Function ttri 

pub unsafe fn ttri(
    x1: f32,
    y1: f32,
    x2: f32,
    y2: f32,
    x3: f32,
    y3: f32,
    u1: f32,
    v1: f32,
    u2: f32,
    v2: f32,
    u3: f32,
    v3: f32,
    tex_src: i32,
    trans_colors: *const u8,
    color_count: i8,
    z1: f32,
    z2: f32,
    z3: f32,
    depth: bool,
)

Safety:

This is normally an external function that is unsafe