Inverting Sunlight Direction

[Notunknown]

I am planning on making a mod set in a new dimension. Only it requires one rather unusual property in order to implement correctly:

 

Sunlight needs to start at 0 and travel upwards, towards the bedrock ceiling at 255 (rather than starting at 255 and travelling downwards towards the bedrock floor at 0).

 

Now, I do have an idea for an alternative, but it does require applying the "upside down" shader and somehow making players fall upwards, render upside down and have their eye level near the floor, which I am not quite sure if it is a good ideal

[Draco18s]

You need to write your own sky renderer.  Shouldn't be very hard.

You'll also want to turn off void fog.

[Draco18s]

The upside down shader is his hack around doing it the right way.

He wants to h have a dimension that would be like digging around on the underside of a floating island, with the sun below him.