device.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

     * That shouldn't happen
     */
    TRACE("(%p): Setting up window %p for exclusive mode\n", This, window);
    if (This->style || This->exStyle) {
        ERR("(%p): Want to change the window parameters of HWND %p, but "
            "another style is stored for restoration afterwards\n", This, window);
    }

    /* Get the parameters and save them */
    style = GetWindowLongW(window, GWL_STYLE);
    exStyle = GetWindowLongW(window, GWL_EXSTYLE);
    This->style = style;
    This->exStyle = exStyle;

    /* Filter out window decorations */
    style &= ~WS_CAPTION;
    style &= ~WS_THICKFRAME;
    exStyle &= ~WS_EX_WINDOWEDGE;
    exStyle &= ~WS_EX_CLIENTEDGE;

    /* Make sure the window is managed, otherwise we won't get keyboard input */
    style |= WS_POPUP | WS_SYSMENU;

    TRACE("Old style was %08x,%08x, setting to %08x,%08x\n",
          This->style, This->exStyle, style, exStyle);

    SetWindowLongW(window, GWL_STYLE, style);
    SetWindowLongW(window, GWL_EXSTYLE, exStyle);

    /* Inform the window about the update. */
    SetWindowPos(window, HWND_TOP, 0, 0,
            This->ddraw_width, This->ddraw_height, SWP_FRAMECHANGED);
    ShowWindow(window, SW_NORMAL);
}

/*****************************************************************************
 * IWineD3DDeviceImpl_RestoreWindow
 *
 * Helper function that restores a windows' properties when taking it out
 * of fullscreen mode
 *
 * Params:
 *  iface: Pointer to the IWineD3DDevice interface
 *  window: Window to setup
 *
 *****************************************************************************/
static void WINAPI IWineD3DDeviceImpl_RestoreWindow(IWineD3DDevice *iface, HWND window) {
    IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;

    /* This could be a DDSCL_NORMAL -> DDSCL_NORMAL
     * switch, do nothing
     */
    if (!This->style && !This->exStyle) return;

    TRACE("(%p): Restoring window settings of window %p to %08x, %08x\n",
          This, window, This->style, This->exStyle);

    SetWindowLongW(window, GWL_STYLE, This->style);
    SetWindowLongW(window, GWL_EXSTYLE, This->exStyle);

    /* Delete the old values */
    This->style = 0;
    This->exStyle = 0;

    /* Inform the window about the update */
    SetWindowPos(window, 0 /* InsertAfter, ignored */,
                 0, 0, 0, 0, /* Pos, Size, ignored */
                 SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER);
}

/* example at http://www.fairyengine.com/articles/dxmultiviews.htm */
static HRESULT WINAPI IWineD3DDeviceImpl_CreateAdditionalSwapChain(IWineD3DDevice* iface, WINED3DPRESENT_PARAMETERS*  pPresentationParameters,                                                                   IWineD3DSwapChain** ppSwapChain,
                                                            IUnknown* parent,
                                                            D3DCB_CREATERENDERTARGETFN D3DCB_CreateRenderTarget,
                                                            D3DCB_CREATEDEPTHSTENCILSURFACEFN D3DCB_CreateDepthStencil) {
    IWineD3DDeviceImpl      *This = (IWineD3DDeviceImpl *)iface;

    HDC                     hDc;
    IWineD3DSwapChainImpl  *object; /** NOTE: impl ref allowed since this is a create function **/
    HRESULT                 hr = WINED3D_OK;
    IUnknown               *bufferParent;

    TRACE("(%p) : Created Aditional Swap Chain\n", This);

   /** FIXME: Test under windows to find out what the life cycle of a swap chain is,
   * does a device hold a reference to a swap chain giving them a lifetime of the device
   * or does the swap chain notify the device of its destruction.
    *******************************/

    /* Check the params */
    if(pPresentationParameters->BackBufferCount > WINED3DPRESENT_BACK_BUFFER_MAX) {
        ERR("App requested %d back buffers, this is not supported for now\n", pPresentationParameters->BackBufferCount);
        return WINED3DERR_INVALIDCALL;
    } else if (pPresentationParameters->BackBufferCount > 1) {
        FIXME("The app requests more than one back buffer, this can't be supported properly. Please configure the application to use double buffering(=1 back buffer) if possible\n");
    }

