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Search found 1611 results on 65 pages for 'technique'.

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• Stuck on busybox after a fresh install

  - by user54841

  I installed 11.10 and was getting stuck on Busybox unless I type exit. After grabbing the latest updates it then didn't get stuck on busybox but instead on a black screen of nothingness. I've now reformatted and started again using the exit technique for the time being. I had a search here before posting and none of the answers gave much insight, other than it 'could be a gfx card driver issue'. I'm using new hardware that has no issues with Mint, Win7 or WinXp. BUT note, I'm not dual booting, its a complete fresh install formatting the entire drive. Any help is appreciated as I'd really like to get stuck into Ubuntu. Thanks in advance. -Luke

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• Les &quot;Guru of the week&quot; en français, découvrez (ou redécouvrez) les célèbres problèmes C++ de Herb Sutter

  Les "Guru of the week" en français Découvrez (ou redécouvrez) les célèbres problèmes C++ de Herb Sutter C'est une source d'information que les développeurs expérimentés connaissent bien. Guru of the Week (GotW) est un site créé et alimenté par Herb Sutter entre 1997 et 2003. Le principe est simple : une question technique est posée et les lecteurs interviennent pour répondre à la question en essayant de faire le tour de toutes les difficultés techniques qui pourraient apparaître. Une note sur 10 indique le niveau de difficulté de la question. Cette discussion aboutit à une analyse en profondeur de la problématique posée. Ces questions et réponses ont eu tellement de succès que Herb Sutter a publié plusieurs ouvrages pour regroupe...

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• How is the terrain generated in Commandos and Commandos game clones/look-alikes?

  - by teodron

  The Commandos series of games and its similar western counterpart, Desperados, use a mix of 2D and 3D elements to achieve a very pleasing and immersive atmosphere. Apart from the concept that alone made the series a best-seller, the graphics eye-candy was also a much appreciated asset of that game. I was very curious on what was the technique used to model and adorn the realistic terrains in those titles? Below are some screenshots that could be relevant as a reference for whomever has a candidate answer: The tiny details and patternless distribution of ornamental textures make me think that these terrains were not generated using a standard heightmap-blendmap method.

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• Outline Shader Effect for Orthogonal Geometry in XNA

  - by Griffin

  I just recently started learning the art of shading, but I can't give an outline width to 2D, concave geometry when restrained to a single vertex/pixel shader technique (thanks to XNA). the shape I need to give an outline to has smooth, per-vertex coloring, as well as opacity. The outline, which has smooth, per-vertex coloring, variable width, and opacity cannot interfere with the original shape's colors. A pixel depth border detection algorithm won't work because pixel depth isn't a 3.0 semantic. expanding geometry / redrawing won't work because it interferes with the original shape's colors. I'm wondering if I can do something with the stencil/depth buffer outside of the shader functions since I have access to that through the graphics device. But I don't believe I'm able to manipulate actual values. How might I do this?

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• How should I handle "real time" events in an online strategy game?

  - by Hojat Taheri

  Some online strategy games have real time events. For example when you send troops to attack somewhere, the attack happens at the right time in the future. Checking the database again and again to get the list of attacks happening each second would cause heavy load. Is there any technique to achieve this goal? Another example: You want to attack a village 3 hours away, you send troops and the attack occurs 3 hours later. Should there be an script to check the database at each second to run the query at the specified time?

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• Drupal 8 : intégration du framework Symfony et support du mobile pour le CMS PHP open source

  Drupal 8 : intégration du framework Symfony et support du mobile pour le CMS open source PHP L'événement DrupalCon qui s'est tenu à Munich du 20 au 24 août a permis de dévoiler les nouveautés de la prochaine version du système de gestion de contenu (CMS) open source écrit en PHP. Le développement de Drupal 8 sera essentiellement axé vers le mobile et intégration du framework PHP Symfony, basé sur des composantes PHP réutilisables. Selon Dries Buytaert, créateur de Drupal : « l'intégration de Symfony dans le noyau Drupal 8 va moderniser l'interface utilisateur de Drupal et permettre aux débutants de développer très vite des contenus de qualité sans bagage technique impor...

