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• Mapping a 3D texture to a standard hollow-hull 3D model

  - by John

  I have 3D models which are typical hollow hulls. If such a model also had a 3D volumetric/voxel texture map then given a point P inside such a model, I'd like to be able to find its uvw coordinates within the 3D texture. Is this possible by simply setting 3D texcoords on my existing mesh or does it have to be broken up into polyhedra? Is there a way to map a 3D texture onto a mesh without doing this?

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• Simple 3D games to make for learning 3D game development (Unity)

  - by Vandell

  I have some experience doing 2D games. But I struggle so much doing anything in Unity, so I'´ve decided to make some simple 3D games as a way to learn this 'new dimension' in game development but I'm having a hard time choosing games to clone (a task that's relatively easy to do for 2D). What games should a 2D developer make to break in 3D and why? I'd like also note that I have no problem with the scripting languages.

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• can't login to Unity always login to Unity 2D

  - by Goddard

  I select Ubuntu on login and it always loads Unity 2D. I ran /usr/lib/nux/unity_support_test -p And got this error X Error of failed request: BadWindow (invalid Window parameter) Major opcode of failed request: 137 (NV-GLX) Minor opcode of failed request: 4 () Resource id in failed request: 0x21f Serial number of failed request: 42 Current serial number in output stream: 42 I'm using 12.04 with all the latest updates. nvidia-installer --version nvidia-installer: version 295.53 ([email protected]) Sat May 12 00:34:26 PDT 2012 The NVIDIA Software Installer for Unix/Linux. This program is used to install, upgrade and uninstall The NVIDIA Accelerated Graphics Driver Set for Linux-x86_64. Copyright (C) 2003 - 2010 NVIDIA Corporation.

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• Unity launcher doesn't appear in VNC session

  - by Lorin Hochstein

  I'd like to have a unity desktop accessible via VNC on a precise server machine I have running. I installed the ubuntu-desktop package. I'm launching a VNC session with the following in my ~/.vnc/xstartup file: !/bin/sh xrdb $HOME/.Xresources xsetroot -solid grey export XKL_XMODMAP_DISABLE=1 gnome-session --session=ubuntu-2d What could the issue be here? The content of my /usr/share/gnome-session/sessions/ubuntu-2d.session file (this is what 12.04 puts there by default) is: [GNOME Session] Name=Ubuntu 2D RequiredComponents=gnome-settings-daemon; RequiredProviders=windowmanager;panel;shell; DefaultProvider-windowmanager=metacity DefaultProvider-panel=unity-2d-panel DefaultProvider-shell=unity-2d-shell DesktopName=Unity I don't know anything about unity-2d, but I guessed that the default session was not configured to use the launcher. I tried making the following modifications: [GNOME Session] Name=Ubuntu 2D RequiredComponents=gnome-settings-daemon; RequiredProviders=windowmanager;panel;shell;launcher; DefaultProvider-windowmanager=metacity DefaultProvider-panel=unity-2d-panel DefaultProvider-shell=unity-2d-shell DefaultProvider-launcher=unity-2d-launcher DesktopName=Unity But I got the following warning in my VNC log file: gnome-session[10354]: WARNING: Unable to find default provider 'qr' of required provider 'launcher' And the VNC session wouldn't even start with that configuration.

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• upgraded "Compiz' and "Unity", now no Unity 3D on screen

