rorydriscoll’s gists

rorydriscoll / Shader.glsl

Created November 26, 2011 00:14

Shader experiment

	// bind gloss {label:"Gloss", default:0.5, max:1, step:0.01}
	// bind cdiff {label:"Diffuse Colour", r:0.6, g:0.0, b:0.0}
	// bind cspec {label:"Specular Colour", r:0.3, g:0.3, b:0.3}
	// bind lightstrength {label:"Light Strength", default:3, max:100, step:0.1}
	// bind envtop {label:"Environment Top", r:0.0, g:0.2, b:0.4}
	// bind envmiddle {label:"Environment Middle", r:0.2, g:0.2, b:0.2}
	// bind envbottom {label:"Environment Bottom", r:0.01, g:0.1, b:0.01}
	// bind refractiveindex {label:"Refracive Index", default:1.5, max:3, step:0.1}
	// bind normalmap {label:"Normal Map", default:false}
	// bind diffuse {label:"Diffuse", default:true}

rorydriscoll / SubsetSum

Created December 3, 2011 00:32

Subset sum problem

	var max_sum = -Inf, best_begin = 0, best_end = 0, cur_begin = 0, cur_sum = 0

	for (i = 0; i < values.length; ++i)

	# Add the current value into our working sum
	cur_sum += values[i]

	# Update the max sum if we beat it
	if cur_sum > max_sum:
	max_sum = cur_sum

rorydriscoll / FullScreenQuad.hlsl

Created December 19, 2011 05:52

A vertex shader that uses the vertex ID to generate a full-screen quad. Don't bind vertex buffer, index buffer or input layout. Just render three vertices!

	struct Output
	{
	float4 position_cs : SV_POSITION;
	float2 texcoord : TEXCOORD;
	};

	Output main(uint id: SV_VertexID)
	{
	Output output;

rorydriscoll / FeatherUI.cpp

Created January 8, 2012 21:56

Mikko Mononen's UI 'feathering' technique

	void CalculateEdgeNormal(float& nx, float& ny, float x0, float y0, float x1, float y1)
	{
	const float x01 = x1 - x0;
	const float y01 = y1 - y0;

	const float length = Sqrt(x01 * x01 + y01 * y01);

	const float dx = x01 / length;
	const float dy = y01 / length;

rorydriscoll / ParseLua.py

Created February 17, 2012 17:48

Sublime Text 2 plugin to parse lua on the fly

	import sublime
	import sublime_plugin
	import re
	from subprocess import Popen, PIPE

	class ExampleCommand(sublime_plugin.EventListener):

	TIMEOUT_MS = 200

	def __init__(self):

rorydriscoll / lua.sublime-build

Created February 17, 2012 18:03

Sublime Text build system for Lua

	{
	"cmd": ["lua", "$file"],
	"file_regex": "^lua: (...?):([0-9]):?([0-9]*)",
	"selector": "source.lua"
	}

rorydriscoll / Lua.JSON-tmLanguage

Created February 24, 2012 07:02

Lua Grammar for Sublime Text 2. All you need is Lua.tmLanguage (i.e. You don't need the JSON file). Copy Lua.tmLanguage over your existing version and restart Sublime Text.

	{
	"name": "Lua",
	"scopeName": "source.lua",
	"fileTypes": [
	"lua"
	],
	"repository": {
	"general": {
	"patterns": [
	{

rorydriscoll / StringHash.cpp

Created March 1, 2012 01:48

String hash

	template<unsigned int N, unsigned int I>
	struct FnvHash
	{
	__forceinline static uint32 Hash(const char (&text)[N])
	{
	return (FnvHash<N, I - 1>::Hash(text) ^ text[I - 1]) * 16777619u;
	}
	};

	template<unsigned int N>

rorydriscoll / VS.sublime-build

Created July 10, 2012 18:29

Sublime Text Visual Studio

	{
	"cmd": ["C:\\Program Files (x86)\\Microsoft Visual Studio 8\\Common7\\IDE\\devenv.com", "C:\\Users\\rdriscoll\\Desktop\\Foo\\Foo.sln", "/Build"]
	}

rorydriscoll / gist:10013303

Created April 7, 2014 00:54

Inspector window setup

	As a post-build step, run type database compiler to grab the pdb and convert it to a custom type database format (just a list of types, fields and enumerators).

	struct Type
	{
	// Name of the type
	char name[TypeDatabaseBlueprint::Type::kMaxName];

	// Unique id for this type
	Hash id;

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