Using shaders to compute lighting?

[Whatthefuck]

I dont' think that GLSL accepts tables that have more than 4 indexes (vec4)

I see, thank you.
Well, regardless, the lighting compute is fast as it is, so this shouldn't be a problem anyway.

Thanks for the answers, everyone.

[Ref]

Probably way off base but is this anywhere close to what you want?

[slime]

I dont' think that GLSL accepts tables that have more than 4 indexes (vec4)

You can have arrays (even arrays of vec4's) via shader:send("arrayname", element1, element2, ...) where element1 can be a table if it's a vector in GLSL, or a number if it's just a float in GLSL.

There is a driver/GPU-specific limit to the number of extern/uniform values per shader though.

[Whatthefuck]

Probably way off base but is this anywhere close to what you want?

No, what I want to do is compute static world lighting, but since it isn't exactly possible because I'd have to send a table containing 256 indexes, I'll just stick to what I have coded so far.

The shader you showed could be useful for torches and other dynamic light sources though.