Raytracing on ESP8266 and ILI9341 LCD display

This is a supplement to my speed comparison of STM32 and Arduino boards. Watch it here: https://www.youtube.com/watch?v=RD5VO8o9bD4 Details: - 2.2" LCD display based on ILI9341 driver - resolution 320x240, 16-bit RGB, 24-bit calculated - 1 pass only, no antialiasing (to avoid long boring video) - ESP8266 configured in both 80 and 160 MHz Conclusions: - ESP @ 80MHz is little slower than cheap STM32 @ 72MHz - but @ 160MHz is way faster! - ESP's SPI speed is not as impressive as STM32 Source code: https://drive.google.com/folderview?id=0B_jncvz2HAYCblR3Zkt4LVh5REE&usp=drive_web&pageId=102377604871671942921&tid=0B_jncvz2HAYCfkVDd2taYlFrdnR1N0M2WUg5NC1sSS15ckJ6enJnXzk4YnNzZkw4ZHR0NTQ