[][src]Function ultraviolet::projection::lh_ydown::perspective_reversed_z_vk

pub fn perspective_reversed_z_vk(
    vertical_fov: f32,
    aspect_ratio: f32,
    z_near: f32,
    z_far: f32
) -> Mat4

Perspective projection matrix with reversed z-axis meant to be used with Vulkan.

Reversed-Z provides significantly better precision and therefore reduced z-fighting for most depth situations, especially when a floating-point depth buffer is used. You'll want to use a reversed depth comparison function and depth clear value when using this projection.

  • vertical_fov should be provided in radians.
  • aspect_ratio should be the quotient width / height.

This matrix is meant to be used when the source coordinate space is left-handed and y-down (the standard computer graphics coordinate space) and the destination coordinate space is right-handed and y-down with Z (depth) clip extending from 0.0 (close) to 1.0 (far).