How To Directx9 Device Creation with Multiple Thread Support

[Luigina 18]

Hi everyone,

With this change you can handle multiple threads on device creating on Directx9 update. It fixes application freeze / crash when creating a thread on application create.

 

GrpDetector.cpp

// Before

if (m_kD3DCaps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT)
{
    if (m_kD3DCaps.DevCaps & D3DDEVCAPS_PUREDEVICE)
    {
        dwD3DBehavior = D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE;

        if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
            isFormatConfirmed = TRUE;
    }

    if (FALSE == isFormatConfirmed)
    {
        dwD3DBehavior = D3DCREATE_HARDWARE_VERTEXPROCESSING;

        if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
            isFormatConfirmed = TRUE;
    }

    if (FALSE == isFormatConfirmed)
    {
        dwD3DBehavior = D3DCREATE_MIXED_VERTEXPROCESSING;

        if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
            isFormatConfirmed = TRUE;
    }
}

// Confirm the device/format for SW vertex processing
if (FALSE == isFormatConfirmed)
{
    dwD3DBehavior = D3DCREATE_SOFTWARE_VERTEXPROCESSING;

    if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
        isFormatConfirmed = TRUE;
}

// After

if (m_kD3DCaps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT)
{
    if (m_kD3DCaps.DevCaps & D3DDEVCAPS_PUREDEVICE)
    {
        dwD3DBehavior = D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE | D3DCREATE_MULTITHREADED;

        if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
            isFormatConfirmed = TRUE;
    }

    if (FALSE == isFormatConfirmed)
    {
        dwD3DBehavior = D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED;

        if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
            isFormatConfirmed = TRUE;
    }

    if (FALSE == isFormatConfirmed)
    {
        dwD3DBehavior = D3DCREATE_MIXED_VERTEXPROCESSING | D3DCREATE_MULTITHREADED;

        if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
            isFormatConfirmed = TRUE;
    }
}

// Confirm the device/format for SW vertex processing
if (FALSE == isFormatConfirmed)
{
    dwD3DBehavior = D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED;

    if (pfnConfirmDevice(m_kD3DCaps, dwD3DBehavior, eD3DFmtPixel))
        isFormatConfirmed = TRUE;
}

 

[HFWhite 481]

will this really improve performance?

[Luigina 18]

4 hours ago, Luigina said:

It fixes application freeze / crash when creating a thread on application create.

 

19 minutes ago, HFWhite said:

will this really improve performance?

 

[HFWhite 481]

10 minutes ago, Luigina said:

 

 

I mean yeah, I saw that but.. will it really?

[Luigina 18]

35 minutes ago, HFWhite said:

I mean yeah, I saw that but.. will it really?

You can try, create a thread on app create with dx9. App will crash or freeze sometimes when opening the client.

[Vaynz 1868]

Is a good post, aswell did months ago that too cause on the 3rd app created is lagging and is not getting max fps and is going kinda 20-25 fps feels crazy.

[Distraught 5859]

On 5/15/2024 at 9:43 PM, HFWhite said:

will this really improve performance?

No, it just adds a global mutex, so may decreases it.

On 5/15/2024 at 10:50 PM, Luigina said:

You can try, create a thread on app create with dx9. App will crash or freeze sometimes when opening the client.

You did something really wrong if it fixes your crashes.

Edited May 19 by Distraught

[Luigina 18]

6 hours ago, Distraught said:

You did something really wrong if it fixes your crashes.

I didn't wrong thing, i was creating load thread for some cheat algorithm & load some resources when app creating. After dx9 update this problem occured, i changed thread to async to fix it. It was ok but after some research on microsoft website i did it and revert to thread, issue solved. So it worked on me. To make sure of this, I did the same on the mainline, the same problem was occurring, with this flag I made sure that it was solved there as well.

There is a other ways too ofc. Like create thread after all create processes done

Edited May 19 by Luigina