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authorwyatt8740 <wyatt8740@yahoo.com>2014-01-06 12:02:16 -0500
committerwyatt8740 <wyatt8740@yahoo.com>2014-01-06 12:02:16 -0500
commita8f828a066773a59fdf646299359d35ae0e845af (patch)
tree86123409fc6f231cf4136e81159b63cb1e9ec102 /WinQuake/vid_vga.c
parentb2951690415054ae8705c07f8df7a4ba7cde382a (diff)
downloadquake-pum-a8f828a066773a59fdf646299359d35ae0e845af.tar.gz
Removed accidental upload of copyrighted map files
Diffstat (limited to 'WinQuake/vid_vga.c')
-rw-r--r--WinQuake/vid_vga.c956
1 files changed, 478 insertions, 478 deletions
diff --git a/WinQuake/vid_vga.c b/WinQuake/vid_vga.c
index 6fbec9d..47c0084 100644
--- a/WinQuake/vid_vga.c
+++ b/WinQuake/vid_vga.c
@@ -1,478 +1,478 @@
-/*
-Copyright (C) 1996-1997 Id Software, Inc.
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-as published by the Free Software Foundation; either version 2
-of the License, or (at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
-See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-*/
-//
-// vid_vga.c: VGA-specific DOS video stuff
-//
-
-// TODO: proper handling of page-swap failure
-
-#include <dos.h>
-
-#include "quakedef.h"
-#include "d_local.h"
-#include "dosisms.h"
-#include "vid_dos.h"
-#include <dpmi.h>
-
-extern regs_t regs;
-
-int VGA_width, VGA_height, VGA_rowbytes, VGA_bufferrowbytes;
-byte *VGA_pagebase;
-vmode_t *VGA_pcurmode;
-
-static int VGA_planar;
-static int VGA_numpages;
-static int VGA_buffersize;
-
-void *vid_surfcache;
-int vid_surfcachesize;
-
-int VGA_highhunkmark;
-
-#include "vgamodes.h"
-
-#define NUMVIDMODES (sizeof(vgavidmodes) / sizeof(vgavidmodes[0]))
-
-void VGA_UpdatePlanarScreen (void *srcbuffer);
-
-static byte backingbuf[48*24];
-
-/*
-================
-VGA_BeginDirectRect
-================
-*/
-void VGA_BeginDirectRect (viddef_t *lvid, struct vmode_s *pcurrentmode, int x,
- int y, byte *pbitmap, int width, int height)
-{
- int i, j, k, plane, reps, repshift;
-
- if (!lvid->direct)
- return;
-
- if (lvid->aspect > 1.5)
- {
- reps = 2;
- repshift = 1;
- }
- else
- {
- reps = 1;
- repshift = 0;
- }
-
- if (pcurrentmode->planar)
- {
- for (plane=0 ; plane<4 ; plane++)
- {
- // select the correct plane for reading and writing
- outportb (SC_INDEX, MAP_MASK);
- outportb (SC_DATA, 1 << plane);
- outportb (GC_INDEX, READ_MAP);
- outportb (GC_DATA, plane);
-
- for (i=0 ; i<(height << repshift) ; i += reps)
- {
- for (k=0 ; k<reps ; k++)
- {
- for (j=0 ; j<(width >> 2) ; j++)
- {
- backingbuf[(i + k) * 24 + (j << 2) + plane] =
- lvid->direct[(y + i + k) * VGA_rowbytes +
- (x >> 2) + j];
- lvid->direct[(y + i + k) * VGA_rowbytes + (x>>2) + j] =
- pbitmap[(i >> repshift) * 24 +
- (j << 2) + plane];
- }
