[REQ] non UV texture mapping

William · Post by **William** » Thu May 09, 2013 4:54 pm

Pretty standard feature this (maybe it's already possible), mapping other than UV coordinates, ie object/world/cube/planar/spherical/cylindrical

Object, world and cube mapping are pretty useful.

zeitmeister · Post by **zeitmeister** » Thu May 09, 2013 9:22 pm

What the heck is object mapping?

PureSpider · Post by **PureSpider** » Thu May 09, 2013 11:00 pm

Just have your modeling solution bake stuff like cube mapping to a uvmap?

William · Post by **William** » Thu May 09, 2013 11:16 pm

zeitmeister wrote:What the heck is object mapping?

Okay perhaps my terms a bit messed up, Object mapping can usually suggest using another object for locating the texture.

But what I meant is actually more just like local coordinates or something, (the texture moves with the object), whilst global/world coordinates the texture does not move.

So for example, local coordinates/object (whatever the real name is), global coordinates and then you have the various projection methods - cube/planar/cylindrical etc

PureSpider wrote:Just have your modeling solution bake stuff like cube mapping to a uvmap?

Don't think so, imagine projecting a texture onto a field of instanced grass, impossible with UV mapping, for that you need global coordinates.

PureSpider · Post by **PureSpider** » Thu May 09, 2013 11:59 pm

William wrote:Don't think so, imagine projecting a texture onto a field of instanced grass, impossible with UV mapping, for that you need global coordinates.

Which you can then bake onto the objects in your modeling tool...?

William · Post by **William** » Fri May 10, 2013 12:10 am

No, impossible as I said.

CTZn · Post by **CTZn** » Fri May 10, 2013 12:18 am

It sounds to me that you are looking after ISL, the Indigo Shading Language.

You can script the projection you want. But it's not artist friendly.

Zom-B · Post by **Zom-B** » Mon May 13, 2013 9:31 am

William wrote:Pretty standard feature this (maybe it's already possible), mapping other than UV coordinates, ie object/world/cube/planar/spherical/cylindrical

Object, world and cube mapping are pretty useful.

Is that a request for the Indigo GUI only? Since atm the mapping style from your 3D app gets simply transformed to uvm on export.

But nerveless, different mapping styles would be quite nice in the GUI. The most interesting style I know is box mapping with some blended traditions of the texture on the corner.... well... I just start a new REQ thread about that ^^

Phil · Post by **Phil** » Wed May 15, 2013 4:48 am

Hi,

I would also be pleased to see such a feature in Indigo especially planar mapping, this is something I missed from POV-Ray.
This should not only be availabel in the GUI.
The reason is, I could automated the process of texture mapping for about 80% what I need.

Cheers,
Phil

Post by **OnoSendai** » Wed May 15, 2013 5:32 am

Hi, since this has been requested quite a bit, we will try and make time to look at it after 3.6.

zeitmeister · Post by **zeitmeister** » Wed May 15, 2013 8:16 am

Cool!
This could speed up the export progress, too.

William · Post by **William** » Wed May 15, 2013 3:36 pm

Great!

StompinTom · Post by **StompinTom** » Wed May 15, 2013 11:23 pm

PureSpider wrote:
William wrote:Don't think so, imagine projecting a texture onto a field of instanced grass, impossible with UV mapping, for that you need global coordinates.
Which you can then bake onto the objects in your modeling tool...?

Your instances use the same UV map, so once you bake one, you bake them all, so it doesn't work. You'll end up with a field of uniform color instead of the textured variety.

I suppose one workaround would be to have the UV map of the emitter object dictate the color of the instance (is it possible through an ISL shader to refer to use another object's UV coordinates?).

I suppose the grass shader would have to compare the position of each blade to the UV coordinates of the surface it's sitting on and derive its color like so...

Rambling now, but would something like this be possible with the scattering shader? Would love support for scattering in Blendigo.

Anyway, big +1 for other mapping types. Can save loads of time for complex or numerous objects. Simple box or global mapping simplifies texturing unimportant objects.