Convert crlf->lf line endings.

Windows/DOS users should enable core.autocrlf from now on:

  git config --global core.autocrlf true

1 files changed, 638 insertions, 638 deletions

diff --git a/src/mesa/drivers/d3d/D3DUTILS.CPP b/src/mesa/drivers/d3d/D3DUTILS.CPP
index c13d89cd711..02664f96e4d 100644
--- a/src/mesa/drivers/d3d/D3DUTILS.CPP
+++ b/src/mesa/drivers/d3d/D3DUTILS.CPP
@@ -1,638 +1,638 @@
-/*===========================================================================*/

-/*                                                                           */

-/* Mesa-3.0 DirectX 6 Driver                                                 */

-/*                                                                           */

-/* By Leigh McRae                                                            */

-/*                                                                           */

-/* http://www.altsoftware.com/                                               */

-/*                                                                           */

-/* Copyright (c) 1999-1998  alt.software inc.  All Rights Reserved           */

-/*===========================================================================*/

-#include "D3DHAL.h"

-/*===========================================================================*/

-/* Local only functions.                                                     */

-/*===========================================================================*/

-static int  CountTrailingZeros( DWORD dwMask );

-/*===========================================================================*/

-/*  This function is used to get the pointer to the surface and the pitch for*/

-/* the scanline rendering functions.                                         */

-/*===========================================================================*/

-/* RETURN:                                                                   */

-/*===========================================================================*/

-extern "C" DDSURFACEDESC2 *LockHAL( PMESAD3DSHARED pShared, BOOL bBack )

-{

-  PMESAD3DHAL			pHAL = (PMESAD3DHAL)pShared;

-  static DDSURFACEDESC2	ddsd2;

-  HRESULT               	rc;      

-

-  DPF(( DBG_FUNC, "LockHAL();" ));

-

-  /* Set the request structure up first. */

-  memset( &ddsd2, 0, sizeof(DDSURFACEDESC2) );

-  ddsd2.dwSize = sizeof(DDSURFACEDESC2);

-

-  /* Make sure we have enough info. */

-  if ( pHAL )

-  {

-    rc = pHAL->lpDDSRender->Lock( NULL, &ddsd2, DDLOCK_WAIT, NULL );

-    if ( FAILED(rc) )

-    {

-	 RIP( pHAL, "Lock (RENDER) ->", ErrorStringD3D(rc) );

-    }

-  }

-

-  return &ddsd2;

-}

-/*===========================================================================*/

-/*  This is just a simple wrapper.  I probably don't need to do any error    */

-/* checking as the Lock must have worked inorder to get here...              */

-/*===========================================================================*/

-/* RETURN:                                                                   */

-/*===========================================================================*/

-extern "C" void UnlockHAL( PMESAD3DSHARED pShared, BOOL bBack )

-{

-  PMESAD3DHAL	pHAL = (PMESAD3DHAL)pShared;

-  HRESULT		rc;

-

-  DPF(( DBG_FUNC, "UnlockHAL();" ));

-

-  /* Make sure we have enough info. */

-  if ( pHAL )

-  {

-    rc = pHAL->lpDDSRender->Unlock( NULL );

-    if ( FAILED(rc) )

-    {

-	 RIP( pHAL, "Unlock (RENDER) ->", ErrorStringD3D(rc) );

-    }

-  }

-}

-/*===========================================================================*/

-/*  This function will track the main/Primary window that will be used as the*/

-/* target for the Blt in SwapBuffers.  As a side effect the call will check  */

-/* to see if the primary surface is the same size and position as the screen.*/

-/* If they are the same size we will call it fullscreen...                   */

-/*===========================================================================*/

-/* RETURN:                                                                   */

-/*===========================================================================*/

-extern "C" void UpdateScreenPosHAL( PMESAD3DSHARED pShared )

-{

-  PMESAD3DHAL	pHAL = (PMESAD3DHAL)pShared;

-  POINT		pt;

-  DWORD		dwWidth, dwHeight;

-

-  DPF(( DBG_FUNC, "UpdateScreenPosHAL();" ));

-

-  /* Make sure we have enough info. */

-  if ( pHAL != NULL )

-  {

-    /* Update the windows screen position. */

-    GetClientRect( pShared->hwnd, &pShared->rectW );

-    pt.x = pt.y = 0;

-    ClientToScreen( pShared->hwnd, &pt );

-    OffsetRect( &pShared->rectW, pt.x, pt.y);

-

-    /* Compare the primary to the screen. */

-    dwWidth = GetSystemMetrics( SM_CXSCREEN );

-    dwHeight =  GetSystemMetrics( SM_CYSCREEN );

-    if ( (pShared->rectW.left > 0) ||  (pShared->rectW.top > 0)  ||

-	    (pShared->rectW.right > dwWidth) || (pShared->rectW.bottom > dwHeight) )

-	 pShared->bWindow = TRUE;

-    else

-	 pShared->bWindow = FALSE;

-  }

-}

-/*===========================================================================*/

-/*  This function will fill in the pixel info structure defined in D3Dshared.*/

-/* Basicly it will take a DirectDraw pixelformat structure and make scaling  */

-/* values that will convert from 8bit channels to whatever the supplied ddpf */

-/* uses.  Also we will generate shift values that will be used to get move   */

-/* each component of the pixel into place.                                   */

-/*  I have now added a special case for a 1bit alpha channel.  If I find a 1b*/

-/* alpha then I will set the scale to -1.0 which should be unique.  Later I  */

-/* can check the alpha scale value too see if its -1.0 and thus handle it.  I*/

-/* was finding that the case was not working tom my advantage so this is my  */

-/* HACK for the day.  As a TODO I should work on this...                     */

-/*===========================================================================*/

-/* RETURN:                                                                   */

-/*===========================================================================*/

-void	Solve8BitChannelPixelFormat( DDPIXELFORMAT *pddpf, PPIXELINFO pPixel )

-{

-  DPF(( DBG_FUNC, "Solve8BitChannelPixelFromat();" ));

-

-  memset( pPixel, 0, sizeof(PPIXELINFO) );

-

-  /* Check too see if the color space is valid in the PF. */

-  if ( pddpf->dwFlags & DDPF_RGB )

-  {

-    /* Solve the red stuff. */

-    pPixel->dwRMask = pddpf->dwRBitMask;

-    pPixel->rShift = CountTrailingZeros( pPixel->dwRMask );

-    pPixel->rScale = (float)0.00392156 * (float)(pPixel->dwRMask >> pPixel->rShift);

