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fteqw/engine/sw/vid_ddraw.c

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#include "quakedef.h"
#include "winquake.h"
qboolean vid_palettized;
#ifndef NODIRECTX
HMODULE hinstDDRAW;
LPDIRECTDRAW2 lpDirectDraw;
LPDIRECTDRAWSURFACE lpddsFrontBuffer, lpddsBackBuffer, lpddsOffScreenBuffer;
LPDIRECTDRAWPALETTE lpddpPalette;
extern qbyte vid_curpal[];
qboolean modex;
qboolean vid_initialized;
extern int redbits, redshift;
extern int greenbits, greenshift;
extern int bluebits, blueshift;
//end
static const char *DDrawError (int code);
/*
** DDRAW_SetPalette
**
** Sets the color table in our DIB section, and also sets the system palette
** into an identity mode if we're running in an 8-bit palettized display mode.
**
** The palette is expected to be 1024 bytes, in the format:
**
** R = offset 0
** G = offset 1
** B = offset 2
** A = offset 3
*/
void DDRAW_SetPalette( const unsigned char *pal )
{
static PALETTEENTRY palentries[256]; //does this help any drivers - being static?
int i;
if (!lpddpPalette)
return;
for ( i = 0; i < 256; i++, pal += 3 )
{
palentries[i].peRed = pal[0];
palentries[i].peGreen = pal[1];
palentries[i].peBlue = pal[2];
palentries[i].peFlags = PC_RESERVED | PC_NOCOLLAPSE;
}
if ( lpddpPalette->lpVtbl->SetEntries( lpddpPalette,
0,
0,
256,
palentries ) != DD_OK )
{
Con_Printf( "DDRAW_SetPalette() - SetEntries failed\n" );
}
}
void DDRAW_Shutdown(void)
{
if ( lpddsOffScreenBuffer )
{
Con_SafePrintf( "...releasing offscreen buffer\n");
lpddsOffScreenBuffer->lpVtbl->Unlock( lpddsOffScreenBuffer, vid.buffer );
lpddsOffScreenBuffer->lpVtbl->Release( lpddsOffScreenBuffer );
lpddsOffScreenBuffer = NULL;
}
if ( lpddsBackBuffer )
{
Con_SafePrintf( "...releasing back buffer\n");
lpddsBackBuffer->lpVtbl->Release( lpddsBackBuffer );
lpddsBackBuffer = NULL;
}
if ( lpddsFrontBuffer )
{
Con_SafePrintf( "...releasing front buffer\n");
lpddsFrontBuffer->lpVtbl->Release( lpddsFrontBuffer );
lpddsFrontBuffer = NULL;
}
if ( lpddpPalette)
{
Con_SafePrintf( "...releasing palette\n");
lpddpPalette->lpVtbl->Release ( lpddpPalette );
lpddpPalette = NULL;
}
if ( lpDirectDraw )
{
Con_SafePrintf( "...restoring display mode\n");
lpDirectDraw->lpVtbl->RestoreDisplayMode( lpDirectDraw );
Con_SafePrintf( "...restoring normal coop mode\n");
lpDirectDraw->lpVtbl->SetCooperativeLevel( lpDirectDraw, mainwindow, DDSCL_NORMAL );
Con_SafePrintf( "...releasing lpDirectDraw\n");
lpDirectDraw->lpVtbl->Release( lpDirectDraw );
lpDirectDraw = NULL;
}
if ( hinstDDRAW )
{
Con_SafePrintf( "...freeing library\n");
FreeLibrary( hinstDDRAW );
hinstDDRAW = NULL;
}
}
unsigned short LowBitPos(DWORD dword)
{
int i;
for (i = 0; ; i++)
{
if (dword & (1<<i))
return i;
}
return 32;
}
unsigned short HighBitPos(DWORD dword)
{
int i;
for (i = LowBitPos(dword); ; i++)
{
if (!(dword & (1<<i)))
return i;
}
return 32;
}
qboolean DDRAW_Init(rendererstate_t *info, unsigned char **ppbuffer, int *ppitch )
{
int i;
PALETTEENTRY palentries[256];
DDSURFACEDESC ddsd;
DDSCAPS ddscaps;
LPDIRECTDRAW lpDirectDraw1;
HRESULT ddrval;
HRESULT (WINAPI *QDirectDrawCreate)( GUID FAR *lpGUID, LPVOID *lplpDD, IUnknown FAR * pUnkOuter );
