[bug][0.4.*] Slab lightning problem

[Fixer]

I've noticed that whole block and slab block have different lightning on them, look at the screenshot (this problem is evident on default and custom slabs), whole blocks are closer, slabs are farther. Also, probably the same problem with stairs.

MT 0.4.13, 64 bit msvc, Win 7 64bit, i3-2120, ATI HD6870

[PilzAdam]

I remember that there were problems with this a while ago. The light is applied before the mesh is rotated.

[Sokomine]

Nodeboxes/meshes always looked diffrent in that regard compared to full blocks. It can be used for nice effects and allows for indirect lighting. Just place a light source somewhere and put a slab or something like that in front/on top. It can create very nice patterns and effects.

[Fixer]

Added a poll for people with this bug, to specify their setup, vote! Developers need that info

[Ferk]

I'd have guessed this wouldn't have much to do with what drivers you have, since Minetest doesn't use dynamic lighting or any fancy hardware lightining features from the graphic card. The poll wouldn't be very useful.

Btw, last time I checked there was simply no smooth lighting implemented for nodeboxes. Isn't this also the case for slabs and stairs? I'm surprised there's a lighting gradient.

[Don]

I am working on a mod that checks for lighting. If lighting is 15 then particles are spawned. It works fine except if I am standing on a nodebox. The lighting on a slab is too low to spawn a particle.

[Fixer]

Added github issue here: https://github.com/minetest/minetest/issues/3735... and it is duplicate of another issue posted long ago.

[kaadmy]

@Fixerol: afaik this issue has noting to do with the driver, it's the way Minetest currently calculates lighting, and if you disable smooth lighting, everything looks the same as the slab "bug".

Edit: And of course this bug is only in MT 0.4.*, <0.4 didn't have nodeboxes...