    D3DCREATEOBJECTINSTANCE(object, SwapChain)

    /*********************
    * Lookup the window Handle and the relating X window handle
    ********************/

    /* Setup hwnd we are using, plus which display this equates to */
    object->win_handle = pPresentationParameters->hDeviceWindow;
    if (!object->win_handle) {
        object->win_handle = This->createParms.hFocusWindow;
    }

    object->win_handle = GetAncestor(object->win_handle, GA_ROOT);
    hDc                = GetDC(object->win_handle);
    TRACE("Using hDc %p\n", hDc);

    if (NULL == hDc) {
        WARN("Failed to get a HDc for Window %p\n", object->win_handle);
        return WINED3DERR_NOTAVAILABLE;
    }

    object->orig_width = GetSystemMetrics(SM_CXSCREEN);
    object->orig_height = GetSystemMetrics(SM_CYSCREEN);
    object->orig_fmt = pixelformat_for_depth(GetDeviceCaps(hDc, BITSPIXEL) * GetDeviceCaps(hDc, PLANES));
    ReleaseDC(object->win_handle, hDc);

    /** MSDN: If Windowed is TRUE and either of the BackBufferWidth/Height values is zero,
     *  then the corresponding dimension of the client area of the hDeviceWindow
     *  (or the focus window, if hDeviceWindow is NULL) is taken.
      **********************/

    if (pPresentationParameters->Windowed &&
        ((pPresentationParameters->BackBufferWidth == 0) ||
         (pPresentationParameters->BackBufferHeight == 0))) {

        RECT Rect;
        GetClientRect(object->win_handle, &Rect);

        if (pPresentationParameters->BackBufferWidth == 0) {
           pPresentationParameters->BackBufferWidth = Rect.right;
           TRACE("Updating width to %d\n", pPresentationParameters->BackBufferWidth);
        }
        if (pPresentationParameters->BackBufferHeight == 0) {
           pPresentationParameters->BackBufferHeight = Rect.bottom;
           TRACE("Updating height to %d\n", pPresentationParameters->BackBufferHeight);
        }
    }

    /* Put the correct figures in the presentation parameters */
    TRACE("Copying across presentation parameters\n");
    object->presentParms = *pPresentationParameters;

    TRACE("calling rendertarget CB\n");
    hr = D3DCB_CreateRenderTarget((IUnknown *) This->parent,
                             parent,
                             object->presentParms.BackBufferWidth,
                             object->presentParms.BackBufferHeight,
                             object->presentParms.BackBufferFormat,
                             object->presentParms.MultiSampleType,
                             object->presentParms.MultiSampleQuality,
                             TRUE /* Lockable */,
                             &object->frontBuffer,
                             NULL /* pShared (always null)*/);
    if (object->frontBuffer != NULL) {
        IWineD3DSurface_SetContainer(object->frontBuffer, (IWineD3DBase *)object);
    } else {
        ERR("Failed to create the front buffer\n");
        goto error;
    }

    /**
    * Create an opengl context for the display visual
    *  NOTE: the visual is chosen as the window is created and the glcontext cannot
    *     use different properties after that point in time. FIXME: How to handle when requested format
    *     doesn't match actual visual? Cannot choose one here - code removed as it ONLY works if the one
    *     it chooses is identical to the one already being used!
     **********************************/
    /** FIXME: Handle stencil appropriately via EnableAutoDepthStencil / AutoDepthStencilFormat **/

    object->context = HeapAlloc(GetProcessHeap(), 0, sizeof(object->context));
    if(!object->context)
	return E_OUTOFMEMORY;
    object->num_contexts = 1;

    ENTER_GL();
    object->context[0] = CreateContext(This, (IWineD3DSurfaceImpl *) object->frontBuffer, object->win_handle, FALSE /* pbuffer */, pPresentationParameters);
    LEAVE_GL();

    if (!object->context[0]) {
        ERR("Failed to create a new context\n");
        hr = WINED3DERR_NOTAVAILABLE;
        goto error;
    } else {
        TRACE("Context created (HWND=%p, glContext=%p)\n",
               object->win_handle, object->context[0]->glCtx);
    }

   /*********************
   * Windowed / Fullscreen
   *******************/

   /**
   * TODO: MSDN says that we are only allowed one fullscreen swapchain per device,
   * so we should really check to see if there is a fullscreen swapchain already
   * I think Windows and X have different ideas about fullscreen, does a single head count as full screen?
    **************************************/

   if (!pPresentationParameters->Windowed) {

        DEVMODEW devmode;
        HDC      hdc;
        int      bpp = 0;
        RECT     clip_rc;

        /* Get info on the current display setup */
        hdc = GetDC(0);
        bpp = GetDeviceCaps(hdc, BITSPIXEL);
        ReleaseDC(0, hdc);

        /* Change the display settings */
        memset(&devmode, 0, sizeof(devmode));
        devmode.dmSize       = sizeof(devmode);
        devmode.dmFields     = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
        devmode.dmBitsPerPel = (bpp >= 24) ? 32 : bpp; /* Stupid XVidMode cannot change bpp */
        devmode.dmPelsWidth  = pPresentationParameters->BackBufferWidth;
        devmode.dmPelsHeight = pPresentationParameters->BackBufferHeight;
        ChangeDisplaySettingsExW(This->adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);

        /* For GetDisplayMode */
        This->ddraw_width = devmode.dmPelsWidth;
        This->ddraw_height = devmode.dmPelsHeight;
        This->ddraw_format = pPresentationParameters->BackBufferFormat;

        IWineD3DDevice_SetFullscreen(iface, TRUE);

        /* And finally clip mouse to our screen */
        SetRect(&clip_rc, 0, 0, devmode.dmPelsWidth, devmode.dmPelsHeight);
        ClipCursor(&clip_rc);
    }

   /*********************
   * Create the back, front and stencil buffers
   *******************/
    if(object->presentParms.BackBufferCount > 0) {
        int i;

        object->backBuffer = HeapAlloc(GetProcessHeap(), 0, sizeof(IWineD3DSurface *) * object->presentParms.BackBufferCount);
        if(!object->backBuffer) {
            ERR("Out of memory\n");
            hr = E_OUTOFMEMORY;
            goto error;
        }

        for(i = 0; i < object->presentParms.BackBufferCount; i++) {
            TRACE("calling rendertarget CB\n");
            hr = D3DCB_CreateRenderTarget((IUnknown *) This->parent,
                                    parent,
                                    object->presentParms.BackBufferWidth,
                                    object->presentParms.BackBufferHeight,
                                    object->presentParms.BackBufferFormat,
                                    object->presentParms.MultiSampleType,
                                    object->presentParms.MultiSampleQuality,
                                    TRUE /* Lockable */,
                                    &object->backBuffer[i],
                                    NULL /* pShared (always null)*/);
            if(hr == WINED3D_OK && object->backBuffer[i]) {
                IWineD3DSurface_SetContainer(object->backBuffer[i], (IWineD3DBase *)object);
            } else {
                ERR("Cannot create new back buffer\n");
                goto error;
            }
            ENTER_GL();
            glDrawBuffer(GL_BACK);
            checkGLcall("glDrawBuffer(GL_BACK)");
            LEAVE_GL();
        }
    } else {
        object->backBuffer = NULL;

        /* Single buffering - draw to front buffer */
        ENTER_GL();
        glDrawBuffer(GL_FRONT);
        checkGLcall("glDrawBuffer(GL_FRONT)");
        LEAVE_GL();
    }

    /* Under directX swapchains share the depth stencil, so only create one depth-stencil */
    if (pPresentationParameters->EnableAutoDepthStencil && hr == WINED3D_OK) {
        TRACE("Creating depth stencil buffer\n");
        if (This->depthStencilBuffer == NULL ) {
            hr = D3DCB_CreateDepthStencil((IUnknown *) This->parent,
                                    parent,
                                    object->presentParms.BackBufferWidth,
                                    object->presentParms.BackBufferHeight,
                                    object->presentParms.AutoDepthStencilFormat,
                                    object->presentParms.MultiSampleType,
                                    object->presentParms.MultiSampleQuality,
                                    FALSE /* FIXME: Discard */,
                                    &This->depthStencilBuffer,
                                    NULL /* pShared (always null)*/