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  • Information about rendering, batches, the graphical card, performance etc. + XNA?

    - by Aidiakapi
    I know the title is a bit vague but it's hard to describe what I'm really looking for, but here goes. When it comes to CPU rendering, performance is mostly easy to estimate and straightforward, but when it comes to the GPU due to my lack of technical background information, I'm clueless. I'm using XNA so it'd be nice if theory could be related to that. So what I actually wanna know is, what happens when and where (CPU/GPU) when you do specific draw actions? What is a batch? What influence do effects, projections etc have? Is data persisted on the graphics card or is it transferred over every step? When there's talk about bandwidth, are you talking about a graphics card internal bandwidth, or the pipeline from CPU to GPU? Note: I'm not actually looking for information on how the drawing process happens, that's the GPU's business, I'm interested on all the overhead that precedes that. I'd like to understand what's going on when I do action X, to adapt my architectures and practices to that. Any articles (possibly with code examples), information, links, tutorials that give more insight in how to write better games are very much appreciated. Thanks :)

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  • Graphics card recommendation for dual-HD output?

    - by Graham
    I'm going for a dual-HD monitor setup (HDMI or DVI output), running Ubuntu 11.10 64-bit with Unity 3D. What graphics card / video card should I get? Requirements: Dual-monitor output for DVI (mixed-resolution: 1920x1080 and 1920x1200) Or dual-HDMI output, if it works with Ubuntu Smooth desktop compositing and (Chrome) browser and IDE window rendering At least 60fps on fullscreen glxgears (1920x1200 resolution) Supported and non-buggy behaviour in Unity 3D/Compiz Not looking to play games Smooth fullscreen video playback (just because)

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  • Need a PCIe desktop graphics card for dual-monitor

    - by Graham
    I have a mid-2008 workstation with two HD monitors supporting HDMI and DVI inputs. Since Ubuntu 11.10, I have experienced no end of trouble with my NVidia Quadro NVS 290 in TwinView dual-monitor output. Others have similar desktop TwinView woes. I want a new graphics card. Previously I asked for a graphics card recommendation and response was Nvidia Geforce GTS 450... but really I'm looking for someone who has actually got a working dual-monitor desktop to tell me what card they use so I can get something that is known to work. So please, people who have no-issues with their 64-bit Ubuntu 12.04 Unity 3D desktop spread across two HD-resolution external monitors (either DVI or HDMI connector), and who also run Google Chrome (which throws a spanner due to its own GPU compositing)... please let me know what graphics card you have so I can buy one. Gathering Options These seem to be the Nvidia cards featuring dual DVI. But they all seem to be gaming cards - what has dual-DVI, good support, but is not a massive gaming card? Nvidia GTS 450 (previously recommended) - 2x DVI Nvidia GTX 550 Ti (used by System76) - 2x DVI Nvidia GT 430 (used by System76) - 1xDVI, 1xHDMI Nvidia GT 640 (found on NVidia site) - 1xDVI, 1xHDMI (also GT 620, GT 630) Has anyone had a good desktop dual-monitor Unity 3D experience with ATI cards?

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  • Problem in VS2010 IDE in analog monitor in a dual-monitor setup

    - by Samik R.
    I am using VS2010 Premium with a dual-window setup. One of the monitors is on a digital (DVI) cable and other one is on an analog (VGA) cable. I have noticed that when I put VS2010 in the analog monitor, there are garbled texts and refresh problems while coding and/or scrolling. This does not seem to be the case when I put VS2010 in the digital monitor. Note that, I am not expanding VS IDE to use 2 screens, just making it 1 full screen, either analog or digital. Has anyone else experienced this problem? I also work with VS2008 and have not seen this problem in either screen. VS IDE has started using WPF from the 2010 release, not sure if this has something to do with it.

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  • How do I remove my Windows 7 setup from a Windows/Ubuntu dual-boot?

