ShaderLib2D.md

@@ -16,6 +16,8 @@ canvas.add_data(verts, colors, indices)
 geom = canvas.compile()
 
 # then you can pass all shapes in one go to the batch draw.
+# -- importing the appropriate `batch_from_shader` and `gpu` too.  (not shown here)
+shader = gpu.shader.from_builtin('2D_SMOOTH_COLOR')
 batch = batch_for_shader(shader, 'TRIS', {"pos": geom.vectors, "color": geom.vertex_colors}, indices=geom.indices)
 batch.draw(shader)
 ```