DepthStencilBuffer question

XNA Framework

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    - Official List of Features and Limitations of the various Pixel Shader versions? Thanks to both of you for replying. I did look at the HLSL reference and programming guide but they don't have a comprehensive list. There are just scattered bits that mention different limitations of different versions. That Wikipedia chart is exactly what is needed... thanks Kyle. However, I really feel that Microsoft should make a similar chart to make it official. Also, the Wikipedia chart doesn't show anything for version 1.x although I suppose there isn't much of a need to support 1.x in games any more. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 2
    - Problems with rendering... Hey, I'm pretty sure that these are both simple fixes.... But I've been having two problems with rendering things with direct x 9. I've worked around both of them for a while but I don't really like doing that, although I've been unable to come up with a reason/solution for either and my research on google and these forums hasn't yet provided a solution, so I figured I'd actually try asking for help... I'm writing a 2D/3D engine, and I've found that when I'm using 2D rendering, nothing shows up on screen until I render a font to the screen. I'm not doing anything excessive with my fonts - I'm just using the LPD3DXFONT class with the DrawTextA function to render my text. So as far as I know, that shouldn't be changing anything important. Regardless, until I've rendered a font to the screen, none of my 2D sprites will show up on screen. I'm using the following render states: m_pDevice->SetRenderState(D3DRS_LIGHTING, false); m_pDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, true); m_pDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA); m_pDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA); m_pDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE); EDIT: okay, apparently half of my message disappeared. So let's try this again... In case it's relevant, here's what I'm using to set my projection matrix: D3DXMatrixOrthoOffCenterLH (& m_mtxProjection , 0, 1, 1, 0, -100, 100); Other than that, there really isn't any difference between my meshes and my sprites (other than the fact that one's a textured quad and one's a full fledged mesh). The other problem I've been having is that in release mode, nothing shows up on screen even though everything works fine in debug mode. I'm not quite sure why this is happening. So any insights as in to why that happens would be much appreciated :) Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 3
    - Creating projectiles, need help with list. Do you instantiate your list object before you use it List<projecticle> ProjList = new List<projectile>(); You won't be able to add items to the list before you do that. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 4
    - display fractal Hi, everybody I 'm looking for a solution to display fractal with directX., does it exist solutions to draw it , 'cause fractal hasn't got any surfaces and are infinite. Thanks for your answers, and merry christmas. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 5
    - Error in SpriteBatch.Draw() call with SpriteSortMode enum The sprite sort mode is not a Flags enum, so you can't combine different values like this. You get to choose just one of the supported values at a time. Just specify BackToFront or FrontToBack, no need to or the Deferred value in with this. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 6
    - Cannot delegate to VertexBuffer.SetData<T> I wanted to write a method that basically delegates a call to VertexBuffer.SetData. What I do is simply this: class MyDelegate { private VertexBuffer vertexBuffer; // Some init code public void MySetData<T>( T[] data ) { vertexBuffer.SetData<T>( data ); } } This does not compile and tells me: error CS0309: The type 'T' must be convertible to 'System.ValueType' in order to use it as parameter 'T' in the generic type or method 'Microsoft.Xna.Framework.Graphics.VertexBuffer.SetData<T>(T[])' This is fine I thought and added a where constraint to MySetData: public void MySetData<T>( T[] data ) where T : System.ValueType { However, this ends up with another error: error CS0702: Constraint cannot be special class 'System.ValueType' So I cannot specify System.ValueType as a constraint but I actually have to. I wonder how the constraint could be defined on VertexBuffer.SetData in the first place. Or maybe I'm just doing something wrong here Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 7
    - Game Components - help! Fixed - just needed to rename my Draw method in the component to DrawMap and call that in my main Draw method. Makes a lot more sense to me now. Cheers Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 8
