【Shader】Signed Distance Fields

关键词：distance Field  realtime， SDF： Signed Distance Field

A simple and efficient method is presented which allows improved rendering of glyphs composed of curved and linear elements. A distance field is generated from a high resolution image, and then stored into a channel of a lower-resolution texture. In the simplest case, this texture can then be rendered simply by using the alphatesting and alpha-thresholding feature of modern GPUs, without a custom shader. This allows the technique to be used on even the lowest-end 3D graphics hardware.

1. 研究distance Field技术，并尝试在GPU端进行处理

https://steamcdn-a.akamaihd.net/apps/valve/2007/SIGGRAPH2007_AlphaTestedMagnification.pdf

http://www.codersnotes.com/notes/signed-distance-fields/

https://www.ronja-tutorials.com/2018/11/10/2d-sdf-basics.html

https://www.ronja-tutorials.com/2018/11/17/2d-sdf-combination.html

https://prideout.net/blog/distance_fields/

 

https://www.shadertoy.com/view/llK3Wm

https://developer.nvidia.com/gpugems/GPUGems3/gpugems3_ch34.html

https://gamedev.stackexchange.com/questions/66636/what-are-distance-fields-and-how-are-they-applicable-to-collision-detection