proc draw_all(self: RenderManager) {....raises: [Exception], tags: [RootEffect].}

proc draw_background(self: RenderManager; scene: Scene;
                     cam_data: RenderCameraData) {.
    ...raises: [Exception, ValueError], tags: [RootEffect].}

proc draw_cubemap(self: RenderManager; scene: Scene; cubemap_fb: Framebuffer;
                  cube2world, world2cube: Mat4; near, far: float32;
                  background_only: bool) {....raises: [Exception, ValueError],
    tags: [RootEffect].}

proc draw_mesh(self: RenderManager; mesh: Mesh; mesh2world: Mat4;
               cam_data: RenderCameraData; pass: int = -1;
               material_override: Material = nil) {.
    ...raises: [Exception, ValueError], tags: [RootEffect].}

proc draw_quad(self: RenderManager; material: Material; scene: Scene;
               cam_data: RenderCameraData) {....raises: [Exception, ValueError],
    tags: [RootEffect].}

proc draw_viewport(self: RenderManager; viewport: Viewport;
                   rect: (int32, int32, int32, int32); dest_buffer: Framebuffer;
                   passes: seq[int]) {....raises: [Exception, ValueError],
                                       tags: [RootEffect].}

proc get_render_uniform_blocks(): string {....raises: [], tags: [].}

proc initialize(self: RenderManager) {....raises: [Exception, ValueError],
                                       tags: [RootEffect].}

func newRenderCameraData(world_matrix, proj_matrix: Mat4;
                         cull_planes: array[6, Vec4]; viewport_size: Vec2): RenderCameraData {.
    ...raises: [Exception], tags: [RootEffect].}

proc newRenderManager(engine: MyouEngine): RenderManager {....raises: [], tags: [].}

proc set_premultiplied_alpha(use_premultipied: bool) {....raises: [Exception],
    tags: [RootEffect].}

proc uninitialize(self: RenderManager) {....raises: [Exception], tags: [RootEffect].}

func updateCullPlanes(self: var RenderCameraData; cull_planes: array[6, Vec4]) {.
    ...raises: [], tags: [].}