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  • How can I keep straight alpha during rendering particles?

    - by April
    Rencently,I was trying to save textures of 3D particles so that I can reuse the in 2D rendering.Now I had some problem with alpha channel.Some artist told me I that my textures should have unpremultiplied alpha channel.When I try to get the rgb value back,I got strange result.Some area went lighter and even totally white.I mainly focus on additive and blend mode,that is: ADDITIVE: srcAlpha VS 1 BLEND: srcAlpha VS 1-srcAlpha I tried a technique called premultiplied alpha.This technique just got you the right rgb value,its all you need on screen.As for alpha value,it worked well with BLEND mode,but not ADDITIVE mode.As you can see in parameters,BLEND mode always controlled its value within 1.While ADDITIVE mode cannot guarantee. I want proper alpha,but it just got too big or too small consider to rgb.Now what can I do?Any help will be great thankful. PS:If you don't understand what I am trying to do,there is a commercial software called "Particle Illusion".You can create various particles and then save the scene to texture,where you can choose to remove background of particles. Now,I changed the title.For some software like maya or AE,what I want is called [straight alpha].

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  • How do I install drivers for graphics and sound?

    - by Sid
    I recently shifted to Ubuntu 12.04 from windows 7. I completely removed Windows and then installed Ubuntu. However, I can't find a way to download and install drivers for my video and audio hardware like I used to be able to do in Windows. Could someone please explain to me how software and drivers, in general, are installed on Ubuntu. Is installing through 'Ubuntu Software Center' the only way to install them? My laptop model is: Dell Inspiron 14 N4010 (i5/4gb/500gb). Kindly help. Thanks in advance.

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  • Upgrade Ubuntu 12.04 to 12.10 failed

    - by pre-commit-hook
    I've a problem. Upgrade failed after "Setting new software channels", when Calculating changes. I tried error: Not all updates can be installed An unresolvable problem occurred while calculating the upgrade: E:Unable to correct problems, you have held broken packages. This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. Now i have 1580 packages to update and do not update. Partial system upgrade also fails in the first step. What next? Alternatively, to undo the changes? Thank's to help.

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  • Continuing Education as a Part of Your Job [closed]

    - by Mike
    I work as a programmer for a mid-sized company (about 500 employees) in the medical industry. Before that I worked at a custom software development/consulting company. At both companies programmers were never officially given time to continue their education through taking classes, reading books or blogs, or doing research relevant to the job. At the software development company we were offered some money to pay for a class, but not offered any time off of work to take the class. I have been wondering, do most employers of programmers give time off of work to take a class, read a book, or do job related research? By time off of work I just mean some period of time where you can stop development; it does not have to mean leaving the office. I would be grateful to hear about everyone's experience with this.

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  • how can I start developing games? [closed]

    - by miguelacho
    as you may know very well, every individual related with software development is somehow related to the science or the activity that the program was made for, I am currently working as a programmer for a company that is dedicated to build enterprise software for ensurance business, before this job, I was working with a travel agency developing extra modules for the CRM they use (VTiger), so I can say I am related to ERP/CRM, the fact is, I would like to change this to another activity, like developing video games. I'd like to start developing games, by getting a job or making my own project, but: 1) I have no experience developing video games, is that an obstacle if I want to get a job? if is that so, how can I solve it? 2) if I want to make my own project I will need more people, like a graphic disigner or some others, isn't there a way to make the whole game by my own?

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  • Ubuntu Audio Pitch Shifting filter

    - by user777305
    I'm currently developing a video player software which intended to be an embeedded player. I'm using Java with VLCJ library for the video player. What i'm looking is a way, something to transform the audio output to make the output sound as oldman or a kid (pitch shifting, i guess is the name). VLC have this when enabling time stretch, but the video play speed is affected (slower to get oldman sound, but fast-forward-alike to get kid voice effect. Is there any solutions for this? I don't find this feature on VLC(J), so i think what i need is the audio output of the ubuntu itself (Ubuntu 12.04) to do this job. something like filtering audio output system wide. Any software or setting to do this? it also need to be controllable via command line to provide realtime effect changing. Thanks in advance.

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  • A better way to organize your Silverlight Code Snippets.