    - by Tom
    Previously my OS was Window 7 and some day it began to show problems with booting and finally it didn't boot at all. I tried to repair it but it didn't get repaired. Then I installed Ubuntu 14.04 LTS alongside Windows and am impressed much by Ubuntu. So I want to remove all my Windows files. I searched Google to know how to do it and I found OS-Uninstaller. I have some doubts before proceeding with OS-Uninstaller - I need to keep my photos, songs, movies and personal files in my system even if Windows is removed. Normally Windows files are installed in the C Drive. My personal files are not in the C Drive. So will removing Windows files affect my personal files ? Did the OS-Uninstaller affect Ubuntu anyway ? Please note that I want to remove only the Windows installation files(the files added to my system by Windows during its installation). I don't want to change the NTFS partition to any other format since there is a probability that I will install newer version of Windows later.

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  • How to setup whole-disk encryption with dual boot on a MacBook Pro (generation 9,2 with 12.04)

    - by blueyed
    I can install Ubuntu 12.04 on the MacBook when using the "noapic" kernel boot option, using the alternate amd64+mac image (from http://cdimage.ubuntu.com/releases/12.04/release/ ). But after installation the screen turn sblack after trying to boot "Windows" (as named in the boot menu that shows up when holding Option/Alt during startup). I want to use whole-disk encryption and given that only one free partition is available, I have setup LVM to do so: - vg0 contains bootlv and cryptlv - in cryptlv I have setup encryption with another LVM volume group (vg1, which holds swaplv, rootlv and homelv) I have not installed Grub during installation (because I was not sure about the partition) and when trying to install it later on /dev/sda4 (which contains the outer LVM) it complained that it could not determine the file system, and --force did not help either. The black screen / behavior looks similar to starting the installer without enabling the noapic option.

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  • WIN7 and Ubuntu lost after Installing ubuntu 12.04 and win7 dual system ,I have no OS on my laptop now

    - by abos
    Here is the procedure: In the morning I installed ubuntu using a USB directly without config any thing to my win7 system. After install complete, ubuntu installation software tell me to reboot.And everything is just find. While rebooting, there is NO UBUNTU system for me to select,and my laptop go straight to log in using WIN7. NO ubuntu shows on WIN7's configuration(Default System). Log in ubuntu using usb(try ubuntu without installation), I can find ubuntu's filesystem was already there. Formatting the disk on WIN7's disk management, rearranging them to other disk.Still having no trouble with WIN7. In the afternoon try a few times of installation and uninstallation of ubuntu. still shows no sign of selecting ubuntu system. In the evening another trial while installing ubuntu with the third option of: installing ubuntu alongside with INW7, erase win7 and install ubuntu. somethingelse --- my check failed with configuartion for what comes out with the 'something else' option,reboot. And I have no system now with some cmd tips say: Reboot and Select proper Boot Device or Insert Boot Media in selected Boot device and press a key. Files those on win7's orginal file system and Ubuntu filesystem can still be found when I 'try ubuntu without installation'. 5.But I just got no OS when I reboot my laptop normally.

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  • Is it Possible to Repair Boot Record on Windows Vista Partition on Dual Boot Ubuntu 12.04.02 LTS Install?

    - by PasBonRJB
    I recently successfully installed Ubuntu 12.04.02 Desktop as a "side-by-side" on an eMachines ET1641-02w PC; which before had Windows Vista; but was no longer bootable, because the boot sector somehow got trashed. After I installed Ubuntu I can go to Devices/OS and I can access all of my docs, pics, videos, music, etc. on the Windows Vista partition; but I still can't "boot" the Windows partition. I've seen several posts regarding recovering boot sectors using the Boot-repair app; but am wondering if this "boot-repair" is only for the Ubuntu partition. Can I use "boot-repair" to repair the Windows Vista boot sector?