    - Official Update Plese, Someone at Microsoft.... the drembuildplay site, even though the competition should be global, does not allow non-US people to register. I don't live in the U.S., so I can't choose any state, the zipcodes in my country are 6 digits long, and the telephone numbers are not in the US format. Edit: didn't see errolian's post before i posted this. P.S. did I mention I passed from neutral state, to exalted state and then down to low-morale state in about 2 minutes .... does this make me emotionally unstable Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 9
    - Gamercards and player information Since XBox Live has a dependency on player profiles, you would think feature would be there in the next relase. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 10
    - XNA Toolset I'll try to dig up my copy of the issue, but I think they just got the name wrong. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 11
    - Can I write 3D games in XNA? Yes, I just released a library to help the development of 3D games in XNA. It is a game library for 3D collision detection and response. Includes a sample game demo using the library to do player collision detection/response for a first person shooter style game. Player can jump, slide on walls and climb up/down stairs and ramps all with a smooth movement. Point based collision detection is also demostrated for weapon projectiles. Check it out here: http://www.gameprojects.com/project id=92461318be Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 12
    - Unable to load p1_wedge following first Starter Kit tutorial : ) - thank you! Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 13
    - Could C# be the future of gaming? This is more of a comment thread then a question so much, As really there is no definitive answer. I think if you take a look at our partner, Garage Games, I think they are demonstrating that it can be used for serious gaming :-) It's up to the individual to decide though... Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 14
    - Drawing artifacts when deploying on the Xbox360 Commercial games tend not to have objects moving over perfectly flat color backgrounds, though. This sort of signal artifact goes away completely when you have a more complex and varying image. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 15
    - SpriteBatch Source Rectangle CORRECTION: 0.5f DOES work w/o flickering, though 0.6f won't. neither will 0.25f..... Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 16
    - XNA getting started I think this is just a terminology thing, Greg over @ learnXNA hasn't updated his videos from beta 1 yet. Bascially for a game to run in Windows, select "Windows Game" project type for an XBOX 360 game select the "Xbox 360 Game" project type. To start with I'd recommend using the "Windows Game" project type and if you want to migrate to the 360 later you can start a new XBOX 360 project, link the code from the windows game and just recompile it for the xbox. 2 projects for 2 platforms, one code base, damn I love XNAfor that. Hope that helps Darkside Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
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  - 1
    - Mesh animation with directX (c#) thank you for your answer Wickermoon, but i posted this message a long time ago ^^. I fixed it and I'm not using the Utility-Pack. You are right, it sucks. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
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    - Can someone point me to a thread that will tell me how to add collision detection to my game? This link might help you to understand bounding sphere: http://www.mvps.org/directx/articles/using_bounding_spheres.htm btw, since a wall is flat, you probably want to test the sphere (around your ship/obj), intersecting a plane (the wall). Walking through wall probably means the bounding sphere isn't defined/calculated correctly. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 3
    - Clarification regarding EULA and Legacy ps_1_x Compiling According to the docs found in the December SDK for the page "D3DXSHADER Flags" in order to enable compiling via D3DX of HLSL ps_1_x profiles, we must include d3dx_31.dll in our distribution. To the best of my knowledge, the EULA forbid redistributing D3DX DLL files. This is based on the discussion on the DXDev mailing list a while back. What is the solution for this -Pat Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
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    - I'd like to have a game developed...but I need a partner. Most programmers I know don't have a background in art and/or sound, that's why artists and sound engineers have jobs. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 5
    - Stopping A Model Stretching With The Screen Width/Height Doh! can't believe i forgot that. That will do the trick, definitely. Which correlates exactly to his statement that changing it to 1 didn't change anything. Cause 800/500 = 1, 500/500 also = 1. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 6
    - Game Design Question: Multithreading Multithreaded Game Engine Architectures Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 7
