regarding scrool the texture


04-12-2008 06:07:34

sorry for posting this again,iam not able to get the solution for applying the texture animation for ETTerrain.

iam using the ETTerrain and i need to apply the texture animation for a particular texture , for that i wrote scroll_anim 1 o in ETterrain materail script file for that particular textureUnitState. But iam not able to get that effect, i read through forum that it can be done using and changing textureCoordinate caliculations in,please some one guide me how can i get the solution for this problem
sorry for my english
thx in advance


04-12-2008 22:04:13

Method 1: Do it yourself
add time as input to the fragment program
fragment_program_ref ET/Programs/PSSplat2
param_named_auto t time

uniform float t
as input to the FragmentShader in

use iTexCoord0 + t as input to the sampler for your particular texture
tex2D(splat1, iTexCoord0 + t )
scrolls it along both axes
use float2(iTexCoord0.x+t,iTexCoord0.y) for only u direction.

Method 2: Let Ogre do it for you and use scroll_anim
As I mentioned somewhere else param_named_auto texture_matrix is your friend.
Add as input to fragment program
param_named_auto texMat texture_matrix 0 //0 is the index of texture_unit
Add uniform float4x4 texMat as input to the FragmentShader


as sampler

Benefit of method 2 is that all anims from the corresponding texture_unit work as with the fixed function pipeline. Drawback would be some performance hit.

I didn't try all of this code but with ogre.log you should find any remaining errors.
I think that should be more than enough to get your own animation working.


09-12-2008 09:45:15

thx billykater for your valuable reply,i will try this and if i face any problem i will take your help

thx u very much