esmooov

The Secret Passions of Git Checkout

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The Hand of God

Git checkout can do almost anything ... or, at least, many things. It can switch branches. It can mix and match branches. It can resolve merge conflicts. It can give you a scratchpad to test things. It can even be used to interactively patch files. It's so powerful because it's so abstract. But much like numinous mystics, abstraction makes it confusing.

Basically git checkout does two things:

rygorous

#include <immintrin.h>
#include <intrin.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

union Mat44 {
    float m[4][4];
    __m128 row[4];
};

aras-p

// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

jlblancoc

REM =======================================================================
REM Batch (.BAT) script (Windows) to delete all temporary files after
REM  compiling a project with Microsoft Visual Studio (Visual C++) or GCC.
REM 
REM   Warning: It also deletes the debug databases, needed to "step into"
REM    from a debugger. These files may be really *large*, but if you think
REM    you will need them, remove the file for "*.pdb" below.
REM
REM Usage: 
REM  - Open a terminal (Windows-key + R , type "cmd", press ENTER)

selfshadow

// Blending when n1 and n2 are already 'unpacked' and normalised
float3 blend_rnm_unpacked(float3 n1, float3 n2)
{
    float3 t = n1.xyz + float3( 0,  0, 1);
    float3 u = n2.xyz * float3(-1, -1, 1);
    float3 r = (t/t.z)*dot(t, u) - u;
    return r;
}

rygorous

This just got linked to by the Y combinator news account, without proper context,
so a brief introduction: A month ago (end of May / early June 2014) I had a
Twitter conversation with a bunch of acquaintances. One tweet in the middle
of that thread, with obligatory hyperbole, was me saying that I think VR is
bad news.

Well, that part of the thread (but not the rest that provides context) recently
got retweeted, and then someone asked me if I could explain what I mean by that,
and because Twitter is a great platform for delivering 140 character slogans and
not so great for lengthy explanations, I wrote this. So, obligatory disclaimer:

dwilliamson

float3 PositionToOctahedron(float3 position)
{
	// Normalize input position to unit sphere to simplify required ops
	float3 P = normalize(position);

	// Get octant index
	float3 side = P >= 0 ? 1 : 0;
	float octant_index = side.x + side.y * 2 + side.z * 4;

	// Project onto octahedron face, then onto each x/y plane

nlguillemot

#include <Windows.h>
#include <GL/gl.h>

#pragma comment(lib, "OpenGL32.lib")

LRESULT CALLBACK MyWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_CLOSE:

ocornut

Memory Optimization (Christer Ericson, GDC 2003)
http://realtimecollisiondetection.net/pubs/GDC03_Ericson_Memory_Optimization.ppt

Cache coherency primer (Fabian Giesen)
https://fgiesen.wordpress.com/2014/07/07/cache-coherency/

Code Clinic 2015: How to Write Code the Compiler Can Actually Optimize (Mike Acton)
http://gdcvault.com/play/1021866/Code-Clinic-2015-How-to

n3dst4

How to rename solutions and projects in Visual Studio

1. Don't.

How to rename solutions and projects that were created in Visual Studio

1. Close Visual Studio and don't open it again until I tell you. Visual Studio is not competent at renaming things.
2. Assuming you're using git, clean the working folder to remove anything that's not in version control (this will help the search-and-replace step because it won't have to go through a bunch of generated files)

git clean -fdx