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• Les pirates peuvent cacher une page entière dans un lien, une méthode de phishing via URI fonctionnant sur Firefox et Opera détaillée

  Les pirates peuvent cacher une page entière dans un lien une méthode de phishing via URI fonctionnant sur Firefox et Opera détaillée L'hameçonnage, une technique utilisée par des pirates pour obtenir les informations personnelles des internautes pour usurper leur identité pourrait se faire sans avoir recours à un site de phishing. Selon un rapport de recherche d'Henning Klevjer, un étudiant en sécurité informatique de l'université d'Oslo en Norvège, les pirates peuvent effectuer des attaques par phishing en intégrant le code complet d'une page Web dans un URI. Un URI (Uniform Resource Identifier) est une chaine de caractères identifiant une ressource sur un réseau. Une de ses impl...

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• Frame Buffer Objects vs calling TexCoord2f?

  - by sensae

  I'm learning the basics of OpenGL with lwjgl currently, and following a guide I've got textured quads that can move around a scene. I've been reading about Frame Buffer Objects, and I'm not really clear on their purpose and their benefit. My understanding is that I'll create a FBO with the texture I'd like, load the FBO, draw a quad, then unload the FBO. What would the technique I'm currently doing for texture management be called, and how does it differ from using FBOs? What are the benefits to using FBOs? How does it fit into the grand rendering scheme of things?

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• Le développement de PHP6 est suspendu, reprendra-t-il un jour ?

  Mise à jour du 22.03.2010 par Katleen Le développement de PHP6 est suspendu, reprendra-t-il un jour ? Après moult déboires, le développement de PHP6 a finalement été arreté. L'implémentation d'Unicode dans le futur langage devanait un véritable casse-tête technique qui aurait motivé ce jeté d'éponge. C'est UTF-16 qui avait été choisi pour le support de l'Unicode dans PHP, mais ce développement s'est avèré trop difficile et la compatibilité très mauvaise. Le travail est donc mis en stand-by pour une durée indéterminée, le temps de se vider la tête pour les programmeurs, puis de réfléchir à une autre solution pour l'intégration d'Unicode. PHP6 sera-t-il achevé un jo...

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• What encryption algorithm/package should I use in a betting game?

  - by user299648

  I have a betting type site where I publish a number (between 0-100) that is encrypted. Then after a period of time, I would review what the number is and prove it with a key to decrypt the encrypted number to prove that I'm not cheating. I also want it to be easily verifiable by an average user. What encryption algorithm/technique/package should I use? I'm no expert on cryptography. There seems to be so many options out there and I'm not sure what to use. python friendly is a plus.

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• GPL/LGPL/MPL non-code content license

  - by user1103142

  I want to use a dictionary (basically a text file, and no code) that is included with an open office spell checking plug-in. The plug-in is under the tri-license GPL/LGPL/MPL which I don't understand. is that legal? If it is illegal, what if I wrote a script that uses the said open office plug-in to generate the dictionary (assuming it's technically possible, the script will generate all possible letter permutations, passes it to the plug-in and saves the correct ones) ? I will be using the dictionary in a closed source commercial application. The dictionary is in a language that has very little resources online, and short of making my own dictionary, there aren't any alternatives. Clarification: The script idea I mentioned above, isn't a weird technique, I would generate a document with all possible words and use open office with the plug-in installed to show spelling mistakes and remove them, isn't this the intended use of the plug-in (spell checking)?

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• Expiring timed actions a good idea?

  - by Bart van Heukelom

  We have an online game where players sometimes have to wait a while (say 30 minutes) before a process they intiated completes. This encourages them to come back later. An example of this is growing crops in Farmville or basically any action in the Sims Play4Free. Now, however, there is the idea to let these processes expire, so if the player doesn't 'reap' them in time (e.g. within 4 hours) they are aborted. I'm a bit sceptical about this. How will this make players come back more often? Is not the reward of reaping the process enough for that? Can we expect players to fit their daily schedule around our game, maybe even set the alarm clock at night? Won't this just cause players to give up on starting these processes in the first place? I realise this may be too subjective for this site, so I'll end with a concrete question: Do (m)any other online free-to-play games employ this technique?

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• Does SEO optimisation count on the responsive side of a site?

  - by Rick Donohoe

  I'm looking at making some SEO optimisation fixes, and at this point I'm sorting out the heading structure and keywords - H1's, H2's etc We have a site where there are a number of similar blocks, and one is always visible, and one is hidden depending on the screen size. This is our method of making a single site responsive. Firstly, how does this technique affect the SEO, and in general does the responsive side of a site matter at all to search engines? What I mean by this is if the site has different content depending on screen sizes, then which content would the search spider crawl?

