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James Hurlbut jhurlbut

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@bgolus
bgolus / HiddenJumpFloodOutline.shader
Last active February 22, 2026 09:25
Jump flood based outline effect for Unity https://medium.com/@bgolus/the-quest-for-very-wide-outlines-ba82ed442cd9
Shader "Hidden/JumpFloodOutline"
{
Properties
{
_MainTex ("Texture", 2D) = "white" {}
}
SubShader
{
Tags { "PreviewType" = "Plane" }
Cull Off ZWrite Off ZTest Always
@raysan5
raysan5 / custom_game_engines_small_study.md
Last active May 1, 2026 19:01
A small state-of-the-art study on custom engines

CUSTOM GAME ENGINES: A Small Study

a_plague_tale

WARNING: Article moved to separate repo to allow users contributions: https://github.com/raysan5/custom_game_engines

A couple of weeks ago I played (and finished) A Plague Tale, a game by Asobo Studio. I was really captivated by the game, not only by the beautiful graphics but also by the story and the locations in the game. I decided to investigate a bit about the game tech and I was surprised to see it was developed with a custom engine by a relatively small studio. I know there are some companies using custom engines but it's very difficult to find a detailed market study with that kind of information curated and updated. So this article.

Nowadays lots of companies choose engines like [Unreal](https:

@Bleuje
Bleuje / kdtree-test2.pde
Last active January 29, 2020 20:59
// Processing code by Etienne JACOB
// motion blur template by beesandbombs
// opensimplexnoise code in another tab might be necessary
// --> code here : https://gist.github.com/Bleuje/fce86ef35b66c4a2b6a469b27163591e
int[][] result;
float t, c;
float ease(float p) {
return 3*p*p - 2*p*p*p;
@silvesthu
silvesthu / GPUOptimizationForGameDev.md
Last active May 3, 2026 11:51
GPU Optimization for GameDev
@paniq
paniq / ellipsoid_frustum.md
Last active October 23, 2025 15:19
Ellipsoid Frustum Intersection

Ellipsoid Frustum Intersection

Yesterday I posted a problem to math stack exchange that bothered me for a while now, and right after I've had a few exchanges on Twitter, I got inspired to attempt a solution.

Here it goes. It's 100% untested but I'm fairly certain that it will work.

The problem is about a form of refining raytracing where we render a big list of convex 3D brushes (and I decided to start with Ellipsoids, since they're so useful) to the screen or a shadow map, without any prebuilt accelleration structure. How does it work? Well, if we had a way to figure out for a portion of the frustum whether it contained a brush, we could

  1. Start with a very low resolution
@wojteklu
wojteklu / clean_code.md
Last active May 5, 2026 11:23
Summary of 'Clean code' by Robert C. Martin

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

General rules

  1. Follow standard conventions.
  2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
  3. Boy scout rule. Leave the campground cleaner than you found it.
  4. Always find root cause. Always look for the root cause of a problem.

Design rules

@TheRealMJP
TheRealMJP / Tex2DCatmullRom.hlsl
Last active March 21, 2026 20:03
An HLSL function for sampling a 2D texture with Catmull-Rom filtering, using 9 texture samples instead of 16
// The following code is licensed under the MIT license: https://gist.github.com/TheRealMJP/bc503b0b87b643d3505d41eab8b332ae
// Samples a texture with Catmull-Rom filtering, using 9 texture fetches instead of 16.
// See http://vec3.ca/bicubic-filtering-in-fewer-taps/ for more details
float4 SampleTextureCatmullRom(in Texture2D<float4> tex, in SamplerState linearSampler, in float2 uv, in float2 texSize)
{
// We're going to sample a a 4x4 grid of texels surrounding the target UV coordinate. We'll do this by rounding
// down the sample location to get the exact center of our "starting" texel. The starting texel will be at
// location [1, 1] in the grid, where [0, 0] is the top left corner.
float2 samplePos = uv * texSize;
@SSARCandy
SSARCandy / opencv_with_cmake.md
Last active April 15, 2024 02:25
Setting up OpenCV(+extra modules) with Cmake step by step tutorial

Setting up OpenCV with Cmake GUI

  1. Download OpenCV and Cmake
  2. Build opencv with cmake image
  • Press configure, choose visual studio 2015, finish
  • Then press generate
  1. Open OpenCV.sln under build/
  2. Build it using Debug, Release
    image
@mandarinx
mandarinx / NineSliceScaling.cs
Last active July 22, 2022 02:43
9 slice scaling with a mesh in Unity3D
using UnityEngine;
// Nine slice scaling using a Mesh.
// Original code by Asher Vollmer
// https://twitter.com/AsherVo
// http://ashervollmer.tumblr.com
// Modifications by Thomas Viktil
// https://twitter.com/mandarinx
// http://ma.ndar.in/
@suakig
suakig / PostBuildProcess.cs
Last active August 23, 2021 15:20
PostBuildProcess.cs
using UnityEngine;
using UnityEditor;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;
using System.IO;
using System.Collections.Generic;
public class PostBuildProcess : MonoBehaviour
{
internal static void CopyAndReplaceDirectory(string srcPath, string dstPath)