-

-    /* Solve the green thingy's. */

-    pPixel->dwGMask = pddpf->dwGBitMask;

-    pPixel->gShift = CountTrailingZeros( pPixel->dwGMask );

-    pPixel->gScale = (float)0.00392156 * (float)(pPixel->dwGMask >> pPixel->gShift);

-

-    /* Solve the blues. */

-    pPixel->dwBMask = pddpf->dwBBitMask;

-    pPixel->bShift = CountTrailingZeros( pddpf->dwBBitMask );

-    pPixel->bScale = (float)0.00392156 * (float)(pddpf->dwBBitMask >> pPixel->bShift);

-  }

-

-  /* Do the alpha channel if there is one. */

-  if ( pddpf->dwFlags & DDPF_ALPHAPIXELS )

-  {

-    pPixel->dwAMask = pddpf->dwRGBAlphaBitMask;

-    pPixel->aShift = CountTrailingZeros( pPixel->dwAMask );

-

-    /* Special case a 1bit alpha. */

-    if ( (pPixel->dwAMask >> pPixel->aShift) == 1 )

-	 pPixel->aScale = -1.0;

-    else

-	 pPixel->aScale = (float)0.00392156 * (float)(pPixel->dwAMask >> pPixel->aShift);

-  }

-

-  /* Get the size of the pixel in bytes. Should work as dwRGBBitCount is in a union. */

-  pPixel->cb = pddpf->dwRGBBitCount / 8;

-}

-/*===========================================================================*/

-/*  See RETURN :)                                                            */

-/*===========================================================================*/

-/* RETURN: number of contiguous zeros starting from the right.               */

-/*===========================================================================*/

-static int  CountTrailingZeros( DWORD dwMask )

-{

-  DWORD Mask;

-

-  if ( dwMask == 0 ) 

-    return 32;

-

-  /* Can't take credit for this one! */

-  Mask = dwMask & -(int)dwMask;

-  return ((Mask & 0xFFFF0000)!=0) << 4

-         | ((Mask & 0xFF00FF00)!=0) << 3

-         | ((Mask & 0xF0F0F0F0)!=0) << 2

-         | ((Mask & 0xCCCCCCCC)!=0) << 1

-         | ((Mask & 0xAAAAAAAA)!=0);

-}

-/*===========================================================================*/

-/*  This function will convert the DDraw error code to its macro string.  The*/

-/* returned pointer is static so you need not worry about memory managemnet  */

-/* but the error message gets written over from call to call...              */

-/*===========================================================================*/

-/* RETURN: pointer to the single static buffer that hold the error message.  */

-/*===========================================================================*/

-char *ErrorStringD3D( HRESULT hr )

-{

-  static   char  errorString[128];

-

-  switch( hr )

-    {

-    case DDERR_ALREADYINITIALIZED:

-	 strcpy( errorString, "DDERR_ALREADYINITIALIZED" );

-	 break;

-	 

-    case DDERR_CANNOTATTACHSURFACE:

-	 strcpy( errorString, "DDERR_CANNOTATTACHSURFACE" );

-	 break;

-	 

-    case DDERR_CANNOTDETACHSURFACE:

-	 strcpy( errorString, "DDERR_CANNOTDETACHSURFACE" );

-	 break;

-	 

-    case DDERR_CURRENTLYNOTAVAIL:

-	 strcpy( errorString, "DDERR_CURRENTLYNOTAVAIL" );

-	 break;

-	 

-    case DDERR_EXCEPTION:

-	 strcpy( errorString, "DDERR_EXCEPTION" );

-	 break;

-	 

-    case DDERR_GENERIC:

-	 strcpy( errorString, "DDERR_GENERIC" );

-	 break;

-	 

-    case DDERR_HEIGHTALIGN:

-	 strcpy( errorString, "DDERR_HEIGHTALIGN" );

-	 break;

-	 

-    case DDERR_INCOMPATIBLEPRIMARY:

-	 strcpy( errorString, "DDERR_INCOMPATIBLEPRIMARY" );

-	 break;

-	 

-    case DDERR_INVALIDCAPS:

-	 strcpy( errorString, "DDERR_INVALIDCAPS" );

-	 break;

-	 

-    case DDERR_INVALIDCLIPLIST:

-	 strcpy( errorString, "DDERR_INVALIDCLIPLIST" );

-	 break;

-	 

-    case DDERR_INVALIDMODE:

-	 strcpy( errorString, "DDERR_INVALIDMODE" );

-	 break;

-	 

-    case DDERR_INVALIDOBJECT:

-	 strcpy( errorString, "DDERR_INVALIDOBJECT" );

-	 break;

-	 

-    case DDERR_INVALIDPARAMS:

-	 strcpy( errorString, "DDERR_INVALIDPARAMS" );

-	 break;

-	 

-    case DDERR_INVALIDPIXELFORMAT:

-	 strcpy( errorString, "DDERR_INVALIDPIXELFORMAT" );

-	 break;

-	 

-    case DDERR_INVALIDRECT:

-	 strcpy( errorString, "DDERR_INVALIDRECT" );

-	 break;

-	 

-    case DDERR_LOCKEDSURFACES:

-	 strcpy( errorString, "DDERR_LOCKEDSURFACES" );

-	 break;

-	 

-    case DDERR_NO3D:

-	 strcpy( errorString, "DDERR_NO3D" );

-	 break;

-	 

-    case DDERR_NOALPHAHW:

-	 strcpy( errorString, "DDERR_NOALPHAHW" );

-	 break;

-	 

-    case DDERR_NOCLIPLIST:

-	 strcpy( errorString, "DDERR_NOCLIPLIST" );

-	 break;

-	 

-    case DDERR_NOCOLORCONVHW:

-	 strcpy( errorString, "DDERR_NOCOLORCONVHW" );

-	 break;

-	 

-    case DDERR_NOCOOPERATIVELEVELSET:

-	 strcpy( errorString, "DDERR_NOCOOPERATIVELEVELSET" );

-	 break;

-	 

-    case DDERR_NOCOLORKEY:

-	 strcpy( errorString, "DDERR_NOCOLORKEY" );

-	 break;

-	 

-    case DDERR_NOCOLORKEYHW:

-	 strcpy( errorString, "DDERR_NOCOLORKEYHW" );

-	 break;

-	 

-    case DDERR_NODIRECTDRAWSUPPORT:

-	 strcpy( errorString, "DDERR_NODIRECTDRAWSUPPORT" );

-	 break;

-	 

-    case DDERR_NOEXCLUSIVEMODE:

