErrors++;
            errors.appendf("For SkXfermode %d %s:    SkPictureRecorder bitmap is wrong\n",
                           iMode, SkBlendMode_Name(mode));
        }
#endif
    }

#if !FINEGRAIN
    REPORTER_ASSERT(reporter, 0 == numErrors, errors.c_str());
#endif
}

Example #2

File: GrPorterDuffXferProcessor.cpp Project: aseprite/skia

sk_sp<GrXPFactory> GrPorterDuffXPFactory::TestCreate(GrProcessorTestData* d) {
    SkBlendMode mode = SkBlendMode(d->fRandom->nextULessThan((int)SkBlendMode::kLastCoeffMode));
    return GrPorterDuffXPFactory::Make(mode);
}