  - by user18432

  Today when I logged in to my Ubuntu 12.04, the update manager told me of some upgrades. Compiz and Unity were in those upgrades. After I installed the upgrades, I can no longer get the Unity panel on the left side of screen or the systray at the top of screen. I now have to run Ubuntu 12.04 with Unity 2D. My laptop is a HP Pavilion dv9000 with Nvidia GeForce Go 7600 video. I tried to run "unity --reset" but it says there are serious issues with compiz. I have cut & pasted the read out from the terminal below. [09:35:02] xxxxxxx@L01U1204:~$ unity --reset unity-panel-service: no process found Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...no Backend : gconf Integration : true Profile : unity Adding plugins Initializing core options...done compiz (core) - Warn: failed to receive ConfigureNotify event on 0x2e00004 compiz (core) - Warn: failed to receive ConfigureNotify event on 0x580005a compiz (core) - Warn: failed to receive ConfigureNotify event on 0x3600006 compiz (core) - Warn: failed to receive ConfigureNotify event on 0x3200255 compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1600002 compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1400002 Initializing composite options...done Initializing opengl options...done Initializing decor options...done Initializing vpswitch options...done Initializing snap options...done Initializing mousepoll options...done Initializing resize options...done Initializing place options...done Initializing move options...done Initializing wall options...done Initializing grid options...done I/O warning : failed to load external entity "/home/brwright/.compiz/session/10afaca1703486b216133648409481824100000130110002" Initializing session options...done Initializing gnomecompat options...done Initializing animation options...done Initializing fade options...done Initializing unitymtgrabhandles options...done Initializing workarounds options...done Initializing scale options...done compiz (expo) - Warn: failed to bind image to texture Initializing expo options...done Initializing ezoom options...done compiz (core) - Error: Couldn't load plugin '/usr/lib/compiz/libunityshell.so' : /usr/lib/compiz/libunityshell.so: undefined symbol: _ZNK5unity4dash10Controller6windowEv compiz (core) - Error: Couldn't load plugin 'unityshell' compiz (core) - Warn: unhandled ConfigureNotify on 0x7000090! compiz (core) - Warn: this should never happen. you should probably file a bug about this. compiz (core) - Warn: unhandled ConfigureNotify on 0x7000093! compiz (core) - Warn: this should never happen. you should probably file a bug about this. compiz (core) - Warn: unhandled ConfigureNotify on 0x7000096! compiz (core) - Warn: this should never happen. you should probably file a bug about this. compiz (core) - Warn: unhandled ConfigureNotify on 0x7000099! compiz (core) - Warn: this should never happen. you should probably file a bug about this. compiz (core) - Warn: unhandled ConfigureNotify on 0x700009c! compiz (core) - Warn: this should never happen. you should probably file a bug about this. compiz (core) - Warn: unhandled ConfigureNotify on 0x700009f! compiz (core) - Warn: this should never happen. you should probably file a bug about this. Initializing annotate options...done Initializing blur options...done Initializing clone options...done Initializing colorfilter options...done Initializing commands options...done Initializing cube options...done Initializing imgjpeg options...done Initializing kdecompat options...done Initializing mag options...done Initializing neg options...done Initializing obs options...done Initializing opacify options...done Initializing put options...done Initializing resizeinfo options...done Initializing ring options...done Initializing rotate options...done Initializing scaleaddon options...done Initializing screenshot options...done Initializing shift options...done Initializing staticswitcher options...done Initializing switcher options...done Initializing thumbnail options...done Initializing unityshell options...done Initializing water options...done Initializing winrules options...done Initializing wobbly options...done Setting Update "main_menu_key" Setting Update "run_key" Starting gtk-window-decorator As you can see the terminal never comes back to the CI prompt. I must do a control C to get to the CI prompt, but then the OS is frozen. I have to reboot and run Unity 2D in able to do anything on my laptop. I hope I have explained this enough and provided some useful info. I am at a loss to understand what the problem is, or what exactly what is causing the problem. Is it Unity or Compiz? Can anyone help?

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• Cannot reinstall Unity - Broken dependencies

  - by Pedro Sardinha U94410

  I've lost my Unity after sudo apt-get autoremove --purge unity-webapp and cleaned the system with Ubuntu Tweak. I try to install it, but I always get a warning of broken dependencies... I've added the Unity Team PPA, dist-upgrade, among other efforts. (same with Unity 2D) When I try to install ubuntu-desktop I get this: E: Unable to correct problems, you have held packages (hold) spoiled. Please help me! [Ubuntu 12.10]

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• Unity 3D won't load - Choosing "Ubuntu" during login still loads Unity 2D

  - by Shasteriskt

  I just installed Ubuntu 11.10 on my ASUS N43SL laptop and Unity 3D loaded right after installation. But upon reboot, I noticed that Ubuntu loaded Unity 2D instead of Unity 3D. I logged-off and made sure I had "Ubuntu" selected during login, but after many attempts Unity 3D just won't load. Just to make it definite, I did echo $DESKTOP_SESSION on the terminal and it says ubuntu-2d, which is not expected. My laptop runs on i5 with 1Gb NVIDIA GT540M so I don't think its a case of lacking graphics capability. And yes, I have installed the proprietary driver using "Additional Drivers" in "System Settings". What can be the cause of this problem? How can it be fixed?

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• 12.04 Unity 3D Not working where as Unity 2D works fine

  - by Stephen Martin

  I updated from 11.10 to 12.04 using the distribution upgrade, after that I couldn't log into using the Unity 3D desktop after logging in I would either never get unity's launcher or I would get the launcher and once I tried to do anything the windows lost their decoration and nothing would respond. If I use Unity 2D it works fine and in fact I'm using it to type this. I managed to get some info out of dmesg that looks like it's the route of whats happening. dmesg: [ 109.160165] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung [ 109.160180] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state [ 109.167587] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 1226 at 1218, next 1227) [ 109.672273] [drm:i915_reset] *ERROR* Failed to reset chip. output of lspci | grep vga 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) output of /usr/lib/nux/unity_support_test -p IN 12.04 OpenGL vendor string: VMware, Inc. OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x300) OpenGL version string: 2.1 Mesa 8.0.2 Not software rendered: no Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no The same command in 11.10: stephenm@mcr-ubu1:~$ /usr/lib/nux/unity_support_test -p OpenGL vendor string: Tungsten Graphics, Inc OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset OpenGL version string: 2.1 Mesa 7.11 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes stephenm@mcr-ubu1:~$ output of /var/log/Xorg.0.log [ 11.971] (II) intel(0): EDID vendor "LPL", prod id 307 [ 11.971] (II) intel(0): Printing DDC gathered Modelines: [ 11.971] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 12.770] (II) intel(0): Allocated new frame buffer 2176x800 stride 8704, tiled [ 15.087] (II) intel(0): EDID vendor "LPL", prod id 307 [ 15.087] (II) intel(0): Printing DDC gathered Modelines: [ 15.087] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 33.310] (II) XKB: reuse xkmfile /var/lib/xkb/server-93A39E9580D1D5B855D779F4595485C2CC66E0CF.xkm [ 34.900] (WW) intel(0): flip queue failed: Invalid argument [ 34.900] (WW) intel(0): Page flip failed: Invalid argument [ 34.900] (WW) intel(0): flip queue failed: Invalid argument [ 34.900] (WW) intel(0): Page flip failed: Invalid argument [ 34.913] (WW) intel(0): flip queue failed: Invalid argument [ 34.913] (WW) intel(0): Page flip failed: Invalid argument [ 34.913] (WW) intel(0): flip queue failed: Invalid argument [ 34.913] (WW) intel(0): Page flip failed: Invalid argument [ 34.926] (WW) intel(0): flip queue failed: Invalid argument [ 34.926] (WW) intel(0): Page flip failed: Invalid argument [ 34.926] (WW) intel(0): flip queue failed: Invalid argument [ 34.926] (WW) intel(0): Page flip failed: Invalid argument [ 35.501] (WW) intel(0): flip queue failed: Invalid argument [ 35.501] (WW) intel(0): Page flip failed: Invalid argument [ 35.501] (WW) intel(0): flip queue failed: Invalid argument [ 35.501] (WW) intel(0): Page flip failed: Invalid argument [ 41.519] [mi] Increasing EQ size to 512 to prevent dropped events. [ 42.079] (EE) intel(0): Detected a hung GPU, disabling acceleration. [ 42.079] (EE) intel(0): When reporting this, please include i915_error_state from debugfs and the full dmesg. [ 42.598] (II) intel(0): EDID vendor "LPL", prod id 307 [ 42.598] (II) intel(0): Printing DDC gathered Modelines: [ 42.598] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 51.052] (II) AIGLX: Suspending AIGLX clients for VT switch I know im using the beta version so I'm not expecting it to work but does any one know what the problem may be or even why they Unity compatibility test is describing my video card as vmware when its an intel i915 and Ubuntu is running on the metal not virtualised. Unity 3D worked fine in 11.10

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• Unity 3D Not working where as Unity 2D works fine [closed]

