A first something-ocean... Still massive amounts of work to do in terms of appearance, numerical precision at large scale, etc... #indiedev #gamedev #computergraphics #procedural #terrain #rendering

This is the UV space the ocean waves will be rendered in (100km per tile in the video). Still chasing some planetary-scale numerical precision issues both near the horizon and at close range... #indiedev #gamedev #computergraphics #procedural #terrain #rendering

Starting work on ocean waves. This is a camera-space grid where each vertex is raycast-projected onto the planet. Quads where at least one vertex misses the sphere are squashed onto the sphere's boundary (blue). #indiedev #gamedev #computergraphics #procedural #terrain #rendering

I added to my geo data baking system the ability to precompute the [lo..hi] elevation range for each tile to have the ability to do tighter (frustum, skyline, ...) culling in render-time. #indiedev #gamedev #computergraphics #procedural #terrain #rendering

Happy New Year everybody! Wrapping up 2025 and heading into 2026 happy that my terrain system is starting to pan out 🥳 #indiedev #gamedev #computergraphics #procedural #terrain #rendering

I've been implementing in Vulkan both the LUT precalc and runtime shading from "Precomputed Atmospheric Scattering" by Bruneton/Neyret. What a masterpiece of a paper! 🤯 #indiedev #gamedev #computergraphics #procedural #terrain #rendering

My planetary-scale engine is finally behaving. Recently I've been battling I/O stutter and cache thrashing. Here's where it's at: #indiedev #gamedev #computergraphics #procedural #terrain #rendering

Merry Christmas everyone all over the world! 🎄🎅🌍 #indiedev #gamedev #computergraphics #procedural #terrain #rendering

If you can think of a better approach, let me know! To bake the ~3TB Copernicus DEM dataset into 80GB of mipmap-pyramid tiles, here's what I did 🧵 #indiedev #gamedev #computergraphics #procedural #terrain #rendering

The GLO-30 Copernicus DEM (ESA) is a global lat-lon mosaic of 360x180 grayscale elevation tiles. Each tile covers 1°×1°, stored as a floating-point TIFF (meters), at 3601×3601 px. The full dataset reaches 1296000x648000 samples worldwide. #indiedev #gamedev #procedural #terrain

Standard vs. "Relaxed" cube-sphere projection on Earth 🌍 1: Classic normalization. Notice the stretching at cube corners. 2: NASA's relaxed formula. Nearly uniform cells everywhere. A little thread on the math 🧵 #indiedev #gamedev #computergraphics #procedural #terrain #rendering

I am chugging through literal terabytes of topographical info for my terrain system. Re-projecting, mip-mapping, ... I hope to have some pretty stuff to post soon. #indiedev #gamedev #computergraphics #procedural #terrain #rendering

If by "flat" you mean an ellipsoid where the radius along the equator is 6371 km and the radius at the poles is 21 km shorter, then yes. #indiedev #gamedev #computergraphics #procedural #terrain #rendering

Some more progress in my planetary streaming/rendering system. Some technical details below. 👇 #indiedev #gamedev #computergraphics #procedural #terrain #rendering

Some more infrastructure for planetary-level terrain data streaming & rendering I am working on: "Edge-length"-based (raster) quad-tree splitting + frustum/horizon culling. #indiedev #gamedev #computergraphics #procedural #terrain #rendering

If you fly a plane while maintaining a constant compass heading, you'll trace a STRAIGHT line on a Mercator projection map, but your actual trajectory on the planet will SPIRAL into one of the poles. #indiedev #gamedev #computergraphics #computationalgeometry #topology

This is my spherical terrain streaming demo sourced with a large dataset (200MB: about 1px every 2km) diced into 1-file per region with LZ4 compression and a TOC for fast pull-a-tile-by-its-ID. #indiedev #gamedev #computergraphics #computationalgeometry #topology

I've extended my terrain streaming libraries to the sphere using HEALPix partitioning. Hysteresis radii for CPU/GPU load/activate, per-frame command budgets and sphere subdivision are all configurable. #indiedev #gamedev #computergraphics #computationalgeometry #topology

Playing a little bit more with my new HEALPix framework. I took this 27360x13680 lat-long map from NASA Scientific Visualization Studio. #indiedev #gamedev #computergraphics #computationalgeometry #topology

Just implemented HEALPix (Hierarchical Equal Area isoLatitude Pixelization) which is a very elegant way to subdivide the sphere: 1- Each cell divides into 4 smaller ones. 2- Every cell covers the same solid angle. 3- Cell centers lie on rings of constant latitude. #indiedev #gamedev #geometry

Just implemented metric-aware Delaunay Triangulation on the sphere 🟣 Metric-aware => Every triangle respects the spherical metric, not the Euclidean one. Algorithm described below. #indiedev #gamedev #computergraphics #computationalgeometry #topology

Blue noise on the surface of a sphere. #indiedev #gamedev #computergraphics #computationalgeometry #topology

Extended my topology libs to work on non-Euclidean domains (spherical, toroidal, etc.) by turning mesh edges into geodesics. Below: Bridson's Poisson disk sampling across different domains. #indiedev #gamedev #computergraphics #computationalgeometry #topology

This is a very rough demo of the two libraries I have been working on recently (CartoKit/TerraKit) for terrain generation and for terrain streaming. Now in 3D, using military perspective (tilted ortographic camera). #procgen #gamedev #indiedev #procedural #terrain

I made some upgrades to my terrain streaming system: 1- asymmetric chunks/regions 2- circular vs. rectangular hysteresis zones 3- a "simulation window" that keeps a rect around the camera loaded in a contiguous block (instead of per chunk) of GPU RAM #procgen #terrain #streaming #gamedev #indiedev

