Tuesday, October 15, 2013
Blender Alpha Channel Madness
October 15th, 2013
When I was first learning blender I stumbled into getting alpha channel textures to display in the 3D view in Blender. I continued to use the same starting file / setup so I always get this behavior. Well I have built a new gaming / development computer and had to reinstall Blender on it. I soon discovered that this transparency / alpha channel display was anything but straight forward. It took me several hours to find the "secret sauce" to get this to work.
I found the answer near the bottom of this tutorial:
http://www.katsbits.com/tutorials/blender/scene-view-alpha-transparency.php
Here is the no-nonsense solution:
1. UV map texture onto object (see other tutorials on how to do this)
2. in the "3D View" press N
> go to "Display" section
> in shading pick singletexture or multitexture
> check 'Textured Solid'
3. On the top menu bar change the engine used for rendering to "Blender Game".
> the default value is "Blender Render"
> this will enable a "hidden" game settings feature
4. In the "Properties" view select the "material" section/tab
> go to "Game Settings" section
> in "Alpha Blend" select "Alpha Blend"
> if you want double sided uncheck "Backface Culling"
Optional:
5. On the top menu bar change the engine used for rendering back to "Blender Render".
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