    - by mbcrump
    I hate re-writing code. I also hate it when I find a great code snippet on the web and forget to bookmark it or it gets lost in my endless sea of bookmarks. So what do you do to get around this? This is the question that I was asking myself at the end of 2010. How can I get my Silverlight code organized? My requirements for a snippet manager were: Needs to be FREE. An easy way to view XAML/C# code behind together in one “view”. I wanted the ability to store the code snippets in cloud in case my HDD dies. Searchable Keywords to quickly find code snippets. I started looking for a snippet manager that would allow me to do just that and finally found Snippet Manager. Before going any further, I think that one of the most important things to note here is that this software supports 37 languages. It’s not just for Silverlight developers nor C# only guys. The software supports Java, SQL and even COBOL.   Below is a screenshot of the Snippet Manager that shows my Silverlight code snippet. You will notice that I have highlighted two sections. The top part is my XAML and the bottom is my C# code behind. I’ve included a sample below of my code snippets so that you can get an idea of how I organized it. Another thing that’s great about this software is that it supports plain text. I added some connection strings in the TEXT section below.  Once you have finished adding your code snippets, you can store them in the cloud. I created a FTP directory called “snippets” on my FTP Server and hit the upload button once I am finished adding my new codes snippets. This will allow me to use the code snippets on another computer with this application on my USB Key. See screenshots below: Enter your FTP credentials below: Hit the Uploads button on the Toolbar: Login in to your FTP Server and verify the following files are now on the FTP Server: Another great feature of the Snippet Manager is that you can also integrate this into VS2010 by clicking Tools –> External Tools: And setting up your External Screen to point to the Executable: You can now launch it by going to Tools –> Snippet Manager. If you want you could also a shortcut to launch the program with HotKeys. As you can see, this is a nice little program that includes everything needed to organize your code snippets very clean. I didn’t go over every feature but this is something that you might want to download and give it a shot.  Subscribe to my feed CodeProject

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  • 407 Proxy Authentication Required

    - by user38507
    When I try to install a software using Ubuntu Software center I get: Failed to download repository information Check Your Internet connection When I try to do a apt get-install something, I get: 407 Proxy Authentication Required I use a proxy server that requires a user-name and a password. I have set my systems proxy manually, by plugging in the required numbers in the Networks proxy and applied it system wide. I guess the problem now is plugging in my user-name and password. When I use INTERNET via Mozilla, it specifically asks me for my user-name and password.

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  • Application didnt upgraded after upgrading ubuntu to 13.10

    - by Gaurav Dighe
    I upgraded my laptop from ubuntu 13.04 to 13.10. Its working like a charm. But I doubt if software-center, file manager, vlc, etc upgraded. Still I am not getting the new versions of softwares in software-center. I am not able to see any new features in file managers as was noted on many blogs. VLC still showing the old version 2.0.8. Its being said that its upgraded to VLC 2.1 or just a dist-upgrade would do the job. But it didn't. Also I need to know the default applications (with version) provided by ubuntu 13.10 Kindly help.

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  • I need advice on how to debug a cluster

    - by alcor
    I'm the only developer of a complex critical software system, written in Visual C++ 2005. It's deployed on a classical Microsoft cluster scenario (active/passive), that has Windows Server 2003 R2. If a server A goes down, the other one (B) starts and take the ownership of its duties. You have to know that: both servers have the same Microsoft patches/fixes, same hardware, same everything. both servers use the same memory storage (a RAID-6 through fiber channel). this software has a main module who launch the peripheral modules. if a peripheral module crashes, the main module restarts it. When I switch the application in one of the two servers (let's say the B server) two of the peripheral modules of the main applications just started to crash apparently without reason about 2 seconds after the start of the peripheral module. What could I do to analyze/inspect/resolve this weird situation?

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  • Will learning wxpython worth it in future? [on hold]

    - by user108437
    As we know that microsoft has been pushing Windows 8.1 which strongly uses XAML to design the app and for windows desktop mode WPF is another framework (which probably some thinks it fails) However, in old times, developer write windows form software using MFC or something alike that they have to do their own main loop, etc, etc, and I recently loves python and learning python certainly worth it, since there are still ironpython out there that uses .NET, but I am not sure whether my move to also learn wxpython for building windows software that does not requires .NET worth it also i notice wxpython is somehow old and still uses python 2.7, while today, python already version 3.3, beside that the books are old book published in 2007, and there seems no much hype on building windows form without .NET anymore because .NET is mostly preinstalled in new windows version. So my humble question is, whether should I learn python + wxpython or only python? Is there any benefit that I might not notice for capable in writing windows application that does not use .NET?

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  • How to remove corrupted repositories ?

    - by istimsak abdulbasir
    I was in the process of updating 11.04 and came across and error message saying: Reading package lists... Error! E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_natty-security_main_i18n_Translation-en E: The package lists or status file could not be parsed or opened. I tried to remove the damage repository by going to ubuntu software center. There was no option of repository removal. Then I tried synaptic, however I got the same error message stated above. I cannot find software source in 11.04. How do I remove repository from the commandline since that seems to be my only option?

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  • Is it a good idea to create seperate root, home, swap prior to installing Ubuntu or just Installing Ubuntu on a Single partition is a Good Choice?

    - by Curious Apprentice
    I wish to go for dual boot installation with already installed windows 7. Now, should I choose " Install along Side of Windows 7 " or go to advanced and make separate partitions for home, swap ,root etc ? What are the advantages of doing it ? There are similar topics on askubuntu.com. But here I want a complete answer. Edit : What is / and /root ? How i can allocate maximum space for software installation ? (70% for software and 30 % for home)

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  • Allow and Block Programs in Windows 7

    One of the best characteristics of Parental Controls in Windows 7 is how it can be fine tuned to fit your personal needs. Nowhere is this more apparent than in its Allow and block specific programs setting. This setting is especially useful if there are certain programs or applications that you do not want you child to use. Whether it be an Internet browser a game a tool a messaging service or anything else you can think of you have the power to keep it out of your child s hands.... Autodesk Software Download A Free Trial Of One Of Our Construction Software Solutions.

