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OpenGL ES 3.0 Cookbook by Parminder Singh

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Rendering the wavefront OBJ mesh model

The wave file format is a famous 3D mesh model format developed by wavefront technologies. It contains the mesh geometry information in a readable text format.

The wavefront format mainly consists of two types of files: .obj and .mtl. The .obj file is responsible for describing the geometrical information of the 3D model, such as vertex position, normal, texture coordinates faces, and so on. The .mtl file is optional and contains material information for individual mesh parts, such as the texture and shading (diffuse, specular, and so on) information. Also, the .mtl file is exported automatically if it contains the texture information; otherwise, you must set Write Materials. The term material here refers ...

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