Function get_e

utility/image_saver.cpp:471–473

	return (uint8_t)((rgbe >> 19) & 0xFF);
}
constexpr uint8_t get_e(uint32_t rgbe) {
	return (uint8_t)(((rgbe >> 27) - 15 + 128) & 0xFF);
}

Vector<uint8_t> save_hdr_buffer(const Ref<Image> &p_img, bool duplicate) {
	ERR_FAIL_COND_V_MSG(p_img.is_null(), Vector<uint8_t>(), "Can't save invalid image as HDR.");