https://github.com/nqpz/fastcast

Fun sphere raycaster
https://github.com/nqpz/fastcast

futhark gpu raycaster

Last synced: 5 months ago
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Fun sphere raycaster

• Host: GitHub
• URL: https://github.com/nqpz/fastcast
• Owner: nqpz
• License: gpl-3.0
• Created: 2018-07-11T19:46:31.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2024-01-22T22:26:24.000Z (over 2 years ago)
• Last Synced: 2025-01-22T04:31:44.051Z (over 1 year ago)
• Topics: futhark, gpu, raycaster
• Language: Futhark
• Homepage:
• Size: 199 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: COPYING

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README

          
# fastcast

![Screenshot](screenshot.png)

The screenshot is from a run on an NVIDIA GTX 960M.

This program raycasts spheres without reflections.  It uses a naive

(i.e, *wrong*) lighting model where light is never blocked by other

spheres.

fastcast tries to keep it simple, and is compiled into a single map

kernel over the screen dimensions.  There is also some bit fiddling just

for the fun of it.

## Building and running

First run `futhark pkg sync` once.

Then run `make` to build and `./demo` to run the default demo.

## Controls

+ Up/Down: Move forwards/backwards

+ Left/Right: Turn left/right

+ PageUp/PageDown: Move upwards/downwards

+ Shift: Move four times faster

+ Minus/Plus: Adjust the view distance to the virtual screen

+ F1: Toggle stats showing

## Requirements

  + Futhark

  + SDL2 and SDL2-ttf with headers.