Secondary Texture Offset

is there any reason why something like this (from the wiki) does not animate a secondary texture when for instance i change "_MainTex" to "_AlphaTex"? i've tried a few different scenarios nothing seems to animate except the main texture.

Code (csharp):

1.  
2. var uvAnimationTileX = 4;
3. var uvAnimationTileY = 4;
4. var framesPerSecond = 10.0;
5.  
6. function Update ()
7. {
8.     // Calculate index
9.     var index : int = Time.time * framesPerSecond;
10.     // repeat when exhausting all frames
11.     // index = index % (uvAnimationTileX * uvAnimationTileY);
12.    
13.     // Size of every tile
14.     var size = Vector2 (1.0 / uvAnimationTileX, 1.0 / uvAnimationTileY);
15.    
16.     // split into horizontal and vertical index
17.     var uIndex = index % uvAnimationTileX;
18.     var vIndex = index / uvAnimationTileX;
19.  
20.     // build offset
21.     // v coordinate is the bottom of the image in opengl so we need to invert.
22.     var offset = Vector2 (uIndex * size.x, 1.0 - size.y - vIndex * size.y);
23.    
24.     renderer.material.SetTextureOffset ("_AlphaTex", offset);
25.     renderer.material.SetTextureScale ("_AlphaTex", size);
26. }
27.  

 

yep - i would open whatever shader i was working with copy the text directly from that. hold on though - i just tried to throw together an example with the terrain 2-layer this script - it seemed to work fine.

Code (csharp):

1. var offset = 0.0;
2. var offsetSpeed = 0.5;
3.  
4. function Update()
5. {
6.     offset = Time.time * offsetSpeed;
7.     renderer.material.SetTextureOffset ("_Mask", Vector2(-offset, 0));
8. }

(i was fooling around with stuff for explosivo just remembered i wanted to ask this - but now i have to remember what shader i was using at the time ; )

 

i found one example - the XRay shader. trying to animate "_RampTex" doesn't seem to do anything. there was another that i couldn't get going though but i can't seem to find it atm - i was trying all sorts of wacky things a few weeks ago now i've forgotten ; )

i'm working now but i will look more later if you want make up a package for you to check out.

 

ah i see, thanks for the info ; )