Hero Wavelength Spectral Sampling successfully implemented!

Both: 4 samples per pixel
Left: one wavelength per ray
Right: four wavelengths per ray

With only a modest increase in runtime duration, the image becomes much smoother. This is more efficient than just adding more samples per pixel!

Implementing iridescence with thin film interference in my rendering engine!

Holiday Teaser

Sculpt 3D is a Ray tracing package written for the #CommodoreAmiga in 1986 by Eric Graham, who had previously written a ray tracer called SSG which was used to render the infamous Juggler demo.

#retrocomputing #pixelart #raytracing

It can render 24 bit graphic images as seperate red, green, and blue files that are intended to be sent directly to a framebuffer, or combined into a raster file. I provide an example program written in C which combines the individual channel files into a SUN raster file, as an example of how we would process the output to be viewable, back in the day.

Sculpt can render files as much as 4 times NTSC video resolution quite well. However, once you go above 2048 lines of resolution, the ray tracer falls victim to an approximation error which causes triangles to be missed.

The 6000x4000 image took a week to render on my Amiga 1000. The 786x482 image took 4 hours.

I have placed the results on github for anyone to see, including the source scene data which can be loaded into Sculpt 3D, and the 'combine' utility which shows how to generate a SUN Raster file from the output channel files, so you can utilize it in a program such as GIMP.

https://github.com/tschak909/amiga-sculpt-3d-big-render

This shows that even in 1986, an Amiga could be used to output professional 3D raytraced artwork.

Enjoy.

I much enjoyed reading this informative page about the Amiga's Juggler demo, a landmark ray-traced 3D animation that amazed computer users back in 1986.

As a youngster, I took my first steps in 3D creation using the software in which the Juggler animation was created: Sculpt 3D.

http://etwright.org/cghist/juggler.html

#raytracing

implemented intersections of spheres, can now render lens-shaped mirrors

Amiga Did Ray-Tracing 30 Years Ago, And No One Remembers https://www.dualshockers.com/commodore-amiga-ray-tracing-30-years-ago/

#Amiga
#Commodore
#Raytracing
#Graphics
#retrocomputing

Among all I've done during my #PhD, designing and drawing the cover art for my dissertation has been one of the most rewarding.

#Astrodon #Art #PinkFloyd (General relativistic) #RayTracing #GravitationalWaves

Upgraded AI+Ray Tracing shaders with off-screen and diffuse reflections, refraction and caustics! Made with @godotengine!

Have you fine Mastodon folks seen this awesome work?

First ever raytraced game thats not software? 1080p realtime, interactive, fixed+float point, 3D vector math, no CPU, no instructions, autopipelined in #FPGA!
@suarezvictor's fantastic work w/ CflexHDL + PipelineC! #raytracing #graphics #hardware #gamedev #hdl #verilog #vhdl #eda

https://youtu.be/hn3sr3VMJQU

I guess I should write an #introduction.

I've been using the internet since 1992 and contributing to #Wikipedia since 2001. I haven't used Twitter since early 2021 because I decided it was unhealthy, and I used Mastodon a fair bit that year, but then lost my account through, apparently, inactivity, which I didn't realize was even a thing.

I guess I should put some kind of tag cloud here of stuff I'm interested in? Maybe #physics, #Linux, #Debian, #manufacturing, #DSP, #Python, #Numpy, #math (more #algebra than #analysis), #raytracing, #commonsbasedpeerproduction, #creativecommons, #piracy, #scihub, #libgen, #emergence, #solarpunk, #history (especially #Hellenistic and #Mohist), #UX, #HCI, #controltheory, #lifesupport, and #infosec.

#introduction

Hello, I'm Andrew Peterson. I'm interested in #graphics #raytracing #BevyEngine #gameDev #rust

I'm currently working on a raytraced game on the web.