New "band" texture

[jeanphi]

Hi,

I've just pushed a new band texture to enable complex gradients. It is currently available as a color or a float texture.
The parameters are:
- "float amount" texturable parameter to select inside the gradient (equivalent to the mix amount)
- "float offsets" float list defining reference points for the gradient in the (0-1) range, in ascending order
- "texture tex*" where * is the index of the corresponding reference point in the above list (eg tex1, tex2), it is the gradient value at the reference point

I just realized that "tex*" parameters are numbered starting from 0 instead of 1 which is inconsistent with the current numbering schemes in the SDL, and I also forgot to check that offsets are in ascending order, so I'll probably push an update soon to fix those 2 issues. Please report if you find something else.

Jeanphi

[jeanphi]

Hi,

I just made the announced tweaks (numbering from 1 instead of 0 and check for offsets in ascending order).

Jeanphi

[Carbonflux]

This is going to be a very useful imo, thank you, I look forward to testing it

[neo2068]

Could you give a simple example? I don't get it working (material is black). This is what I did. But the texture parameter seems to be wrong. ('Parameter tex* not used' in log output)

Code: Select all

Texture "Tex1" "color" "constant" "color value" [0.700000 0.000000 0.000000]
Texture "Tex2" "color" "constant" "color value" [0.000000 0.700000 0.000000]
Texture "Tex3" "color" "constant" "color value" [0.000000 0.000000 0.700000]

Texture "Band::Kd" "color" "band"
   "float amount" [0.25]
   "float offsets" [0.0 0.5 1.0]
   "texture tex1" ["Tex1"]
   "texture tex2" ["Tex2"]
   "texture tex3" ["Tex3"]

MakeNamedMaterial "Band"
   "string type" ["matte"]
   "texture Kd" ["Band::Kd"


[jeanphi]

Hi,

Yes, I've spotted it too, a fix is now available.

Jeanphi

[neo2068]

Thanks, now it works.

[jeanphi]

Hi,

Just a quick test of the new texture, color is controled by a "band" texture, transparency is controled by another "band" texture.

band test

luxblend-preview.jpg (13.8 KiB) Viewed 890 times

Jeanphi

[tomb]

That's a really, *really* nice type of texture! I can't wait to see what people do with it

[neo2068]

I did a first test to create a complex wood texture.

[SATtva]

Christ! That is awesome!