Atl+Tab Direct 3d anomaly

Graphics and GPU Programming Programming

Started by mdfmKoRn January 02, 2002 01:10 PM

2 comments, last by mdfmKoRn 22 years, 3 months ago

122

Author

January 02, 2002 01:10 PM

I can''t get my game to stop acting weird when I alt+tab out of it. Here''s what I put in the Windows message pump to stop it:

  
case WM_ACTIVATE:
{
    WinActive=LOWORD(wParam)!=WA_INACTIVE;
    if ( WinActive==false )
	DeInit();
    else
        InitD3D( hWnd );
    return 0;
}

DeInit() looks like this:

  
VOID DeInit()
{
    if( pD3DDevice != NULL) 
        pD3DDevice->Release();

    if( pD3D != NULL)
        pD3D->Release();
}

I can alt+tab out, but if I click on a few other windows, my game regains the focus on its own and proceeds to draw without responding to the mouse or keyboard. Anybody know what''s going on? How do I make my game Alt+Tab friendly? ---- Herb M. (mdfmKoRn) www.sky-meyg.com s3202@attbi.com

wazoo69

157

January 02, 2002 02:23 PM

A good method I''ve found is to use TestCooperativeLevel method of the IDirect3DDevice8 interface...so JUST before you call BeginScene in your rendering loop, you test the cooperative level...if you get back a D3DERR_DEVICEERR (or something like that..check the docs) then the user has alt+tabbed out of your program.

You''ll have to call Reset to rest the device, then (depending on how you declared your vertex buffers), you''ll have to reload the vertex and texture information...

ie.

  HRESULT beginRendering(){   HRESULT hr;   hr = lpD3DDevice->TestCooperativeLevel();   if(FAILED(hr))   (       if(hr == D3DERR_DEVICEERR)       {           //reset the direct3d device, and reload the         //textures         lpD3DDevice->Reset();         hr = loadTextures();         if(FAILED(hr))         {             return E_FAIL;         }                 }   }   lpD3DDevice->Clear(..);   return(lpD3DDevice->BeginScene());}

something like that..

Learn about game programming!Games Programming in C++: Start to Finish

mdfmKoRn

122

Author

January 02, 2002 03:20 PM

I ended up implementing something like that in the long run. Now, when I alt+tab out, there are little black boxes left here and there on the screen.

----
Herb M. (mdfmKoRn)
www.sky-meyg.com
s3202@attbi.com

Lifepower

136

January 02, 2002 08:13 PM

You have to check for windows messages when application loses focus. Stop all rendering when this happends. Resume rendering when your application receives focus (you''ll probably have to Reset the device, due to D3DERR_DEVICELOST).

Atl+Tab Direct 3d anomaly

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Atl+Tab Direct 3d anomaly

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines