1 files changed, 107 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/d_modech.c b/apps/plugins/sdl/progs/quake/d_modech.c
new file mode 100644
index 0000000000..75c188e362
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/d_modech.c
@@ -0,0 +1,107 @@
+/*
+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.
+
+*/
+// d_modech.c: called when mode has just changed
+
+#include "quakedef.h"
+#include "d_local.h"
+
+int     d_vrectx, d_vrecty, d_vrectright_particle, d_vrectbottom_particle;
+
+int     d_y_aspect_shift, d_pix_min, d_pix_max, d_pix_shift;
+
+int             d_scantable[MAXHEIGHT];
+short   *zspantable[MAXHEIGHT]; 
+
+/*
+================
+D_Patch
+================
+*/
+void D_Patch (void)
+{
+#if id386
+
+        static qboolean protectset8 = false;
+
+        if (!protectset8)
+        {
+                Sys_MakeCodeWriteable ((int)D_PolysetAff8Start,
+                                                     (int)D_PolysetAff8End - (int)D_PolysetAff8Start);
+                protectset8 = true;
+        }
+
+#endif  // id386
+}
+
+
+/*
+================
+D_ViewChanged
+================
+*/
+void D_ViewChanged (void)
+{
+        int rowbytes;
+
+        if (r_dowarp)
+                rowbytes = WARP_WIDTH;
+        else
+                rowbytes = vid.rowbytes;
+
+        scale_for_mip = xscale;
+        if (yscale > xscale)
+                scale_for_mip = yscale;
+
+        d_zrowbytes = vid.width * 2;
+        d_zwidth = vid.width;
+
+        d_pix_min = r_refdef.vrect.width / 320;
+        if (d_pix_min < 1)
+                d_pix_min = 1;
+
+        d_pix_max = (int)((float)r_refdef.vrect.width / (320.0 / 4.0) + 0.5);
+        d_pix_shift = 8 - (int)((float)r_refdef.vrect.width / 320.0 + 0.5);
+        if (d_pix_max < 1)
+                d_pix_max = 1;
+
+        if (pixelAspect > 1.4)
+                d_y_aspect_shift = 1;
+        else
+                d_y_aspect_shift = 0;
+
+        d_vrectx = r_refdef.vrect.x;
+        d_vrecty = r_refdef.vrect.y;
+        d_vrectright_particle = r_refdef.vrectright - d_pix_max;
+        d_vrectbottom_particle =
+                        r_refdef.vrectbottom - (d_pix_max << d_y_aspect_shift);
+
+        {
+                int             i;
+
+                for (i=0 ; i<vid.height; i++)
+                {
+                        d_scantable[i] = i*rowbytes;
+                        zspantable[i] = d_pzbuffer + i*d_zwidth;
+                }
+        }
+
+        D_Patch ();
+}
+