diff --git a/articles/links-of-the-open-world-programmer/page.mmd b/articles/links-of-the-open-world-programmer/page.mmd
index f8de9e4..f54032c 100644
--- a/articles/links-of-the-open-world-programmer/page.mmd
+++ b/articles/links-of-the-open-world-programmer/page.mmd
@@ -51,6 +51,7 @@ CSS:    /style.css
 - [Occlusion culling for terrain](https://www.researchgate.net/publication/248358913_Voxel_Column_Culling_Occlusion_Culling_For_Large_Terrain_Models)
 - [Billboard quad transformation optimization](https://gamedev.stackexchange.com/questions/201963/efficient-calculation-of-billboard-sprite-transformations)
 - [NVidia bindless extensions](https://developer.download.nvidia.com/opengl/tutorials/bindless_graphics.pdf)
+- [hacksoflife blog, full of good things](http://hacksoflife.blogspot.com/search/label/OpenGL)
 
 ## technical stuff
 - [Determinism between opengl vendors](https://stackoverflow.com/questions/7922526/opengl-deterministic-rendering-between-gpu-vendor)