[fixed]Tangent woes 1.6 (1.52?)

PI · Post by PI » Thu Dec 17, 2009 12:59 pm

First of all, thanks for the maintenance release!

Just one question:

"Normals handling fixed in createMeshWithTangents, existing normals are not always destroyed now."

Does it mean that I can have smoothed normals/tangents now? Currently (in 1.6) when I load up a model and create a mesh of it with tangents, even if I have smoothed the normals previously (angle weighted option screws it up totally!) and the geometry is also welded, it will generate flat surfaces (you can see the edges, not only the edges of the model). You can see this in the ParallaxMapping demo of Irrlicht as well.

Image:

Cheers,
PI

hybrid · Post by **hybrid** » Thu Dec 17, 2009 2:51 pm

Yes, that problem should be fixed now. I'm not sure if it's part of 1.5.2, though, but probably in 1.6.1

PI · Post by PI » Thu Dec 17, 2009 3:31 pm

Okay, thanks!

Mel · Post by **Mel** » Thu Dec 17, 2009 7:40 pm

So now what are the semantics to use when doing normal mapping?

PI · Post by PI » Thu Dec 17, 2009 9:06 pm

What do you mean?

Mel · Post by **Mel** » Fri Dec 18, 2009 2:01 am

In shader programming, a semantic is the data you tell the graphics card to provide to the shader program. The semantics can be many, and they involve data you need to render, namely vertex Position, Normal, Tangent, Binormal, Weights, Bone Index... etc.

In the shader, you must declare what semantics are you going to use, (POSITION0 for the vertex position, NORMAL0 for the normal, TANGENT0 for the tangent data and so on)

So, what i am asking is what of these Semantics are now in effect, to use them in the shaders.

BlindSide · Post by **BlindSide** » Fri Dec 18, 2009 2:54 am

Mel wrote:So now what are the semantics to use when doing normal mapping?

It's the same as before, this topic is unrelated to which semantics are used (TEXCOORD1 and TEXCOORD2).