-	 strcpy( errorString, "DDERR_NOEXCLUSIVEMODE" );

-	 break;

-	 

-    case DDERR_NOFLIPHW:

-	 strcpy( errorString, "DDERR_NOFLIPHW" );

-	 break;

-	 

-    case DDERR_NOGDI:

-	 strcpy( errorString, "DDERR_NOGDI" );

-	 break;

-	 

-    case DDERR_NOMIRRORHW:

-	 strcpy( errorString, "DDERR_NOMIRRORHW" );

-	 break;

-	 

-    case DDERR_NOTFOUND:

-	 strcpy( errorString, "DDERR_NOTFOUND" );

-	 break;

-	 

-    case DDERR_NOOVERLAYHW:

-	 strcpy( errorString, "DDERR_NOOVERLAYHW" );

-	 break;

-	 

-    case DDERR_OVERLAPPINGRECTS:

-	 strcpy( errorString, "DDERR_OVERLAPPINGRECTS" );

-	 break;

-	 

-    case DDERR_NORASTEROPHW:

-	 strcpy( errorString, "DDERR_NORASTEROPHW" );

-	 break;

-	 

-    case DDERR_NOROTATIONHW:

-	 strcpy( errorString, "DDERR_NOROTATIONHW" );

-	 break;

-	 

-    case DDERR_NOSTRETCHHW:

-	 strcpy( errorString, "DDERR_NOSTRETCHHW" );

-	 break;

-	 

-    case DDERR_NOT4BITCOLOR:

-	 strcpy( errorString, "DDERR_NOT4BITCOLOR" );

-	 break;

-	 

-    case DDERR_NOT4BITCOLORINDEX:

-	 strcpy( errorString, "DDERR_NOT4BITCOLORINDEX" );

-	 break;

-	 

-    case DDERR_NOT8BITCOLOR:

-	 strcpy( errorString, "DDERR_NOT8BITCOLOR" );

-	 break;

-	 

-    case DDERR_NOTEXTUREHW:

-	 strcpy( errorString, "DDERR_NOTEXTUREHW" );

-	 break;

-	 

-    case DDERR_NOVSYNCHW:

-	 strcpy( errorString, "DDERR_NOVSYNCHW" );

-	 break;

-	 

-    case DDERR_NOZBUFFERHW:

-	 strcpy( errorString, "DDERR_NOZBUFFERHW" );

-	 break;

-

-    case DDERR_NOZOVERLAYHW:

-	 strcpy( errorString, "DDERR_NOZOVERLAYHW" );

-	 break;

-	 

-    case DDERR_OUTOFCAPS:

-	 strcpy( errorString, "DDERR_OUTOFCAPS" );

-	 break;

-	 

-    case DDERR_OUTOFMEMORY:

-	 strcpy( errorString, "DDERR_OUTOFMEMORY" );

-	 break;

-	 

-    case DDERR_OUTOFVIDEOMEMORY:

-	 strcpy( errorString, "DDERR_OUTOFVIDEOMEMORY" );

-	 break;

-	 

-    case DDERR_OVERLAYCANTCLIP:

-	 strcpy( errorString, "DDERR_OVERLAYCANTCLIP" );

-	 break;

-	 

-    case DDERR_OVERLAYCOLORKEYONLYONEACTIVE:

-	 strcpy( errorString, "DDERR_OVERLAYCOLORKEYONLYONEACTIVE" );

-	 break;

-	 

-    case DDERR_PALETTEBUSY:

-	 strcpy( errorString, "DDERR_PALETTEBUSY" );

-	 break;

-	 

-    case DDERR_COLORKEYNOTSET:

-	 strcpy( errorString, "DDERR_COLORKEYNOTSET" );

-	 break;

-	 

-    case DDERR_SURFACEALREADYATTACHED:

-	 strcpy( errorString, "DDERR_SURFACEALREADYATTACHED" );

-	 break;

-	 

-    case DDERR_SURFACEALREADYDEPENDENT:

-	 strcpy( errorString, "DDERR_SURFACEALREADYDEPENDENT" );

-	 break;

-	 

-    case DDERR_SURFACEBUSY:

-	 strcpy( errorString, "DDERR_SURFACEBUSY" );

-	 break;

-	 

-    case DDERR_CANTLOCKSURFACE:

-	 strcpy( errorString, "DDERR_CANTLOCKSURFACE" );

-	 break;

-

-    case DDERR_SURFACEISOBSCURED:

-	 strcpy( errorString, "DDERR_SURFACEISOBSCURED" );

-	 break;

-

-    case DDERR_SURFACELOST:

-	 strcpy( errorString, "DDERR_SURFACELOST" );

-	 break;

-	 

-    case DDERR_SURFACENOTATTACHED:

-	 strcpy( errorString, "DDERR_SURFACENOTATTACHED" );

-	 break;

-	 

-    case DDERR_TOOBIGHEIGHT:

-	 strcpy( errorString, "DDERR_TOOBIGHEIGHT" );

-	 break;

-	 

-    case DDERR_TOOBIGSIZE:

-	 strcpy( errorString, "DDERR_TOOBIGSIZE" );

-	 break;

-	 

-    case DDERR_TOOBIGWIDTH:

-	 strcpy( errorString, "DDERR_TOOBIGWIDTH" );

-	 break;

-	 

-    case DDERR_UNSUPPORTED:

-	 strcpy( errorString, "DDERR_UNSUPPORTED" );

-	 break;

-	 

-    case DDERR_UNSUPPORTEDFORMAT:

-	 strcpy( errorString, "DDERR_UNSUPPORTEDFORMAT" );

-	 break;

-	 

-    case DDERR_UNSUPPORTEDMASK:

-	 strcpy( errorString, "DDERR_UNSUPPORTEDMASK" );

-	 break;

-	 

-    case DDERR_INVALIDSTREAM:

-	 strcpy( errorString, "DDERR_INVALIDSTREAM" );

-	 break;

-	 

-    case DDERR_VERTICALBLANKINPROGRESS:

-	 strcpy( errorString, "DDERR_VERTICALBLANKINPROGRESS" );

-	 break;

-	 

-    case DDERR_WASSTILLDRAWING:

-	 strcpy( errorString, "DDERR_WASSTILLDRAWING" );

-	 break;

-	 

-    case DDERR_XALIGN:

-	 strcpy( errorString, "DDERR_XALIGN" );

-	 break;

-	 

-    case DDERR_INVALIDDIRECTDRAWGUID:

-	 strcpy( errorString, "DDERR_INVALIDDIRECTDRAWGUID" );

