Change Layout coord by Sprite XY

I need to use Sprite coordinates instead of Layout/Layer ones for this Auto generate normal Map, Somebody can do it? Gigatron ?

drive.google.com/file/d/1JbEA1nGIAUAgsxY_is_1jcjc8676MQw2/view

So, the idea is that i not need to pass constantly rhe sx/sy/dx/dy to the shader, just one time to tell where is the light in the sprite, due i will use the sprite itself as the light and render the textures inside.