  - by Stephen Martin

  I updated from 11.10 to 12.04 using the distribution upgrade, after that I couldn't log into using the Unity 3D desktop after logging in I would either never get unity's launcher or I would get the launcher and once I tried to do anything the windows lost their decoration and nothing would respond. If I use Unity 2D it works fine and in fact I'm using it to type this. I managed to get some info out of dmesg that looks like it's the route of whats happening. dmesg: [ 109.160165] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung [ 109.160180] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state [ 109.167587] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 1226 at 1218, next 1227) [ 109.672273] [drm:i915_reset] *ERROR* Failed to reset chip. output of lspci | grep vga 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) output of /usr/lib/nux/unity_support_test -p IN 12.04 OpenGL vendor string: VMware, Inc. OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x300) OpenGL version string: 2.1 Mesa 8.0.2 Not software rendered: no Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no The same command in 11.10: stephenm@mcr-ubu1:~$ /usr/lib/nux/unity_support_test -p OpenGL vendor string: Tungsten Graphics, Inc OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset OpenGL version string: 2.1 Mesa 7.11 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes stephenm@mcr-ubu1:~$ output of /var/log/Xorg.0.log [ 11.971] (II) intel(0): EDID vendor "LPL", prod id 307 [ 11.971] (II) intel(0): Printing DDC gathered Modelines: [ 11.971] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 12.770] (II) intel(0): Allocated new frame buffer 2176x800 stride 8704, tiled [ 15.087] (II) intel(0): EDID vendor "LPL", prod id 307 [ 15.087] (II) intel(0): Printing DDC gathered Modelines: [ 15.087] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 33.310] (II) XKB: reuse xkmfile /var/lib/xkb/server-93A39E9580D1D5B855D779F4595485C2CC66E0CF.xkm [ 34.900] (WW) intel(0): flip queue failed: Invalid argument [ 34.900] (WW) intel(0): Page flip failed: Invalid argument [ 34.900] (WW) intel(0): flip queue failed: Invalid argument [ 34.900] (WW) intel(0): Page flip failed: Invalid argument [ 34.913] (WW) intel(0): flip queue failed: Invalid argument [ 34.913] (WW) intel(0): Page flip failed: Invalid argument [ 34.913] (WW) intel(0): flip queue failed: Invalid argument [ 34.913] (WW) intel(0): Page flip failed: Invalid argument [ 34.926] (WW) intel(0): flip queue failed: Invalid argument [ 34.926] (WW) intel(0): Page flip failed: Invalid argument [ 34.926] (WW) intel(0): flip queue failed: Invalid argument [ 34.926] (WW) intel(0): Page flip failed: Invalid argument [ 35.501] (WW) intel(0): flip queue failed: Invalid argument [ 35.501] (WW) intel(0): Page flip failed: Invalid argument [ 35.501] (WW) intel(0): flip queue failed: Invalid argument [ 35.501] (WW) intel(0): Page flip failed: Invalid argument [ 41.519] [mi] Increasing EQ size to 512 to prevent dropped events. [ 42.079] (EE) intel(0): Detected a hung GPU, disabling acceleration. [ 42.079] (EE) intel(0): When reporting this, please include i915_error_state from debugfs and the full dmesg. [ 42.598] (II) intel(0): EDID vendor "LPL", prod id 307 [ 42.598] (II) intel(0): Printing DDC gathered Modelines: [ 42.598] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 51.052] (II) AIGLX: Suspending AIGLX clients for VT switch I know im using the beta version so I'm not expecting it to work but does any one know what the problem may be or even why they Unity compatibility test is describing my video card as vmware when its an intel i915 and Ubuntu is running on the metal not virtualised. Unity 3D worked fine in 11.10

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• Unity Occlusion Portals: What and How?

  - by Nick Wiggill

  (Here I eat my words on Meta about posting Unity questions on Unity Answers... since that site is less responsive than this one.) Unity provides cell-based Occlusion Culling (via Umbra, I believe). However, a newer feature that it supports is Occlusion Portals. The question is, if BSP-based occlusion culling is already a feature of Unity, what do portals add, and how? PS. This question is not "What are portals?" -- I'm aware of the original Quake BSP-style portals -- which is partly why I find the explicit portal concept in Unity odd, since it uses BSP anyway.