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• How to implement Fog Of War with an shader?

  - by Cambrano

  Okay, I'm creating a RTS game and want to implement an AgeOfEmpires-like Fog Of War(FOW). That means a tile(or pixel) can be: 0% transparent (unexplored) 50% transparent black (explored but not in viewrange) 100% transparent(explored and in viewrange) RTS means I'll have many explorers (NPCs, buildings, ...). Okay, so I have an 2d array of bytes byte[,] explored. The byte value correlates the transparency. The question is, how do I pass this array to my shader? Well I think it is not possible to pass an entire array. So: what technique shall I use to let my shader know if a pixel/tile is visible or not?

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• How i can sign and/or group a specific set of vertices in a 3D file container like OBJ ? - in Blender

  - by user827992

  I would like to export a 3D model with each part having a name or a label if you will. For example i would like to export a model of an human body and name each part in specifics vertex groups like: left hand, right hand, right foot, head, ears, ... and you got the idea; so i can have a single 3D model that i can explode in various parts if needed. If there is a better technique about how to mark vertex groups in a 3D file please share your solution. As 3D editor i use Blender.

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• NeoAxis 3D disponible en version 1.3, le moteur de jeu ajoute le SSAO et une meilleure gestion du terrain

  NeoAxis 3D et maintenant disponible en version 1.3 La nouvelle version du moteur de jeu apporte le SSAO, des améliorations sur le terrain et plein d'autres surprises C'est en cette période de Noël que NeoAxis 3D, le moteur de jeu multi-plateforme revient avec une hotte fournit en cadeau pour nous, les développeurs. Tout d'abord, cette version estampillée 1.3 apporte le Screen Space Ambient Occlusion (SSAO). Une technique de rendu temps réel qui est grandement utilisée dans l'industrie pour permettre une approximation efficace de l'ambient occlusion (des ombres sont rajoutés selon le buffer de profondeur).. Celui-ci est implémenté tel un effet après rendu (post processing) afin de garder une bonne synergi...

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• Using normals in DirectX 10

  - by Dave

  I've got a working OBJ loader that loads vertices, indices, texture coordinates, and normals. As of right now it doesn't process texture coordinates or normals but it stores them in arrays and creates a valid mesh with the vertices and indices. Now I am trying to figure out how can I make the shader use the correct normal in the array for the current vertex if I can't setnormals() to my mesh. If I were to just use an index in my array of normals corresponding to the index in the vertices, how would I retrieve the current index the shader is processing? BTW: I am trying to write a blinn-phong shader technique. Also when I create the input layout and I've added the semantic NORMAL to it, how would I list the multiple semantics in that single parameter? Would I just separate it with a space? PS: If you need to see any code, just let me know.

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• Error applying iptable rules

  - by user3215

  When I try to use iptables command on one of my Rackspace cloud server, I'm getting the following error. I was trying to apply iptable rules with iptables-apply -t 120 /etc/iptables.rules and iptables-restore < /etc/iptables.rules FATAL: Could not load /lib/modules/2.6.35.4-rscloud/modules.dep: No such file or directory iptables-restore v1.4.4: iptables-restore: unable to initialize table 'filter' Error occurred at line: 2 Try `iptables-restore -h' or 'iptables-restore --help' for more information. How could I fix this?. Anybody has any technique?

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• Testing what is happening inside your BizTalk solution

  - by Michael Stephenson

  As BizTalk developers we all know that one of the common challenges is how to test your BizTalk solution once it is deployed to BizTalk. Hopefully most of us are using the BizUnit framework for testing, but we still have the limitation that it's a very Black Box test. I have put together a sample and video to show a technique where I'm using the Logging Framework from the BizTalk CAT Team at Microsoft and where by BizUnit test is able to make assertions against the instrumentation going through the framework. This means that I can test for things happening such as the fact a component was executed or which branch of an orchestration was executed by simply using my normal instrumented code. I've put the sample and video for this on the following codeplex site: http://btsloggingeventsinbi.codeplex.com/ The video should also be on cloud casts fairly soon too.

