Function wasm_ctx_framebuffer_texture2d 

#[unsafe(no_mangle)]
pub extern "C" fn wasm_ctx_framebuffer_texture2d(
    ctx: u32,
    target: u32,
    attachment: u32,
    textarget: u32,
    tex: u32,
    level: i32,
) -> u32

Attach a texture to the bound framebuffer. Returns errno.