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• WPF 3D - Need help writing conversion methods between 2D and 3D (Point3DToPoint and PointAndZToPoint

  - by DanM

  I'm new to WPF 3D, so I may just be missing something obvious, but how do I convert from 3D to 2D and (for a given z location) from 2D to 3D? Specifically, I need two conversion methods: Point3DToPoint - If I have an (x, y, z) coordinate in the 3D world, how do I determine the (x, y) coordinate on the projected 2D surface. Method signature: public Point Point3DToPoint(Point3D point3D) PointAndZToPoint3D - If I have an (x, y) coordinate on the projected 2D surface and a z location in the 3D world, how do I determine the intersecting (x, y, z) coordinate in the 3D world? Method signature: public Point3D PointAndZToPoint3D(Point point, double z) I'd like the 2D coordinate to be the location measured from the upper-left corner of Viewport3D and the 3D coordinate to be the location relative to the origin (0, 0, 0) of the 3D world. Note 1: I found this related question, but it only addresses conversion from 3D to 2D (not the reverse), and I'm not sure if the answers are up-to-date. Note 2: I'm currently using .NET 3.5, but if there are improvements in .NET 4.0 that would help me, please let me know.

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• unity screensaver ? - plans for unity

  - by gare

  Are there plans to develop a screensaver specifically for Unity? Since Unity uses gnome-screensaver by default currently, seems like a reasonable area for a desktop to attract much user appreciation. (My personal interest is in a nice Pictures folder type slideshow screensaver with more settings than currently offered in gnome-screensaver - ie folder specification, and duration/delay of slide.) Thank you.

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• Running Unity 2d - Does not work on actual system but works fine in VM

  - by Dylan

  So I'm running Ubuntu 10.10 and I cannot get Unity 2d to work with my system. This is particularly frustrating as it works just fine in all the VMs I've tested it on. I actually really like Unity and I want to get to know it (in part) before Ubuntu 11.04. I checked Synaptic and it looks like everything's there. The only thing not installed are dev libs and so on. Should I install those as well? Obviously the difference between my system and a VM is that the VM is running off a basically brand new OS. I only use VMs to test new stuff out and remake them often, so my only guess is that I have something installed on my system that is preventing Unity from running. Any thoughts?

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• Unity 2d support dropped in 12.10, what now?

  - by tomodachi

  So its been announced. Ubuntu is dropping unity 2d support. I wouldn't mind if it wasn't for two things that are important to me. 1) A working system Unity is nice, i try to use it quite often. But it lags. 2) Support for older hardware. I also have old computers. You can imagine how they would work with unity if my current laptop is slog in Ubuntu. I guess i could use another desktop environment/ window manager , like switching to fluxbox. Anyone have any suggestion ideas/solutions on how to proceed with Ubuntu in the future? All insights welcome

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• Autostart app with proper icon in unity launcher

  - by kyleN

  One can autostart an application such that it launches on session start with an xdg desktop file in ~/.config/autostart (or /etc/xdg/autostart). But my application (a python/gtk/webkit/html5 app) when autostarted has a unity (and a unity-2d) launcher icon that is a gray question mark, even though: when I find it in dash, the dash shows the icon I specify in my main desktop file (in /usr/share/applications) when I launch it from dash, the launcher shows the icon I specify in my main desktop file when I add it as a favorite, the launcher shows the proper icon There are two cases where I get the gray question mark icon: autostart launch from terminal (this use case is not essential though and doesn't involve the desktop file anyway: but should/does ubuntu have an xdg desktop file interpreter à la #!/usr/bin/desktop or something) So: what is needed such unity (3d/2d) launcher panel shows the icon specified in an autostart desktop file?

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• Propose Unity Feature: Open Apps in the upper side of the Unity Launcher [closed]

  - by user52159

  Possible Duplicate: What is the best medium for sending feature requests? I don't know if this is the right place to propose a feature. If someone can guide me to the correct forum, he's welcome. I want to propose that the opened applications appear in the upper side of the Unity Launcher. Since I think that those are the icons we'll click most of the time and, of course, those that we are working with at the moment.

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• Choosing 3D modeling software Maya or 3D max?

  - by Kenneth J

  I've am a developer whose has spent most of my programming life developing web and business applications. I want to try my hand at something more challenging (but stay in the comfort of Visual Studio) ...perhaps XNA. Want 3D modeling software would be best for someone developing XNA? I have played with 3d MAX and Maya but never really did anything too involved. What are the pros and cons between them (in terms of game development)? Does one win out over the other for game development? Or is it pretty much just preference? I am new to game development and just trying to figure out the best tools to use before I really started. Any advice or other suggections would be greatly appreciated.

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• What's a good 3D modelling editor, other than Blender, that can be used within Unity 3D?