- }
- }
- }
- }
- else
- {
- for (i=0 ; i<(height << repshift) ; i += reps)
- {
- for (j=0 ; j<reps ; j++)
- {
- memcpy (&backingbuf[(i + j) * 24],
- lvid->direct + x + ((y << repshift) + i + j) *
- VGA_rowbytes,
- width);
- memcpy (lvid->direct + x + ((y << repshift) + i + j) *
- VGA_rowbytes,
- &pbitmap[(i >> repshift) * width],
- width);
- }
- }
- }
-}
-
-
-/*
-================
-VGA_EndDirectRect
-================
-*/
-void VGA_EndDirectRect (viddef_t *lvid, struct vmode_s *pcurrentmode, int x,
- int y, int width, int height)
-{
- int i, j, k, plane, reps, repshift;
-
- if (!lvid->direct)
- return;
-
- if (lvid->aspect > 1.5)
- {
- reps = 2;
- repshift = 1;
- }
- else
- {
- reps = 1;
- repshift = 0;
- }
-
- if (pcurrentmode->planar)
- {
- for (plane=0 ; plane<4 ; plane++)
- {
- // select the correct plane for writing
- outportb (SC_INDEX, MAP_MASK);
- outportb (SC_DATA, 1 << plane);
-
- for (i=0 ; i<(height << repshift) ; i += reps)
- {
- for (k=0 ; k<reps ; k++)
- {
- for (j=0 ; j<(width >> 2) ; j++)
- {
- lvid->direct[(y + i + k) * VGA_rowbytes + (x>>2) + j] =
- backingbuf[(i + k) * 24 + (j << 2) + plane];
- }
- }
- }
- }
- }
- else
- {
- for (i=0 ; i<(height << repshift) ; i += reps)
- {
- for (j=0 ; j<reps ; j++)
- {
- memcpy (lvid->direct + x + ((y << repshift) + i + j) *
- VGA_rowbytes,
- &backingbuf[(i + j) * 24],
- width);
- }
- }
- }
-}
-
-
-/*
-================
-VGA_Init
-================
-*/
-void VGA_Init (void)
-{
- int i;
-
-// link together all the VGA modes
- for (i=0 ; i<(NUMVIDMODES - 1) ; i++)
- {
- vgavidmodes[i].pnext = &vgavidmodes[i+1];
- }
-
-// add the VGA modes at the start of the mode list
- vgavidmodes[NUMVIDMODES-1].pnext = pvidmodes;
- pvidmodes = &vgavidmodes[0];
-
- numvidmodes += NUMVIDMODES;
-}
-
-
-/*
-================
-VGA_WaitVsync
-================
-*/
-void VGA_WaitVsync (void)
-{
- while ((inportb (0x3DA) & 0x08) == 0)
- ;
-}
-
-
-/*
-================
-VGA_ClearVideoMem
-================
-*/
-void VGA_ClearVideoMem (int planar)
-{
-
- if (planar)
- {
- // enable all planes for writing
- outportb (SC_INDEX, MAP_MASK);
- outportb (SC_DATA, 0x0F);
- }
-
- Q_memset (VGA_pagebase, 0, VGA_rowbytes * VGA_height);
-}
-
-/*
-================
-VGA_FreeAndAllocVidbuffer
-================
-*/
-qboolean VGA_FreeAndAllocVidbuffer (viddef_t *lvid, int allocnewbuffer)
-{
- int tsize, tbuffersize;
-
- if (allocnewbuffer)
- {
- // alloc an extra line in case we want to wrap, and allocate the z-buffer
- tbuffersize = (lvid->rowbytes * (lvid->height + 1)) +
- (lvid->width * lvid->height * sizeof (*d_pzbuffer));
- }
- else
- {
- // just allocate the z-buffer
- tbuffersize = lvid->width * lvid->height * sizeof (*d_pzbuffer);
- }
-
