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simple question about alpha with texture map.


cloudfx

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Hi all,

I made a simple tiff file with letters and alpha channel in photoshop.

I brought it to houdini and assigned it to a geometry.

I wanted to render only letters in houdini, but when I rendered it, the alpha does not work only for letters.

It rendered without alpha channel.

How do I let houdini know there is alpha channel?

Here is the scene file with the tiff file!

so can some1 please look at the file and what should I add?

Thank you very much! :rolleyes:

hipfile_ta.zip

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Hi all,

I made a simple tiff file with letters and alpha channel in photoshop.

I brought it to houdini and assigned it to a geometry.

I wanted to render only letters in houdini, but when I rendered it, the alpha does not work only for letters.

It rendered without alpha channel.

How do I let houdini know there is alpha channel?

Here is the scene file with the tiff file!

so can some1 please look at the file and what should I add?

Thank you very much! :rolleyes:

I've attached a fixed version of your file. Make sure to notice I've changed the texture options on your shop from "diffuse" to "diffuse + alpha". This will give you the desired result.

Also, if you create a VOP network yourself you can simply tell the Texture VOP to export a vector 4 (RGBA) instead of RGB. The 4th component wired into the Af output will give you the same results.

edit - I must be going crazy, I didn't see sibarrick's response

test.hipnc

Edited by Alanw
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I've attached a fixed version of your file. Make sure to notice I've changed the texture options on your shop from "diffuse" to "diffuse + alpha". This will give you the desired result.

Also, if you create a VOP network yourself you can simply tell the Texture VOP to export a vector 4 (RGBA) instead of RGB. The 4th component wired into the Af output will give you the same results.

edit - I must be going crazy, I didn't see sibarrick's response

Thank you very much! :)

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  • 4 years later...

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