Struct CameraFrame 

#[non_exhaustive]
pub struct CameraFrame {
    pub render_camera: RenderCamera,
    pub viewport_size: [f32; 2],
    pub pixels_per_point: f32,
    pub viewport_index: usize,
}

Camera submission state for one frame.

Groups the canonical render camera with viewport sizing and multi-viewport slot index. This is the single owner of all camera-derived state submitted to the renderer each frame.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

render_camera: RenderCamera

Canonical renderer-facing camera state.

viewport_size: [f32; 2]

Viewport size in logical pixels (egui points) (width, height). Default: [800.0, 600.0].

pixels_per_point: f32

Physical pixels per logical pixel. Set from the window or egui context (e.g. ui.ctx().pixels_per_point()). Default: 1.0.

The renderer uses this only for GPU texture allocation. All screen-space math (projection, picking, widget layout) uses viewport_size directly.

viewport_index: usize

Multi-viewport slot index. Default: 0 (single-viewport mode).

Implementations

impl CameraFrame

pub fn new(render_camera: RenderCamera, viewport_size: [f32; 2]) -> Self

Build a camera frame from a render camera and viewport size.

pub fn from_camera(cam: &Camera, viewport_size: [f32; 2]) -> Self

Build a camera frame from an app-side camera and viewport size.

pub fn with_pixels_per_point(self, pixels_per_point: f32) -> Self

Set the physical pixels per logical pixel for this camera frame.

Pass ui.ctx().pixels_per_point() from egui, or the equivalent scale factor from your window system. Only affects GPU texture allocation; all screen-space math continues to use viewport_size.

pub fn with_viewport_index(self, viewport_index: usize) -> Self

Set the multi-viewport slot index for this camera frame.

Trait Implementations

impl Default for CameraFrame

fn default() -> Self

Returns the “default value” for a type.