- tsize = D_SurfaceCacheForRes (lvid->width, lvid->height);
-
- tbuffersize += tsize;
-
-// see if there's enough memory, allowing for the normal mode 0x13 pixel,
-// z, and surface buffers
- if ((host_parms.memsize - tbuffersize + SURFCACHE_SIZE_AT_320X200 +
- 0x10000 * 3) < minimum_memory)
- {
- Con_Printf ("Not enough memory for video mode\n");
- VGA_pcurmode = NULL; // so no further accesses to the buffer are
- // attempted, particularly when clearing
- return false; // not enough memory for mode
- }
-
- VGA_buffersize = tbuffersize;
- vid_surfcachesize = tsize;
-
- if (d_pzbuffer)
- {
- D_FlushCaches ();
- Hunk_FreeToHighMark (VGA_highhunkmark);
- d_pzbuffer = NULL;
- }
-
- VGA_highhunkmark = Hunk_HighMark ();
-
- d_pzbuffer = Hunk_HighAllocName (VGA_buffersize, "video");
-
- vid_surfcache = (byte *)d_pzbuffer
- + lvid->width * lvid->height * sizeof (*d_pzbuffer);
-
- if (allocnewbuffer)
- {
- lvid->buffer = (void *)( (byte *)vid_surfcache + vid_surfcachesize);
- lvid->conbuffer = lvid->buffer;
- }
-
- return true;
-}
-
-
-/*
-================
-VGA_CheckAdequateMem
-================
-*/
-qboolean VGA_CheckAdequateMem (int width, int height, int rowbytes,
- int allocnewbuffer)
-{
- int tbuffersize;
-
- tbuffersize = width * height * sizeof (*d_pzbuffer);
-
- if (allocnewbuffer)
- {
- // alloc an extra line in case we want to wrap, and allocate the z-buffer
- tbuffersize += (rowbytes * (height + 1));
- }
-
- tbuffersize += D_SurfaceCacheForRes (width, height);
-
-// see if there's enough memory, allowing for the normal mode 0x13 pixel,
-// z, and surface buffers
- if ((host_parms.memsize - tbuffersize + SURFCACHE_SIZE_AT_320X200 +
- 0x10000 * 3) < minimum_memory)
- {
- return false; // not enough memory for mode
- }
-
- return true;
-}
-
-
-/*
-================
-VGA_InitMode
-================
-*/
-int VGA_InitMode (viddef_t *lvid, vmode_t *pcurrentmode)
-{
- vextra_t *pextra;
-
- pextra = pcurrentmode->pextradata;
-
- if (!VGA_FreeAndAllocVidbuffer (lvid, pextra->vidbuffer))
- return -1; // memory alloc failed
-
- if (VGA_pcurmode)
- VGA_ClearVideoMem (VGA_pcurmode->planar);
-
-// mode 0x13 is the base for all the Mode X-class mode sets
- regs.h.ah = 0;
- regs.h.al = 0x13;
- dos_int86(0x10);
-
- VGA_pagebase = (void *)real2ptr(0xa0000);
- lvid->direct = (pixel_t *)VGA_pagebase;
-
-// set additional registers as needed
- VideoRegisterSet (pextra->pregset);
-
- VGA_numpages = 1;
- lvid->numpages = VGA_numpages;
-
- VGA_width = (lvid->width + 0x1F) & ~0x1F;
- VGA_height = lvid->height;
- VGA_planar = pcurrentmode->planar;
- if (VGA_planar)
- VGA_rowbytes = lvid->rowbytes / 4;
- else
- VGA_rowbytes = lvid->rowbytes;
- VGA_bufferrowbytes = lvid->rowbytes;
- lvid->colormap = host_colormap;
