How to get smooth environment maps ala NFSU2

glenneaux · Post by **glenneaux** » Wed May 18, 2005 1:03 am

hey,

I have an artist trying to make and environment map a car aiming for similar results as achieved in NFSU2 but we haven't been able to reach that goal.

The material definition for the environment map is:

material 2___Default
{
technique
{
pass
{
cull_hardware none
ambient 0.619608 0.619608 0.619608 1
diffuse 0.619608 0.619608 0.619608 0
specular 0.1 0.1 0.1 1 0

texture_unit
{
cubic_texture cube.dds combinedUVW
env_map cubic_reflection
tex_coord_set 2
colour_op add

}
}
}
}

What are we missing here?

Post by **sinbad** » Wed May 18, 2005 5:33 pm

As you can see from the Demo_Cubemap sample, it's entirely possible to get nice smooth cubic reflections in ogre. Perhaps your model doesn't have enough tesselation (you need smoothly changing normals to make the reflection smooth), or maybe the normals are screwy. The other thing to beware of is using any scaling on the node the entity is attached to.

Lioric · Post by **Lioric** » Wed May 18, 2005 5:42 pm

Looks like there is some normals problem, and too low poly resolution, or probably is just the screenshot

Lioric

glenneaux · Post by **glenneaux** » Mon Jul 04, 2005 3:29 am

Post by **jacmoe** » Mon Jul 04, 2005 3:38 am

sinbad wrote:Perhaps your model doesn't have enough tesselation (you need smoothly changing normals to make the reflection smooth), or maybe the normals are screwy.

Any comments?

RoundSparrow · Post by **RoundSparrow** » Wed Jul 06, 2005 6:11 pm

Suggestion is to post your original model file and/or mesh file ... see if someone will look at it.

Rixeh · Post by **Rixeh** » Thu Jul 07, 2005 12:57 am

Owch that model just screams "NORMAL MAP ME PLEASE"

Sindwiller · Post by **Sindwiller** » Thu Jul 07, 2005 1:58 pm

Rixeh wrote:Owch that model just screams "NORMAL MAP ME PLEASE"

http://developer.nvidia.com/object/melody_home.html

mfg, Sindwiller

glenneaux · Post by **glenneaux** » Mon Sep 05, 2005 7:32 am

bump

j/k

sgrgc · Post by **sgrgc** » Mon Sep 05, 2005 11:43 am

http://graphics.cs.uiuc.edu/~garland/software.html
this is the origin of melody
and you may look here
http://graphics.cs.uiuc.edu/~zelinka/software.html