How do faces in .obj work?

Posted by Adl on Stack Overflow See other posts from Stack Overflow or by Adl
Published on 2010-12-01T20:24:55Z Indexed on 2011/01/13 9:54 UTC
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Hi

When parsing an .obj-file, with vertices and vertex-faces, it is easy to pass the vertices to the shader and the use glDrawElements using the vertex-faces.

When parsing an .obj-file, with vertices and texture-coordinates, another type of face occur: texture-coordinate faces.

When displaying textures, apart from loading images, binding them and passing texture coordinates into the parser, how to use the texture-coordinate faces? They differ from the vertex-faces and I suppose that the texture-coordinate faces have a purpose when displaying textures?

Regards Niclas

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