mrsharpoblunto
Joined 14 years ago
Karma
167
Submissions
51
Member since
Oct 24
Recent submissions
Comment · 2 months ago
While the venerable keyboard and a good text editor are sufficient for most forms of text manipulation, there are cases where more specific tasks call for more specific hardware solutions.
Comment · 6 months ago
Love a good graphics writeup - I've been working on similar things for my procedural space/planet generator. The cool thing with atmospheric scattering is you can combine it with volumetric cloud rendering and get amazing sunsets & sky scenes
https://www.threads.com/@mrsharpoblunto/post/DVS4wfYiG8f?xmt... https://www.threads.com/@mrsharpoblunto/post/C6Vc-S1O9mX?xmt... https://www.threads.com/@mrsharpoblunto/post/C6apksDRa8q?xmt...
Comment · 11 months ago
Just let people enjoy things, if you don’t like dark mode, don’t use it.
Comment · 2 years ago
I’ve since done a bunch more on planetary cloud rendering, need to do a proper write up, but it’s a combination of volumetric noise, flow fields & atmospheric scattering.
Comment · 2 years ago
The author dismisses cubemaps pretty quickly, but imo it’s the simplest solution & it’s what I did when rendering dynamic gas giants on my own personal project a number of years back* . Using a cubemap doesn’t result in a 6x increase in memory usage, you’re just splitting the texture size from one large rectangular face into 6 smaller rectangular faces, but the total texture detail is the same. The nice part about a cubemap is you don’t have to worry about pole pinching at all + you can use a 3 or 4 dimensional noise function to easily create a seamless flow field for texture animation/distortion.
Comment · 2 years ago
The story of how I rediscovered the first real project I built after teaching myself to program - an RPG written in QBasic and how I got it playable again 25 years later.
Comment · 3 years ago
Great job explaning the whole process! I've been building some similar stuff recently for my procedural space-exploration side project (https://www.threads.net/@mrsharpoblunto/post/CufzeNxt9Ol). I was planning to do a dev blog post writing a lot of the details up, but yours covers most of the tricks :)
A couple of extra things I ended up doing were:
1) Using a lower-res texture to modulate the high-res raymarched density, this gives you control over the overall macro shape of the clouds and allows you to transition between LOD better (i.e. as you move from ground level up to space you can lerp between the raymarched renderer & just rendering the low-res 2D texture without any jarring transition.
2) Using some atmospheric simulation to colorize the clouds for sunrise/sunset. To make this performant I had to build some lookup tables for the atmospheric density at given angles of the sun.
3) Altering the step size of the raymarch based on density, I took this from the Horizon Zero Dawn developers where they have a coarse raymarch and as soon as they get a dense enough sample they step back and switch to a higher res step until the density hits zero again.
Comment · 3 years ago
There’s also OpenC1, which is an almost complete open source remake of Carmageddon. Jeff also has posted a ton of content around the internal workings and file formats etc on his dev blog - http://1amstudios.com/projects/openc1/.
Comment · 4 years ago
We have a new entry for the Dunning-Kruger hall of fame right here.
Comment · 4 years ago
Hi bgirard! I support the FB team that works on this - it's on the roadmap to open source hopefully H1 next year :) It's continued to find significant leaks in other parts of our infra too, so hopefully it will be equally helpful to others. Great to see others looking at memory tools now too - I'll definitely be checking Fuite out
Comment · 5 years ago
Makes me wonder if you could effectively apply Chernoff faces (https://en.wikipedia.org/wiki/Chernoff_face) to make different hashes easier for humans to recognize. TLDR map parts of the hash to modify aspects of a face (position, size, orientation of eyes, ears etc.) and you can take advantage of all the in-built circuitry in the human brain which can identify very small differences in facial appearance.
The idea is explored a bit in Peter Watts novel Blindsight - not for hashes, but visualizing high dimensional multivariate data via clouds of tormented faces :)