Namespace Mat4x4

4x4 Matrix operations using column-major order (WebGPU standard).

Matrix Layout: Matrices are stored in column-major order as flat arrays of 16 elements. This matches WebGPU's memory layout and shader expectations.

Layout: [m0, m1, m2, m3, m4, m5, m6, m7, m8, m9, m10, m11, m12, m13, m14, m15]

Which represents: ┌ ┐ │ m0 m4 m8 m12 │ (Column 0, 1, 2, 3) │ m1 m5 m9 m13 │ │ m2 m6 m10 m14 │ │ m3 m7 m11 m15 │ └ ┘

For transformation matrices (position, rotation, scale):

• Columns 0-2 (m0-m2, m4-m6, m8-m10): Rotation/scale basis vectors (right, up, forward)
• Column 3 (m12, m13, m14): Translation (x, y, z)
• Row 3 (m3, m7, m11, m15): Perspective (usually 0, 0, 0, 1)