sdfgen

Stand-alone GPU-based signed distance field generator from 3D triangle meshes. Used in Armory, written in Haxe and Kha.

Run

Takes mesh.obj file and outputs raw 50x50x50 (50x2500) volume of floats into out.bin. This volume can be loaded into a 3D texture using R32/R16 format.

git clone https://github.com/armory3d/sdfgen
cd sdfgen/build/krom

Windows

./run_windows.bat

Linux

./run_linux.sh

MacOS

./run_macos.sh

Viewer

A simple viewer is included. Copy resulting out.bin file into sdfgen/viewer/build/krom.

cd sdfgen/viewer/build/krom
./run_windows.bat
./run_macos.sh
./run_linux.sh

An included mesh.obj file:

Currently results into this:

Build

Node and Git required.

1. Recursive clone

git clone --recursive https://github.com/armory3d/sdfgen
cd sdfgen
git submodule foreach --recursive git pull origin master
git pull origin master

2. a) Compile Krom

node Kha/make krom

2. b) Compile C++

node Kha/make --compile

References

This tool builds upon the works kindly shared in:

• (!) https://kosmonautblog.wordpress.com/2017/05/01/signed-distance-field-rendering-journey-pt-1/
• http://advances.realtimerendering.com/s2015/DynamicOcclusionWithSignedDistanceFields.pdf
• http://www.iquilezles.org/www/articles/distfunctions/distfunctions.htm
• https://en.wikipedia.org/wiki/Möller–Trumbore_intersection_algorithm

Tech

• Iron
• Kha
• Krom
• Haxe