-	 break;

-	 

-    case DDERR_DIRECTDRAWALREADYCREATED:

-	 strcpy( errorString, "DDERR_DIRECTDRAWALREADYCREATED" );

-	 break;

-	 

-    case DDERR_NODIRECTDRAWHW:

-	 strcpy( errorString, "DDERR_NODIRECTDRAWHW" );

-	 break;

-	 

-    case DDERR_PRIMARYSURFACEALREADYEXISTS:

-	 strcpy( errorString, "DDERR_PRIMARYSURFACEALREADYEXISTS" );

-	 break;

-	 

-    case DDERR_NOEMULATION:

-	 strcpy( errorString, "DDERR_NOEMULATION" );

-	 break;

-	 

-    case DDERR_REGIONTOOSMALL:

-	 strcpy( errorString, "DDERR_REGIONTOOSMALL" );

-	 break;

-	 

-    case DDERR_CLIPPERISUSINGHWND:

-	 strcpy( errorString, "DDERR_CLIPPERISUSINGHWND" );

-	 break;

-	 

-    case DDERR_NOCLIPPERATTACHED:

-	 strcpy( errorString, "DDERR_NOCLIPPERATTACHED" );

-	 break;

-	 

-    case DDERR_NOHWND:

-	 strcpy( errorString, "DDERR_NOHWND" );

-	 break;

-	 

-    case DDERR_HWNDSUBCLASSED:

-	 strcpy( errorString, "DDERR_HWNDSUBCLASSED" );

-	 break;

-	 

-    case DDERR_HWNDALREADYSET:

-	 strcpy( errorString, "DDERR_HWNDALREADYSET" );

-	 break;

-	 

-    case DDERR_NOPALETTEATTACHED:

-	 strcpy( errorString, "DDERR_NOPALETTEATTACHED" );

-	 break;

-	 

-    case DDERR_NOPALETTEHW:

-	 strcpy( errorString, "DDERR_NOPALETTEHW" );

-	 break;

-	 

-    case DDERR_BLTFASTCANTCLIP:

-         strcpy( errorString, "DDERR_BLTFASTCANTCLIP" );

-         break;

-

-      case DDERR_NOBLTHW:

-         strcpy( errorString, "DDERR_NOBLTHW" );

-         break;

-

-      case DDERR_NODDROPSHW:

-         strcpy( errorString, "DDERR_NODDROPSHW" );

-         break;

-

-      case DDERR_OVERLAYNOTVISIBLE:

-         strcpy( errorString, "DDERR_OVERLAYNOTVISIBLE" );

-         break;

-

-      case DDERR_NOOVERLAYDEST:

-         strcpy( errorString, "DDERR_NOOVERLAYDEST" );

-         break;

-

-      case DDERR_INVALIDPOSITION:

-         strcpy( errorString, "DDERR_INVALIDPOSITION" );

-         break;

-

-      case DDERR_NOTAOVERLAYSURFACE:

-         strcpy( errorString, "DDERR_NOTAOVERLAYSURFACE" );

-         break;

-

-      case DDERR_EXCLUSIVEMODEALREADYSET:

-         strcpy( errorString, "DDERR_EXCLUSIVEMODEALREADYSET" );

-         break;

-

-      case DDERR_NOTFLIPPABLE:

-         strcpy( errorString, "DDERR_NOTFLIPPABLE" );

-         break;

-

-      case DDERR_CANTDUPLICATE:

-         strcpy( errorString, "DDERR_CANTDUPLICATE" );

-         break;

-

-      case DDERR_NOTLOCKED:

-         strcpy( errorString, "DDERR_NOTLOCKED" );

-         break;

-

-      case DDERR_CANTCREATEDC:

-         strcpy( errorString, "DDERR_CANTCREATEDC" );

-         break;

-

-      case DDERR_NODC:

-         strcpy( errorString, "DDERR_NODC" );

-         break;

-

-      case DDERR_WRONGMODE:

-         strcpy( errorString, "DDERR_WRONGMODE" );

-         break;

-

-      case DDERR_IMPLICITLYCREATED:

-         strcpy( errorString, "DDERR_IMPLICITLYCREATED" );

-         break;

-

-      case DDERR_NOTPALETTIZED:

-         strcpy( errorString, "DDERR_NOTPALETTIZED" );

-         break;

-

-      case DDERR_UNSUPPORTEDMODE:

-         strcpy( errorString, "DDERR_UNSUPPORTEDMODE" );

-         break;

-

-      case DDERR_NOMIPMAPHW:

-         strcpy( errorString, "DDERR_NOMIPMAPHW" );

-         break;

-

-      case DDERR_INVALIDSURFACETYPE:

-         strcpy( errorString, "DDERR_INVALIDSURFACETYPE" );

-         break;

-

-      case DDERR_NOOPTIMIZEHW:

-         strcpy( errorString, "DDERR_NOOPTIMIZEHW" );

-         break;

-

-      case DDERR_NOTLOADED:

-         strcpy( errorString, "DDERR_NOTLOADED" );

-         break;

-

-      case DDERR_NOFOCUSWINDOW:

-         strcpy( errorString, "DDERR_NOFOCUSWINDOW" );

-         break;

-

-      case DDERR_DCALREADYCREATED:

-         strcpy( errorString, "DDERR_DCALREADYCREATED" );

-         break;

-

-      case DDERR_NONONLOCALVIDMEM:

-         strcpy( errorString, "DDERR_NONONLOCALVIDMEM" );

-         break;

-

-      case DDERR_CANTPAGELOCK:

-         strcpy( errorString, "DDERR_CANTPAGELOCK" );

-         break;

-

-      case DDERR_CANTPAGEUNLOCK:

-         strcpy( errorString, "DDERR_CANTPAGEUNLOCK" );

-         break;

-

-      case DDERR_NOTPAGELOCKED:

-         strcpy( errorString, "DDERR_NOTPAGELOCKED" );

-         break;

-

-      case DDERR_MOREDATA:

-         strcpy( errorString, "DDERR_MOREDATA" );

-         break;

-

-      case DDERR_EXPIRED:

-         strcpy( errorString, "DDERR_EXPIRED" );

-         break;

-

-      case DDERR_VIDEONOTACTIVE:

-         strcpy( errorString, "DDERR_VIDEONOTACTIVE" );

-         break;

-

-      case DDERR_DEVICEDOESNTOWNSURFACE:

-         strcpy( errorString, "DDERR_DEVICEDOESNTOWNSURFACE" );