if (!hinstDDRAW)
{
hinstDDRAW = LoadLibrary( "ddraw.dll" );
if (!hinstDDRAW)
{
Con_Printf( "Failed to load ddraw.dll");
goto fail;
}
}
if ( ( QDirectDrawCreate = ( HRESULT (WINAPI *)( GUID FAR *, LPVOID *, IUnknown FAR * ) ) GetProcAddress( hinstDDRAW, "DirectDrawCreate" ) ) == NULL )
{
Con_Printf( "*** DirectDrawCreate == NULL ***\n" );
goto fail;
}
if ( ( ddrval = QDirectDrawCreate( NULL, &lpDirectDraw1, NULL ) ) != DD_OK )
{
Con_Printf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "...Using ddraw2: ");
ddrval=lpDirectDraw1->lpVtbl->QueryInterface(lpDirectDraw1, &IID_IDirectDraw2,(void**)&lpDirectDraw);
lpDirectDraw1->lpVtbl->Release(lpDirectDraw1);
if (ddrval != DD_OK)
{
Con_Printf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
#if 1
/*
** see if linear modes exist first
*/
modex = false;
Con_SafePrintf( "...setting exclusive mode: ");
if ( ( ddrval = lpDirectDraw->lpVtbl->SetCooperativeLevel( lpDirectDraw,
mainwindow,
DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN | DDSCL_ALLOWREBOOT) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n",DDrawError (ddrval) );
goto fail;
}
Con_SafePrintf( "ok\n" );
/*
** try changing the display mode normally
*/
Con_SafePrintf( "...finding display mode\n" );
Con_SafePrintf( "...setting linear mode: " );
if ( ( ddrval = lpDirectDraw->lpVtbl->SetDisplayMode( lpDirectDraw, vid.width, vid.height, r_pixbytes*8, info->rate, 0 ) ) == DD_OK )
{
Con_SafePrintf( "ok\n" );
}
/*
** if no linear mode found, go for modex if we're trying 320x240
*/
else if ( ( vid.width==320 && vid.height==240 ) && info->allow_modex )
{
Con_SafePrintf( "failed\n" );
Con_SafePrintf( "...attempting ModeX 320x240: ");
/*
** reset to normal cooperative level
*/
lpDirectDraw->lpVtbl->SetCooperativeLevel( lpDirectDraw,
mainwindow,
DDSCL_NORMAL );
/*
** set exclusive mode
*/
if ( ( ddrval = lpDirectDraw->lpVtbl->SetCooperativeLevel( lpDirectDraw,
mainwindow,
DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN | DDSCL_NOWINDOWCHANGES | DDSCL_ALLOWMODEX | DDSCL_ALLOWREBOOT) ) != DD_OK )
{
Con_SafePrintf( "failed SCL - %s\n",DDrawError (ddrval) );
goto fail;
}
/*
** change our display mode
*/
if ( ( ddrval = lpDirectDraw->lpVtbl->SetDisplayMode( lpDirectDraw, vid.width, vid.height, r_pixbytes*8, info->rate, 0 ) ) != DD_OK )
{
Con_SafePrintf( "failed SDM - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
modex = true;
}
else
{
Con_SafePrintf( "failed\n" );
goto fail;
}
/*
** create our front buffer
*/
memset( &ddsd, 0, sizeof( ddsd ) );
ddsd.dwSize = sizeof( ddsd );
ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_FLIP | DDSCAPS_COMPLEX;
ddsd.dwBackBufferCount = 1;
ddsd.dwRefreshRate = info->rate;
if (ddsd.dwRefreshRate)
ddsd.dwFlags |= DDSD_REFRESHRATE;
Con_Printf("Rate: %i\n", ddsd.dwRefreshRate);
Con_SafePrintf( "...creating front buffer: ");
if ( ( ddrval = lpDirectDraw->lpVtbl->CreateSurface( lpDirectDraw, &ddsd, &lpddsFrontBuffer, NULL ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
Con_Printf("Rate: %i\n", ddsd.dwRefreshRate);
#else
Con_SafePrintf( "...setting normal mode: ");
