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Hello! I'm practicing with shaders these days, and found this great ressource: http://www.creativeapplications.net/processing/geometry-textures-shaders-processing-tutorial/
I'd like to achieve the effect you see in the beginning of the video and here: http://www.creativeapplications.net/wp-content/uploads/2013/05/AmnonOwed-GTS-GLSL_SphereDisplacement01.jpg, displaying the texture of a shape only on his wireframe structure (this effect is not included in the sources of the tutorial).