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| | Parallel raytracing on the IBM SP2 and T3D |
 | | Raytracing is a widely used method for generating realistic-looking images on a computer, but it still requires considerable computing power, especially when rendering complex scenes. | | | Raytracing is a widely used method for generating realistic-looking images on a computer. | | | The input to the raytracing algorithm is the scene - the description of 3D objects geometry, together with the definition of objects' materials, definition of lights and the definition of the camera. |
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http://sic.epfl.ch/SA/publications/SCR95/7-95-54a.html
(2431 words)
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| | Create your own supercomputer with Java |
| | Raytracing has one characteristic that's quite relevant to parallel computation: Each pixel can be computed totally independently from all others. | | | Although raytracing is not what this article is about, I shall give you a very brief summary of the technique: Computer generated images all have at their heart a mathematical description of the scene to be generated. | | | Concretely, the raytracing algorithm is extremely simple, in principle: For each image pixel to be rendered, it traces an imaginary beam of light from your eye (the viewpoint), going through the pixel and intersecting at some point the computer model of the scene to be drawn. |
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http://www.javaworld.com/javaworld/jw-01-1997/jw-01-dampp.html
(1011 words)
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| | flipcode - Raytracing Topics & Techniques |
| | Those rays are the reason that a raytracer does not trace rays from a light source to a camera, but vice versa. | | | I tried some AI, which was great fun, and recently I dove into a huge pile of research papers on raytracing and related topics; such as global illumination, image based lighting, photon maps and so on. | | | But it starts with a list of benefits of raytracing over rasterization-based algorithms. |
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http://www.flipcode.com/articles/article_raytrace01.shtml
(1617 words)
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| | Hardware Accelerated Raytracing - Dimajix Developer Blog |
| | Raytracing is a very expensive technique for generating photorealistic images that has a long history - in fact it is one of the oldest approaches to high quality rendering invented by Andrew Glassner many years ago, the first images where halftoned bitmaps printed on a black and white printer. | | | A remedy may be seen in the projects by the Computer Graphics Department of the University of Saarland in Germany. | | | Nowadays NVidia show us how to do Raytracing on the GPU - but it still far too slow for being used for complex scenarios in realtime environments. |
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http://blog.dimajix.de/archives/72-Hardware-Accelerated-Raytracing.html
(320 words)
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| | Realtime raytracing - GameDev.Net Discussion Forums |
| | With our current technology we can't "do" good realtime raytracing without hacking around a lot of the complexity issues (subsampling, approximations, and environment mapping in raytracers are all examples of such hacks). | | | raytracing gets needed more and more, so there will be more and more solutions to map the task directly to hw.. | | | Posted - 10/1/2003 6:06:01 PM Raytracing versus scanconversion for first hits and shadow rays is actually a contest between forward mapping (objects to image-space) and inverse mapping (image-samples to world/object-space). |
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http://www.gamedev.net/community/forums/viewreply.asp?ID=1122462
(3204 words)
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| | Raytracing in Photoshop |
| | Raytracing effects have worked their way firmly into the iconography of computer picture-making, and so we often expect to see it. | | | And both advocates and antagonists agree that raytracing is often very slow and CPU-intensive, for even the most advanced and optimized raytracing programs. | | | We just render the different light components separately and add them up in Photoshop. |
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http://www.botzilla.com/house/RayPS.html
(2112 words)
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| | Lightrays - Tutorials - Accelerating Raytracing |
| | In the Global Raytracer Settings dialog (in the Raytrace Parameters rollout), You can change the Ray Depth. | | | To lower render times with a raytraced scene, there's an easy albeit expensive solutions: A dual-CPU setup, with two processors. | | | In our example, the example has been reduced to 20 seconds using it though (image to the right). |
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http://www.lightrays.de/html/tutorials/raytracing/raytrace_tut_eng.htm
(713 words)
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| | Raytracing |
| | In 1995, I found the POVRAY Raytracer for MS-DOS and I got the idea to convert the Prinz Eugen data in a way that they could be used in this Program. | | | After the data was converted to a format usable by MORAY, it could be used to construct a scene for the raytracer program. | | | Therefore there was a huge library of available objects to use. |
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http://www.german-navy.de/raytracing
(302 words)
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| | Realistic Raytracing - Zack Waters |