if ( ( ddrval = lpDirectDraw->lpVtbl->SetCooperativeLevel( lpDirectDraw,
mainwindow,
DDSCL_NORMAL ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n",DDrawError (ddrval) );
goto fail;
}
Con_SafePrintf( "ok\n" );
i = r_pixbytes;
if (vid_use32bit.value)
r_pixbytes = 4;
else
r_pixbytes = 1;
if (r_pixbytes != i && cls.state)
{
Con_Printf("Cannot change bpp when connected\n");
r_pixbytes = i;
}
/*
** try changing the display mode
*/
/* if ( ( ddrval = lpDirectDraw->lpVtbl->SetDisplayMode( lpDirectDraw, vid.width, vid.height, r_pixbytes*8 ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n",DDrawError (ddrval) );
goto fail;
}
Con_SafePrintf( "ok\n" );
*/
/*
** create our front buffer
*/
memset( &ddsd, 0, sizeof( ddsd ) );
ddsd.dwSize = sizeof( ddsd );
ddsd.dwFlags = /*DDSD_CAPS |*/ DDSD_BACKBUFFERCOUNT;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_COMPLEX;
ddsd.dwBackBufferCount = 1;
ddsd.dwRefreshRate = info->rate;
if (ddsd.dwRefreshRate)
ddsd.dwFlags |= DDSD_REFRESHRATE;
Con_Printf("Rate: %i\n", ddsd.dwRefreshRate);
Con_SafePrintf( "...creating front buffer: ");
if ( ( ddrval = lpDirectDraw->lpVtbl->CreateSurface( lpDirectDraw, &ddsd, &lpddsFrontBuffer, NULL ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
Con_Printf("Rate: %i\n", ddsd.dwRefreshRate);
#endif
/*
** see if we're a ModeX mode
*/
lpddsFrontBuffer->lpVtbl->GetCaps( lpddsFrontBuffer, &ddscaps );
if ( ddscaps.dwCaps & DDSCAPS_MODEX )
Con_SafePrintf( "...using ModeX\n" );
/*
** create our back buffer
*/
ddsd.ddsCaps.dwCaps = DDSCAPS_BACKBUFFER;
Con_SafePrintf( "...creating back buffer: " );
if ( ( ddrval = lpddsFrontBuffer->lpVtbl->GetAttachedSurface( lpddsFrontBuffer, &ddsd.ddsCaps, &lpddsBackBuffer ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
/*
** create our rendering buffer
*/
memset( &ddsd, 0, sizeof( ddsd ) );
ddsd.dwSize = sizeof( ddsd );
ddsd.dwFlags = DDSD_WIDTH | DDSD_HEIGHT | DDSD_CAPS;
ddsd.dwHeight = vid.height;
ddsd.dwWidth = vid.width;
ddsd.dwRefreshRate = info->rate;
if (ddsd.dwRefreshRate)
ddsd.dwFlags |= DDSD_REFRESHRATE;
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY;
Con_SafePrintf( "...creating offscreen buffer: " );
if ( ( ddrval = lpDirectDraw->lpVtbl->CreateSurface( lpDirectDraw, &ddsd, &lpddsOffScreenBuffer, NULL ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
if (r_pixbytes == 1)
{
/*
** create our DIRECTDRAWPALETTE
*/
Con_SafePrintf( "...creating palette: " );
if ( ( ddrval = lpDirectDraw->lpVtbl->CreatePalette( lpDirectDraw,
DDPCAPS_8BIT | DDPCAPS_ALLOW256,
palentries,
&lpddpPalette,
NULL ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
Con_SafePrintf( "...setting palette: " );
if ( ( ddrval = lpddsFrontBuffer->lpVtbl->SetPalette( lpddsFrontBuffer,
lpddpPalette ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
DDRAW_SetPalette( ( const unsigned char * ) vid_curpal );
vid_palettized = true;
}
else
vid_palettized = false;
/*
** lock the back buffer
*/
memset( &ddsd, 0, sizeof( ddsd ) );
ddsd.dwSize = sizeof( ddsd );
Con_SafePrintf( "...locking backbuffer: " );
if ( ( ddrval = lpddsOffScreenBuffer->lpVtbl->Lock( lpddsOffScreenBuffer, NULL, &ddsd, DDLOCK_WAIT, NULL ) ) != DD_OK )
{
Con_SafePrintf( "failed - %s\n", DDrawError( ddrval ) );
goto fail;
}
Con_SafePrintf( "ok\n" );
if (r_pixbytes == 2)
{
DDPIXELFORMAT format;
format.dwSize = sizeof(format);
Con_SafePrintf( "...getting pixel format: " );
if (lpddsFrontBuffer->lpVtbl->GetPixelFormat(lpddsFrontBuffer, &format) == DD_OK)
{
int hi, lo;
lo = LowBitPos(format.dwRBitMask);
hi = HighBitPos(format.dwRBitMask);
Con_SafePrintf("Hi=%i, Low=%i\n", hi, lo);
redshift = lo;
redbits = hi-lo;
lo = LowBitPos(format.dwGBitMask);
hi = HighBitPos(format.dwGBitMask);
Con_SafePrintf("Hi=%i, Low=%i\n", hi, lo);
greenshift = lo;
greenbits = hi-lo;
lo = LowBitPos(format.dwBBitMask);
hi = HighBitPos(format.dwBBitMask);
Con_SafePrintf("Hi=%i, Low=%i\n", hi, lo);
blueshift = lo;
bluebits = hi-lo;
}
else
{
Con_SafePrintf( "failed\n" );
goto fail;
}
Con_SafePrintf( "ok\n" );
}
*ppbuffer = ddsd.lpSurface;
*ppitch = ddsd.lPitch/r_pixbytes;
for ( i = 0; i < vid.height; i++ )
{
memset( *ppbuffer + i * *ppitch, 0, *ppitch );
}
return true;
fail:
Con_SafePrintf( "*** DDraw init failure ***\n" );
DDRAW_Shutdown();
return false;
}
static const char *DDrawError (int code)
{
switch(code) {
case DD_OK:
return "DD_OK";
case DDERR_ALREADYINITIALIZED:
return "DDERR_ALREADYINITIALIZED";
case DDERR_BLTFASTCANTCLIP:
return "DDERR_BLTFASTCANTCLIP";
case DDERR_CANNOTATTACHSURFACE:
return "DDER_CANNOTATTACHSURFACE";
case DDERR_CANNOTDETACHSURFACE:
return "DDERR_CANNOTDETACHSURFACE";
case DDERR_CANTCREATEDC:
return "DDERR_CANTCREATEDC";
case DDERR_CANTDUPLICATE:
return "DDER_CANTDUPLICATE";
case DDERR_CLIPPERISUSINGHWND:
return "DDER_CLIPPERUSINGHWND";
case DDERR_COLORKEYNOTSET:
return "DDERR_COLORKEYNOTSET";
case DDERR_CURRENTLYNOTAVAIL:
return "DDERR_CURRENTLYNOTAVAIL";
case DDERR_DIRECTDRAWALREADYCREATED:
return "DDERR_DIRECTDRAWALREADYCREATED";
case DDERR_EXCEPTION:
return "DDERR_EXCEPTION";
case DDERR_EXCLUSIVEMODEALREADYSET:
return "DDERR_EXCLUSIVEMODEALREADYSET";
case DDERR_GENERIC:
return "DDERR_GENERIC";
case DDERR_HEIGHTALIGN:
return "DDERR_HEIGHTALIGN";
case DDERR_HWNDALREADYSET:
return "DDERR_HWNDALREADYSET";
case DDERR_HWNDSUBCLASSED:
return "DDERR_HWNDSUBCLASSED";
case DDERR_IMPLICITLYCREATED:
return "DDERR_IMPLICITLYCREATED";
case DDERR_INCOMPATIBLEPRIMARY:
return "DDERR_INCOMPATIBLEPRIMARY";
case DDERR_INVALIDCAPS:
return "DDERR_INVALIDCAPS";
case DDERR_INVALIDCLIPLIST:
return "DDERR_INVALIDCLIPLIST";
case DDERR_INVALIDDIRECTDRAWGUID:
return "DDERR_INVALIDDIRECTDRAWGUID";
case DDERR_INVALIDMODE:
return "DDERR_INVALIDMODE";
case DDERR_INVALIDOBJECT:
return "DDERR_INVALIDOBJECT";
case DDERR_INVALIDPARAMS:
return "DDERR_INVALIDPARAMS";
case DDERR_INVALIDPIXELFORMAT:
return "DDERR_INVALIDPIXELFORMAT";
case DDERR_INVALIDPOSITION:
return "DDERR_INVALIDPOSITION";
case DDERR_INVALIDRECT:
return "DDERR_INVALIDRECT";
case DDERR_LOCKEDSURFACES:
return "DDERR_LOCKEDSURFACES";
case DDERR_NO3D:
return "DDERR_NO3D";
case DDERR_NOALPHAHW:
return "DDERR_NOALPHAHW";
case DDERR_NOBLTHW:
return "DDERR_NOBLTHW";
case DDERR_NOCLIPLIST:
return "DDERR_NOCLIPLIST";
case DDERR_NOCLIPPERATTACHED:
return "DDERR_NOCLIPPERATTACHED";
