D3D8 CreateDevice call....

[Virtual24]

I am making a call to the CreateDevice function and im having a problem...

if( FAILED( d3d->CreateDevice(D3DADAPTER_DEFAULT,
                                                 D3DDEVICETYPE_REF, hWnd,
                                            D3DSOFTWARE_VERTEXPROCESSING,
                                                 &d3dpp, &d3ddev) ) )
    return E_FAIL;

When i run the program (which compiles fine) it cause an unhandled exception and the debugger says its in the "&d3dpp, &d3ddev) ) )" line....... what is causing this error???

d3ddev is a valid LPDIRECT3DDEVICE8 and d3dpp is D3DPRESENT_PARAMETERS... d3d is a D3D8 object... whats wrong???

[CornedBee]

Most likely the call to Direct3DCreate failed and p3d is a NULL pointer.

[Zaei]

Why are you creating a REF device?

Z.

[Virtual24]

I am setting it to D3DDEVICETYPE_REF instead of D3DDEVICETYPE_HAL b/c my computer sux and its graphics car doesnt support HAL rendering...

I did some trial and error and found that the reason for the error was that the hWnd passed to the function was NULL... for some reason the CreateWindow function isnt working... But i causes no error????

[Zaei]

Post the window creation code, so we can take a look at it =).

Go buy a new card =). Even my 6 year old ATI Rage Pro supports HAL to some extent.

Z.

[Virtual24]

Ok, heres the code to the Create Window function:

HWND hWnd = CreateWindow( wc.lpszClassName, "", WS_OVERLAPPEDWINDOW, 
100, 100, 500, 400, GetDesktopWindow(), NULL, hInstance, NULL );

theres nothing wrong with it that i can tell, it has the same stuff as other examples. The hWnd just keeps returning NULL.

Yeah, i am writing this on my older computer, which has a ATI Rage Pro also, and when i try to run HAL it says no suitable device found. I have my program set to do either HAL or REF depending on a bool variable that will be loaded from a config file. I am just using REF for debugging purposes.

[Zaei]

Get the latest drivers, from the ATI site.

Z.

[Virtual24]

Ok...

Anyway... I fixed my problem. I was using a struct to hold all of my d3d objects and when i went to ZeroMemory the d3dpp it ZeroMemoried the whole struct... so i fixed that.

[Zaei]

Ahhh. That makes sense =).

Z.