Function build_sprite_uniform 

pub fn build_sprite_uniform(
    x: f32,
    y: f32,
    sx: f32,
    sy: f32,
    rot: f32,
    rgba: [f32; 4],
    texture_w: u32,
    texture_h: u32,
    render_w: u32,
    render_h: u32,
) -> SpriteUniform

Build a SpriteUniform from raw engine-side numbers + texture dimensions + render aspect ratio. Pulled out so the renderer’s update_sprites step can produce a single contiguous list of uniforms for upload + the matching draw-cmd list without recomputing aspect ratios per call.