Orgnaization & cleanup

draw/shapes.odin

@@ -53,7 +53,8 @@ emit_rectangle :: proc(x, y, width, height: f32, color: Color, vertices: []Verte
 }
 
 // Internal — submit an SDF primitive with optional texture binding.
-// Replaces the old prepare_sdf_primitive and prepare_sdf_primitive_textured.
+// The texture-aware counterpart of `draw.prepare_sdf_primitive`; lets shape procs route a
+// texture_id and sampler into the sub-batch without growing the public API.
 @(private)
 prepare_sdf_primitive_ex :: proc(
 	layer: ^Layer,