case DDERR_NOCOLORCONVHW:
return "DDERR_NOCOLORCONVHW";
case DDERR_NOCOLORKEY:
return "DDERR_NOCOLORKEY";
case DDERR_NOCOLORKEYHW:
return "DDERR_NOCOLORKEYHW";
case DDERR_NOCOOPERATIVELEVELSET:
return "DDERR_NOCOOPERATIVELEVELSET";
case DDERR_NODC:
return "DDERR_NODC";
case DDERR_NODDROPSHW:
return "DDERR_NODDROPSHW";
case DDERR_NODIRECTDRAWHW:
return "DDERR_NODIRECTDRAWHW";
case DDERR_NOEMULATION:
return "DDERR_NOEMULATION";
case DDERR_NOEXCLUSIVEMODE:
return "DDERR_NOEXCLUSIVEMODE";
case DDERR_NOFLIPHW:
return "DDERR_NOFLIPHW";
case DDERR_NOGDI:
return "DDERR_NOGDI";
case DDERR_NOHWND:
return "DDERR_NOHWND";
case DDERR_NOMIRRORHW:
return "DDERR_NOMIRRORHW";
case DDERR_NOOVERLAYDEST:
return "DDERR_NOOVERLAYDEST";
case DDERR_NOOVERLAYHW:
return "DDERR_NOOVERLAYHW";
case DDERR_NOPALETTEATTACHED:
return "DDERR_NOPALETTEATTACHED";
case DDERR_NOPALETTEHW:
return "DDERR_NOPALETTEHW";
case DDERR_NORASTEROPHW:
return "Operation could not be carried out because there is no appropriate raster op hardware present or available.\0";
case DDERR_NOROTATIONHW:
return "Operation could not be carried out because there is no rotation hardware present or available.\0";
case DDERR_NOSTRETCHHW:
return "Operation could not be carried out because there is no hardware support for stretching.\0";
case DDERR_NOT4BITCOLOR:
return "DirectDrawSurface is not in 4 bit color palette and the requested operation requires 4 bit color palette.\0";
case DDERR_NOT4BITCOLORINDEX:
return "DirectDrawSurface is not in 4 bit color index palette and the requested operation requires 4 bit color index palette.\0";
case DDERR_NOT8BITCOLOR:
return "DDERR_NOT8BITCOLOR";
case DDERR_NOTAOVERLAYSURFACE:
return "Returned when an overlay member is called for a non-overlay surface.\0";
case DDERR_NOTEXTUREHW:
return "Operation could not be carried out because there is no texture mapping hardware present or available.\0";
case DDERR_NOTFLIPPABLE:
return "DDERR_NOTFLIPPABLE";
case DDERR_NOTFOUND:
return "DDERR_NOTFOUND";
case DDERR_NOTLOCKED:
return "DDERR_NOTLOCKED";
case DDERR_NOTPALETTIZED:
return "DDERR_NOTPALETTIZED";
case DDERR_NOVSYNCHW:
return "DDERR_NOVSYNCHW";
case DDERR_NOZBUFFERHW:
return "Operation could not be carried out because there is no hardware support for zbuffer blitting.\0";
case DDERR_NOZOVERLAYHW:
return "Overlay surfaces could not be z layered based on their BltOrder because the hardware does not support z layering of overlays.\0";
case DDERR_OUTOFCAPS:
return "The hardware needed for the requested operation has already been allocated.\0";
case DDERR_OUTOFMEMORY:
return "DDERR_OUTOFMEMORY";
case DDERR_OUTOFVIDEOMEMORY:
return "DDERR_OUTOFVIDEOMEMORY";
case DDERR_OVERLAYCANTCLIP:
return "The hardware does not support clipped overlays.\0";
case DDERR_OVERLAYCOLORKEYONLYONEACTIVE:
return "Can only have ony color key active at one time for overlays.\0";
case DDERR_OVERLAYNOTVISIBLE:
return "Returned when GetOverlayPosition is called on a hidden overlay.\0";
case DDERR_PALETTEBUSY:
return "DDERR_PALETTEBUSY";
case DDERR_PRIMARYSURFACEALREADYEXISTS:
return "DDERR_PRIMARYSURFACEALREADYEXISTS";
case DDERR_REGIONTOOSMALL:
