bool SkPixmap::erase(const SkColor4f& origColor, const SkIRect* subset) const {
SkPixmap pm;
if (subset) {
if (!this->extractSubset(&pm, *subset)) {
return false;
}
} else {
pm = *this;
}
const SkColor4f color = origColor.pin();
if (kRGBA_F16_SkColorType != pm.colorType()) {
Sk4f c4 = Sk4f::Load(color.vec());
SkColor c;
(c4 * Sk4f(255) + Sk4f(0.5f)).store(&c);
return pm.erase(c);
}
const uint64_t half4 = color.premul().toF16();
for (int y = 0; y < pm.height(); ++y) {
sk_memset64(pm.writable_addr64(0, y), half4, pm.width());
}
return true;
}
sk_sp<SkShader> SkShader::MakeColorShader(const SkColor4f& color, sk_sp<SkColorSpace> space) {
if (!SkScalarsAreFinite(color.vec(), 4)) {
return nullptr;
}
return sk_make_sp<SkColor4Shader>(color, std::move(space));
}
SkColor4f SkColor4f::FromColor(SkColor bgra) {
SkColor4f rgba;
swizzle_rb(Sk4f_fromS32(bgra)).store(rgba.vec());
return rgba;
}