Answer Questions

• Jim Ward Can you edit a Model's vertices at runtime?

  Is it possible to edit the vertices contained in ModelMesh Like could I get the vertices, alter their position and set the data back in the collection I ask this because for the terrain object in my game, I want it to be deformable. I've been playing with the content pipeline and my custom importer / processor / writer writes the height data as a byte array. When the object is read back, an index buffer and vertex buffer are generated in the terrain class. The vertex buffer is specified with ResourceUsage.Dynamic which to my knowledge is the only way to make the buffer read / write enabled. I'm considering altering my custom content pipeline objects to create ModelContent objects instead of my current approach, but I will abandon that id ...Show All

• jdavidroberts Recommendations for post processing?

  I'm looking to add some postprocessing effects to my project and have a question regarding the recommended practices for combining several effects. I currently have a simple render to texture, apply pixel shader setup that works great, but now that I want to add some more complex effects I'd like to try to keep things separate. For example, I currently have grayscale, sepia, and blur, and would like to add a bloom effect, but I'd like to have a nice way to toggle each of these independently. I also may want to change the order these effects are applied in (such as the blur and bloom before the grayscale, or maybe the blur after the grayscale, etc). One of the reasons for this is that the effects will be animated and composited based on ...Show All

• Robert3234 Security certificate bug or other file exception

  I started writing a simple program to handle avatar movement and a scrolling tile map (planning on having it grow into an RPG style, or at least a stepping stone before leaping into 3D design). I reached a point in the code where I thought it would be nice to show it to a few people I was talking to about it. So I packaged up the project, and a copy of the release compiled exe. The project kept showing a certificate missing error when compiling, but that went away on the other machines by turning off the signing function. The odd thing is that the application shows a file not found exception if you just use the release exe package (I've double checked, there aren't any of my content/image/xml files missing). I get the same error if I try ...Show All

• bulfers Combine Vertex Buffers?

  Is it common to sort and combine vertex information for a number of small objects prior to sending to a vertex buffer I am considering re-structuring my engine to sort all my vertex and index data into sizeable chunks before sending to buffers on the card. These would be organized by effect and render states to minimize calls and state changes. Is this standard procedure I can imagine eventually being able to concurently render from a buffer while I traverse my scene graph further untill I fill another buffer of a target size and then draw from it. Are these reasonable Ideas Well it would be fast, of course. If you reduce your whole scene to some buffers, that share effects, etc, you will minimize state ...Show All

• george_v Game Distribution

  I am trying to get a very simple 2D XNA game to run on other peoples machines; but when I send them the relevant files, they all complain of getting some form of error report. They all claim to have the requirements (XNA Framework, latest DirectX and .NET Framework 2.0) installed, but it seems something, somewhere isn't doing its job. One of the people in question only has a Radeon 7000, so it is understandable why it isn't working. But the other two have a GeForce 6800 and a 7300GS which should be more than enough! I have tried both ClickOnce installers and binaries from both Debug and Release directories. They all worked fine in folders on my machine, but on other computers the installers installed fine, but just throw up a windows error ...Show All

• A Pham .NET backwards compatibility

  Hey everyone, I'm new to C# and the .NET framework. I recently decided to check it out because I heard about XNA and wanted to play with it. I was looking around for some things that were written in C#, games specifically and I came across Arena Wars. When I try to run it it tells me I need a 1.x version of the .NET framework, I have 2.0 installed. Does that mean that it's not backwards compatible and that end users will eventually need two or three different versions of the framework installed in order to reliably run programs written in C# Yeah the only version of the .NET framework I have installed is the 2.0. So am I correct then that newer versions of the framework are not backwards compatible with ...Show All

• simon burgess Bryce 5 (3d modelling) for free! (no strings!)

  This isn't the latest version of Bryce, but if you're like me, and are just interested in creating free meshes to play around with in XNA, it's not bad. It's certainly a lot more use friendly than the Blender app I downloaded last week. http://www.daz3d.com/program/bryce/bryce5free.php You have to download it before 6th September, but it doesn't need installing, just unzip and run - so worth downloading and pasting the serial number in before then just in case! :-) After putting the serial number in, it'll also offers a free download of some extra stuff (I couldn't actually find what it added to Bryce, but I'm sure it was something!). Exports to .x files, which will be supported by the Content Pipeline, or can be converted to t ...Show All

• Darren_Yu Using multiple matrixes

  hi, i wrote c# code before and i'm i began to learn directx programming. i read the dxsdk for managed code, i have come to the tutuorial 5 : using meshes and  i want to try moving meshes that i created in 3dsmax. as i searched the forum for using multiple meshes, the knowledge that i gain, as follows; 1. i must declare a new matrix for using translation on a mesh, (for every mesh i must declare a matrix), 2. after i declared a matrix and put a mesh into it, if i want to move it, i move the matrix, using transformation functions. 1st question " did i understand truly  " 2nd question " can someone send sample code (or  link of course)  about declaring multiple meshes and matrixes," ...Show All

