lights

Ogre2.1大量光源渲染 　　Ogre2.1不是采用现在大部分引擎所用的延迟渲染，而是采用一种前向渲染的改进技术，理论基本来自于Forward+,见如下。 　　 http://www.klayge.org/?p=1895 　　 http://www.ogre3d.org/2015/03/05/ogre-progress-report-february-2015 　　第一个链接是Forward+技术的原理，第二个是讲Ogre2.x的Forward3D实现，和正规的Forward+不同之处，以及没有默认采用延迟渲染的原因，顺便也指出，一样可以采用延迟渲染，并且还能使用Forward3D生成的数据，实现Tiled-based Deferred Shading，相比Ogre1.x中的延迟渲染例子，现ogre2.1中实现更方便与高效，大致看下Ogre2.1的渲染流程(更高效的多线程，统一Cull,SOA,SMID)就能明白。 　　为了巩固对延迟渲染的理解，解释下Ogre1.x中延迟渲染例子，对于这个例子我自认为是Ogre1.x中的比较有难度的一个例子，因为关联的东东太多，如渲染流程以及事件在流程中的位置，合成器技术，自定义合成器渲染的实现，RTT，MRT等等，原来一直想单独用一篇来说明Ogre1.x中的延迟渲染例子，在Ogre2.1出来后，这个想法也就没了，简单说下这个例子，在这不讲理论

题目描述 Farmer John tries to keep the cows sharp by letting them play with intellectual toys. One of the larger toys is the lights in the barn. Each of the N (2 <= N <= 100,000) cow stalls conveniently numbered 1..N has a colorful light above it. At the beginning of the evening, all the lights are off. The cows control the lights with a set of N pushbutton switches that toggle the lights; pushing switch i changes the state of light i from off to on or from on to off. The cows read and execute a list of M (1 <= M <= 100,000) operations expressed as one of two integers (0 <= operation <= 1). The

China LED Holiday Light Factory & Ninghai County Haohua Electronic Appliance Co., Ltd. pointed out: Festival lights can literally and emotionally illuminate the entire season, but there is also a potential risk of fire and electric shock danger. Before installing holiday lighting, please spend extra time on security checks to protect people and property. Reduce the risk of fire and electric shock from festival lights by performing the following recommended steps: Use indoor and outdoor lighting that complies with safety standards and has been tested for safety by a recognized testing

B. Om Nom and Dark Park Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/526/problem/B Description Om Nom is the main character of a game "Cut the Rope". He is a bright little monster who likes visiting friends living at the other side of the park. However the dark old parks can scare even somebody as fearless as Om Nom, so he asks you to help him. The park consists of 2 n  + 1  - 1 squares connected by roads so that the scheme of the park is a full binary tree of depth n . More formally, the entrance to the park is located at the square 1. The exits out of the park

In the past 100 years, lighting has gone a long way. LED decorative lighting is now designed to meet any visual need. Consumers find it difficult to choose between traditional and modern styles. These options are easily overwhelmed when choosing lights for home décor. Although the trend is in and out of such things, the technology is only expanding. In order to narrow the scope, LED decorative light suppliers recommend that you use LED neon design. These lights have significant advantages over traditional glass neon lights. Don't just follow the trend, go ahead and know why you make a choice.

题目 传送门 分析： 跑着去学了一波异或方程组高斯消元 （全世界就我不知道系列。。） 然后我们可以列方程组诶 (a[1][x]&x[1])^(a[2][x]&x[2])^...^(a[n][x]&x[n])=b[x] a[i][x]表示i号开关是否与x号灯相连，x[i]即为此开关开不开，b[x]为灯泡末状态，此题均为1 然后就会成为一个行列式 由于a[i][j]的值为0或1 所以消元时直接行与行异或就好了，不会影响结果 然后会解出一个上三角 但是a[i][i]可能会等于0，表示这个位置填0和1都有解 于是这种地方可以直接爆搜出答案 dfs的过程就是高斯消元最后取ans的过程了。。。 讲不清楚看代码2333 #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> #include<queue> #include<map> #define maxn 55 #define INF 0x3f3f3f3f #define MOD 1000000007 using namespace std; inline int getint() { int num=0,flag=1;char c; while((c=getchar())<'0'||c>'9')if(c=='-')flag=-1; while(c>='0'

LED Christmas lights are not very cheap, but you should know that LED lights can be used for more than 10 years. In this case, this may be a good buying option, especially for those who are not used to moving houses every few years. First, calculate the cost of an LED light and compare it to an incandescent light that typically lasts no more than 6 years, and you might conclude that buying an LED is really worth it. In the long run, you can save dollars because LEDs are more energy efficient. In fact, traditional incandescent light bulbs require nearly ten times more energy than LED lights.

Obviously, LED holiday lights are leading the competition in economical Christmas decorations, but this is not their only benefit. E.g: With traditional lights, you can only connect four to five strings of lights together on one socket, limiting the number of lights that can be safely used in one area. With LED lights, you can safely connect more than 20 light strings together. If the ultimate decoration is your vacation dream, then LED lights are definitely the safer solution. LED Christmas lights have a wider range of colors, usually brighter than incandescent strings, and even provide

The development of emergency lighting further demonstrates how buildings can be digitally transformed to achieve cleaner, smarter cities. Due to the software and services used to store, process and analyze the collected sensor data, the lighting itself will become more technologically advanced, which has helped emergency lighting transform into today's status and continue to help future industry innovation. In any study of emergency lighting, there is often an argument about the type of lighting that operates effectively. Some people like fluorescent lights, while others like LED lighting.

In the long and interesting history of Christmas lights, nothing is brighter than light-emitting diodes (or LEDs). But what makes LED Christmas lights such a powerful light source? And how to create colors in the LEDs? LEDs not only make more efficient use of the power they consume, but they also tend to be brighter due to this efficient use of electrical energy. But now, this is not true news for anyone. Most people know that using LEDs can save electricity, and they now have more illumination than incandescent lights. But what about those colors? Is the color created in the LED the same as a