Procedural Animation - Animated Texture

This code display a quadrangle with a procedural animated texture image. The computation of the texture image is directly performed in a fragment shader in the file shaders/animated_texture/animated_texture.frag.glsl.

An initial procedural texture is available in the example code and display an evolving random texture in the radial direction using polar coordinates.

• - The random nature of the texture is obtained via the call of the snoise function that features simplex noise (/perlin noise).
• - The snoise function is already provided for 2 and 3 input variables.
• - The snoise is a variant of the default snoise where the summation over the octave is performed on the absolute values of the pseudo-random function.

Objective: Adapt the code of the fragment shader to reproduce the effect displayed in the following example.