Constant libjxl_sys::JXL_ENC_FRAME_SETTING_KEEP_INVISIBLE

pub const JXL_ENC_FRAME_SETTING_KEEP_INVISIBLE: JxlEncoderFrameSettingId = 12;

Enables or disables preserving color of invisible pixels. Use -1 for the default (1 if lossless, 0 if lossy), 0 to disable, 1 to enable.