Answer Questions

• Rajesh.Y Linking Pixel shaders via ID3DXFragmentLinker

  Question for the Black belts out there: I am writing a material editor application where i would like to let the user select different pre-written pixel and vertex fragments to work with to create a combined "effect". The interface finds all of the constants and displays the allowing the user to change things like material diffuse, specular power etc. I am familiar with how to use the fragment linker but I think i am missing something conceptually whenusing with with pixel fragments. In the dx samples they make it look like the fragment linker may be used to cascade outputs of fragments, i.e. linking a fragment for diffuse or ambient lighting followed by fragment for animation or not (as per the samples) How can i do this with pi ...Show All

• Rob Relyea Color Banding

  I am getting color banding issues when viewing my project on my Xbox 360. The textures look perfect when the app is ran on windows, using the same XNA source just in a different project. But when I display the textures on an Xbox 360, I get serious color banding. These issues are most pronounced when my Xbox is set to output at 720p or higher resolutions, but the color banding is still there even if the Xbox is set to 480p. The following code is what I am using to setup my 'prefered' values for my graphics device. If you got any idea what could be causing this, I would appreciate the input. graphics.IsFullScreen = true ; graphics.PreferredBackBufferFormat = graphics.GraphicsDevice.DisplayMode.Format; graphics.PreferredBackBufferH ...Show All

• protovision Controlling Game By MIDI

  I'd like to be able to control directx games via MIDI - eg use a guitar footboard that has a pedal and switches etc to generate game controller events. All the vaguely related references I've found on the web are for using directx controllers to generate MIDI events! I want to use MIDI events to generate the equivalent of key presses, mouse buttons or (say) a throttle control. Are there any drivers that do this already If not, how difficult would it be to roll my own, and what would it involve I'm quite competent at C/C++ etc but most of my experience is in an embedded environment, not Direct X. Thanks, Chris Thanks for the pointer. I've written some custom PCI drivers for NT4/Win2k and a custom IPS ...Show All

• StuartLodge Problem with a blur filter on the xbox 360

  Hello, I am trying to run my HDR implementation on the xbox 360 and am having a problem. The luminance textures are R16G16F and the HDR textures are A16R16G16B16F. It's an XNA port of the HDR demo in the DirectX SDK. My problem is that when doing the H and V blur filters I get weird artifacts in the form of white outlines around the glows. These artifacts do not appear with the exact same code running on XP Pro, Vista Ultimate x64, and both SM2 and SM3. I am at a total loss for why this is happening. I also get strange flickering artifacts where the final composed image randomly decides to switch between a previous pass and the final image. Again none of these appear with the exact same code running on windows. Any thoughts would be greatl ...Show All

• moh hassan InvalidCastException help

  this issue involves two classes in my program. a class for a custom cursor, and a class for a GUI button both classes are of type DrawableGameComponent, the Cursor component is added to the base.Components list via the Main class that extends Game and the Buttons component is added from another component class called XmlMenuComponent and that is a normal GameComponent class. my cursor class invokes an event everytime the left mouse button is clicked and when i subscribed the Main class the one that extends Game using foreach ( MouseCursor mComp in base .Components) mComp.LeftMouseClick += new MouseCursor . LeftMouseButtonClicked (Cursor_LeftMouseClick); it works and the function Cursor_LeftMouseClick() is execu ...Show All

• Shelto Where do I buy the whole devkit for XBOX 360

  I am working as a leturer in a University, and my department would like to developing game for XBOX 360 ,it's all for teachings only. So I am asking what do we need to develop a XBOX 360 game, and how much will it cost Is there any beta devkit including the devBox Any clues Thanks  a lot. Well, I'm not sure who exactly you should contact, but you can try emailing the xna team at xna@microsoft.com and they should be able to point you in the right direction. If I would like some kind of humand-machine interactive game using the XBOX live camera,is it possible I have read throught the XNA document, and I havn't found any information about that If you're talking about writing commercial games for the Xbox 36 ...Show All

• Talyrond Shooting

  What code could u use for something to shoot. would this event work: if(GamePad.GetState(PlayerIndex.one).Buttons.A == ButtonState.pressed) shoot = true; if(Shoot = True) { bullet.X = Player.X; bullet.Y = Player.Y; buller.Y += bulletSpeed; shoot = false; } If you look closely, Milliseconds returns an integer value in the total number of Milliseconds elapsed since the last call to Update(). By dividing by 1000.0f I am effectively turning the integer result into a floating point value representing the total Milliseconds elapsed. e.g. If milliseconds returns 16, which means 16 milliseconds elapsed since the last call, then dividing by 1000.0f gives me: 0.016 seconds. To me, this is more accurac ...Show All

• Hendrikbez XNA 360 games.

  Will you be able to burn game's off your computer from the XNA game studio or not Wrong forum to be talking about modding xboxs :D, check your url bar. The Creators club thing is so you can share the games over the net. Im hopeing you will be able to transfure your new peice of virtual joy into the Xbox 360's HDD via an ethernet cable. I can see what microsoft are tring to do and that is creat a community of designers like YouTube for instance, but they are chargeing ($99) us to do it where as YouTube and Myspace and places like that are free. Charging us to share makes sence, but not chargeing us to play on the xbox. Actually, I mis-read a previous post ...Show All

• h1 I may have gotten the wrong idea, but...