| | Although distribution raytracing is a huge improvement it does not solve the complete problem. | | | The images generated by an implementation of the classical raytracing algorithm can look wonderful but also unrealistic and often times suffer from severe aliasing problems. | | | Never the less distributed raytracing is computationally expensive. |
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http://www.cs.wpi.edu/~emmanuel/courses/cs563/write_ups/zackw/realistic_raytracing.html
(3125 words)
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| | P a n d a m o n i u m |
| | Raytracing is a way of creating beautiful images or animations through the use of mathematics. | | | There are many different raytracing programs out there, but one of the best is POVRay which is free, has a great deal of user support and hosts the internet raytracing competition. | | | Each image is created by designing objects in a three dimensional virtual world. |
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http://sacrofts.tripod.com/pages/rindex.html
(269 words)
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| | [No title] |
| | Raytracing and radiosity tend to produce much higher-quality images than those seen in real-time environment such as OpenGL. | | | All of the sample code I can see uses something akin to "immediate mode" in that it renders directly to the file, rather than creating a graph first and then rendering out to the file. | | | GUI for editing files for the Yafray raytracer |
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http://www.vrplumber.com/py3d.py?category=raytrace
(172 words)
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| | R - Raytracing Reference |
| | Raytracing algorithms follow a ray of light as it bounces around the scene, collecting intensity contributions on the way. | | | Raytracing methods are especially suited for rendering shiny or transparent objects. | | | For this reason, a radiosity program is usually complementary to a raytracing program, with the radiosity calculations forming a pre-rendering section. |
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http://fuzzyphoton.tripod.com/rtref/rtref_r.htm
(1198 words)
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| | Error #5 when raytracing an animation? (Confirmed in 6.6) - Topic Powered by Groupee Community |
| | It seems that I'm not able to take snapshots with raytracing on either, so that means I can't render particles in the air. | | | Everything works correctly if I don't use raytracing, still using raytracing for snapshots works perfectly. | | | Mon October 11 2004 11:01 AM So, as the header says, I'm getting error #5 everytime I try to render an animation with raytracing set on. |
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http://www.amabilis.com/eve/ubb.x/a/tpc/f/2046019974/m/19810925711
(390 words)
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| | comp.graphics.rendering.raytracing FAQ (part 1/2) |
| | If you have access to several networked computers and a compiler, it is possible to have POV-Ray render using multiple CPUs using the PVM system of distributed computing. | | | Tachyon is a more simple raytracer than e.g. | | | More information is at: http://www-mddsp.enel.ucalgary.ca/People/adilger/povray/pvmpov.html There is a large collection of software related to POV-Ray available on the Raytrace! |
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http://www.faqs.org/faqs/graphics/raytrace-faq/part1
(4293 words)
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| | ##raytracing @ Freenode |
| | ##raytracing is IRC channel for ray tracing related discussion. | | | 2005-5-10 Moving such a big channel as #raytracing is so much work that ##raytracing will remain on #raytracing for a while. | | | All users should start joining to ##raytracing instead. |
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http://users.tkk.fi/~hsaransa/raytracing
(56 words)
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| | Open Directory - Computers: Software: Graphics: 3D: Ray Tracing |
| | Realtime Raytracing Maillist - Discuss programming techniques, algorithms and productions related to realtime raytracing, both software or hardware based. | | | FAQ for realtime raytracing - The FAQ about speed optimization for raytracing for use in realtime raytracing. | | | YASRT Raytracer - A simple raytracer in development, it supports the basic features of a raytracer along with multi-threading. |
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http://dmoz.org/Computers/Software/Graphics/3D/Ray_Tracing
(922 words)
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| | Windows Raytracing Software |
| | FREE modeling, raytracing, animation package for Windows, Unix, and BeOS. | | | Modelling, raytracing, animation package for Windows, Unix and BeOS. | | | An C++ object oriented API which can be used to make other raytracers. |
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http://chuckr.bravepages.com/raytrac3.htm
(3303 words)
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| | Raytracing |
| | I use raytracing as a way to relax with my computer. | | | These images have more to do with the fun of creating mathematically defined objects than with any attempt to create aesthetically pleasing "Art"--I'll leave that to the artists. | | | Here are some examples of raytraced images I've created: |
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http://www.ivory.org/raytrace
(165 words)
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| | Robert Gatliff's gallery of raytracing and computer graphics |
| | Robert Gatliff's gallery of raytracing and computer graphics | | | (209K 1024x768), now with a faster computer which I keep busy at night on raytracing, this image took 48 hours to render on a Pentium/75. | | | Back to my home page, where you can find my mail address and other interests. |