-         break;

-

-      case DDERR_NOTINITIALIZED:

-         strcpy( errorString, "DDERR_NOTINITIALIZED" );

-         break;

-

-      default:

-         strcpy( errorString, "<unknown error code>" );

-         break;

-   }

-

-   return &errorString[0];

-} 

+/*===========================================================================*/
+/*                                                                           */
+/* Mesa-3.0 DirectX 6 Driver                                                 */
+/*                                                                           */
+/* By Leigh McRae                                                            */
+/*                                                                           */
+/* http://www.altsoftware.com/                                               */
+/*                                                                           */
+/* Copyright (c) 1999-1998  alt.software inc.  All Rights Reserved           */
+/*===========================================================================*/
+#include "D3DHAL.h"
+/*===========================================================================*/
+/* Local only functions.                                                     */
+/*===========================================================================*/
+static int  CountTrailingZeros( DWORD dwMask );
+/*===========================================================================*/
+/*  This function is used to get the pointer to the surface and the pitch for*/
+/* the scanline rendering functions.                                         */
+/*===========================================================================*/
+/* RETURN:                                                                   */
+/*===========================================================================*/
+extern "C" DDSURFACEDESC2 *LockHAL( PMESAD3DSHARED pShared, BOOL bBack )
+{
+  PMESAD3DHAL			pHAL = (PMESAD3DHAL)pShared;
+  static DDSURFACEDESC2	ddsd2;
+  HRESULT               	rc;      
+
+  DPF(( DBG_FUNC, "LockHAL();" ));
+
+  /* Set the request structure up first. */
+  memset( &ddsd2, 0, sizeof(DDSURFACEDESC2) );
+  ddsd2.dwSize = sizeof(DDSURFACEDESC2);
+
+  /* Make sure we have enough info. */
+  if ( pHAL )
+  {
+    rc = pHAL->lpDDSRender->Lock( NULL, &ddsd2, DDLOCK_WAIT, NULL );
+    if ( FAILED(rc) )
+    {
+	 RIP( pHAL, "Lock (RENDER) ->", ErrorStringD3D(rc) );
+    }
+  }
+
+  return &ddsd2;
+}
+/*===========================================================================*/
+/*  This is just a simple wrapper.  I probably don't need to do any error    */
+/* checking as the Lock must have worked inorder to get here...              */
+/*===========================================================================*/
+/* RETURN:                                                                   */
+/*===========================================================================*/
+extern "C" void UnlockHAL( PMESAD3DSHARED pShared, BOOL bBack )
+{
+  PMESAD3DHAL	pHAL = (PMESAD3DHAL)pShared;
+  HRESULT		rc;
+
+  DPF(( DBG_FUNC, "UnlockHAL();" ));
+
+  /* Make sure we have enough info. */
+  if ( pHAL )
+  {
+    rc = pHAL->lpDDSRender->Unlock( NULL );
+    if ( FAILED(rc) )
+    {
+	 RIP( pHAL, "Unlock (RENDER) ->", ErrorStringD3D(rc) );
+    }
+  }
+}
+/*===========================================================================*/
+/*  This function will track the main/Primary window that will be used as the*/
+/* target for the Blt in SwapBuffers.  As a side effect the call will check  */
+/* to see if the primary surface is the same size and position as the screen.*/
+/* If they are the same size we will call it fullscreen...                   */
+/*===========================================================================*/
+/* RETURN:                                                                   */
+/*===========================================================================*/
+extern "C" void UpdateScreenPosHAL( PMESAD3DSHARED pShared )
+{
+  PMESAD3DHAL	pHAL = (PMESAD3DHAL)pShared;
+  POINT		pt;
+  DWORD		dwWidth, dwHeight;
+
+  DPF(( DBG_FUNC, "UpdateScreenPosHAL();" ));
+
+  /* Make sure we have enough info. */
+  if ( pHAL != NULL )
+  {
+    /* Update the windows screen position. */
+    GetClientRect( pShared->hwnd, &pShared->rectW );
+    pt.x = pt.y = 0;
+    ClientToScreen( pShared->hwnd, &pt );
+    OffsetRect( &pShared->rectW, pt.x, pt.y);
+
+    /* Compare the primary to the screen. */
+    dwWidth = GetSystemMetrics( SM_CXSCREEN );
+    dwHeight =  GetSystemMetrics( SM_CYSCREEN );
+    if ( (pShared->rectW.left > 0) ||  (pShared->rectW.top > 0)  ||
+	    (pShared->rectW.right > dwWidth) || (pShared->rectW.bottom > dwHeight) )
+	 pShared->bWindow = TRUE;
+    else
+	 pShared->bWindow = FALSE;
+  }
+}
+/*===========================================================================*/
+/*  This function will fill in the pixel info structure defined in D3Dshared.*/
