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Search found 22 results on 1 pages for 'janos harsanyi'.

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  • Moving around/avoiding obstacles

    - by János Harsányi
    I would like to write a "game", where you can place an obstacle (red), and then the black dot tries to avoid it, and get to the green target. I'm using a very easy way to avoid it, if the black dot is close to the red, it changes its direction, and moves for a while, then it moves forward to the green point. How could I create a "smooth" path for the computer controlled "player"? Edit: Not the smoothness is the main point, but to avoid the red blocking "wall" and not to crash into it and then avoid it. How could I implement some path finding algorithm if I just have basically 3 points? (And what would it make the things much more complicated, if you could place multiple obstacles?)

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  • Read-only filesystem

    - by János Harsányi
    I've resized a partition (ext4) from a Live CD with GParted, and after reboot it says that the file system is read-only. I've rebooted again from the CD and checked it with GParted with no errors. How could I find out why does it re-mount the file system in read-only mode? edit: It starts normally, but after some time, the "/" mount point gets remounted with read only settings, so I think it does have errors eventually. Is there any other way to repair it?

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  • Linux kernel 3.5.0-18 update is not working with NVIDIA driver 304.60

    - by Janos Fejos
    I have Ubuntu 12.10 64 bit and a Nvidia card GT430 and installed 304.60 Linux driver manually and it worked beautifully until the latest Ubuntu update which got modified to 3.5.0-18 Kernel. Everything has gone: launcher, windows I can't move them it got USELESS. I tried to run the previous kermel 3.5.0-17 with which the driver was working well. I gto the same desktop. USeless - So the problem is something else I guess but it has to do with the update that's for sure- Any idea what to do? Now I have to switch back to Windows 7 which I don't want in order to able to work until an update will come up.

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  • How to blend multiple normal maps?

    - by János Turánszki
    I want to achieve a distortion effect which distorts the full screen. For that I spawn a couple of images with normal maps. I render their normal map part on some camera facing quads onto a rendertarget which is cleared with the color (127,127,255,255). This color means that there is no distortion whatsoever. Then I want to render some images like this one onto it: If I draw one somewhere on the screen, then it looks correct because it blends in seamlessly with the background (which is the same color that appears on the edges of this image). If I draw another one on top of it then it will no longer be a seamless transition. For this I created a blendstate in directX 11 that keeps the maximum of two colors, so it is now a seamless transition, but this way, the colors lower than 127 (0.5f normalized) will not contribute. I am not making a simulation and the effect looks quite convincing and nice for a game, but in my spare time I am thinking how I could achieve a nicer or a more correct effect with a blend state, maybe averaging the colors somehow? I I did it with a shader, I would add the colors and then I would normalize them, but I need to combine arbitrary number of images onto a rendertarget. This is my blend state now which blends them seamlessly but not correctly: D3D11_BLEND_DESC bd; bd.RenderTarget[0].BlendEnable=true; bd.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA; bd.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA; bd.RenderTarget[0].BlendOp = D3D11_BLEND_OP_MAX; bd.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_ONE; bd.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO; bd.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_MAX; bd.RenderTarget[0].RenderTargetWriteMask = 0x0f; Is there any way of improving upon this? (PS. I considered rendering each one with a separate shader incementally on top of each other but that would consume a lot of render targets which is unacceptable)

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  • Git workflow for small teams

    - by janos
    I'm working on a git workflow to implement in a small team. The core ideas in the workflow: there is a shared project master that all team members can write to all development is done exclusively on feature branches feature branches are code reviewed by a team member other than the branch author the feature branch is eventually merged into the shared master and the cycle starts again The article explains the steps in this cycle in detail: https://github.com/janosgyerik/git-workflows-book/blob/small-team-workflow/chapter05.md Does this make sense or am I missing something?

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  • What is a good toy example to teach version control?

    - by janos
    I am looking for practical examples to use when teaching version control. Breaking down the material to basic concepts and providing examples is an obvious way to teach version control, but this can be very boring, unless the examples are really practical or interesting. One idea I have is customizing a wordpress theme. I use wordpress a lot and no theme is ever perfect, so I typically just put the theme directory in version control using any dvcs and start recording changes. The problem with this example is that not many people in the audience may be familiar with wordpress, let alone have shell access to a wordpress site to try out the commands. Preparing a mock site and giving access to everyone is also not an option for me. I need a "toy example" that can be interesting to a broad audience of software developers, and something they can try on their own computers. The tutorial will use a dvcs, but the practical example I'm looking for is only to teach the basic features of version control, ignoring the distributed features for the moment. (Now that I think of it, instead of a mock site, a customized live cd might do the trick...) Any better ideas?

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  • In centralized version control, is it always good to update often?

    - by janos
    Assuming that: You are in a team developing some software. Your team is using centralized version control in the development process. You are working on a new feature which will surely take several days to complete, and you won't be able to commit before that because it would break the build. Your team members commit something every day that affects some of the files you're working with for your fancy new feature. Since this is centralized version control, you will have to update your local checkout at some point: at least once right before committing the new feature. If you update only once right before your commit, then there might be a lot of conflicts due to the many other changes by your teammates, which could be a world of pain to resolve all at once. Or, you could update often, and even if there are a few conflicts to resolve day by day, it should be easier to do, little by little. Can we say that it is always a good idea to update often?

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  • How can I mark a pixel in the stencil buffer?

    - by János Turánszki
    I never used the stencil buffer for anything until now, but I want to change this. I have an idea of how it should work: the gpu discards or keeps rasterized pixels before the pixel shader based on the stencil buffer value on the given position and some stencil operation. What I don't know is how would I mark a pixel in the stencil buffer with a specific value. For example I draw my scene and want to mark everything which is drawn with a specific material (this material could be looked up from a texture so ideally I should mark the pixel in the pixel shader), so that later when I do some post processing on my scene I would only do it on the marked pixels. I didn't find anything on the internet besides how to set up a stencil buffer and explaining the different stencil operations. I was expecting to find some System-Value semantics like SV_Depth to write to in the pixel shader (because the stencil buffer shares the same resource with the depth buffer in D3D11), but there is no such thing on MSDN. So how should I do this? If I am misunderstanding something please help me clear that up.

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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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  • Changing the passphrase of a private key in Windows

    - by janos
    I have a private key in Windows, created by puttygen.exe. I used default options to save it, the tool automatically gave it a .ppk extension, and it looks like this: PuTTY-User-Key-File-2: ssh-rsa Encryption: none Comment: rsa-key-20130627 Public-Lines: 4 AAAAB3NzaC1yc2EAAAABJQAAAIBnvvAhyMs4rdlQd4OdajDw4jIPi6vIjrWjt4l4 5C3wHOSxyQQdtSA8XT3K0rSBnNtZRJTb5mfix67qQe3pHCTMSNsYIaBi8xQJHZRa RxdY+1VtGnSlEma8KO2We9eDNCGiwrRTUzqvTiGCnzU0pF1MXxu3ObISJcpqv+sQ 1GB0cw== Private-Lines: 8 AAAA.......... Private-MAC: XXXXXXXXX Now I need to change the passphrase, and reading from the docs it seemed simple enough: puttygen.exe -P key.ppk But this pops up a window with this error: PuTTYgen Error: Couldn't load private key (unable to open file) I also tried to change the passphrase using ssh-keygen that comes with Git Bash: ssh-keygen.exe -p -f key.ppk It asks for my old passphrase, but then it gives me the error Bad passphrase. Which is not true, because I can add the key in pageant.exe, and I am not mistyping the passphrase... Anything else I can try to change or drop the passphrase?

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  • fatal: No HEAD commit to compare with (yet)

    - by Kukoda János
    I am newbie with git. It tried this tutorial, but after the command, i get this error: [root@WL-0022150E7BD4 alma]$ git diff --cached fatal: No HEAD commit to compare with (yet) I created two file in the current directory. I dont undersitand, it is the first step in the tutorial.

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  • Hazelcast Distributed Executor Service KeyOwner