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  • Dual boot UEFI Windows 7 and Ubuntu 12.04 (both 64 bits). W7 entry doesn't appear in GRUB

    - by Joe
    After trying to install both OS during 2 days, I'm confused and getting mad... I have SSD 128 GB and HDD 500 GB both empty. My laptop is Asus K55VM. BIOS support UEFI. What I have done: Install new SSD (Samsung 830 128GB) Use GParted on liveCD to create new table of partitions (GPT) and create 3 partitions (in the SSD) for different purposes: Partition 1: 80 GB (w7); Partition 2: 30 GB (Ubuntu 12.04 -Just / -); Partition 3: 10 GB unused (for future extesion of the other partitions) Install Windows 7 (with UEFI) in Partition 1. This create: /dev/sda1 - 100 MB for System (UEFI boot I guess) - FAT32 /dev/sda2 - 100 MB aprox. for MSR /dev/sda3 - 79.800 MB aprox. for Windows7 data In this point everything works fine. I have W7. Now I install Ubuntu 12.04 amd64 (with UEFI) as follows: Install / in Partition 2 - /dev/sda4 30 GB ext4, and in the hdd I install /home and swap. I select bootloader in /dev/sda1 (where it's supposed to be the UEFI boot). I install updates and reboot. Problem: Now just appears grub menu with Ubuntu entries and not Windows 7. Alternative solution found: When I turn on laptop, before loading GRUB I press ESC key and appear BIOS boot, so I can select to boot the Windows partition, Ubuntu partition, DVD, USB, etc... but I think is not the best way to boot different OS. I've tried: sudo update-grub2 with no success. What can I do??

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  • How to remove Ubuntu from dual boot system with Windows 7?

    - by user71307
    I wish to remove Ubuntu and I'm not quite sure how. I know it has something to do with partitions. I have 3 partitions. 1. OS [683 GB] 2. Recovery [14 GB] 3. Ubuntu 12.04 LTS (E:) I know it says Ubuntu but when I installed Ubuntu I think I put 14 gigabytes for it so I think its the recovery one but I'm not sure. I could have sworn I put more than 700 megabytes for it. I have googled this and I can't seem to find an answer. Any help would be nice.

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  • Show WindowsForm in the center of the Screen (Dual Screen)

    - by serhio
    I have Dual Monitors and want displaying a windows form in the center of the screen. (I have a variable MonitorId=0 or 1). I have: System.Windows.Forms.Screen[] allScreens=System.Windows.Forms.Screen.AllScreens; System.Windows.Forms.Screen myScreen = allScreens[0]; int screenId = RegistryManager.ScreenId; // DualScreen management if (screenId > 0) { // Possede 2-ieme ecran if (allScreens.Length == 2) { if (screenId == 1) myScreen = allScreens[0]; else myScreen = allScreens[1]; } } this.Location = new System.Drawing.Point(myScreen.Bounds.Left, 0); this.StartPosition = FormStartPosition.CenterScreen;

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  • Failed Vista/Ubuntu 12.04 attempt at dual boot. Can only boot Ubuntu now

    - by mathematician1975
    I recently tried installing Ubuntu 12.04 alongside my Windows Vista install. I can boot fine into Ubuntu every time, but now every time I choose to boot into Windows, the process fails completely and restarts (or shuts down) my laptop. Is there anything I can do to recover this. I am very happy with Ubuntu and I do not want to recover my old Vista installation to overwrite it, but I do need to be able to use both OS's. Is it recoverable or should I start from scratch?

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  • Dual boot :Windows 7 partition deleted after Kubuntu 14.04 install...Weird!

    - by user292152
    I've bought two new SSD's in order to install Kubuntu on one and Win 7 on the other one. Before I had Linux Mint and Win7 together one just one SSD. So first I installed win7 as recommended, and then used the guided installer of Kubuntu to install Kubuntu. I selected the second SSD, chose the option "use entire disk and install", but to my surprise after rebooting and selecting win7 boot loader from grub2, I got a prompt that my windows installation is damaged, and I need to run the repair option from the installation disk. So I booted into Kubuntu again, fired up kparted and saw that indeed my windows partition got deleted, except the recovery partition. I don't understand what happened. I am not new to this topic, and this was not my first time installing Ubuntu alongside windows. I have never ever had that problem. What can I do to make sure this won't happen again, so I won't waste another 2 hours of my life? ?? Thanks a lot !

