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Ray tracing is a technique for modeling light transport in 3D computer graphics, simulating optical effects such as reflection, refraction, and shadows. Learn about the origins of ray tracing from Albrecht Dürer to Arthur Appel, and the evolution of ray tracing algorithms and applications.
A comprehensive list of free and commercial software for producing ray-traced images. Compare the features, licenses, platforms and availability of various ray-tracing software products.
Learn about the techniques and models used to simulate light in computer graphics scenes. Compare different types of light sources, lighting interactions, and illumination models, such as Phong, Blinn-Phong, and HDRI.
A ray is a geometrical model of light or other electromagnetic radiation, perpendicular to the wavefronts and pointing in the direction of energy flow. Learn about different types of rays, such as incident, reflected, refracted, special, and paraxial rays, and how they are used in optics.
Radiance is a suite of tools for performing lighting simulation, developed by Greg Ward since 1985. It uses ray tracing, HDR imaging, and global illumination, and supports many formats and platforms.
Ray tracing of a beam of light passing through a medium with changing refractive index.The ray is advanced by a small amount, and then the direction is re-calculated. Ray tracing works by assuming that the particle or wave can be modeled as a large number of very narrow beams (), and that there exists some distance, possibly very small, over which such a ray is locally straight.
Path tracing is a Monte Carlo method of rendering images of three-dimensional scenes with faithful global illumination. It simulates many effects such as soft shadows, depth of field, caustics, and indirect lighting, and can produce realistic results with physically accurate models.
Conventional ray tracing uses single rays to sample many different domains. For example, when the color of an object is calculated, ray tracing might send a single ray to each light source in the scene. This leads to sharp shadows, since there is no way for a light source to be partially occluded (another way of saying this is that all lights ...