This is a typical 'Spheres on checkerboard floor' Raytracing Scene, just like the ones
created with the first raytracers available for the PC (or the Amiga, of course) like DBW,
QRT or DKB (which is now POV-Ray). It shows most of the typical features like true reflection
and refraction in glass and mirrors, texture mapping, specular highlights and precise shadows,
that haven't been available in earlier rendering algorithms like the depth-buffer-algorithm or
the depth-sort-(painter-)algorithm (Do you remember Allen Hasting's 'VideoScape', a predecessor
It can be clearly seen, that, because the WinOSi-Algorithm is based on the raytracing method,
all those nice effects can be rendered with WinOSi too.
In addition there are several effects visible in the WinOSi-rendering, which can't be produced
by a standard
raytracer, like true caustics, specular and diffuse indirect
illumination, area-lights with soft shadows and highlights that are real reflections of the
light-sources instead of generating them locally by a phong-shader.
Although those features are not part of the standard
raytracing model, today's
state-of-the-art raytracers (like POV-Ray for example) have extended the standard to emulate
area lights, caustics (often not very accurate), and global illumination (only approximated)
together with advanced shading algorithms like the Cook-and-Torrance shader.
But: Raytracing an image with large area lights, perfect anti-aliasing, global illumination,
caustics, color dispersion etc. dramatically slows down even the quickest raytracer because of
the huge additional computation.
In WinOSi all these effects are part of the basic rendering model and so the rendering speed is
nearly the same if you have a single point light or many large area lights, if you use perfect
anti-aliasing or none. Actually you even can't switch off caustic- or shadow-generation in
WinOSi because they are an integral part of the whole algorithm.
The above image was rendered in over 200 hours with a resolution enhanced release 0.3 by Daniel
Renner from www.3d-gfx.com