• Quirk 2D Sprite Rotation Issue

  For some reason my sprite will jitter while moving if I rotate to 270 degrees (it flips at exactly 270 degrees). Any suggestions float xSpeed = (float)(Math.Sin(Angle) * mSpeed); float ySpeed = (float)(Math.Sqrt((mSpeed * mSpeed) - (xSpeed * xSpeed))); if (adjustedAngle < 0) { ySpeed = ySpeed * -1.0f; } if (adjustedAngle < -180) { ySpeed = ySpeed * -1.0f; } if (adjustedAngle < 90 || adjustedAngle > -90) { xSpeed = xSpeed * -1.0f; } if (adjustedAngle < -270 || adjustedAngle > 270) { xSpeed = xSpeed * -1.0f; } ...Show All

• Aego Shadows in 2D

  I'm writing a 2D game and it looks nice, but its missing something. I've never handled shadows with 2D games before, but I believe this would add a nice touch. Can anyone give me any pointers (no, not the programming type) Is there an easy way with XNA to make the shadow appear on my standard background when just doing 2D It's not much but I have put together a small article on how I do it and included a code sample for the task. Glenn Wilson wrote: It's not much but I have put together a small article on how I do it and included a code sample for the task. Thanks a ton, I appreciate the article. Shadows in 2d can be easy to do, ...Show All

• CaptainSmudge Game Levels like Quake?

  I found out from another website that there's an add-on (I think) for XNA Game Studio called XNA Magic that is supposed to load game levels made for games like Quake. Should I wait for XNA Magic or similar add-on before trying to create game levels Can I create game levels using XNA Game Studio only and a 3D modeler only Is it possible to create game levels that have two or more texture files I tried out DeleD Lite and found it too hard for me to use. I wish that I can use GMAX to create 3D models for any games. I am VERY MAD at Discreet for discontinuing GMAX. I don't have $2000 for 3D Studio MAX. I would recommend DeleD Pro ($69) or 3ds Max ($1999). Both make it easy t ...Show All

• pukla What program would be good to start making games using direct X?

  What program would be good to start making games using direct X Ive looked but not sure what to use. Do you have any programming experience If not -- and I'm sure folks will have other opinions -- I think you'll find VB.NET to be the easiest place to start. There's really no "right" answer to a question like this; the best language for you is whichever one you can use comfortably and efficiently to do what you need to do. ...Show All

• Blue_Cali Application development

  Hi, Can XNA be used for commercial application development (not games) on the PC I have heard that MDX is becoming deprecated, so is XNA our new alternative Are there any licencing or compatibility issues to be aware of thanks Andrew Griffiths Developer I haven't played with xna since in the beta... so if i'm way off base i apologize but: If MDX is to become deprecated, how are managed applications to properly use regular input devices like joysticks and gamepads (besides xbox controllers). It was my understanding that XNA only supports XBOX pads. Will managed directInput become "deprecated", if so when will XNA support regular controllers Though MDX may become deprecated at so ...Show All

• RMooreFL How to fix ForceFeedback bug in C# DirectInput Samples

  Hi there, This thread started here: http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=985980&SiteID=1 but It was marked as "answered" without a clear solution. Although many people probably found a fix elsewhere, I opened a new thread because this can be useful for somebody. Some devices, like the Logitech G25, fail to initialize Force Feedback when using the DirectInput Samples for Managed Code. Others, like the Logitech Driving Force Pro, don’t present this behavior. I talked with Logitech’s engineers and we found that it’s due to a couple of bugs in the Microsoft DirectInput Samples. The whole thing is explained in my blog: http://graphicdna.blogspot.com/2007/01/managed-directinput-samples-bugs.html H ...Show All

• Todd Schroeder DirectX 9.0c Installation

  When I try install Directx 9.0c December 2005 Redlist I Envisage with this Error : "An internal system error occurred. Please refer to DXError.log and DirectX.log in your Windows folder to derermine problem." I several time download Directx 9.0c December 2005 and November 2005 but everytime I Envisage with this error and when I go to DXError.log and DirectX.log see this Problem with dsound.inf : -------------------- [01/05/06 01:40:11] module: dsetup32(Sep 28 2005), file: setup.cpp, line: 6443, function: CSetup::InstallDirectXInfsFromInfSection     Installation of 'C:\WINDOWS\System32\DirectX\DX113.tmp\dsound.inf - [DefaultInstall]' failed. --------------------- 01/05/06 01:40:11: dsetup32: Installa ...Show All