+/* Basicly it will take a DirectDraw pixelformat structure and make scaling  */
+/* values that will convert from 8bit channels to whatever the supplied ddpf */
+/* uses.  Also we will generate shift values that will be used to get move   */
+/* each component of the pixel into place.                                   */
+/*  I have now added a special case for a 1bit alpha channel.  If I find a 1b*/
+/* alpha then I will set the scale to -1.0 which should be unique.  Later I  */
+/* can check the alpha scale value too see if its -1.0 and thus handle it.  I*/
+/* was finding that the case was not working tom my advantage so this is my  */
+/* HACK for the day.  As a TODO I should work on this...                     */
+/*===========================================================================*/
+/* RETURN:                                                                   */
+/*===========================================================================*/
+void	Solve8BitChannelPixelFormat( DDPIXELFORMAT *pddpf, PPIXELINFO pPixel )
+{
+  DPF(( DBG_FUNC, "Solve8BitChannelPixelFromat();" ));
+
+  memset( pPixel, 0, sizeof(PPIXELINFO) );
+
+  /* Check too see if the color space is valid in the PF. */
+  if ( pddpf->dwFlags & DDPF_RGB )
+  {
+    /* Solve the red stuff. */
+    pPixel->dwRMask = pddpf->dwRBitMask;
+    pPixel->rShift = CountTrailingZeros( pPixel->dwRMask );
+    pPixel->rScale = (float)0.00392156 * (float)(pPixel->dwRMask >> pPixel->rShift);
+
+    /* Solve the green thingy's. */
+    pPixel->dwGMask = pddpf->dwGBitMask;
+    pPixel->gShift = CountTrailingZeros( pPixel->dwGMask );
+    pPixel->gScale = (float)0.00392156 * (float)(pPixel->dwGMask >> pPixel->gShift);
+
+    /* Solve the blues. */
+    pPixel->dwBMask = pddpf->dwBBitMask;
+    pPixel->bShift = CountTrailingZeros( pddpf->dwBBitMask );
+    pPixel->bScale = (float)0.00392156 * (float)(pddpf->dwBBitMask >> pPixel->bShift);
+  }
+
+  /* Do the alpha channel if there is one. */
+  if ( pddpf->dwFlags & DDPF_ALPHAPIXELS )
+  {
+    pPixel->dwAMask = pddpf->dwRGBAlphaBitMask;
+    pPixel->aShift = CountTrailingZeros( pPixel->dwAMask );
+
+    /* Special case a 1bit alpha. */
+    if ( (pPixel->dwAMask >> pPixel->aShift) == 1 )
+	 pPixel->aScale = -1.0;
+    else
+	 pPixel->aScale = (float)0.00392156 * (float)(pPixel->dwAMask >> pPixel->aShift);
+  }
+
+  /* Get the size of the pixel in bytes. Should work as dwRGBBitCount is in a union. */
+  pPixel->cb = pddpf->dwRGBBitCount / 8;
+}
+/*===========================================================================*/
+/*  See RETURN :)                                                            */
+/*===========================================================================*/
+/* RETURN: number of contiguous zeros starting from the right.               */
+/*===========================================================================*/
+static int  CountTrailingZeros( DWORD dwMask )
+{
+  DWORD Mask;
+
+  if ( dwMask == 0 ) 
+    return 32;
+
+  /* Can't take credit for this one! */
+  Mask = dwMask & -(int)dwMask;
+  return ((Mask & 0xFFFF0000)!=0) << 4
+         | ((Mask & 0xFF00FF00)!=0) << 3
+         | ((Mask & 0xF0F0F0F0)!=0) << 2
+         | ((Mask & 0xCCCCCCCC)!=0) << 1
+         | ((Mask & 0xAAAAAAAA)!=0);
+}
+/*===========================================================================*/
+/*  This function will convert the DDraw error code to its macro string.  The*/
+/* returned pointer is static so you need not worry about memory managemnet  */
+/* but the error message gets written over from call to call...              */
+/*===========================================================================*/
+/* RETURN: pointer to the single static buffer that hold the error message.  */
+/*===========================================================================*/
+char *ErrorStringD3D( HRESULT hr )
+{
+  static   char  errorString[128];
+
+  switch( hr )
+    {
+    case DDERR_ALREADYINITIALIZED:
+	 strcpy( errorString, "DDERR_ALREADYINITIALIZED" );
+	 break;
+	 
+    case DDERR_CANNOTATTACHSURFACE:
+	 strcpy( errorString, "DDERR_CANNOTATTACHSURFACE" );
+	 break;
+	 
+    case DDERR_CANNOTDETACHSURFACE:
+	 strcpy( errorString, "DDERR_CANNOTDETACHSURFACE" );
+	 break;
+	 
+    case DDERR_CURRENTLYNOTAVAIL:
+	 strcpy( errorString, "DDERR_CURRENTLYNOTAVAIL" );
+	 break;
+	 
+    case DDERR_EXCEPTION:
+	 strcpy( errorString, "DDERR_EXCEPTION" );
+	 break;
+	 
+    case DDERR_GENERIC:
+	 strcpy( errorString, "DDERR_GENERIC" );
+	 break;
+	 
+    case DDERR_HEIGHTALIGN:
+	 strcpy( errorString, "DDERR_HEIGHTALIGN" );
+	 break;
+	 
+    case DDERR_INCOMPATIBLEPRIMARY:
+	 strcpy( errorString, "DDERR_INCOMPATIBLEPRIMARY" );
+	 break;
+	 
+    case DDERR_INVALIDCAPS:
+	 strcpy( errorString, "DDERR_INVALIDCAPS" );
+	 break;
+	 
+    case DDERR_INVALIDCLIPLIST:
+	 strcpy( errorString, "DDERR_INVALIDCLIPLIST" );
+	 break;
+	 
+    case DDERR_INVALIDMODE:
+	 strcpy( errorString, "DDERR_INVALIDMODE" );
