Function mat4_mul_vec4

native/shared/src/renderer/util.rs:85–92

Multiply a column-major 4x4 matrix by a column vector.

(m: &[[f32; 4]; 4], v: &[f32; 4])

/// Multiply a column-major 4x4 matrix by a column vector.
pub fn mat4_mul_vec4(m: &[[f32; 4]; 4], v: &[f32; 4]) -> [f32; 4] {
    [
        m[0][0]*v[0] + m[1][0]*v[1] + m[2][0]*v[2] + m[3][0]*v[3],
        m[0][1]*v[0] + m[1][1]*v[1] + m[2][1]*v[2] + m[3][1]*v[3],
        m[0][2]*v[0] + m[1][2]*v[1] + m[2][2]*v[2] + m[3][2]*v[3],
        m[0][3]*v[0] + m[1][3]*v[1] + m[2][3]*v[2] + m[3][3]*v[3],
    ]
}

pub fn mat4_translate(m: [[f32; 4]; 4], v: [f32; 3]) -> [[f32; 4]; 4] {
    let mut out = m;