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http://www.io.com/~rgatliff/gallery/gallery.html
(1141 words)
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| | comp.graphics.rendering.raytracing FAQ (part 2/2) |
| | The only drawback with the book is that it deals with POV-Ray version 1.0 which is dated now that version 3.0 is out, but it is still a very worthwhile investment for any POV-Ray user. | | | However, don't complain about software which uses the one that you don't like, since you can always go ahead and write your own software... | | | Title: Ray Tracing Worlds with POV-Ray Authors: Alexander Enzmann, Lutz Kretzschmar, and Chris Young Publisher: The Waite Group Year: 1994 ISBN: 1-878739-64-6 Raytracing Worlds with POV-Ray is written with the intermediate to advanced POV-Ray user in mind. |
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http://www.faqs.org/faqs/graphics/raytrace-faq/part2
(6252 words)
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| | Raytracing-Related Links |
| | What is really pulling me to this software is the Shading Language that everyone seems to boasting about (anything that allows you to programming is considered a "flexible" software). | | | The goal of PoVSB is to allow users of PoV to quickly and easily design scenes in the Windows environment with true camera preview of the scene so no guess work is involved. | | | Great place to start if you want to learn 3d-computer graphics and for no cost at all. |
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http://www.eleceng.adelaide.edu.au/Personal/kto/raytrace.html
(794 words)
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| | Raytracing Dispersion |
| | Simulating refraction in computer graphics is straightforward, the technique known as raytracing handles it quite well. | | | When computing refraction, standard raytracing uses a single IOR for a material, independent of the color (and hence the wavelength) of the ray being traced. | | | In this experiment I attempt to create an image featuring an accurate dispersive effect using only standard raytracing techniques. |
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http://www.mentis.ca/design/graphics/dispersion
(1079 words)
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| | runevision - Raytracing Jokes |
| | You find yourself trying to hack your way into one of the Cray super computers convinced if you can get in you could prove real-time raytracing was possible. | | | Your computer has a message waiting for you that says "Pleeeease no more raytracing. | | | You're quite happy to render fifty times as many pixels as necessary, just so one object will be supersampled adequately. |
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http://runevision.com/misc/jokes
(5118 words)
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| | Abiro - The Lab - Raytracing |
| | If you care for technical mumbo-jumbo: Raytracing is a method for creating artificial images by letting software follow imaginary light rays and adapt to optical effects (virtually of course) created by hitting objects, causing reflection, filtering, etc. The pictures created can be quite beautiful, but the process creating them is quite slow. | | | Modern 3D graphics cards do not perform raytracing in the true sense, yet pixel shaders can emulate raytracing to a certain degree. | | | There are also experiments going on using raytracing for realtime applications. |
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http://www.abiro.com/lab/raytrace.php
(85 words)
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| | POVCOMP 2004: Welcome! |
| | The Persistence Of Vision Raytracer ('POV-Ray') is a freely downloadable cross-platform application that implements the raytracing algorithm, which is a technique for simulating the physical behavior of light utilizing software-based mathematical models. | | | It can be used to generate photorealistic images that resemble objects in the real world, or to visualize 'virtual' objects that do not physically exist. | | | It has been used worldwide - and even out of it - both by hobbyists and artists, and by educators and professionals in numerous fields including biochemistry/protein research, medicine, architecture, engineering/product design, and mathematical visualization. |
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http://www.povcomp.com
(527 words)
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| | Graphics: Raytracing |
| | Persistence of Vision Raytracer source This is the source code in highly portible C for the Persistence of Vision Ray Tracer POV-Ray version 2.1. | | | FracTree is a program that creates fractal trees for use with the PovRay raytracer, it conforms to the Version 2 standard of the language. | | | A 286 with 640k and a VGA card is the minumum specs required. |
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http://www.algonet.se/~synchron/pheaven/www/area12.htm
(417 words)
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| | Ray Tracing FAQ |
| | Answers to Frequently Asked Questions about raytracing software on comp.graphics.rendering.raytracing |
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http://www.cg.tuwien.ac.at/rayfaq
(93 words)
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| | Raytracing Simulation of Nebular Media |
| | The images provided here have been created by an raytracing algorithm, which incorporates the numerical solution of the radiation transfer equation. | | | The troposphere `ends' at 7950m above sea level. | | | These large scales, together with an raytracing accuracy of an Angström (10E-10 meters), are a basic effort for the numeric stability of a raytracing algorithm. |
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http://www.photon.at/~werner/clouds/Clouds.html
(743 words)
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| | Raytracing?? - GameDev.Net Discussion Forums |
| | There also are hybrid approaches, that combine raytracing and shadowmapping, but they are even more complex... | | | If you want high quality in complex environments, and a good framerate, then use the shadowmapping method instead. | | | This is the stuff I'm going to start putting into my raytracer once I'm totally happy that I have the cleanest possible codebase to work with as a base. |
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http://www.gamedev.net/community/forums/topic.asp?topic_id=120983
(2286 words)
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| | C - Raytracing Reference |
| | In raytracers, this particular operation is automatically implemented by the specification that the distance along the ray to the intersection point must be positive (where a positive distance is measured in the direction of the ray, a negative one in the opposite direction). | | | In raytracing, CSG is implemented with inside-outside tests. | | | For instance, if a CSG intersection of two objects A and B was to be rendered, then only the parts of A inside B and the parts of B inside A would be displayed. |
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http://fuzzyphoton.tripod.com/rtref/rtref_c.htm
(1554 words)
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| | Christoph's page - Raytracing |
| | Persistence of Vision Raytracer is the program i use for most of my images and i also help developing. | | | Raytracing which makes it possible to generate realistic high quality images of imaginary objects and scenes. | | | The raytracing introduction i wrote will help you to understand how the images are actually generated in case you are not familiar with this. |
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http://www.imagico.de/raytracing.html
(233 words)
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| | Realtime-Raytracing@your PC |
| | Realtime raytracing project of the university of Utah (USA) | | | Realtime raytracing project of the technical university of Ilmenau (Germany) |
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http://www.schwarzers.de/links.php.htm
(19 words)
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| | Raytracing Forward Raytracing Backwards Raytracing Distributed Raytracing Stochastic Raytracing |
| | This is a very powerful approach for simulating the diffuse light distribution and reflection in three dimensional environments (a solution to the "global illumination model") and is used in the Radiance software. | | | Distributed raytracing can simulate scenes of extreme complexity quite effectively, while for scenes with very high numbers of light sources the radiosity approach often has some advantages. | | | A combination of the last two methods, called distributed raytracing, is the most interesting one for our purposes. |
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http://www.schorsch.com/kbase/glossary/raytracing.html
(221 words)
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| | POV-Ray - The Persistence of Vision Raytracer |
| | The Persistence of Vision Raytracer is a high-quality, totally free tool for creating stunning three-dimensional graphics. | | | Purchases made via these links support our server |
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http://www.povray.org
(243 words)
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| | Tom and Lu - Raytracing |
| | Instead, objects are created and distributed in a 3D geometric space by a series of programming instructions written into one or more text files. | | | Raytraced images are not created in the same way as conventional art. | | | I've been raytracing as a hobby for a few years now, and I'm a regular contributer to the Internet Ray Tracing Competition. |
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http://www.tomandlu.co.uk/raytracing
(139 words)
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| | Why Raytracing |
| | The solution for fast raytracing is a real hardware capable of raytracing. | | | So the real environment cannot be seen, but the effect of shininess is simulated. | | | The refraction ray proceeds through the surface the same way it came in. |
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http://graphics.cs.uni-sb.de/~sidapohl/egoshooter/why.html
(434 words)
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| | PiQ Software |
| | We are currently seeking partners for the hardware design and fabrication phase of Freon's development, as well as project investors. | | | Freon 2/7 is the world's first commercial hardware video accelerator specifically designed for realtime raytracing. | | | We have combined several powerful and innovative technologies to deliver the most advanced consumer rendering system available. |
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http://www.piqsoftware.com/projects/freon27
(121 words)
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| | Raytracing |
| | POV-Ray), which happens to be a very cool program. | | | Raytracing is a very cool image rendering technique which 1) wastes a *lot* of CPU cycles, and 2) produces very realistic images. | | | Anyway, when I have time to do it, it can get insanely fun, just like programming. |
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http://www.nuclecu.unam.mx/~federico/rt
(405 words)
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| | Christoph's page - Raytracing and POV-Ray - an introduction |
| | In every part you can find a list of links to further related material. | | | Raytracing and POV-Ray - an introduction to POV-Ray ( | | | From the feedback i got concerning this website i have the impression that for people not so familiar with the techniques of computer graphics it is sometimes difficult to imagine how the images shown here are made. |
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http://www.imagico.de/pov/ray_tutorial.html
(230 words)
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| | The Recursive Ray Tracing Algorithm |
| | However, ray tracing (and computer imaging in general) has been especially widely used in entertainment. | | | Pixar, the makers of Disney’s hit movie Toy Story, list on their site quite a number of movies in which they have used their software to create special effects. | | | [The following paragraph is not entirely accurate: Pixar did not use raytracing in any significant amount to create the scenes listed below, but rather used a sister technology known as "scanline rendering"--which does not use the techniques described in this paper. |
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http://www.geocities.com/jamisbuck/raytracing.html
(4225 words)
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| | Raytracing software |
| | Includes desks, chairs, bathroom stuff, computer (desktop and tower) and monitor and related. | | | This is the first raytracer I used until I found POVRay. | | | Freetextures.com - these do not seem to be seemless textures for use in raytracing, but rather photographs of interesting things. |
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http://www.geocities.com/Heartland/Plains/3959/Raytrace.htm
(1882 words)
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| | Raytracing Reference |
| | In that case, I advise you to check the page on raytracing programs. | | | The raytracing reference gives short, easily-understood explanations of common terms encountered while writing a raytracing program, reading other people's comments on the subject, or looking at a raytracing webpage. | | | Please note that in the interests of readability, very common terms have often not been marked as cross-references even though they may have been defined elsewhere. |
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http://fuzzyphoton.tripod.com/rtref.htm
(162 words)
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| | raytracing glass |
| | Do some test renders with raytracing before you make the glass transparent to get the shadows where you want them. | | | Find a photograph of a glass you like for reference. | | | Revolve a wine glass shape, place it on a plane. |
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http://users.design.ucla.edu/~cariesta/MayaCourseNotes/html/body_raytracing_glass.html
(108 words)
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| | Raytracing, Viewers & Freewares |
| | Pour voir ces pages, utilisez Netscape 2 ou plus. | | | CLOE logiciel de rendu par raytracing, gère les metaballs, blobs, meshs, superquadrique, hypertextures,... |
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http://perso.wanadoo.fr/pierre.g/ray
(22 words)
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| | Raytracing & Imaging -- An interactive Java Applet -- |
| | With this applet you can generate all 6 of the Quadric Surfaces, and the cylinder, and you can do all that in about a minute once the applet is loaded if you're using a typical 100 M Hz machine. | | | Everything that I've written works FLAWLESSLY, but it isn't done yet. | | | If you want to see what it looks like on my machine click here. |
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http://www.frontiernet.net/~imaging/raytracing.html
(588 words)
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| | Raytracing |
| | See also: Using Tachyon to render Wada fractals, and 3D IFS systems. | | | July-August 2002 First Place Winner, July-August 2002 Internet Raytracing Competition |
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http://astronomy.swin.edu.au/~pbourke/povray
(480 words)
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| | Werner Benger's "Light of C++" - The Light++ Raytracing Library |
| | The object-oriented raytracer which can raytrace general relativistic sunsets in dispersive media and more. | | | Keywords: raytracing, C++, object-oriented programming, relativistic raytracing, black holes, dispersion, atmospheric effects, class library | | | Werner Benger's "Light of C++" - The Light++ Raytracing Library |
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http://www.photon.at/~werner/light
(63 words)
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| | RayTracing |
| | A quick port of David Buck's raytracing package for VW. |
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http://map1.squeakfoundation.org/sm/package/3993429e-7493-42a3-ab07-40b57d677117
(28 words)
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| | Simulation of a Black Hole by Raytracing |
| | The calculations presented here were done in March 1993 on the workstations of the EDV-Pool. | | | The Einsteinian simulation used seven hours in a parallelized raytracing programg on three HP-workstations - extrapolated to a PC's power, an 386/33 MHz would need about two months to do the same... | | | Please feel free to send me any comments, including remarks to mispelling or unfortunately bad english. |
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http://www.photon.at/~werner/bh/gvsim.html
(1591 words)
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