3D renderTextures

Unity Engine
1

Hi everybody,
I can’t get renderTextures to work in the right way when I use 3D textures instead of 2D ones. Here is a quick snippet of the initialization.

public RenderTexture rtVol;
public int size = 128;
.
.
.
void Start () {
            rtVol = new RenderTexture(size, size, 0, RenderTextureFormat.ARGB32);
            rtVol.useMipMap = false;
            rtVol.volumeDepth = size;
            rtVol.isVolume = true;
            rtVol.enableRandomWrite = true;
            rtVol.Create();
}

Now, the 8 MB size seems right for the 128 x 128 x 128 32 bit 3D texture, but instead of the editor showing my a preview of some nice 3D Texture, all I get is this:

1840149--118018--upload_2014-11-6_12-28-5.png
1840149--118018--upload_2014-11-6_12-28-5.png420×809 27.9 KB

Likewise, when I try to write to that renderTexture from a pixel shader, using a RWTexture3D, nothing seems to work. I get no errors but I see no effects.

Any hints on what I’m doing wrong?

2

Update:

Well, seems like the renderTexture previewer is not currently capable of previewing 3D textures. The 3D texture was, indeed, successfully created and I was able to visualize it using another shader.

It would be great if unity developers consider fixing 3D renderTextures previewing in the upcoming releases.