ASM Community

I'm trying to convert the direct3d tutorials in the visual c directx SDK to asm files. I have working include files etc for directx 8, but I can't get the following code working:

.data?
g_pD3D      dd                       ?
d3ddm       D3DDISPLAYMODE          
d3dpp       D3DPRESENT_PARAMETERS   
g_pd3dDevice dd                      ?

.code
InitD3D proc    hWnd:DWORD
    invoke      Direct3DCreate8, D3D_SDK_VERSION
    mov         g_pD3D, eax
    coinvoke    g_pD3D, Direct3D8, GetAdapterDisplayMode, D3DADAPTER_DEFAULT, ADDR d3ddm
    mov         d3dpp.Windowed, TRUE
    mov         d3dpp.SwapEffect, D3DSWAPEFFECT_DISCARD
    mov         eax, d3ddm.format
    mov         d3dpp.BackBufferFormat, eax
    coinvoke    g_pD3D, Direct3D8, CreateDevice, D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,\
                    hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, offset d3dpp, offset g_pd3dDevice
    .IF         eax!=D3D_OK
        int 3
    .ENDIF                  
ret
InitD3D endp 

All of the above code runs fine, the return values are correct and the directx interface works correctly, but the last coinvoke, with CreateDevice, always returns D3DERR_DRIVERINVALIDCALL. In the documentation only D3DERR_INVALIDCALL is mentioned (invalid parameter), but I can find NOTHING about D3DERR_DRIVERINVALIDCALL. The example in the tutorial works fine in visual C, and I compared the complete call to the interface in C and in asm, they are the same. What's the problem? Thomas

I'm having the same problem - What structures did you have to change? (and what members) Thanks, Ryan Fairfax

Arg... the problem is that in idl uint variables and int variables have the same type : int !!! The only thing i can do is a dirty fix: add an option to treat int as SDWORDs. It should work knowing that for example for the dx8vb.dll there are are only UINTs not INTs... Any suggestions ?