I am trying to build up a collection of the ways in which various popular modelling packages and associated plugins (Sketchup, Maya, Max, XSI, for example) export a simple test model that illustrates the use of a texture with an alpha component used to indicate transparency. The model should be a simple quad (possibly rendered as two triangles) to which a single texture has been attached (probably in the diffuse channel, depending on lighting model). I have attached an example texture to this post. It consists of a simple chequerboard of green and black squares. The green squares have an alpha component set to 1 and are meant to be opaque and the black squares have an alpha component set to zero and are meant to be totally transparent. To get the ball rolling I have attached the following example files for Sketchup
- The texture file used.
- A screenshot of the model in Sketchup.
- A screenshot of the kmz file imported into Google earth.
I will upload the next two when I have worked out how to get the forum to accept non image files.
- The Sketchup (.skp) file
- The Collada file produced. This is a .kmz (zip archive) which contains the dae file.
It would be really helpful if anyone with access a modeller other than Sketchup could produce a simple test model as I have described above and post the results here and/or email to me at firstname.lastname@example.org and I will summarise.