Procedural Island Generation Part III is here! 🏝️ Blending of multi-scale noise layers and mountain distance fields will will transform the paint map foundation into beautiful terrain. Read the full post: #procgen #gamedev #indiedev #procedural #terrain

Testing my topology (DCEL/half-edge) library a little bit. Some Conway operators on a polyhedron and Catmull-Clark SubDiv. Simple matcap rendering in the viewport. #indiedev #gamedev #procgen #dcel #halfedge #computationalgeometry #topology

My library TopoKit is essentially a DCEL/half-edge wrapper. I've now added support for face/edge/vertex attributes, and propagation of those during mesh operations. #indiedev #gamedev #procgen #dcel #halfedge #computationalgeometry #topology

Mountain sharpness parameter to control peak steepness in procedural terrain generation: Transforms gentle hills into dramatic alpine ridges 🏔️ (Part of my ongoing series on procedural island generation). #gamedev #indiedev #procedural #terrain #procgen

New blog post: "Procedural Island Generation (II)" - Building on our Delaunay/Voronoi mesh foundation, we now create a low resolution base elevation map that defines the overall island shape. #gamedev #indiedev #procedural #terrain

In my infinite terrain streaming system I decoupled CPU load/unload (red) vs GPU activate/deactivate (blue) into two separate (intersecting) hysteresis zones. I also added a trait to support different zone shapes. #gamedev #indiedev #terrainrendering #optimization #graphics

New blog post: "Procedural Island Generation (I)" - Started a mini-series exploring terrain generation techniques inspired by the lovely mapgen4 project by @redblobgames. brashandplucky.com/2025/09/07/p... #gamedev #indiedev #procedural #terrain

[ fBm + ( 1 - Chebyshev distance to the center (squared) ) times a time-changing constant ] remapped by a water-ground 1D gradient. #gamedev #indiedev #procedural #terrain

( 1 - Chebyshev distance to the center + fBm times a time-changing constant ) remapped by a water-ground 1D gradient. #gamedev #indiedev #procedural #terrain

I just finished my content-agnostic heavily-concurrent infinite-terrain system. I can now inherit from a (procedural) TerrainProvider class and everything else will happen auto-magically. #gamedev #indiedev #procedural #terrain #infinite

Poisson disk sampling constrained to another Poisson disk sampling. Valid positions for the large dots are constrained to positions from the small dots. #gamedev #indiedev #procedural #computationalgeometry #algorithms

Voronoi diagrams: circumcenters vs. centroids. 1: Using tri circumcenters. Classic/pure, angles are more abrupt. 2: Using tri centroids instead. Smoother, bubble-like regions. #proceduralgeneration #gamedev #computergraphics #voronoi #terraingeneration #indiedev

Little viz of Bridson's algorithm (blue noise). Each point (red=active) tries to spawn 1 new active point in its (orange) [r..2r] annulus. Green=success, red X=failed attempts. When no valid spots remain after k tries, the point turns blue (inactive). #geometry #gamedev #math #algorithms

Little viz of Lloyd's relaxation: iteratively move random points to their Voronoi cell centroids, naturally organizing into a hex-dominant grid. Gray trails show each point's journey from chaos to order. #voronoi #computationalgeometry #algorithms #math

Porting my little topology-focused library to RUST at the moment. #rust #rustlang #topology #programming #coding

Been diving deep into the fascinating world of terrain generation lately! @redblobgames and his incredible blog have been an absolute goldmine of insights and techniques. #terraingeneration #procedural #computergraphics #gamedev

Finally finished that spherical harmonics post that's been sitting in my drafts for 2 years. It's about encoding panoramic radiance with just a few coefficients. #computergraphics #rendering #sphericalharmonics #graphics #gamedev

Recently, I've been adding support for WebGPU and Vulkan (alongside OpenGL) to my homebrew engine. To inaugurate support for compute shaders, here's a side-by-side of classic DDA vs. Hierarchical DDA on a 256^3 voxel field. #WebGPU #Vulkan #ComputeShaders #GameDev

It’s fascinating how the velocity field highlights water streams tracing “still active” solution paths, while everything else falls silent. #gamedev #solodev #indiedev #customengine #physics #sim #CFD #FluidDynamics

Witness FLIP water solve a maze!! 🌊 Stress-testing my FLIP fluids sim (incompressibility, no tunneling, etc...). #gamedev #solodev #indiedev #customengine #physics #sim

Just finished a PIC/FLIP fluid‐solver subclass on top of my custom Eulerian engine! 🚀 Plenty of room to optimize, but I’m thrilled with how it’s coming together. 🌊 #gamedev #solodev #indiedev #customengine #physics #sim

I did participate in a game jam this weekend. If you have a chance to test the prototype I would like to hear you opinion / feedback: ditiemgames.itch.io/shaman

I threw some multi-threading into my Eulerian fluid sim, using Red-Black Gauss-Seidel for the projection step and parallelizing all the embarrassingly-parallel bits. So now mid-sized sims crank out way faster. 2048x1024 cells here 👇 #gamedev #solodev #indiedev #customengine #physics #sim

Why do planes fly? (A simplified explanation) High pressure under the wing pushes up, and low pressure above pulls up. This net pressure difference creates lift. This is a visualization of the pressure field in yesterday's wind tunnel sim. #gamedev #solodev #indiedev #customengine #physics #sim

I'm having real fun with my tiny simulated wind tunnel. :-P Here's a NACA 0012 airfoil under an increasing angle-of-attack, facing boundary layer separation (stall) at about 12-15 degrees. #gamedev #solodev #indiedev #customengine #physics #sim