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• SS7(M3UA, SCCP, TCAP, MAP) Stack

  - by Ammar Hameed

  I'm building an open source SMSC from scratch; it's almost finished, The SRI and the forwardSM operations are working, but I still have few things to do for the receiving part. I've built the SS7 stack already, but I'm using DB for saving the TCAP transactions IDs to be updated later to get/generate responses. My approach is this: I created memory table (heap table), saved the TCAP TID in the database, then compared the received TCAP TID with the TIDs saved in the database and then decide whether to end the TCAP session or continue. What is the best way to implement it? I'm thinking of doubly linked list that holds the TCAP TID. Am I going towards the right direction, or should I use another technique other than database or D-linked list? Should I leave it as it is, and let the database do the job for saving the TIDs? Please note that I'm using SCTP implementation available on Linux (lsctp) as a transport protocol, the language I'm using is C and the DB is MYSQL.

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• Journée portes ouvertes à l'EPITA le 22 janvier pour découvrir le campus et les cursus de l'école d'ingénieur pour l'informatique

  Journée portes ouvertes à l'EPITA le 22 janvier Pour découvrir le campus et les cursus de l'école d'ingénieur pour l'informatique L'EPITA se classe régulièrement dans le Top 5 des meilleures écoles d'ingénieur pour l'informatique des Baromètres Sofres . L'EPITA est un établissement d'enseignement supérieur technique privé inscrit au Rectorat de Créteil. Son Titre d'Ingénieur Diplômé est habilité par la CTI (Commission des Titres de l'Ingénieur). « Le succès des anciens élèves auprès des entreprises montre que l'EPITA a su s'imposer comme un acteur majeur des nouvelles technologies », se félicite le groupe. La singularité de l'enseignement de cette école repos...

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• NVidia control panel SSAO not working

  - by János Turánszki

  I am just before implementing screen space ambient occlusion in my game, but first I wanted to try enabling it from NVidia control panel only to find out that it is greyed out so that I can not enable it. With this I could enable SSAO for some other games, but not every one. I know this technique requires the depth buffer and (optionally) a normal map texture to sample information from which I already have access to given I have a deferred renderer working. After that I actually thought to roll back to a previous version of my game which still uses forward rendering so the depth buffer is actually bound to the backbuffer which I render to from the get-go so that maybe the NVidia control panel would somehow make use of it. It was not working with forward rendering either. (I also tried FXAA in the control panel and that works - but it doesn't need any depth or normal texture) So my question is that how can I enable this function so that it would work by enabling it in the NVidia control panel?

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• Take Camera Phone Macro Photos with a Cheap Laser Pointer Lens

  - by Jason Fitzpatrick

  Inside those cheap laser pointers you see in the grocery store checkout line there’s a handy little plastic lens that, when slapped on your phone’s camera, makes it easy to take macro photographs. In this tutorial, they take the lens from a laser point and secure it using tape and a bobby pin. An alternative method to achieve the same end (and with a higher quality lens) is to dismantle a CD/DVD drive to source the lens and use painter’s tape to hold the lens in place–this is the technique I used several years ago, check out the tutorial video here. Laser Pointer Macro Lens [via Apartment Therapy] How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It

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• How to give parallax backgrounds more depth

  - by user28015

  I have 3 tiled images of some sort of galaxy/space in the background of a 2D Game: The first one has an alpha of 100%, the second an alpha of 80% and the last one has an alpha of 60%. I scroll the the one in the background slower than the other ones of course. classic parallax. In the foreground I have some particles flying towards the player to simulate some dust / stars flying by. (I know that stars don't fly by, but I think we all have seen this in a lot of games). But I can't quite achieve the depth effect I am looking for. I want it to look "deeper". I did read something about using blending modes for the backgrounds, but that would require to render them as objects right? So the question is: What is a good technique to do a scrolling parallax background in GameMaker?

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• Oracle rend payant Solaris dont les nouveautés ne seront plus implémentées dans OpenSolaris : fin d

  Mise à jour du 31/03/10 Oracle rend Solaris payant Les nouveautés de l'OS ne seront plus implémentées dans OpenSolaris : vers la fin du système libre de Sun ? Solaris n'est plus gratuit. L'OS de Sun, fondé sur UNIX, est très répandue sur le marché des serveurs. Depuis le rachat de la société par Oracle, l'OS avait été rebaptisé OS Oracle Solaris. Cette fois-ci le changement est un peu plus profond puisque ce sont les conditions d'utilisations du système qui changent radicalement. OS Oracle Solaris est disponible en version d'évaluation gratuite pendant 90 jours puis l'adhésion à un contrat de support technique devient obligatoi...

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