displacement mapping

[dreamhead]

is there a shader for leadwerks that does displacement mapping,so yes how do i add in the mat file?

 

thx in advance

[Canardia]

I've seen PoM and Parallax shaders in LE, not sure how to use them or how to make textures for them. I believe both are special versions of a displacement shader.

[dreamhead]

i have used the Parallax shaders,but get a real wierd result

it was like the shadow was moving with my camera of my objecht

 

Mat file

 

texture0="abstract::BrickRound_D.dds"
texture1="abstract::BrickRound_Disp.dds"

shader="abstract::mesh_diffuse_bumpmap_parallax.vert","abstract::mesh_diffuse_bumpmap_parallax.frag"
shadowshader="abstract::mesh_shadow.vert"

[Canardia]

You might have had the Y axis upside down in the texture. In LE you need to invert the green color, since most programs do it upside down.

[macklebee]

try using this and see if you get better results:

 

texture0="abstract::BrickRound_D.dds"
clamp0=0,0,0
texture1="abstract::BrickRound_Disp.dds"
clamp1=0,0,0
blend=0
depthmask=1
depthtest=1
overlay=0
zsort=0
cullface=1
castshadows=1
specular=0.100000001
bumpscale=1.00000000
gloss=0.100000001
shader="abstract::mesh_diffuse_bumpmap_parallax.vert","abstract::mesh_diffuse_bumpmap_specular_pom.frag"
shadowshader="abstract::mesh_shadow.vert",""

[BrokenPillar]

I think you have to save the parallax map into the alpha of the diffuse texture if you are using the "mesh_diffuse_bumpmap_specular_pom.frag" shader that Macklebee posted.

 

If you are using the "mesh_diffuse_bumpmap_parallax.frag" shader you originally had you need a normal map assigned to texture1, and your displacement map would need to be assigned to texture2 in your mat file, like this:

 

texture0="abstract::BrickRound_D.dds"
texture1="abstract::BrickRound_Dot3.dds"
texture2="abstract::BrickRound_Disp.dds"

shader="abstract::mesh_diffuse_bumpmap_parallax.vert","abstract::mesh_diffuse_bumpmap_parallax.frag"
shadowshader="abstract::mesh_shadow.vert"

 

I think the code you had posted was trying to use BrickRound_Disp.dds for normal information, and then didn't have a height map to use for the parallax effect.

[BrokenPillar]

Along the same lines of this topic, does anyone know if there is a way to add parallax maps to terrain textures, or how to modify the terrain shaders to allow for them? This would be nice since many terrain materials are typically the kind that benefit the most from parallax occlusion. You can also store displacement maps in the alpha channel of the diffuse map of terrain textures since they don't need transparency.

[Marleys Ghost]

Omid had a test of Parallax/POM here.

[macklebee]

Omid had a test of Parallax/POM here.

 

yep, that basically where i had gotten mine many moons ago...

[Marleys Ghost]

I only ever tried it using Omids test example .. not really found a need for it .. yet.

[dreamhead]

i wil try that guys thanke you very much for your help guys,i wil let you now if it works or not

[dreamhead]

oke i got something,it was not quite what i was hoping for but it is a start

[fuego]

I recommend you to make a gaussian blur with an amount of 2-3 to your diffuse map. It helps smoothing the displacement very much. Otherwise you get too rough surfaces. Crysis has a clever displacement mapping on the terrain, all small rocks and stuff (the ones on the terrain only, not the big rocks which are modeled and placed separately) are displacement maps on the terrain but when you go away, they get thinner and at the end, they become ordinary textures when you are on enough distance. They can make samples of a small region with that technique, otherwise they had to fragment the whole terrain into small pieces, which is not possible in practical case.