I programmed this AR effect for TikTok. I spent most of my time making a shader that simulated the refraction and light bounces that happen within the jewels. The effect became public and ran on 99% of Android and iOS mobile devices around the world. It is a good example of how I can make shaders that run efficiently on devices without compromising quality to attain good results.
interior jewel refraction GLSL shader
Crown running on mobile phone
User post with the final AR Effect
User post with the final AR Effect