failing to initialize D3D9

For Beginners

Started by Da cobra January 08, 2003 01:24 PM

3 comments, last by Da cobra 21 years, 10 months ago

Da cobra

Author

122

January 08, 2003 01:24 PM

What could be wrong with my function :

  
HRESULT InitD3D()
{
	Write2Log("Initializing D3D...") ;
	if (NULL==(g_pD3D=Direct3DCreate9(D3D_SDK_VERSION)))
	{
		Write2Log("Failed to get right SDK version!") ;
		return E_FAIL ;
	}
		Write2Log("D3D object received.") ;
	
	ZeroMemory (&d3dpp, sizeof(d3dpp)) ;
	d3dpp.Windowed = FALSE ;
	d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD ;
	d3dpp.BackBufferFormat = D3DFMT_R5G6B5 ;
	d3dpp.BackBufferWidth = g_nScreenX ;
	d3dpp.BackBufferHeight = g_nScreenY ;

	HRESULT hresult ;
	hresult=g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, 
								 D3DDEVTYPE_HAL, 
								 g_hwnd,
								 D3DCREATE_SOFTWARE_VERTEXPROCESSING,
								 &d3dpp, 
								 &g_pd3dDevice) ;
	
	if (hresult=D3DERR_INVALIDCALL)
	{
		Write2Log("Incorrect parameter in CreateDevice function") ;
		return E_FAIL ;
	}

	if (hresult=D3DERR_NOTAVAILABLE)
	{
		Write2Log("Device not available.") ;
		return E_FAIL ;
	}

	if (hresult=D3DERR_OUTOFVIDEOMEMORY)
	{
		Write2Log("Graphic adapter is out of memory.") ;
		return E_FAIL ;
	}

	return D3D_OK ;
} // end of HRESULT InitD3D()

In my log file I get the following error : Incorrect parameter in CreateDevice function So is there something wrong in my d3dpp paramters or in my parameters in my CreateDevice() function? thanx in advance

WildWest

184

January 08, 2003 01:30 PM

use == instead of = in your if block

if (hresult=D3DERR_INVALIDCALL) //error
if (hresult==D3DERR_INVALIDCALL) //correct

The Wild Wild West - Desperado!

The Wild Wild West - Desperado!

Mathematix

259

January 08, 2003 01:36 PM

No, that isn''t the reason.

In

hresult=g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, g_hwnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pd3dDevice);

One of the parameters passed is either missing, spelled incorrectly or need to be casted.

Drakex

273

January 08, 2003 09:52 PM

Wildwest is right tho. doing

if (hresult=D3DERR_INVALIDCALL)
{

}

will always execute the code inside. it''s because the = actually returns the value. so HRESULT becomes D3DERR_INVALIDCALL, and that is returned to the IF, evaluates to true, and writes to the log..

so change those too while you''re at it