  Hi, I'm attempting to become a game designer, and have been for many years now. And, when I saw thx XNA game studio and the advertisements I assumed that microsoft was trying to make a game desgning program that would be easy enough to learn so that anyone could make their own game. But, upon optaining it for myself, I realized that you still needed to know a whole programing langauge, graphic design skills, and every other aspect of making a game. XNA looks to be nothing more than a C# compiler, maybe it has nice functions for a compiler, but I don't see how this is going to make games any easier to make. Besides, there are whole authoring tools out there that are easier to use than this for making game such as: Macromedia Flash and 3D Ga ...Show All

• Sean Hayes How do you canncel your XNA Creators Club subscription?

  Just want to know step by step of where to go so I won't get change other $50 after my 4 months are up. I can't find how to do it on the site. Thanks! Ok, sorry about that. I hadn't heard that -- I will get the right people to check on this. [Edit] Once you've purchased a subscription, you can access the subscription from Xbox Live. Just select "account management" from your user profile, and then select "memberships". The XNA Creators Club membership will be listed, and you can select it and choose "modify membership". [/Edit] --Stephen Well, it says "Note that your subscription will automatically renew to a 4-month subscription at the then c ...Show All

• Dudley How do I know if a resource is managed or not?

  I'm following the recommended pattern on Loading Resources in the XNA Framework . I know that if I do something like the following: vertexBuffer = new VertexBuffer(device, typeof(VertexPositionTexture), vpt.Length, ResourceUsage.WriteOnly, ResourcePool.Managed ); Then that is a managed resource. But what about the following resources Are they managed or not How do I tell for resources where you don't specify a ResourcePool effect = new Effect(device, compiledEffect.GetShaderCode(), CompilerOptions.None, null); texture = Texture.FromFile(device, "mytex.png"); vertexDeclaration = new VertexDeclaration(Device, VertexPositionTexture.VertexElements); Also, just to make sure, I never have to call .Dispose() on a managed resour ...Show All

• sureshramayah Is it possible for XNA go into Visual Basic?

  I alway think Visual Basic is the easiest of all 5 languages(Java, Web Development, C#, C++, and Visual Basic) and I heard that XNA only work on C# and I wanted to have XNA communcate and have some commands for Visual Basic. If it exist please tell me. :-) Please and thank you. Hi Guys (Vb.net) I have been working with XNA for a while now and have a level edito (Levler 3D) I need guys to help use and continue with it, Dowload details here http://www.tridexconsultants.co.uk/pages/DirectxClasses.htm Could You get in touch with me [Alan] Phipps you have been coding as well for a while, and we can merge togeter to create project for vb.net USERS and XNA http://www.alanphipps.com/VisualBasicdotNET-XNA.html ...Show All

• nhaas 10 things to do while waiting for XNA Game Studio Express

  1. Read every single blog and forum post trying to find something new about it 2. Refresh your emails every 20 seconds hoping for a new mail from Microsoft 3. Stare at the wall 4. Make Content for your to be games ( lots and lots of content) 5. Design a game that will soon be forgotten about when the download is ready 6. Run to the fridge and stock up on supplies for when you start your game making 7. Make some more content ( there is no such thing as too much) 8. Read a book ( Book ) 9. Think about how awsome this is going to be 10. refresh your email again If all else fails repeat step 3 until step 2 is sucessful 11.Write a game sdk better than XNA studio express. 12. ...Show All

• Aaron Whitney Bounding Box of a Model after rotating (and scaling) it.

  Hello :) I was wondering how I would go about getting the (axis aligned) bounding box of a model after rotating and scaling it   You can transform the box corners by the model's matrix, although since it's axis aligned it won't be useful for testing. Thanks for the answer CodePfo, yet I fear simply rotating the AABB is not quite what I am looking for. Rotating a model can change a model's AABB considerably. Think of a model shaped like a long tube for instance. When it is positionened along the z-axis it's bounding box is simply an unrounded version of the tube. Position the tube diagonally in the scene and the its bounding box will look completely dif ...Show All

• Parwej Ahamad Files and endianness

  Hello, First I'd like to say thanks to the guys at MS for being so open about the development of the XNA Framework and associated tools. The recent blog posts have been really excellent. At the moment for opening files I use File.OpenRead(). To read the data from the Stream it returns, I use Stream.ReadInt32() and so on. Obviously on my little endian PC platform, reading little endian data, there is no problem. But on the Xbox, does System.IO.Stream exist And if so, does Stream.Read*() do endian conversion on the fly Thanks again, Peter Hi Shawn, thank you very much for your detailed reply. Shawn Hargreaves wrote: By Stream.ReadInt32 I assume you really mean BinaryReader.ReadInt32 Sorry, I forgot that it was in BinaryRea ...Show All