1 files changed, 88 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/d_fill.c b/apps/plugins/sdl/progs/quake/d_fill.c
new file mode 100644
index 0000000000..e6c14733b4
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/d_fill.c
@@ -0,0 +1,88 @@
+/*
+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_clear: clears a specified rectangle to the specified color
+
+#include "quakedef.h"
+
+
+/*
+================
+D_FillRect
+================
+*/
+void D_FillRect (vrect_t *rect, int color)
+{
+        int                             rx, ry, rwidth, rheight;
+        unsigned char   *dest;
+        unsigned                *ldest;
+
+        rx = rect->x;
+        ry = rect->y;
+        rwidth = rect->width;
+        rheight = rect->height;
+
+        if (rx < 0)
+        {
+                rwidth += rx;
+                rx = 0;
+        }
+        if (ry < 0)
+        {
+                rheight += ry;
+                ry = 0;
+        }
+        if (rx+rwidth > vid.width)
+                rwidth = vid.width - rx;
+        if (ry+rheight > vid.height)
+                rheight = vid.height - rx;
+                
+        if (rwidth < 1 || rheight < 1)
+                return;
+
+        dest = ((byte *)vid.buffer + ry*vid.rowbytes + rx);
+
+        if (((rwidth & 0x03) == 0) && (((long)dest & 0x03) == 0))
+        {
+        // faster aligned dword clear
+                ldest = (unsigned *)dest;
+                color += color << 16;
+
+                rwidth >>= 2;
+                color += color << 8;
+
+                for (ry=0 ; ry<rheight ; ry++)
+                {
+                        for (rx=0 ; rx<rwidth ; rx++)
+                                ldest[rx] = color;
+                        ldest = (unsigned *)((byte*)ldest + vid.rowbytes);
+                }
+        }
+        else
+        {
+        // slower byte-by-byte clear for unaligned cases
+                for (ry=0 ; ry<rheight ; ry++)
+                {
+                        for (rx=0 ; rx<rwidth ; rx++)
+                                dest[rx] = color;
+                        dest += vid.rowbytes;
+                }
+        }
+}
+