Function prepare_post_processing_uniforms

pub fn prepare_post_processing_uniforms(
    commands: Commands<'_, '_>,
    post_processing_uniform_buffers: ResMut<'_, PostProcessingUniformBuffers>,
    render_device: Res<'_, RenderDevice>,
    render_queue: Res<'_, RenderQueue>,
    views: Query<'_, '_, (Entity, &ChromaticAberration)>,
)

Gathers the built-in postprocessing settings for every view and uploads them to the GPU.