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  • How to avoid problems when installing Ubuntu and Windows 7 in dual-boot?

    - by BlaXpirit
    I want to try out Ubuntu (and hopefully choose it as my primary OS). After looking at many versions of it in VirtualBox and from Live CD, I've finally decided to install it. So I defragmented and shrinked one of the partitions to make room for Ubuntu. My current setup (after shrinking the D: partition): [·100 MB·] [······250000 MB······] [·······600000 MB·······] [··100000 MB···] Reserved Windows 7 system (C:) Data (D:) Free space NTFS NTFS NTFS (for Ubuntu) The Internet (including AskUbuntu) is full of scary stories about Windows not loading after installation of Ubuntu, something about installing GRUB to a wrong partition, etc. As I am a newbie to Linux and Ubuntu, it is very easy for me to do something wrong. Please mention the problems that may appear and explain how to avoid them. Ubuntu version that will be installed: 10.10 Desktop amd64 Please note that I have installed Windows 7 about a year ago, so I have much to lose if something goes wrong. I want to be very careful because there is no way for me to backup all the data.

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  • How to Dual Boot Windows 7 and Ubuntu 12.10?

    - by user108329
    So firstly I tried to install Ubuntu, from the website to run alongside Windows. Went through Wubi etc. Asked me if I wanted to try or Install, I selected install. I selected option to run alongside Windows 7 but when it was partitioning it failed and I only had the fresh install as an option as probably Windows became corrupt then? So I installed Windows again, ran Ubuntu from the livecd, went into gpartition, didn't really know what I was doing but anyhow, resized a partition which was 698gb, one was 100mb, I guessed CD drive. Gparted said it was gonna take three hours, so I took that for meaning Windows was corrupt again. Your help is greatly appreciated. Thanks

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  • .NET access to the GPU for compute purposes

    - by Daniel Moth
    In the distant past I talked about GPGPU and Microsoft's then approach of DirectCompute. Since then of course we now have C++ AMP coming out with Visual Studio 11, so there is a mainstream easier way for developers to access the GPU for compute purposes, using C++. The question occasionally arises of how can a .NET developer access the GPU for compute purposes from their C# (or VB) code. The answer is by interoping from the managed code to a native DLL and in the native DLL use C++ AMP. As a long term .NET developer myself, I can tell you this is straightforward. Sure, there could have been a managed wrapper for C++ AMP, but honestly that is the reason we have interop – it doesn't make much sense to invest resources to solve a problem that is already solved (most developer customers would prefer investments in other areas of Visual Studio!). Besides, interoping from C# to C++ is much easier than interoping to some of the other older approaches of GPGPU programming ;-) To help you get started with the interop approach, Igor Ostrovsky has previously shared the "Hello World" version of interoping from C# to C++ AMP in his blog post: How to use C++ AMP from C# …we then were asked specifically about how to interop from C# to C++ AMP in a Metro style application on Windows 8, so Igor delivered again with this post: How to use C++ AMP from C# using WinRT Have fun! Comments about this post by Daniel Moth welcome at the original blog.

