Here is my problem, I have a landscape that was created through photogrametry. It already have strong shadows on it’s diffuse texture so I don’t want it to be affected by my virtual sun. What I do want though is for objects added in my scene to receive shadows cast by the landscape, and for the objects to cast shadows onto the landscape. To do that I matched my virtual sun as close as I could with the shadows on the diffuse texture of the landscape. How do I keep my landscape unlit yet able to receive and cast shadows from and to other objects?
How do I keep my landscape from being lit by the sun yet still cast shadows onto objects but not onto itself? Ideally I want the landscape to react to other lights in my scene, I only have a problem with the sun.