- lvid->fullbright = 256 - LittleLong (*((int *)lvid->colormap + 2048));
-
- lvid->maxwarpwidth = WARP_WIDTH;
- lvid->maxwarpheight = WARP_HEIGHT;
-
- lvid->conbuffer = lvid->buffer;
- lvid->conrowbytes = lvid->rowbytes;
- lvid->conwidth = lvid->width;
- lvid->conheight = lvid->height;
-
- VGA_pcurmode = pcurrentmode;
-
- VGA_ClearVideoMem (pcurrentmode->planar);
-
- if (_vid_wait_override.value)
- {
- Cvar_SetValue ("vid_wait", (float)VID_WAIT_VSYNC);
- }
- else
- {
- Cvar_SetValue ("vid_wait", (float)VID_WAIT_NONE);
- }
-
- D_InitCaches (vid_surfcache, vid_surfcachesize);
-
- return 1;
-}
-
-
-/*
-================
-VGA_SetPalette
-================
-*/
-void VGA_SetPalette(viddef_t *lvid, vmode_t *pcurrentmode, unsigned char *pal)
-{
- int shiftcomponents=2;
- int i;
-
- UNUSED(lvid);
- UNUSED(pcurrentmode);
-
- dos_outportb(0x3c8, 0);
- for (i=0 ; i<768 ; i++)
- outportb(0x3c9, pal[i]>>shiftcomponents);
-}
-
-
-/*
-================
-VGA_SwapBuffersCopy
-================
-*/
-void VGA_SwapBuffersCopy (viddef_t *lvid, vmode_t *pcurrentmode,
- vrect_t *rects)
-{
-
- UNUSED(pcurrentmode);
-
-// TODO: can write a dword at a time
-// TODO: put in ASM
-// TODO: copy only specified rectangles
- if (VGA_planar)
- {
-
- // TODO: copy only specified rectangles
-
- VGA_UpdatePlanarScreen (lvid->buffer);
- }
- else
- {
- while (rects)
- {
- VGA_UpdateLinearScreen (
- lvid->buffer + rects->x + (rects->y * lvid->rowbytes),
- VGA_pagebase + rects->x + (rects->y * VGA_rowbytes),
- rects->width,
- rects->height,
- lvid->rowbytes,
- VGA_rowbytes);
-
- rects = rects->pnext;
- }
- }
-}
-
-
-/*
-================
-VGA_SwapBuffers
-================
-*/
-void VGA_SwapBuffers (viddef_t *lvid, vmode_t *pcurrentmode, vrect_t *rects)
-{
- UNUSED(lvid);
-
- if (vid_wait.value == VID_WAIT_VSYNC)
- VGA_WaitVsync ();
-
- VGA_SwapBuffersCopy (lvid, pcurrentmode, rects);
-}
-
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+//
+// vid_vga.c: VGA-specific DOS video stuff
+//
+
+// TODO: proper handling of page-swap failure
+
+#include <dos.h>
+
+#include "quakedef.h"
+#include "d_local.h"
+#include "dosisms.h"
+#include "vid_dos.h"
+#include <dpmi.h>
+
+extern regs_t regs;
+
+int VGA_width, VGA_height, VGA_rowbytes, VGA_bufferrowbytes;
+byte *VGA_pagebase;
+vmode_t *VGA_pcurmode;
+
+static int VGA_planar;
+static int VGA_numpages;
+static int VGA_buffersize;
+
+void *vid_surfcache;
+int vid_surfcachesize;
+
+int VGA_highhunkmark;
+
+#include "vgamodes.h"
+
+#define NUMVIDMODES (sizeof(vgavidmodes) / sizeof(vgavidmodes[0]))
+
+void VGA_UpdatePlanarScreen (void *srcbuffer);
+
+static byte backingbuf[48*24];
+
+/*
+================
+VGA_BeginDirectRect
+================
+*/
+void VGA_BeginDirectRect (viddef_t *lvid, struct vmode_s *pcurrentmode, int x,