+	 break;
+	 
+    case DDERR_INVALIDOBJECT:
+	 strcpy( errorString, "DDERR_INVALIDOBJECT" );
+	 break;
+	 
+    case DDERR_INVALIDPARAMS:
+	 strcpy( errorString, "DDERR_INVALIDPARAMS" );
+	 break;
+	 
+    case DDERR_INVALIDPIXELFORMAT:
+	 strcpy( errorString, "DDERR_INVALIDPIXELFORMAT" );
+	 break;
+	 
+    case DDERR_INVALIDRECT:
+	 strcpy( errorString, "DDERR_INVALIDRECT" );
+	 break;
+	 
+    case DDERR_LOCKEDSURFACES:
+	 strcpy( errorString, "DDERR_LOCKEDSURFACES" );
+	 break;
+	 
+    case DDERR_NO3D:
+	 strcpy( errorString, "DDERR_NO3D" );
+	 break;
+	 
+    case DDERR_NOALPHAHW:
+	 strcpy( errorString, "DDERR_NOALPHAHW" );
+	 break;
+	 
+    case DDERR_NOCLIPLIST:
+	 strcpy( errorString, "DDERR_NOCLIPLIST" );
+	 break;
+	 
+    case DDERR_NOCOLORCONVHW:
+	 strcpy( errorString, "DDERR_NOCOLORCONVHW" );
+	 break;
+	 
+    case DDERR_NOCOOPERATIVELEVELSET:
+	 strcpy( errorString, "DDERR_NOCOOPERATIVELEVELSET" );
+	 break;
+	 
+    case DDERR_NOCOLORKEY:
+	 strcpy( errorString, "DDERR_NOCOLORKEY" );
+	 break;
+	 
+    case DDERR_NOCOLORKEYHW:
+	 strcpy( errorString, "DDERR_NOCOLORKEYHW" );
+	 break;
+	 
+    case DDERR_NODIRECTDRAWSUPPORT:
+	 strcpy( errorString, "DDERR_NODIRECTDRAWSUPPORT" );
+	 break;
+	 
+    case DDERR_NOEXCLUSIVEMODE:
+	 strcpy( errorString, "DDERR_NOEXCLUSIVEMODE" );
+	 break;
+	 
+    case DDERR_NOFLIPHW:
+	 strcpy( errorString, "DDERR_NOFLIPHW" );
+	 break;
+	 
+    case DDERR_NOGDI:
+	 strcpy( errorString, "DDERR_NOGDI" );
+	 break;
+	 
+    case DDERR_NOMIRRORHW:
+	 strcpy( errorString, "DDERR_NOMIRRORHW" );
+	 break;
+	 
+    case DDERR_NOTFOUND:
+	 strcpy( errorString, "DDERR_NOTFOUND" );
+	 break;
+	 
+    case DDERR_NOOVERLAYHW:
+	 strcpy( errorString, "DDERR_NOOVERLAYHW" );
+	 break;
+	 
+    case DDERR_OVERLAPPINGRECTS:
+	 strcpy( errorString, "DDERR_OVERLAPPINGRECTS" );
+	 break;
+	 
+    case DDERR_NORASTEROPHW:
+	 strcpy( errorString, "DDERR_NORASTEROPHW" );
+	 break;
+	 
+    case DDERR_NOROTATIONHW:
+	 strcpy( errorString, "DDERR_NOROTATIONHW" );
+	 break;
+	 
+    case DDERR_NOSTRETCHHW:
+	 strcpy( errorString, "DDERR_NOSTRETCHHW" );
+	 break;
+	 
+    case DDERR_NOT4BITCOLOR:
+	 strcpy( errorString, "DDERR_NOT4BITCOLOR" );
+	 break;
+	 
+    case DDERR_NOT4BITCOLORINDEX:
+	 strcpy( errorString, "DDERR_NOT4BITCOLORINDEX" );
+	 break;
+	 
+    case DDERR_NOT8BITCOLOR:
+	 strcpy( errorString, "DDERR_NOT8BITCOLOR" );
+	 break;
+	 
+    case DDERR_NOTEXTUREHW:
+	 strcpy( errorString, "DDERR_NOTEXTUREHW" );
+	 break;
+	 
+    case DDERR_NOVSYNCHW:
+	 strcpy( errorString, "DDERR_NOVSYNCHW" );
+	 break;
+	 
+    case DDERR_NOZBUFFERHW:
+	 strcpy( errorString, "DDERR_NOZBUFFERHW" );
+	 break;
+
+    case DDERR_NOZOVERLAYHW:
+	 strcpy( errorString, "DDERR_NOZOVERLAYHW" );
+	 break;
+	 
+    case DDERR_OUTOFCAPS:
+	 strcpy( errorString, "DDERR_OUTOFCAPS" );
+	 break;
+	 
+    case DDERR_OUTOFMEMORY:
+	 strcpy( errorString, "DDERR_OUTOFMEMORY" );
+	 break;
+	 
+    case DDERR_OUTOFVIDEOMEMORY:
+	 strcpy( errorString, "DDERR_OUTOFVIDEOMEMORY" );
+	 break;
+	 
+    case DDERR_OVERLAYCANTCLIP:
+	 strcpy( errorString, "DDERR_OVERLAYCANTCLIP" );
+	 break;
+	 
+    case DDERR_OVERLAYCOLORKEYONLYONEACTIVE:
+	 strcpy( errorString, "DDERR_OVERLAYCOLORKEYONLYONEACTIVE" );
+	 break;
+	 
+    case DDERR_PALETTEBUSY:
+	 strcpy( errorString, "DDERR_PALETTEBUSY" );
+	 break;
+	 
+    case DDERR_COLORKEYNOTSET:
+	 strcpy( errorString, "DDERR_COLORKEYNOTSET" );
+	 break;
+	 
+    case DDERR_SURFACEALREADYATTACHED:
+	 strcpy( errorString, "DDERR_SURFACEALREADYATTACHED" );
+	 break;
+	 
+    case DDERR_SURFACEALREADYDEPENDENT:
+	 strcpy( errorString, "DDERR_SURFACEALREADYDEPENDENT" );
+	 break;
+	 
+    case DDERR_SURFACEBUSY:
+	 strcpy( errorString, "DDERR_SURFACEBUSY" );
+	 break;
+	 
+    case DDERR_CANTLOCKSURFACE:
+	 strcpy( errorString, "DDERR_CANTLOCKSURFACE" );
+	 break;
+
+    case DDERR_SURFACEISOBSCURED:
+	 strcpy( errorString, "DDERR_SURFACEISOBSCURED" );
+	 break;
+
+    case DDERR_SURFACELOST:
+	 strcpy( errorString, "DDERR_SURFACELOST" );
+	 break;
+	 
+    case DDERR_SURFACENOTATTACHED:
+	 strcpy( errorString, "DDERR_SURFACENOTATTACHED" );
+	 break;
+	 
+    case DDERR_TOOBIGHEIGHT:
+	 strcpy( errorString, "DDERR_TOOBIGHEIGHT" );
+	 break;
+	 
+    case DDERR_TOOBIGSIZE:
+	 strcpy( errorString, "DDERR_TOOBIGSIZE" );
+	 break;
+	 
+    case DDERR_TOOBIGWIDTH:
+	 strcpy( errorString, "DDERR_TOOBIGWIDTH" );
+	 break;
+	 
+    case DDERR_UNSUPPORTED:
+	 strcpy( errorString, "DDERR_UNSUPPORTED" );
+	 break;
+	 
+    case DDERR_UNSUPPORTEDFORMAT:
+	 strcpy( errorString, "DDERR_UNSUPPORTEDFORMAT" );
+	 break;
+	 
+    case DDERR_UNSUPPORTEDMASK:
+	 strcpy( errorString, "DDERR_UNSUPPORTEDMASK" );
+	 break;
+	 
+    case DDERR_INVALIDSTREAM:
+	 strcpy( errorString, "DDERR_INVALIDSTREAM" );
+	 break;
+	 
+    case DDERR_VERTICALBLANKINPROGRESS:
+	 strcpy( errorString, "DDERR_VERTICALBLANKINPROGRESS" );
+	 break;
+	 
+    case DDERR_WASSTILLDRAWING:
+	 strcpy( errorString, "DDERR_WASSTILLDRAWING" );
