Nanite, a system developed for Unreal Engine 5, represents a significant optimization effort that required a deep understanding of both high-level and low-level hardware capabilities.

The optimization of rendering in Unreal Engine was a significant challenge, focusing on reducing the cost of rendering pixels to improve performance.

Dynamic lighting in Unreal Engine was achieved through approximations rather than brute force calculations, allowing for real-time effects like torch flickering and shadows.

The future of storytelling in film using Unreal Engine involves moving away from traditional green screens to LED wall panels that display real-time graphics, enhancing the quality of lighting and actor performance.

Creating ultra-realistic environments in Unreal Engine involves intricate details like dirt and lighting, which contribute to the immersive experience of scenes set in historical contexts, such as Nazi-occupied France in 1943.

Rendering objects at extreme close-up and far away distances requires generating the right amount of geometry to be indistinguishable from reality without excess.

The evolution of Unreal Engine from 1 to 5 has been marked by significant performance gains in hardware, allowing for increasingly realistic graphics and dynamic environments, but the biggest limitation remains its single-threaded nature of game simulation, complicating game logic and making multi-thread programming more challenging.

Nerf, or Neural Radiance Fields, represents a breakthrough in backing out 3D structure from 2D observations, merging reconstruction and generation in computer vision.

If you render two triangles per pixel, the image can be indistinguishable from one rendered with thousands of triangles per pixel, but rendering less than that will show visible artifacts.