    - Reading the screen Can anybody help me with this project. I'm not sure how to get started. I have a simple game window open that displays a number of flags on a map. I have no control over this application, it just shows me a map with randomly placed flags. I want to build a c# application that will "look" at the screen, find the nearest flag, move the mouse curser to the nearest flag and perform a left-mouse button click. This action should be repeated until all flags are gone. I am wondering how to go about this. How do I "look" at the screen and find the location of something. Any help would be appreciated. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 8
    - INSTALLATION PROBLEMS Hello all. Just downloaded visual C# 2005 and then XNA express. Clicked it, then "Install Visual C# to continue installation". Huh I reinstalled vis C# (its registered btw), redownloaded XNA. Still same old message. Help plz. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 9
    - Pong I downloaded the file but it comes up with an error - 'Unexpected end of archive' What should I do Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 10
    - Rendering to multiple full screens Compare MDX and XNA, you'll find that many features in MDX just do not exist in XNA. There're many useful features in D3DX but missing in XNA, like unicode rendering, progressive mesh, tangent computation, vertex buffer optimization, etc. These are usually not necessary in hobby games but they're useful in desktop apps. But of course you can code them by yourself, just like what to do in OpenGL. So it depends on your requirements and your judgment. Maybe I'm wrong, but I just feel that since XNA is not designed for desktop apps currently, I'm not going to be the first one to try it for advanced usage. :) However, I do hope that some brave man tries it and proves it is OK. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 11
    - New Farseer Physics Engine Release Note: I just updated the release to support the 1.0 version of GSE. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 12
    - Delete a picture file after Bitmap.FromFile call. Update: Now I tried the 2 suggested solutions. Disposing the bitmap frees also the lock of the picture file and I can delete the file. But Clone() also clones the file lock :-((( Here is the test code: Image bm = Bitmap .FromFile(fn); Image bm2 = ( Image )bm.Clone(); bm.Dispose(); File .Delete(fn); The original Bitmap is disposed only the close ist alive, but still get the Exception ... Any other solutions BerW Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 13
    - Camera Behind Mesh I need to know how to make sure my camera is always directly behind my mesh. I have it setup so if i press left or right the model will rotate left or right. Now, the sceen shows a rotated mesh. But i want the screen to show as if the mesh hasnt rotated at all. Meaning i want the camera to rotate with the mesh. Im using MDX and C#. Thanks in advanced Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 14
    - membership? important!! The membership allows you to deploy and debug games. Once they're on your 360, you can play them forever AFAIK. Actually, you cannot do anything with XNA Game Launcher on the 360 when your profile does not have an XNA Creators Club membership. Right after you launch and it starts up, it immediately kicks you out with "One of the currently signed-in profiles does not have an XNA Creators Club membership. To continue, exit XNA Game Launcher, purchase a membership from Xbox Live Marketplace and restart XNA Game Launcher." Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 15
    - can xna compile a program for 360 (Moved to Game Studio Express forum) No, the XNA framework on the 360 is designed to help you write games. It is not intended for (nor can be used to) write other types of applications. Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.
  - 16
    - Any plans for Vista? Here is how I got ti installed, but yes it is unsupported and the timeline will rely on other teams as the issue is not with XNA and Game Studio Express it is with the Visual Studio Products. Installing Game Studio Express on Vista . Tag: XNA Framework DepthStencilBuffer question Game Technologies: DirectX, XNA, XACT, etc.

Elurahu

Hi guys.

This is kinda a newbie question that I hope someone can nail for me.

What exactly is the purpose of the DepthStencilBuffer. I'm using it to render a shadowmap into a rendertarget, but I need to know exactly why it's needed. The code doesn't seam to use it.

Another thing I would love to know is why I'm not able to save the content of a rendertarget2D with Single format to a file.

Regards

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Re: XNA Framework DepthStencilBuffer question

Derek Nedelman

The depth part of the buffer contain the depth value of each pixel and is used to produce a reasonably correct depth ordering of the scene so that nearer pixels (and their corresponding objects) obscure further ones. The stencil part of the buffer is typically used to prevent parts of the buffer from being drawn into.

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