airguanz/sdfgenerator

GPU 3D SDF generator using DirectX 11 compute shader

GPU SDF Generator

GPU 3D signed distance field generator, written with DirectX 11 compute shader

Building

git clone --recursive https://github.com/AirGuanZ/SDFGenerator.git
cd SDFGenerator
mkdir build
cd build
cmake ..

Options

OPTION(D3D11SDF_BUILD_SAMPLE "build SDF sample"   ON)
OPTION(D3D11SDF_BUILD_CLI    "build SDF cli tool" ON)

Usage

./SDF-CLI.exe -i "./mesh.obj" -o "./output.txt" -r 128,128,128 -q 16 -s -50,-50,-50 -l 50,50,50 -g true

• -i Input mesh filename (.obj, .stl, .ply)
• -o Output text filename
• -s Min point in SDF bounding box. format: x,y,z, or a single floating point value specifying all of them
• -l Max point in SDF bounding box. format: x,y,z, or a single floating point value specifying all of them
• -g (Optional) Use gpu or not. default value is true
• -r (Optional) SDF resolution. format: width,height,depth, or a single integer specifying all of them. default value is 64
• -q (Optional) Quality. number of rays for determining value sign. default value is 12

Output format

SDF-CLI writes generated values into a text file, using the following pseudocode:

file.write(width)  file.write(" ")
file.write(height) file.write(" ")
file.write(depth)  file.write(" ")
for z in [0, depth):
	for y in [0, height):
		for x in [0, width):
			file.write(SDF[x][y][z])
			file.write(" ")

SDF-Sample

A demo program using ray marching to visualize generated SDF.