初始化 D3D9 导致第 3 方库停止工作

发布于 2024-10-17 02:19:27 字数 2285 浏览 3 评论 0原文

首先，一般情况...通过 DLL 加载的第 3 方库会渲染为 HWND。它是简单的 2D 渲染，并没有以我所看到的方式直接使用 D3D - DLL 上的依赖关系显示了许多 D3DKMT 函数，如 D3DKMTCreateDevice，但不是常规 D3D 调用，如 IDirect3D9::CreateDevice。当我调用 IDirect3D9::CreateDevice 时，第 3 方渲染变得混乱。它不会抱怨，只是将所有内容渲染为黑色矩形。我自己的渲染效果很好。

具体...第3方DLL是Mozilla XULRunner 1.9.x，它是FireFox的核心（不是具有硬件加速功能的2.0），包装在wxWidgets wxWebConnect库中。 wxWC 加载 XUL DLL 并提供 Web 浏览器 GUI 组件。

我有一个使用 wx & 的工作应用程序wxWebConnect 这里是编译好的 EXE 和代码： http://www.kirix.com/forums/viewtopic .php?f=25&t=911#p2605

这是我的真实代码，它与 wxWidgets 略有绑定，但不足以使其难以阅读 - 我从随机窗口获取 HWND 只是为了初始化D3D 但从不渲染它：

void MyFrame::OnD3DButton( wxCommandEvent &event )
{
    static bool initialized = false;
    static LPDIRECT3D9 mpD3D = NULL;
    static LPDIRECT3DDEVICE9 mpD3DDevice=NULL;
    if(!initialized)
    {
        wxButton *button=wxDynamicCast(event.GetEventObject(), wxButton);
        HWND mHWnd = (HWND)button->GetHandle();
        mpD3D = Direct3DCreate9(D3D_SDK_VERSION);

        D3DPRESENT_PARAMETERS md3dpp;
        ZeroMemory( &md3dpp, sizeof(D3DPRESENT_PARAMETERS) );
        md3dpp.Windowed                 = true;
        md3dpp.SwapEffect               = D3DSWAPEFFECT_DISCARD;
        // triple buffer if VSync is on
        md3dpp.BackBufferCount          = 1;
        md3dpp.EnableAutoDepthStencil   = 0;
        md3dpp.hDeviceWindow            = mHWnd;
        md3dpp.BackBufferWidth          = 0;
        md3dpp.BackBufferHeight         = 0;
        md3dpp.FullScreen_RefreshRateInHz = 0;
        md3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
        md3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
        md3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
        md3dpp.MultiSampleQuality = 0;

        HRESULT hr = mpD3D->CreateDevice(D3DADAPTER_DEFAULT,D3DDEVTYPE_HAL,mHWnd,
            D3DCREATE_MULTITHREADED|D3DCREATE_MIXED_VERTEXPROCESSING,&md3dpp,&mpD3DDevice);
        if(FAILED(hr))
            wxMessageBox(wxString("mpD3D->CreateDevice() FAILED"));
        else
        {
            wxMessageBox(wxString("mpD3D->CreateDevice() SUCCEEDED"));
            initialized = true;
        }
    }

}

原文

First, the general situation... a 3rd-party library loaded through a DLL does rendering into a HWND. It's simple 2D rendering and is not directly using D3D in a way I can see - a dependency walk on the DLL shows lots of D3DKMT functions like D3DKMTCreateDevice but not regular D3D calls like IDirect3D9::CreateDevice.
When I call IDirect3D9::CreateDevice, the 3rd-party rendering goes screwy. It doesn't complain, but simply renders everything as black rectangles. My own rendering works fine.

The specifics... the 3rd-party DLL is Mozilla XULRunner 1.9.x, which is the core of FireFox (not 2.0 which features hardware acceleration), wrapped in the wxWidgets wxWebConnect library. wxWC loads the XUL DLL and provides a web-browser GUI component.

I have a working app using wx & wxWebConnect here, a compiled EXE and the code:
http://www.kirix.com/forums/viewtopic.php?f=25&t=911#p2605

Here is my real-life code, it's slightly bound to wxWidgets but not enough to make it hard to read - I get a HWND from a random window simply to initialize D3D but never render to it:

void MyFrame::OnD3DButton( wxCommandEvent &event )
{
    static bool initialized = false;
    static LPDIRECT3D9 mpD3D = NULL;
    static LPDIRECT3DDEVICE9 mpD3DDevice=NULL;
    if(!initialized)
    {
        wxButton *button=wxDynamicCast(event.GetEventObject(), wxButton);
        HWND mHWnd = (HWND)button->GetHandle();
        mpD3D = Direct3DCreate9(D3D_SDK_VERSION);

        D3DPRESENT_PARAMETERS md3dpp;
        ZeroMemory( &md3dpp, sizeof(D3DPRESENT_PARAMETERS) );
        md3dpp.Windowed                 = true;
        md3dpp.SwapEffect               = D3DSWAPEFFECT_DISCARD;
        // triple buffer if VSync is on
        md3dpp.BackBufferCount          = 1;
        md3dpp.EnableAutoDepthStencil   = 0;
        md3dpp.hDeviceWindow            = mHWnd;
        md3dpp.BackBufferWidth          = 0;
        md3dpp.BackBufferHeight         = 0;
        md3dpp.FullScreen_RefreshRateInHz = 0;
        md3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
        md3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
        md3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
        md3dpp.MultiSampleQuality = 0;

        HRESULT hr = mpD3D->CreateDevice(D3DADAPTER_DEFAULT,D3DDEVTYPE_HAL,mHWnd,
            D3DCREATE_MULTITHREADED|D3DCREATE_MIXED_VERTEXPROCESSING,&md3dpp,&mpD3DDevice);
        if(FAILED(hr))
            wxMessageBox(wxString("mpD3D->CreateDevice() FAILED"));
        else
        {
            wxMessageBox(wxString("mpD3D->CreateDevice() SUCCEEDED"));
            initialized = true;
        }
    }

}

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