Struct ViewUniforms 

#[repr(C)]
pub struct ViewUniforms {
    pub vp: [[f32; 4]; 4],
    pub view: [[f32; 4]; 4],
    pub elapsed: f32,
    pub reflections_enabled: f32,
    pub cam_pos: [f32; 3],
    pub prefilter_mip_count: f32,
    pub shade_mode: f32,
    pub _end_pad: f32,
    pub sky_rot: [[f32; 4]; 3],
}

Per-frame view-projection uniforms, uploaded once per frame and shared across every draw in it. view is the standalone view matrix the vertex shader uses to compute view-space depth for cascade selection in the fragment shader.

The .slang source declares the same bytes with its own spelling (view_mat, and cam_x/cam_y/cam_z in place of cam_pos), which is why the two are checked as byte ranges rather than by name.

Fields

vp: [[f32; 4]; 4]

Combined view-projection matrix (column-major).

view: [[f32; 4]; 4]

Camera view matrix (column-major). Used to compute view-space depth in the vertex shader for shadow cascade selection.

elapsed: f32

Elapsed seconds, available to shaders for animation.

reflections_enabled: f32

1.0 when a screen-space / ray-traced reflection resolve composites this frame, else 0.0. The forward fragment shader uses it to yield the sharp specular for glossy surfaces to that resolve (whose miss-fallback samples the same probe set), so a glossy surface does not show both the parallax-approximate forward probe reflection and the exact resolved one.

cam_pos: [f32; 3]

World-space camera position (packed_float3 in the MSL contract, alignment 4).

prefilter_mip_count: f32

Number of mip levels in the bound IBL prefilter cubemap. 0 means “no EnvironmentMap bound”: the fragment shader uses this as the IBL enable flag and falls back to a flat ambient placeholder.

shade_mode: f32

1.0 while the unlit view mode is active: shade_surface returns the base color before lighting. Occupies what was pad space, so the offsets in the user-shader binding contract are unchanged.

_end_pad: f32

End-padding: the shader rounds the block up to a multiple of float4x4’s 16-byte alignment, so the upload rounds explicitly to match.

sky_rot: [[f32; 4]; 3]

Rows of the rotation that takes a world-space direction into the environment cubemaps’ baked frame: the inverse of the sky’s current rotation (SkyOrientation::sample_rows), identity when the world declares no SkyRotation. Every cubemap sample helper applies it, so the sky, the ambient fill and the glossy reflections turn together. One float4 per row; w is unused.

Trait Implementations

impl Clone for ViewUniforms

fn clone(&self) -> ViewUniforms

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ViewUniforms

impl NoUninit for ViewUniforms