Real-time rendering

Real-time rendering generates images quickly enough to respond interactively to changing inputs, such as camera movement, animation, or user actions.

Rasterization: Rasterization converts geometric primitives into fragments corresponding to pixels in an image. It is the main pipeline that turns scene geometry into screen coverage.
Three-dimensional computer graphics: Three-dimensional computer graphics is the creation and manipulation of images and scenes represented in three dimensions. Real-time rendering is one way to produce images from 3D scenes.
Offline rendering: Offline rendering generates images without requiring an interactive response, often allowing extensive computation per image. It can spend far more time on each image than an interactive renderer can.
Video game graphics: Video game graphics are the images and visual effects generated to represent interactive game worlds. Games are a major setting where rendering must track player input continuously.
Input lag: Input lag is the delay between an input action and its visible or physical response. Rendering and display delays contribute directly to the time between action and image.
Graphics processing unit: A graphics processing unit is a processor designed to perform many graphics and data-parallel operations simultaneously. Its parallel execution makes high-throughput image generation possible.
3D modeling: 3D modeling is the creation of digital representations of objects and environments using three-dimensional geometry. Models supply the shapes that a real-time renderer projects into images.
Path tracing: Path tracing estimates global illumination by simulating many paths of light through a scene. Its convergence can require more samples per image than real-time budgets allow.
Virtual reality: Virtual reality presents a computer-generated environment in which users can look and act from an embodied viewpoint. Head movement makes low latency and stable frame delivery especially important.
Temporal anti-aliasing: Temporal anti-aliasing combines information across successive frames to reduce visible jagged edges. It uses frame history to improve image quality while limiting per-frame sampling costs.

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