  - by Arc

  Unity 3D is an amazing tool for quickly creating good-looking, fun games. Unfortunately, its not intended to be used for actually designing your characters or complex levels. Blender is the general low-budget answer for this, but is difficult to understand when compared to proprietary programs, say, 3DS Max. What else is out there?

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• what is the simplest 3d software for unity?

  - by kdavis8

  Ive heard a lot about Daz studio, Poser, Maya, K-3d, Anim8or, Blender, and all the rest. My question is which one is the best choice in terms of simplicity and quality. price is not an issue really. I'm programming games in java for android mobile devices at the moment but i will eventually move onto larger platforms. I would like to utilize unity3d for the game programming itself and utilize a 3d modeling software just to create the game objects. I just need to know the best one to get started with from scratch or should i use a combination of multiple ones? Any insight for this would be great, thanks!

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• Unity 3d support for multiple X-screens

  - by stewbond

  I've installed Ubuntu 12.04 this weekend and have had problems getting Unity3d to work with my triple monitor set-up. I've installed the latest nVidia drivers for my 2 nVidia video cards and have used NVIDIA X Server Settings to configure everything. If I stick each monitor on a separate X screen, all but the primary X screen will appear white and the cursor will be a black X. I can start a terminal on this screen but cannot drag other windows to it. If I kill the "Nautilus" process, the white background disappears and I see my desktop background, but my cursor is still an X and I still cannot drag windows to it. If I enable TwinView, I can get one screen on two monitors to work properly, but the white screen remains on my third monitor. In addition, I don't like using TwinView because my full-screen applications get stretched. My current solution is to "Enable Xinerama", use all separate X screens and revert to Unity2d. I'd love a solution to this as Ubuntu 12.10 is not planned to support Unity-2d and prefer the aesthetics of 3d anyways. I can provide Xorg.conf for all configurations and any other suggested diagnostic information. Below is my closest-to-working xorg.conf: # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 295.33 (buildd@zirconium) Fri Mar 30 13:38:49 UTC 2012 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" RightOf "Screen2" Screen 1 "Screen1" RightOf "Screen0" Screen 2 "Screen2" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "1" EndSection Section "Files" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Microvitec PLC MV191" HorizSync 30.0 - 81.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Monitor" Identifier "Monitor1" VendorName "Unknown" ModelName "CRT-1" HorizSync 28.0 - 55.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Monitor" Identifier "Monitor2" VendorName "Unknown" ModelName "Microvitec PLC MV191" HorizSync 30.0 - 81.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Monitor" Identifier "Monitor3" VendorName "Unknown" ModelName "Microvitec PLC MV191" HorizSync 30.0 - 81.0 VertRefresh 56.0 - 75.0 EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GTS 450" BusID "PCI:1:0:0" Screen 0 EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce 9500 GT" BusID "PCI:2:0:0" EndSection Section "Device" Identifier "Device2" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GTS 450" BusID "PCI:1:0:0" Screen 1 EndSection Section "Device" Identifier "Device3" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GTS 450" BusID "PCI:1:0:0" Screen 2 EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "DFP-0: 1280x1024_75 +0+0; DFP-0: 1280x1024 +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen1" Device "Device1" Monitor "Monitor1" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen2" Device "Device2" Monitor "Monitor2" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "DFP-2: 1280x1024_75 +0+0; DFP-2: nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen3" Device "Device3" Monitor "Monitor3" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "DFP-2: nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Extensions" Option "Composite" "Disable" EndSection Other people have had similar issues. I haven't been successful at any of the few suggestions submitted. Can not get Dual Monitors to work on Different GPUs http://askubuntu.com/questions/30412/3-monitors-with-2-video-cards-not-working?rq=1 How to get second display to work alongside primary display? http://askubuntu.com/questions/148007/multiple-monitors-only-work-with-unity-2d/201086#201086 xorg.conf and Unity3D?

