**Serhii Rieznik homepage** Support Ukraine ======================================================= [Support the Defence Intelligence of Ukraine](https://di-ukraine-support.link/) Direct support for Ukraine. My posts ======================================================= [Writing ray-tracer using Metal Performance Shaders](metal-ray-tracer/index.html) [How much boilerplate code you need to write a ray-tracer?](rtcode/index.html) Contacts ======================================================= [Twitter](https://twitter.com/serhii_rieznik) [Instagram](https://www.instagram.com/serhii_rieznik/)