Constant libktx_rs_sys::ktx_transcode_fmt_e_KTX_TTF_PVRTC2_4_RGB

pub const ktx_transcode_fmt_e_KTX_TTF_PVRTC2_4_RGB: ktx_transcode_fmt_e = 18;

ATC and FXT1 formats are not supported by KTX2 as there are no equivalent VkFormats.