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  • Why Does Unity lag Often That I have To Manually Shutdown/Restart my Core i3 Laptop?

    - by user20655
    I did a fresh install of Ubuntu then do did some upgrades. After my next restart when I try to open Ubuntu Software Center it took about 20 seconds for the window to load then 10 more seconds before it became click able. While doing some installation of software, Unity lags like hell that every time I click any application it takes a few seconds before I can see it. Even GEdit take a lot of time to load. The worst part was when I was doing nothing to my computer. Even on that part, my computer lags. My Laptop is a Brand New Core i3 with 2GB of RAM. Unity should run perfectly on that kind of machine right? BTW: I reinstalled Ubuntu 11.04 for about 5 times now and still nothing changed.

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  • Unneeded RAID recovery

    - by Shinhan
    I have two software RAID 5s. Today when I turned on my server (after it was off for two weeks when I was on vacation), I got the message that the software RAID is degraded and was offered RAID recovery console or boot degraded. No idea what to do in that recovery console btw, so I just exited it. After the boot finished normally I took a peak at /proc/mdstat but there is nothing amiss there. So I took a look at mdadm --detail /dev/md0 (and md1) and again everything looks fine with Failed Devices being 0 both times. Next I took a look at smartctl --alll /dev/sdX for all of the drives and Reallocated_Sector_Ct is 0. (Lots of other zeros, all numbers look to me fine) Anybody have any ideas why I'm getting the RAID recovery message on boot when nothing seems bad?

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  • Microsoft Secret Event: New Tablet Unveiling?

    If you read the headline, you know what everyone thinks it will be: a new tablet computer, that Microsoft will manufacture from beginning to end. Apparently, the company believes it will be better able to compete against Apple if it controls both the hardware and the software. But why choose this location for the announcement? Wired thinks it makes sense if the tablet features Xbox live streaming. That would turn the humble device into something of a media machine. Speaking of the device itself, what kind of specs will this hypothetical tablet have? It's hard to say. Microsoft boasts software...

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  • Les décideurs IT s'occupent-ils assez de la sécurité des terminaux nomades ? Un éditeur sort le classement des vols les plus insolites

    Absolute Software sort un classement des vols d'ordinateurs les plus insolites Les décideurs IT s'occupent-ils assez de la sécurité des terminaux nomades ? Absolute Software, spécialiste canadien des solutions anti-vols des ordinateurs portables, vient de publier une bien curieuse rétrospective de l'année 2010. L'entreprise dresse en effet le top 5 des histoires de vol les plus insolites de l'année, des histoires qui finissent bien, et ce, bien entendu, grâce à ses solutions anti-vols. L'histoire sacrée la plus insolite est celle d'un acheteur malchanceux qui acquière un ordinateur portable d'occasion ? volé. L'acheteur se rend chez un ami policier afin d'utiliser s...

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  • Series On Embedded Development (Part 2) - Build-Time Optionality

    - by user12612705
    In this entry on embedded development, I'm going to discuss build-time optionality (BTO). BTO is the ability to subset your software at build-time so you only use what is needed. BTO typically pertains more to software providers rather then developers of final products. For example, software providers ship source products, frameworks or platforms which are used by developers to build other products. If you provide a source product, you probably don't have to do anything to support BTO as the developers using your source will only use the source they need to build their product. If you provide a framework, then there are some things you can do to support BTO. Say you provide a Java framework which supports audio and video. If you provide this framework in a single JAR, then developers who only want audio are forced to ship their product with the video portion of your framework even though they aren't using it. In this case, support providing the framework in separate JARs...break the framework into an audio JAR and a video JAR and let the users of your framework decide which JARs to include in their product. Sometimes this is as simple as packaging, but if, for example, the video functionality is dependent on the audio functionality, it may require coding work to cleanly separate the two. BTO can also work at install-time, and this is sometimes overlooked. Let's say your building a phone application which can use Near Field Communications (NFC) if it's available on the phone, but it doesn't require NFC to work. Typically you'd write one app for all phones (saving you time)...both those that have NFC and those that don't, and just use NFC if it's there. However, for better efficiency, you can detect at install-time if the phone supports NFC and not install the NFC portion of your app if the phone doesn't support NFC. This requires that you write the app so it can run without the optional NFC code and that you write your install app so it can detect NFC and do the right thing at install-time. Supporting install-time optionality will save persistent footprint on the phone, something your customers will appreciate, your app "neighbors" will appreciate, and that you'll appreciate when they save static footprint for you. In the next article, I'll talk about runtime optionality.

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