Using problem combine with CubeMap and DiffuseMap

#1 Enel, could you re-ask the questions in a different way so I may better understand the issue(s) ? thx

The cubemap should only render within the diffuse map's alpha mask area...does this fail when both have an alpha ?
\\edit: I just checked cubemaps with alpha channels on alpha masked diffuse layers and it works on the base layer. ..so I'm not sure what you're asking.

#2 sorry for weak explain..

that is my problem..


if use combine cubemap, just one use alpha channel.. but i need two alpha channel

one is use torn texture, another use to combine cubemap

#3 I think he's using the cubemap alpha as a "strength" map, but the cubemap is rendering to texture where the base should be transparent? The in-game shot looks ok, so maybe it is a problem in the material editor preview?

#4 (Yeah, definitely tricky with the language barrier.)

Enel,..do you need 2 alpha channels in the diffuse texture ?
- You should be able to use the first alpha mask and it will just work for the effect you want. You would use the alpha channel of the cubemap to work it's strength.
The cubemaps work on lighting information(in AL), they do not depend alpha channels to render, but rather, where not to render.

(Note: I am very confused on where this may be heading.)

#5 yes i need 2 alpha channels texture

one is use to torn texture. another use to cubeMap Mask

so i need place to define cubeMap Mask texture

#6 Here's what you do:

In the Torque Material Editor for your model:

Layer 0 = Diffuse with Torn_Mask and Alpha on, normal, specular.

Layer 1 = Diffuse with Cube_Mask (Same as Torn_Mask, but with more alpha applied to the entire image to control cubemap levels) and Alpha on, normal, specular.

Now select your cubemap, and it should work. Playing with the alpha amount on the Cube_Mask texture will control the power of the cubemap.

#7 then you would use the torn texture with the torn alpha, then simply add a cubemap to that T3D material. You do not need 2 alphas in 1 texture but rather 1 alphamask in the diffuse texture. Try it out;


Used:
pacific demo texture: art/environment/TalGras.png

It works properly on my systems.
Also; You do not need an alpha channel for a texture to receive a cubemap. ..and cubemaps will conform to an alpha mask within the diffuse texture.

//Edit: Perhaps Brian's post solves your issue ?
//Edit#2: I asked James Ford for a cubemap intensity slider, too bad he didn't add one. Perhaps I'll resource one soon.

#8 @E.B.

you can see what is different :)

your TalGras diffuse map color has all covered by cubemap

but my diffuse map color has remain.

#9 I got it

Layer mechanism is look like small Visual Material (such as Unreal3 Material system)

cubemap is go through by order such as layer0 -> layer1 -> layer2 -> layer3

so need to reverse Brian's think :)

layer0 : cube mask map
layer1 : diffuse alpha map

#10 What Brian said is correct, I've never noticed the multiple layers in the material editor before and thought this was something that couldn't be done in T3D.

You need two textures to control where the transparency and cube mapping are applied.


Each of these textures needs an alpha channel. One of the textures alpha channels will be for the amount of transparency and the other textures alpha channel will be for the intensity of the cube map.

In the material properties if you look just above "Basic Texture Maps", there is a drop down list with Layer0, Layer1, Layer2 and Layer3 in it.

Select Layer0 and then set your diffuse map to your texture that has the alpha channel for the transparancy. Go to the "Advanced (all layers)" section and turn on transparency as you normally would.

Now select Layer1 in the drop down list and set this diffuse map to your second texture with the alpha channel for the cube map strength.

Go down to the "Advanced (all layers)" section for this layer and turn on the cube map that you want.

Now your material will be using two seperate alpha channels, one for the transparency and one for the cube mapping.


Thanks Brian for pointing out the layers.

#11 ok, I thought you were simply trying to get the mask to work.
Glad it's sorted.