+ int y, byte *pbitmap, int width, int height)
+{
+ int i, j, k, plane, reps, repshift;
+
+ if (!lvid->direct)
+ return;
+
+ if (lvid->aspect > 1.5)
+ {
+ reps = 2;
+ repshift = 1;
+ }
+ else
+ {
+ reps = 1;
+ repshift = 0;
+ }
+
+ if (pcurrentmode->planar)
+ {
+ for (plane=0 ; plane<4 ; plane++)
+ {
+ // select the correct plane for reading and writing
+ outportb (SC_INDEX, MAP_MASK);
+ outportb (SC_DATA, 1 << plane);
+ outportb (GC_INDEX, READ_MAP);
+ outportb (GC_DATA, plane);
+
+ for (i=0 ; i<(height << repshift) ; i += reps)
+ {
+ for (k=0 ; k<reps ; k++)
+ {
+ for (j=0 ; j<(width >> 2) ; j++)
+ {
+ backingbuf[(i + k) * 24 + (j << 2) + plane] =
+ lvid->direct[(y + i + k) * VGA_rowbytes +
+ (x >> 2) + j];
+ lvid->direct[(y + i + k) * VGA_rowbytes + (x>>2) + j] =
+ pbitmap[(i >> repshift) * 24 +
+ (j << 2) + plane];
+ }
+ }
+ }
+ }
+ }
+ else
+ {
+ for (i=0 ; i<(height << repshift) ; i += reps)
+ {
+ for (j=0 ; j<reps ; j++)
+ {
+ memcpy (&backingbuf[(i + j) * 24],
+ lvid->direct + x + ((y << repshift) + i + j) *
+ VGA_rowbytes,
+ width);
+ memcpy (lvid->direct + x + ((y << repshift) + i + j) *
+ VGA_rowbytes,
+ &pbitmap[(i >> repshift) * width],
+ width);
+ }
+ }
+ }
+}
+
+
+/*
+================
+VGA_EndDirectRect
+================
+*/
+void VGA_EndDirectRect (viddef_t *lvid, struct vmode_s *pcurrentmode, int x,
+ int y, int width, int height)
+{
+ int i, j, k, plane, reps, repshift;
+
+ if (!lvid->direct)
+ return;
+
+ if (lvid->aspect > 1.5)
+ {
+ reps = 2;
+ repshift = 1;
+ }
+ else
+ {
+ reps = 1;
+ repshift = 0;
+ }
+
+ if (pcurrentmode->planar)
+ {
+ for (plane=0 ; plane<4 ; plane++)
+ {
+ // select the correct plane for writing
+ outportb (SC_INDEX, MAP_MASK);
+ outportb (SC_DATA, 1 << plane);
+
+ for (i=0 ; i<(height << repshift) ; i += reps)
+ {
+ for (k=0 ; k<reps ; k++)
+ {
+ for (j=0 ; j<(width >> 2) ; j++)
+ {
+ lvid->direct[(y + i + k) * VGA_rowbytes + (x>>2) + j] =
+ backingbuf[(i + k) * 24 + (j << 2) + plane];
+ }
+ }
+ }
+ }
+ }
+ else
+ {
+ for (i=0 ; i<(height << repshift) ; i += reps)
+ {
+ for (j=0 ; j<reps ; j++)
+ {
+ memcpy (lvid->direct + x + ((y << repshift) + i + j) *
+ VGA_rowbytes,
+ &backingbuf[(i + j) * 24],
+ width);
+ }
+ }
+ }
+}
+
+
+/*
+================
+VGA_Init
+================
+*/
+void VGA_Init (void)
+{
+ int i;
+
+// link together all the VGA modes
+ for (i=0 ; i<(NUMVIDMODES - 1) ; i++)
+ {
+ vgavidmodes[i].pnext = &vgavidmodes[i+1];
+ }
+
+// add the VGA modes at the start of the mode list
+ vgavidmodes[NUMVIDMODES-1].pnext = pvidmodes;
+ pvidmodes = &vgavidmodes[0];
+
+ numvidmodes += NUMVIDMODES;
+}
+
+
+/*
+================
+VGA_WaitVsync
+================
+*/
+void VGA_WaitVsync (void)
+{
