C++ (Cpp) SkAutoPixmapStorage::erase Examples

Example #1

File: SpecialImageTest.cpp Project: C-Tillion/skia

DEF_TEST(SpecialImage_Pixmap, reporter) {
    SkAutoPixmapStorage pixmap;

    const SkImageInfo info = SkImageInfo::MakeN32(kFullSize, kFullSize, kOpaque_SkAlphaType);
    pixmap.alloc(info);
    pixmap.erase(SK_ColorGREEN);

    const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

    pixmap.erase(SK_ColorRED, subset);

    {
        sk_sp<SkSpecialImage> img(SkSpecialImage::MakeFromPixmap(subset, pixmap,
                                                                 nullptr, nullptr));
        test_image(img, reporter, nullptr, false, kPad, kFullSize);
    }
}

Example #2

File: Float16Test.cpp Project: aseprite/skia

DEF_TEST(color_half_float, reporter) {
    const int w = 100;
    const int h = 100;

    SkImageInfo info = SkImageInfo::Make(w, h, kRGBA_F16_SkColorType, kPremul_SkAlphaType);

    SkAutoPixmapStorage pm;
    pm.alloc(info);
    REPORTER_ASSERT(reporter, pm.getSafeSize() == SkToSizeT(w * h * sizeof(uint64_t)));

    SkColor4f c4 { 1, 0.5f, 0.25f, 0.5f };
    pm.erase(c4);

    SkPM4f origpm4 = c4.premul();
    for (int y = 0; y < pm.height(); ++y) {
        for (int x = 0; x < pm.width(); ++x) {
            SkPM4f pm4 = SkPM4f::FromF16(pm.addrF16(x, y));
            REPORTER_ASSERT(reporter, eq_within_half_float(origpm4, pm4));
        }
    }
}