    - by János Veres
    I have problem understanding the concept of Hazelcast Distributed Execution. It is said to be able to perform the execution on the owner instance of a specific key. From Documentation: <T> Future<T> submitToKeyOwner(Callable<T> task, Object key) Submits task to owner of the specified key and returns a Future representing that task. Parameters: task - task key - key Returns: a Future representing pending completion of the task I believe that I'm not alone to have a cluster built with multiple maps which might actually use the same key for different purposes, holding different objects (e.g. something along the following setup): IMap<String, ObjectTypeA> firstMap = HazelcastInstance.getMap("firstMap"); IMap<String, ObjectTypeA_AppendixClass> secondMap = HazelcastInstance.getMap("secondMap"); To me it seems quite confusing what documentation says about the owner of a key. My real frustration is that I don't know WHICH - in which map - key does it refer to? The documentation also gives a "demo" of this approach: import com.hazelcast.core.Member; import com.hazelcast.core.Hazelcast; import com.hazelcast.core.IExecutorService; import java.util.concurrent.Callable; import java.util.concurrent.Future; import java.util.Set; import com.hazelcast.config.Config; public void echoOnTheMemberOwningTheKey(String input, Object key) throws Exception { Callable<String> task = new Echo(input); HazelcastInstance hz = Hazelcast.newHazelcastInstance(); IExecutorService executorService = hz.getExecutorService("default"); Future<String> future = executorService.submitToKeyOwner(task, key); String echoResult = future.get(); } Here's a link to the documentation site: Hazelcast MultiHTML Documentation 3.0 - Distributed Execution Did any of you guys figure out in the past what key does it want?

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  • Why are so many DBCC commands undocumented?

    - by DBA
    Paul Randal of SQLskills.com does a great job of answering the question of why there are so many undocumented DBCC commands in his post Why are so many DBCC commands undocumented? I would like to go on to say that not only does this apply to the DBCC commands but is some respect to all parts of SQL, other Servers, IDE's, Operating Systems, just about everywhere. There is always something that just does not make it into the official documentation. And as Paul points out probably never will make it. That could be why there are so many "Tips & Tricks" types of books, blog post, etc. everywhere you look. And I also agree with Janos's comments on Paul's post, which was "I'm fine with them undocumented. All of us who need to use these commands know where to find "documentation" and whom to ask ". Till later,

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  • HOUG konferencia 2010., kapunyitás ma!

    - by Fekete Zoltán
    MA KEZDODIK! A helyszínen még lehet regisztrálni, azaz a Ramada Hotel & Resort Lake Balaton szállodában. 2010. március 22-24 között találkozzunk Balatonalnádiban! A mai napon szakmai programokkal elkezdodik a HOUG Konferencia 2010. A magyarországi Oracle-felhasználók éves rendezvényén sok felhasználó számol be Oracle rendszerérol, tapasztalatairól, a rendszerek gazdasági hasznosságáról. A konferencia programja. - kedden az államigazgatási szekcióban a következo eloadást tartom: Ideális nagy teljesítményu hibaturo környezet felhasználási lehetoségei a kormányzati projektekhez - Oracle Exadata, Database Machine - szerdán az Üzleti intelligencia és adattárház szekció vezetpje leszek, továbbá fogok eloadást tartani a következo címmel: Az ideális OLTP és DW környezet az Oracle adatbázisoknak, Oracle Exadata, Database Machine Szerdán számos érdekes eloadást fogunk meghallgatni: - Management Excellence - az Oracle Hyperion EPM alkalmazásokkal Ribarics Pál - SZEZÁM - Üzleti intelligencia megoldások a Magyar Nemzeti Vagyonkezelo Zrt. életében Holl Zoltán - JD Edwards EnterpriseOne és Oracle BI EE, a Fornetti recept: lekvár a sütibe Bitter Tibor (E-best Kft.), Király János (Fornetti Kft.) - Tárházak a gázra lépve (új utak felé) Kránicz László (OTP Bank Nyrt.) - Oracle-Hyperion Interactive Reporting végfelhasználói, ad-hoc lekérdezo eszköz bevezetése a KSH-ban és a használat tapasztalatai Pap Imre (Központi Statisztikai Hivatal) - Az ideális OLTP és DW környezet az Oracle adatbázisoknak Fekete Zoltán (Oracle Hungary Kft.) - BI Suite bevezetés az MKB-Euroleasing-nél Mitró Péter (MKB Euroleasing Autóhitel Zrt.) - Essbase alapú tervezõ rendszer a Bay Zoltán Alkalmazott Kutatási Közalapítványnál Hoffman Zoltán (Bay Zoltán Alkalmazott Kutatási Közalapítvány), Szabó Gábor (R&R Software Zrt.) - Adattárház-megvalósítás Oracle alapokon a National Instrumentsnél Vágó Csaba, Németh Márk (National Instruments Hungary Kft.) - Banki adatpiac bevezetése adattárház alapokon Dési Balázs (HP Magyarország Kft.)

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