return "Region passed to Clipper::GetClipList is too small.\0";
case DDERR_SURFACEALREADYATTACHED:
return "DDERR_SURFACEALREADYATTACHED";
case DDERR_SURFACEALREADYDEPENDENT:
return "DDERR_SURFACEALREADYDEPENDENT";
case DDERR_SURFACEBUSY:
return "DDERR_SURFACEBUSY";
case DDERR_SURFACEISOBSCURED:
return "Access to surface refused because the surface is obscured.\0";
case DDERR_SURFACELOST:
return "DDERR_SURFACELOST";
case DDERR_SURFACENOTATTACHED:
return "DDERR_SURFACENOTATTACHED";
case DDERR_TOOBIGHEIGHT:
return "Height requested by DirectDraw is too large.\0";
case DDERR_TOOBIGSIZE:
return "Size requested by DirectDraw is too large, but the individual height and width are OK.\0";
case DDERR_TOOBIGWIDTH:
return "Width requested by DirectDraw is too large.\0";
case DDERR_UNSUPPORTED:
return "DDERR_UNSUPPORTED";
case DDERR_UNSUPPORTEDFORMAT:
return "FOURCC format requested is unsupported by DirectDraw.\0";
case DDERR_UNSUPPORTEDMASK:
return "Bitmask in the pixel format requested is unsupported by DirectDraw.\0";
case DDERR_VERTICALBLANKINPROGRESS:
return "Vertical blank is in progress.\0";
case DDERR_WASSTILLDRAWING:
return "DDERR_WASSTILLDRAWING";
case DDERR_WRONGMODE:
return "This surface can not be restored because it was created in a different mode.\0";
case DDERR_XALIGN:
return "Rectangle provided was not horizontally aligned on required boundary.\0";
default:
return "UNKNOWN\0";
}
}
void DDRAW_SwapBuffers (void)
{
RECT r;
HRESULT rval;
DDSURFACEDESC ddsd;
r.left = 0;
r.top = 0;
r.right = vid.width;
r.bottom = vid.height;
lpddsOffScreenBuffer->lpVtbl->Unlock( lpddsOffScreenBuffer, vid.buffer );
if ( modex )
{
if ( ( rval = lpddsBackBuffer->lpVtbl->BltFast( lpddsBackBuffer,
0, 0,
lpddsOffScreenBuffer,
&r,
DDBLTFAST_WAIT ) ) == DDERR_SURFACELOST )
{
lpddsBackBuffer->lpVtbl->Restore( lpddsBackBuffer );
lpddsBackBuffer->lpVtbl->BltFast( lpddsBackBuffer,
0, 0,
lpddsOffScreenBuffer,
&r,
DDBLTFAST_WAIT );
Con_DPrintf("surface lost\n");
}
if ( ( rval = lpddsFrontBuffer->lpVtbl->Flip( lpddsFrontBuffer,
NULL, DDFLIP_WAIT ) ) == DDERR_SURFACELOST )
{
lpddsFrontBuffer->lpVtbl->Restore( lpddsFrontBuffer );
lpddsFrontBuffer->lpVtbl->Flip( lpddsFrontBuffer, NULL, DDFLIP_WAIT );
}
}
else
{
if ( ( rval = lpddsBackBuffer->lpVtbl->BltFast( lpddsFrontBuffer,
0, 0,
lpddsOffScreenBuffer,
&r,
DDBLTFAST_WAIT ) ) == DDERR_SURFACELOST )
{
lpddsBackBuffer->lpVtbl->Restore( lpddsFrontBuffer );
lpddsBackBuffer->lpVtbl->BltFast( lpddsFrontBuffer,
0, 0,
lpddsOffScreenBuffer,
&r,
DDBLTFAST_WAIT );
Con_DPrintf("surface lost\n");
}
}
memset( &ddsd, 0, sizeof( ddsd ) );
ddsd.dwSize = sizeof( ddsd );
if (lpddsOffScreenBuffer->lpVtbl->Lock( lpddsOffScreenBuffer, NULL, &ddsd, DDLOCK_WAIT, NULL ))
Sys_Error("Failed to lock ddraw");
vid.conbuffer = vid.buffer = ddsd.lpSurface;
vid.conrowbytes = vid.rowbytes = ddsd.lPitch/r_pixbytes;
}
#else
qboolean DDRAW_Init(rendererstate_t *info, unsigned char **ppbuffer, int *ppitch )
{
return false;
}
void DDRAW_SwapBuffers (void)
{
}
void DDRAW_Shutdown(void)
{
}
void DDRAW_SetPalette( const unsigned char *pal )
{
}
#endif
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