+	 break;
+	 
+    case DDERR_XALIGN:
+	 strcpy( errorString, "DDERR_XALIGN" );
+	 break;
+	 
+    case DDERR_INVALIDDIRECTDRAWGUID:
+	 strcpy( errorString, "DDERR_INVALIDDIRECTDRAWGUID" );
+	 break;
+	 
+    case DDERR_DIRECTDRAWALREADYCREATED:
+	 strcpy( errorString, "DDERR_DIRECTDRAWALREADYCREATED" );
+	 break;
+	 
+    case DDERR_NODIRECTDRAWHW:
+	 strcpy( errorString, "DDERR_NODIRECTDRAWHW" );
+	 break;
+	 
+    case DDERR_PRIMARYSURFACEALREADYEXISTS:
+	 strcpy( errorString, "DDERR_PRIMARYSURFACEALREADYEXISTS" );
+	 break;
+	 
+    case DDERR_NOEMULATION:
+	 strcpy( errorString, "DDERR_NOEMULATION" );
+	 break;
+	 
+    case DDERR_REGIONTOOSMALL:
+	 strcpy( errorString, "DDERR_REGIONTOOSMALL" );
+	 break;
+	 
+    case DDERR_CLIPPERISUSINGHWND:
+	 strcpy( errorString, "DDERR_CLIPPERISUSINGHWND" );
+	 break;
+	 
+    case DDERR_NOCLIPPERATTACHED:
+	 strcpy( errorString, "DDERR_NOCLIPPERATTACHED" );
+	 break;
+	 
+    case DDERR_NOHWND:
+	 strcpy( errorString, "DDERR_NOHWND" );
+	 break;
+	 
+    case DDERR_HWNDSUBCLASSED:
+	 strcpy( errorString, "DDERR_HWNDSUBCLASSED" );
+	 break;
+	 
+    case DDERR_HWNDALREADYSET:
+	 strcpy( errorString, "DDERR_HWNDALREADYSET" );
+	 break;
+	 
+    case DDERR_NOPALETTEATTACHED:
+	 strcpy( errorString, "DDERR_NOPALETTEATTACHED" );
+	 break;
+	 
+    case DDERR_NOPALETTEHW:
+	 strcpy( errorString, "DDERR_NOPALETTEHW" );
+	 break;
+	 
+    case DDERR_BLTFASTCANTCLIP:
+         strcpy( errorString, "DDERR_BLTFASTCANTCLIP" );
+         break;
+
+      case DDERR_NOBLTHW:
+         strcpy( errorString, "DDERR_NOBLTHW" );
+         break;
+
+      case DDERR_NODDROPSHW:
+         strcpy( errorString, "DDERR_NODDROPSHW" );
+         break;
+
+      case DDERR_OVERLAYNOTVISIBLE:
+         strcpy( errorString, "DDERR_OVERLAYNOTVISIBLE" );
+         break;
+
+      case DDERR_NOOVERLAYDEST:
+         strcpy( errorString, "DDERR_NOOVERLAYDEST" );
+         break;
+
+      case DDERR_INVALIDPOSITION:
+         strcpy( errorString, "DDERR_INVALIDPOSITION" );
+         break;
+
+      case DDERR_NOTAOVERLAYSURFACE:
+         strcpy( errorString, "DDERR_NOTAOVERLAYSURFACE" );
+         break;
+
+      case DDERR_EXCLUSIVEMODEALREADYSET:
+         strcpy( errorString, "DDERR_EXCLUSIVEMODEALREADYSET" );
+         break;
+
+      case DDERR_NOTFLIPPABLE:
+         strcpy( errorString, "DDERR_NOTFLIPPABLE" );
+         break;
+
+      case DDERR_CANTDUPLICATE:
+         strcpy( errorString, "DDERR_CANTDUPLICATE" );
+         break;
+
+      case DDERR_NOTLOCKED:
+         strcpy( errorString, "DDERR_NOTLOCKED" );
+         break;
+
+      case DDERR_CANTCREATEDC:
+         strcpy( errorString, "DDERR_CANTCREATEDC" );
+         break;
+
+      case DDERR_NODC:
+         strcpy( errorString, "DDERR_NODC" );
+         break;
+
+      case DDERR_WRONGMODE:
+         strcpy( errorString, "DDERR_WRONGMODE" );
+         break;
+
+      case DDERR_IMPLICITLYCREATED:
+         strcpy( errorString, "DDERR_IMPLICITLYCREATED" );
+         break;
+
+      case DDERR_NOTPALETTIZED:
+         strcpy( errorString, "DDERR_NOTPALETTIZED" );
+         break;
+
+      case DDERR_UNSUPPORTEDMODE:
+         strcpy( errorString, "DDERR_UNSUPPORTEDMODE" );
+         break;
+
+      case DDERR_NOMIPMAPHW:
+         strcpy( errorString, "DDERR_NOMIPMAPHW" );
+         break;
+
+      case DDERR_INVALIDSURFACETYPE:
+         strcpy( errorString, "DDERR_INVALIDSURFACETYPE" );
+         break;
+
+      case DDERR_NOOPTIMIZEHW:
+         strcpy( errorString, "DDERR_NOOPTIMIZEHW" );
+         break;
+
+      case DDERR_NOTLOADED:
+         strcpy( errorString, "DDERR_NOTLOADED" );
+         break;
+
+      case DDERR_NOFOCUSWINDOW:
+         strcpy( errorString, "DDERR_NOFOCUSWINDOW" );
+         break;
+
+      case DDERR_DCALREADYCREATED:
+         strcpy( errorString, "DDERR_DCALREADYCREATED" );
+         break;
+
+      case DDERR_NONONLOCALVIDMEM:
+         strcpy( errorString, "DDERR_NONONLOCALVIDMEM" );
+         break;
+
+      case DDERR_CANTPAGELOCK:
+         strcpy( errorString, "DDERR_CANTPAGELOCK" );
+         break;
+
+      case DDERR_CANTPAGEUNLOCK:
+         strcpy( errorString, "DDERR_CANTPAGEUNLOCK" );
+         break;
+
+      case DDERR_NOTPAGELOCKED:
+         strcpy( errorString, "DDERR_NOTPAGELOCKED" );
+         break;
+
+      case DDERR_MOREDATA:
+         strcpy( errorString, "DDERR_MOREDATA" );
+         break;
+
+      case DDERR_EXPIRED:
+         strcpy( errorString, "DDERR_EXPIRED" );
+         break;
+
+      case DDERR_VIDEONOTACTIVE:
+         strcpy( errorString, "DDERR_VIDEONOTACTIVE" );
+         break;
+
+      case DDERR_DEVICEDOESNTOWNSURFACE:
+         strcpy( errorString, "DDERR_DEVICEDOESNTOWNSURFACE" );
+         break;
+
+      case DDERR_NOTINITIALIZED:
+         strcpy( errorString, "DDERR_NOTINITIALIZED" );
+         break;
+
+      default:
+         strcpy( errorString, "<unknown error code>" );
+         break;
+   }
+
+   return &errorString[0];
+}