Struct FrameInput 

pub struct FrameInput {
    pub cam: Camera2d,
    pub world_size: [f32; 2],
    pub viewport_px: [f32; 2],
    pub sprites: Vec<SpriteInstance>,
    pub texts: Vec<WorldText>,
    pub background: Option<[f32; 4]>,
    pub overlay_color: Option<[f32; 4]>,
    pub chroma: f32,
}

Everything the viewport draws this frame. Plain data, snapshot per frame.

Framing contract (single source of truth): canvas, GPU, and picks all derive from world_size + cam through effective_fit / fit_view_proj / world_to_dp. cam.effective_center() is the look point (rest + offset shake included); cam.zoom / cam.units_per_pixel scale the fit uniformly on every backend.

Fields

cam: Camera2d

world_size: [f32; 2]

World-space extent the contain-fit maps into the viewport.

viewport_px: [f32; 2]

Cold-start viewport size in dp (physical px / density), used for the GPU camera until the first painted FrameGeom arrives. Must be dp, not physical px, or the first frame’s fit is off by the density factor on HiDPI screens.

sprites: Vec<SpriteInstance>

texts: Vec<WorldText>

World-anchored text, drawn after the sprite pass.

background: Option<[f32; 4]>

Full-viewport fill under everything (letterbox included).

overlay_color: Option<[f32; 4]>

Optional fullscreen tint/color-grading hook (e.g. FOW dimming, damage flash). Applied after the sprite pass.

chroma: f32

Chromatic aberration amount (bevy chromatic_intensity units; NT pulses land at 0.04..0.7). GPU viewports render the scene offscreen and composite it back with an RGB split; 0.0 keeps the zero-cost direct path. Canvas viewports ignore it (sampling FX need pixels, and the canvas path is vector commands).

Trait Implementations

impl Clone for FrameInput

fn clone(&self) -> FrameInput

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FrameInput

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

Formats the value using the given formatter.

impl Default for FrameInput

fn default() -> FrameInput

Returns the “default value” for a type.