+ while ((inportb (0x3DA) & 0x08) == 0)
+ ;
+}
+
+
+/*
+================
+VGA_ClearVideoMem
+================
+*/
+void VGA_ClearVideoMem (int planar)
+{
+
+ if (planar)
+ {
+ // enable all planes for writing
+ outportb (SC_INDEX, MAP_MASK);
+ outportb (SC_DATA, 0x0F);
+ }
+
+ Q_memset (VGA_pagebase, 0, VGA_rowbytes * VGA_height);
+}
+
+/*
+================
+VGA_FreeAndAllocVidbuffer
+================
+*/
+qboolean VGA_FreeAndAllocVidbuffer (viddef_t *lvid, int allocnewbuffer)
+{
+ int tsize, tbuffersize;
+
+ if (allocnewbuffer)
+ {
+ // alloc an extra line in case we want to wrap, and allocate the z-buffer
+ tbuffersize = (lvid->rowbytes * (lvid->height + 1)) +
+ (lvid->width * lvid->height * sizeof (*d_pzbuffer));
+ }
+ else
+ {
+ // just allocate the z-buffer
+ tbuffersize = lvid->width * lvid->height * sizeof (*d_pzbuffer);
+ }
+
+ tsize = D_SurfaceCacheForRes (lvid->width, lvid->height);
+
+ tbuffersize += tsize;
+
+// see if there's enough memory, allowing for the normal mode 0x13 pixel,
+// z, and surface buffers
+ if ((host_parms.memsize - tbuffersize + SURFCACHE_SIZE_AT_320X200 +
+ 0x10000 * 3) < minimum_memory)
+ {
+ Con_Printf ("Not enough memory for video mode\n");
+ VGA_pcurmode = NULL; // so no further accesses to the buffer are
+ // attempted, particularly when clearing
+ return false; // not enough memory for mode
+ }
+
+ VGA_buffersize = tbuffersize;
+ vid_surfcachesize = tsize;
+
+ if (d_pzbuffer)
+ {
+ D_FlushCaches ();
+ Hunk_FreeToHighMark (VGA_highhunkmark);
+ d_pzbuffer = NULL;
+ }
+
+ VGA_highhunkmark = Hunk_HighMark ();
+
+ d_pzbuffer = Hunk_HighAllocName (VGA_buffersize, "video");
+
+ vid_surfcache = (byte *)d_pzbuffer
+ + lvid->width * lvid->height * sizeof (*d_pzbuffer);
+
+ if (allocnewbuffer)
+ {
+ lvid->buffer = (void *)( (byte *)vid_surfcache + vid_surfcachesize);
+ lvid->conbuffer = lvid->buffer;
+ }
+
+ return true;
+}
+
+
+/*
+================
+VGA_CheckAdequateMem
+================
+*/
+qboolean VGA_CheckAdequateMem (int width, int height, int rowbytes,
+ int allocnewbuffer)
+{
+ int tbuffersize;
+
+ tbuffersize = width * height * sizeof (*d_pzbuffer);
+
+ if (allocnewbuffer)
+ {
+ // alloc an extra line in case we want to wrap, and allocate the z-buffer
+ tbuffersize += (rowbytes * (height + 1));
+ }
+
+ tbuffersize += D_SurfaceCacheForRes (width, height);
+
+// see if there's enough memory, allowing for the normal mode 0x13 pixel,
+// z, and surface buffers
+ if ((host_parms.memsize - tbuffersize + SURFCACHE_SIZE_AT_320X200 +
+ 0x10000 * 3) < minimum_memory)
+ {
+ return false; // not enough memory for mode
+ }
+
+ return true;
+}
+
+
+/*
+================
+VGA_InitMode
+================
+*/
+int VGA_InitMode (viddef_t *lvid, vmode_t *pcurrentmode)
