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nareshsankapelly
Journeyman III

AMD Display Library : Switching from EXTENDED desktop mode to duplicate mode

Hey there,

I am trying to enable eyefinity. For that first I want to switch from extended to Duplicate Display Group Status. For switching from EXTENDED mode to DUPLICATE mode first I am using ADL_Display_DisplayMapConfig_Get to get the display targets and display maps and then I am setting iDisplayMapValue of display map to ADL_DISPLAY_DISPLAYMAP_MANNER_CLONE but there is no change in the display Mode. Following is the code snippet.

          if (ADL_OK != ADL_Display_DisplayMapConfig_Get( lpAdapterInfo[iCurrentAdapter].iAdapterIndex,

&iNumDisplayMap, &lpDisplayMap,

                                                                     &iNumDisplayTarget, &lpDisplayTarget,

                                                                     ADL_DISPLAY_DISPLAYMAP_OPTION_GPUINFO ) )

         {

PRINTF("ADL_Display_DisplayMapConfig_Get() failed\n");

iReturnValue = FALSE;

break;

         }

lpDisplayMap->iDisplayMapValue = ADL_DISPLAY_DISPLAYMAP_MANNER_CLONE;

         if(ADL_OK !=  ADL_Display_DisplayMapConfig_Set( lpAdapterInfo[iCurrentAdapter].iAdapterIndex,

iNumDisplayMap,

lpDisplayMap,

iNumDisplayTarget,

lpDisplayTarget    ))

        {

PRINTF("ADL_Display_DisplayMapConfig_Set Cloning Desktops failed\n");

        }

I am not getting what I am doing wrong here. Any help, suggestions are appreciated.

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2 Replies
chm
Staff
Staff

Re: AMD Display Library : Switching from EXTENDED desktop mode to duplicate mode

To enable the clone mode you can use the following code. It shows how to put 2 displays into clone mode:

int                  nNumModes;

ADLMode*            pModes = NULL;

ADLDisplayMap       mapArray;   

ADLDisplayTarget*   pDisplayTargets = NULL;


memset(&(mapArray), 0, sizeof(ADLDisplayMap));

mapArray.iNumDisplayTarget = 2;

mapArray.iDisplayMapIndex  = 0;

// get current display modes

if (ADL_Display_Modes_Get(nAdapterIdx, -1, &nNumModes, &pModes) != ADL_OK)

        return false;

mapArray.displayMode.iAdapterIndex  = nAdapterIdx;

mapArray.displayMode.iModeFlag      = pModes[0].iModeFlag;

mapArray.displayMode.iOrientation   = pModes[0].iOrientation;

mapArray.displayMode.fRefreshRate   = pModes[0].fRefreshRate;

mapArray.displayMode.iColourDepth   = pModes[0].iColourDepth;

mapArray.displayMode.iXPos          = pModes[0].iXPos;

mapArray.displayMode.iYPos          = pModes[0].iYPos;

mapArray.displayMode.iXRes          = pModes[0].iXRes;

mapArray.displayMode.iYRes          = pModes[0].iYRes;

mapArray.iDisplayMapValue           = ADL_DISPLAY_DISPLAYMAP_MANNER_CLONE;

// allocate display target for both displays

pDisplayTargets = (ADLDisplayTarget*) ADL_Alloc(2 * sizeof(ADLDisplayTarget));


memset(pDisplayTargets, 0, 2 * sizeof(ADLDisplayTarget));

pDisplayTargets[0].displayID.iDisplayLogicalAdapterIndex = nAdapterIdx;

pDisplayTargets[0].displayID.iDisplayLogicalIndex = pDspIndexList[0];

pDisplayTargets[0].iDisplayMapIndex = 0;

pDisplayTargets[1].displayID.iDisplayLogicalAdapterIndex = nAdapterIdx;

pDisplayTargets[1].displayID.iDisplayLogicalIndex = pDspIndexList[1];

pDisplayTargets[1].iDisplayMapIndex = 0;


ADL_Display_DisplayMapConfig_Set(nAdapterIdx,1,&mapArray, 2, pDisplayTargets);


ADL_Free(pDisplayTargets);

pDspIndexlist contains the iDisplayLogicalIndex of the display that can be obtained by calling ADL_Display_DisplayInfo_Get

dipika
Journeyman III

Re: AMD Display Library : Switching from EXTENDED desktop mode to duplicate mode

Thanks a lot chm,

Great Work. This Worked for me.

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