Function create_uniform_mask_png

tests/EffectMask.cpp:61–67

}

static std::string create_uniform_mask_png(int width, int height, int gray_value) {
	const std::string path = temp_png_path("mask_uniform");
	QImage mask(width, height, QImage::Format_RGBA8888_Premultiplied);
	mask.fill(QColor(gray_value, gray_value, gray_value, 255));
	REQUIRE(mask.save(QString::fromStdString(path)));
	return path;
}

class TrackingMaskReader : public ReaderBase {
private: