Inigo Quilez
Intro Arround 2002 I made my first attempts to visualize fractal mountains and test procedural texturing. At that time I was not able to raytrace polygons and my rasterization engine was really bad. So I chose to do a "raymarcher" to create some pictures cause it's a really simple technique. What I implemented was a quite brute force thing and was very slow. But it was very simple to code, somethi
GPU Gems - Chapter 21. Real-Time Glow
GPU Gems is now available, right here, online. You can purchase a beautifully printed version of this book, and others in the series, at a 30% discount courtesy of InformIT and Addison-Wesley. Please visit our Recent Documents page to see all the latest whitepapers and conference presentations that can help you with your projects. Greg James NVIDIA John O'Rorke Monolith Productions Glows and halos
Inigo Quilez
Intro Here you will find the distance functions for basic primitives, plus the formulas for combining them together for building more complex shapes, as well as some distortion functions that you can use to shape your objects. Hopefully this will be useful for those rendering scenes with raymarching. You can see some of the results you can get by using these techniques in the raymarching distance
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