silvesthu

GPU Optimization for GameDev

Graphics Pipeline / GPU Architecture Overview

• 2011 - A trip through the Graphics Pipeline 2011
• 2015 - Life of a triangle - NVIDIA's logical pipeline
• 2015 - Render Hell 2.0
• 2016 - How bad are small triangles on GPU and why?
• 2017 - GPU Performance for Game Artists
• 2019 - Understanding the anatomy of GPUs using Pokémon
• 2020 - GPU ARCHITECTURE RESOURCES

rygorous

// float->half variants.
// by Fabian "ryg" Giesen.
//
// I hereby place this code in the public domain, as per the terms of the
// CC0 license:
//
//   https://creativecommons.org/publicdomain/zero/1.0/
//
// float_to_half_full: This is basically the ISPC stdlib code, except
// I preserve the sign of NaNs (any good reason not to?)

ushkinaz

#!/usr/bin/env python3
"""
Tests http mirrors of cygwin
"""
import random
import time
from urllib.request import  urlopen
import sys

__author__ = 'Dmitry Sidorenko'

rygorous

#define _CRT_SECURE_NO_DEPRECATE

#include <stdio.h>
#include <string.h>
#include <Windows.h>

// This allocates a "magic ring buffer" that is mapped twice, with the two
// copies being contiguous in (virtual) memory. The advantage of this is
// that this allows any function that expects data to be contiguous in
// memory to read from (or write to) such a buffer. It also means that

rygorous

// half->float variants.
// by Fabian "ryg" Giesen.
//
// I hereby place this code in the public domain.
// 
// half_to_float_fast: table based
// tables could be done in a more compact fashion (in particular, can store tab2 in low word of tab1!)
// but something of a dead end since not very SIMD-friendly. pretty much abandoned at this point.
//
// half_to_float_fast2: use FP adder hardware to deal with denormals.

oleg-andreyev

Copy from http://www.jaspan.com:80/improved_persistent_login_cookie_best_practice

Charles Miller's article, "Persistent Login Cookie Best Practice,"[1] describes a relatively secure approach to implementing the familiar "Remember Me" option for web sites. In this article, I propose an improvement that retains all the benefits of that approach but also makes it possible to detect when a persistent login cookie has been stolen and used by an attacker.

Review

To summarize Miller's design:

When the user successfully logs in with Remember Me checked, a login cookie is issued in addition to the standard session management cookie.[2] The login cookie contains the user's username and a random number (the "token" from here on) from a suitably large space. The username and token are stored as a pair in a database table.

endolith

MIT License

Copyright (c) 2019 endolith

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

rygorous

// float->sRGB8 conversions - two variants.
// by Fabian "ryg" Giesen
//
// I hereby place this code in the public domain.
//
// Both variants come with absolute error bounds and a reversibility and monotonicity
// guarantee (see test driver code below). They should pass D3D10 conformance testing
// (not that you can verify this, but still). They are verified against a clean reference
// implementation provided below, and the test driver checks all floats exhaustively.
//

donny-dont

#ifdef _WIN32
#include <malloc.h>
#endif
#include <cstdint>
#include <vector>
#include <iostream>

/**
 * Allocator for aligned data.

rygorous

// stats.js r9 - http://github.com/mrdoob/stats.js
var Stats=function(){var h,a,r=0,s=0,i=Date.now(),u=i,t=i,l=0,n=1E3,o=0,e,j,f,b=[[16,16,48],[0,255,255]],m=0,p=1E3,q=0,d,k,g,c=[[16,48,16],[0,255,0]];h=document.createElement("div");h.style.cursor="pointer";h.style.width="80px";h.style.opacity="0.9";h.style.zIndex="10001";h.addEventListener("mousedown",function(a){a.preventDefault();r=(r+1)%2;0==r?(e.style.display="block",d.style.display="none"):(e.style.display="none",d.style.display="block")},!1);e=document.createElement("div");e.style.textAlign=
"left";e.style.lineHeight="1.2em";e.style.backgroundColor="rgb("+Math.floor(b[0][0]/2)+","+Math.floor(b[0][1]/2)+","+Math.floor(b[0][2]/2)+")";e.style.padding="0 0 3px 3px";h.appendChild(e);j=document.createElement("div");j.style.fontFamily="Helvetica, Arial, sans-serif";j.style.fontSize="9px";j.style.color="rgb("+b[1][0]+","+b[1][1]+","+b[1][2]+")";j.style.fontWeight="bold";j.innerHTML="FPS";e.appendChild(j);f=document.createElement("div");f.style.position="relati