Struct SsrParams 

#[repr(C)]
pub struct SsrParams {
    pub intensity: f32,
    pub max_distance: f32,
    pub tan_half_fov_y: f32,
    pub aspect: f32,
    pub stride: f32,
    pub thickness: f32,
    pub prefilter_mip_count: f32,
    pub _pad: f32,
    pub inv_view: [[f32; 4]; 4],
    pub sky_rot: [[f32; 4]; 3],
}

Per-frame uniform for the screen-space reflection (SSR) ray-march. Carries the clamped authored tunables, the view-ray scale the resolve pass uses to project a view-space ray point back to a screen UV, and the data the resolve needs to sample the IBL prefilter cubemap as a fallback. Pushed verbatim to the SSR resolve fragment shader, so the layout must stay in sync with the SsrParams struct there. 144 bytes.

Fields

intensity: f32

Reflection blend strength in [0, 1]; scales the Fresnel-weighted mix.

max_distance: f32

Maximum world-space distance a reflection ray marches before giving up.

tan_half_fov_y: f32

tan(fov_y / 2): the vertical view-ray half-extent at unit depth.

aspect: f32

Viewport aspect ratio (width / height).

stride: f32

World-space length of one ray-march step.

thickness: f32

View-space depth tolerance for accepting a ray/scene-depth intersection.

prefilter_mip_count: f32

IBL prefilter cubemap mip count. 0 when no EnvironmentMap is bound: the resolve then skips the cube fallback and keeps the base shading instead.

_pad: f32

Padding so the field layout matches the shader-side struct.

inv_view: [[f32; 4]; 4]

Camera-to-world transform (column-major, the rigid inverse of the view matrix): the orthonormal 3x3 turns a view-space reflection ray into the world-space direction the cubemap is sampled with, and the translation column (the world camera position) lets the resolve rebuild the world-space surface position a reflection probe box-projects against. Backends that only sample the cube use the 3x3 (the r_world direction) and ignore translation.

sky_rot: [[f32; 4]; 3]

Rows of the rotation taking a world-space direction into the environment cubemap’s baked frame, mirroring ViewUniforms.sky_rot so the resolve’s sky fallback turns with the main pass. One float4 per row; w unused.

Trait Implementations

impl Clone for SsrParams

fn clone(&self) -> SsrParams

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SsrParams

impl Debug for SsrParams

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl NoUninit for SsrParams