Terrain Four Layer

Unity Engine
1

Hi all,
I’ve been trying out the 4 layer terrain shader posted on the wiki by Aras.
http://www.unifycommunity.com/wiki/index.php?title=TerrainFourLayer
I have created the mask (RGBA), with seps for R,G,B and A

It only shows the 1st texture. ie Color1

What am I doing wrong here
I have a GeForce 6600

2

Did u check the import settings to ensure it has arrived as one of the rgba formats? Other than that I dont know…
hth
AC

3

As far as I know, that shader does not work on GeForce cards, because they only expose 4 OpenGL texture units (and the shader uses 5). In Unity 2.0 we’re changing the way textures are bound in the shaders, so there it will work. For now you could change the shader to use 3 texture layers.

4

Here’s a terrain 3 layer shader:

46262–1680–$terrain_threelayer_769.shader (1.33 KB)

5

Thanx for the replies.
To Claify :
I have used a shader that was posted on the wiki some time ago.

With 5 color(texture) layers, each with a detail texture and each with a seprate mask, + a lightmap layer. (that is 16 different images)
This works fine on my GeForce 6600 and looks good for terrain shading

What are “OpenGL” texture units ?
(is it different to how many layers can be used ?)

My real question here is how do I use channels other than Alpha or a seperate hicon to mask layers

Can a “three” layer shader be made that uses R,G, and B channels of one image as masks to reveal 3 other RGB textures, instead of having a seperate matte for each layer ?