Function prepare_camera 

fn prepare_camera(
    ctx: Res<'_, WgpuContext>,
    dimensions: Res<'_, RenderDimensions>,
    cameras: Query<'_, '_, (&SceneOrder, &CameraFrame)>,
    orders: Query<'_, '_, &SceneOrder>,
    viewport: ResMut<'_, ViewportGpuPacket>,
)

Available on crate feature render only.