+{
+ vextra_t *pextra;
+
+ pextra = pcurrentmode->pextradata;
+
+ if (!VGA_FreeAndAllocVidbuffer (lvid, pextra->vidbuffer))
+ return -1; // memory alloc failed
+
+ if (VGA_pcurmode)
+ VGA_ClearVideoMem (VGA_pcurmode->planar);
+
+// mode 0x13 is the base for all the Mode X-class mode sets
+ regs.h.ah = 0;
+ regs.h.al = 0x13;
+ dos_int86(0x10);
+
+ VGA_pagebase = (void *)real2ptr(0xa0000);
+ lvid->direct = (pixel_t *)VGA_pagebase;
+
+// set additional registers as needed
+ VideoRegisterSet (pextra->pregset);
+
+ VGA_numpages = 1;
+ lvid->numpages = VGA_numpages;
+
+ VGA_width = (lvid->width + 0x1F) & ~0x1F;
+ VGA_height = lvid->height;
+ VGA_planar = pcurrentmode->planar;
+ if (VGA_planar)
+ VGA_rowbytes = lvid->rowbytes / 4;
+ else
+ VGA_rowbytes = lvid->rowbytes;
+ VGA_bufferrowbytes = lvid->rowbytes;
+ lvid->colormap = host_colormap;
+ lvid->fullbright = 256 - LittleLong (*((int *)lvid->colormap + 2048));
+
+ lvid->maxwarpwidth = WARP_WIDTH;
+ lvid->maxwarpheight = WARP_HEIGHT;
+
+ lvid->conbuffer = lvid->buffer;
+ lvid->conrowbytes = lvid->rowbytes;
+ lvid->conwidth = lvid->width;
+ lvid->conheight = lvid->height;
+
+ VGA_pcurmode = pcurrentmode;
+
+ VGA_ClearVideoMem (pcurrentmode->planar);
+
+ if (_vid_wait_override.value)
+ {
+ Cvar_SetValue ("vid_wait", (float)VID_WAIT_VSYNC);
+ }
+ else
+ {
+ Cvar_SetValue ("vid_wait", (float)VID_WAIT_NONE);
+ }
+
+ D_InitCaches (vid_surfcache, vid_surfcachesize);
+
+ return 1;
+}
+
+
+/*
+================
+VGA_SetPalette
+================
+*/
+void VGA_SetPalette(viddef_t *lvid, vmode_t *pcurrentmode, unsigned char *pal)
+{
+ int shiftcomponents=2;
+ int i;
+
+ UNUSED(lvid);
+ UNUSED(pcurrentmode);
+
+ dos_outportb(0x3c8, 0);
+ for (i=0 ; i<768 ; i++)
+ outportb(0x3c9, pal[i]>>shiftcomponents);
+}
+
+
+/*
+================
+VGA_SwapBuffersCopy
+================
+*/
+void VGA_SwapBuffersCopy (viddef_t *lvid, vmode_t *pcurrentmode,
+ vrect_t *rects)
+{
+
+ UNUSED(pcurrentmode);
+
+// TODO: can write a dword at a time
+// TODO: put in ASM
+// TODO: copy only specified rectangles
+ if (VGA_planar)
+ {
+
+ // TODO: copy only specified rectangles
+
+ VGA_UpdatePlanarScreen (lvid->buffer);
+ }
+ else
+ {
+ while (rects)
+ {
+ VGA_UpdateLinearScreen (
+ lvid->buffer + rects->x + (rects->y * lvid->rowbytes),
+ VGA_pagebase + rects->x + (rects->y * VGA_rowbytes),
+ rects->width,
+ rects->height,
+ lvid->rowbytes,
+ VGA_rowbytes);
+
+ rects = rects->pnext;
+ }
+ }
+}
+
+
+/*
+================
+VGA_SwapBuffers
+================
+*/
+void VGA_SwapBuffers (viddef_t *lvid, vmode_t *pcurrentmode, vrect_t *rects)
+{
+ UNUSED(lvid);
+
+ if (vid_wait.value == VID_WAIT_VSYNC)
+ VGA_WaitVsync ();
+
+ VGA_SwapBuffersCopy (lvid, pcurrentmode, rects);
+}
+