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• 12.04 LTS: unity --reset hangs

  - by Gregory R. Pace

  Nearly each time I reboot my machine, the system panel and integrated app menus fail to load. At a terminal, when issuing 'unity --reset', I get the following errors: ... Initializing widget options...done Initializing winrules options...done Initializing wobbly options...done ERROR 2012-11-05 04:36:48 unity.glib-gobject <unknown>:0 g_object_unref: assertion `G_IS_OBJECT (object)' failed ERROR 2012-11-05 04:36:48 unity.gtk <unknown>:0 gtk_window_resize: assertion `width > 0' failed WARN 2012-11-05 04:37:14 unity <unknown>:0 Unable to fetch children: No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application885622223 ERROR 2012-11-05 04:37:21 unity.glib-gobject <unknown>:0 g_object_set_qdata: assertion `G_IS_OBJECT (object)' failed Setting Update "main_menu_key" Setting Update "run_key" WARN 2012-11-05 04:38:06 unity.iconloader IconLoader.cpp:438 Unable to load icon stock-person at size 24 WARN 2012-11-05 04:38:26 unity.glib.dbusproxy GLibDBusProxy.cpp:182 Unable to connect to proxy: Error calling StartServiceByName for com.canonical.Unity.Lens.Applications: Timeout was reached WARN 2012-11-05 04:38:26 unity.glib.dbusproxy GLibDBusProxy.cpp:182 Unable to connect to proxy: Error calling StartServiceByName for com.canonical.Unity.Lens.Applications: Timeout was reached The procedure hangs at this point. Any ideas how to solve these problems ? Thanks in advance.

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• Playing 3D mkv on 3D TV

  - by user137713

  I just bought a brand new LG 42LW4500 TV with enabled 3D think its passive any how i have an option to convert 2D 3D i also got a full set of normal 3D Glases. Now today i downloaded a 3D movie (14GB) Full HD in a mkv format i hooked up my PC to my TV and opened the mkv in VLC player and what i got was 2 pictures in one screen sowing same thing. Now i am lost from here i enabled 3D but it didnt really feel like 3D. Can anyone shed some ligth on how can you play 3D movies do i need to use 2D 3D conversion on tv or?

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• Boot ubuntu 12.04 in 3D - nomodeset quiet splash install

  - by rahi

  I would like to enable 3D in Ubuntu 12.04. I recently tried to install ubuntu on a new computer. When the installation was complete and I rebooted the machine, I could only see a blank screen. After some searching, I followed this tutorial which instructed me to boot with "nomodeset" enabled. I choose this on the USB I was installing ubuntu 12.04 from. Fortunately, the ubuntu installation on the new computer was successful. When I tried to change the size of the unity launcher icons, I did not see that option (as I see on my other computer running ubuntu 12.04). I tried installing MyUnity and it told me that the computer I had just installed 12.04 to was running in 2D. To my knowledge. all the software is up to date (as I ran the Software Updater). In addition, when I look for Additional Drivers, I see a message that says "No proprietary drivers are in use on this system". When I look under System Details Graphics, I see the Driver as "VESA:Intel Sandybridge/Ivybridge Graphics. When I hold the shift key on when my machine boots up, and type "e" on the Grub menu, I see the following towards the end, "nomodeset quiet splash $vt_handoff". Does this have anything to do with the plain 2D ubuntu 12.04 experience? Again, what I'd like to do now is get the 3D experience on my new machine running 12.04. Please let me know if you need more information.

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• Ubuntu 11.10 is falling back to Unity 2D. How to get back to Unity 3D?

  - by marcioAlmada

  It happened some minutes ago when I plugged my secondary monitor and my graphical interface simply crashed. So I had to restart my session. Since the crash Ubuntu insists to use Unity2D fall back instead of the default one. I used to plug the secondary monitor everyday when at home and nothing bad happened before. This 2D version of the GUI is ugly and has a lot of problems. How can I go back to Unity 3D GUI? update It seems somehow I lost my opengl support (driver issues). $ glxinfo name of display: :0.0 Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Error: couldn't find RGB GLX visual or fbconfig Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". And: $ glxgears Xlib: extension "GLX" missing on display ":0.0". Error: couldn't get an RGB, Double-buffered visual How can I revert things and go back to the right driver?

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• Ubuntu 12.04 despite the left panel POLI tray present, myunity says that unity turns in 2d

  - by Stef

  How do I enable unity 3d? I state that I have used the correct login to ubuntu to ubuntu and not 2d below the glxinfo stefano@WorkLinux:~$ glxinfo | grep render nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 55 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 56 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 59 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 58 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30 direct rendering: Yes OpenGL renderer string: Gallium 0.4 on NV34

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