Top "Occlusion" questions

3d Occlusion Culling

I'm writing a Minecraft like static 3d block world in C++ / openGL. I'm working at improving framerates, and so far …

opengl 3d culling occlusion
ggplot2: how to transparently shade alternate days on a plot

What am I doing wrong here please? I'm trying to shade alternate 24-hr daily rectangles with transparent gray. But only …

r ggplot2 vectorization alpha-transparency occlusion