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  • Disable discrete AMD GPU

    - by Smajl
    My notebook has two graphic cards and it suffers from severe overheating after installing Ubuntu (no problem with Windows 7 on the same machine). I figured out that the problem may be in the graphic card and I would like to disable the discrete one. I followed some tutorials on this topic (for example http://planetoss.com/articles/how-to-disable-the-discrete-amd-graphics-card-in-linux/). But the problem is, that after executing the commands, nothing really happens and both GPU are still running. Here is what I have done: smajl@smajl-mini:~$ sudo chown smajl /sys/kernel/debug/vgaswitcheroo/switchsmajl@smajl-mini:~$ echo IGD > /sys/kernel/debug/vgaswitcheroo/switch smajl@smajl-mini:~$ sudo cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:DynPwr:0000:01:05.0 1:DIS-Audio: :Pwr:0000:02:00.1 2:DIS: :DynPwr:0000:02:00.0 smajl@smajl-mini:~$ echo OFF > /sys/kernel/debug/vgaswitcheroo/switch smajl@smajl-mini:~$ sudo cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:DynPwr:0000:01:05.0 1:DIS-Audio: :Pwr:0000:02:00.1 2:DIS: :DynPwr:0000:02:00.0 What am I missing here? Also, more on the overheating topic: 1) Installed TLP 2) updated system 3) set power setting mode to "power save" ...and nothing helps Tried same thing with Linux Mint without success. Is there anything else to try if I manage to disable the second GPU and the problem preserves? Otherwise I would have to get back to win in order not to melt my laptop.. :-/

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  • GPU based procedual terrain borders?

    - by OnePie
    I'm working on a game that preferibly should feature a combination of designed and procedually generated terrain where the designer specifies in somewhat detailed terms what type of terrain a given area will have (grasslands, forest etc...) and then a precedual algorithm takes care of the rest. I'm not talking about minecraft style biomoes, but rather the game map for a strategy game. Each 'area' will not take up that much of the screen, and thus be more akin to a tile whose texture is procedually generated. While procedually generating terrain textures on the GPU are not that difficult, the hard part is making the borders between them look good. Currently, the 'tiles' are large enough to be visible (due to memory constraints mainly, we are talking planetary sized textures for a game taking place in space and on a continental ground view with seamless transitions between them) and creating good borders between them with an algorithm that is fast enough to be useful has proven difficult. Sampling the n-surrounding pixels and using the combiened result did not yield very good borders and was fairly slow on the GPU to boot (ca 12ms for me, that is without any lighning or shading and with very simple terrain texture shaders). So are there any practical known methods to solve this problem?

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  • What are the GPU requirements for XNA 4.0?

    - by Nate Koppenhaver
    I tried to build a sample application using XNA, but I got an error saying that Pixel Shader 1.1 was required, so I got a used Radeon X300 GPU that supports Pixel Shader. I tried to build it again, but I got another error saying that "Your current graphics card does not support the XNA HiDef profile" and would not build. Since that card seems to not be compatible, I guess I need to buy another one. What features should I look for to make sure that it's compatible with XNA?

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  • Yellow Dog Enterprise Linux for GPU computing

    <b>The H Open:</b> "The Japanese Fixstars Corporation, which specialises in software for the Cell processors, has announced the release of Yellow Dog Enterprise Linux (YDEL) 6.2 for CUDA, the first enterprise Linux OS optimised for GPU computing."

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  • La bêta de Chrome 10 est disponible avec un nouveau moteur JavaScript et l'accélération GPU

    La bêta de Chrome 10 est disponible Avec un nouveau moteur JavaScript et l'accélération GPU Google vient de mettre à la disponible des utilisateurs la bêta de Chrome 10. Dans cette nouvelle version, Google améliore encore la vitesse d'exécution du code JavaScript avec l'introduction d'une nouvelle version de sa machine virtuelle JavaScript V8 CrankShaft. CrankShaft apporte une hausse de l'exécution du JavaScript de 66% sur le benchmark V8 par rapport à la version finale de Chrome 9. [IMG]https://lh4.googleusercontent.com/PAxHeU25m_QWU83fp_RAPnrtAaWN_m8XOplzXtMZQW7g5wwGEetXbSmje_y2uZBhZjuaNvJCf6kGPHPSehn0z80mi5h1srPdtpJxpP4wfkqr4uoHTnRoEx2EyPOsx4nw[/IMG]...

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