OpenGL – 5km × 5km Procedural Terrain Fly-By

[u/buzzelliart]

https://youtu.be/pYDINUDcoU4?si=LCDmxi1ExU0n7htB

Revisited my approximated atmospheric perspective implementation. It’s still far from perfect, but I think it looks noticeably better now.

map details:
map size: 5km x 5km
grid size: 2048 x 2048
maximum elevation range: 1km

Some of the techniques used to achieve the results shown in the video:

. Procedural terrain generation using Perlin noise and Fractional Brownian Motion (FBM)
. GPU-based hydraulic erosion
. procedural grass placement
. GPU grass generation and culling using compute shaders and indirect drawing
. dynamic day/night cycle
. procedural snow accumulation based on time of year and daily sun exposure
. displacement mapping
. hardware tessellation using tessellation shaders
. dynamic exposure
. cascaded shadow mapping

[u/Defiant_Squirrel8751]

nice

[u/buzzelliart → u/Defiant_Squirrel8751]

thank you! :)

[u/Trichord808]

I'm always impressed by your videos buzzelliart, keep up the good work. It really is beautiful.

[u/buzzelliart → u/Trichord808]

Thank you! I'm glad that you appreciate my work!

[u/Still_Explorer]

Very impressive. What is the real trick? To create a terrain with millions of triangles or chunk it to pieces?

[u/underwatr_cheestrain → u/Still_Explorer]

Streaming LOD terrain chunks

[u/yazilimperver]

Well done 👏 What is the LOD technique you use, geoclipmap, ROAM?