From cc27365d775632647a1d07d78203421d27e8cd1c Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 12 Feb 2002 03:24:06 +0000
Subject: [PATCH] Daniel Borca's GLUT for DOS/DGJPP.

---
 src/glut/dos/Makefile.DJ      |  81 +++++
 src/glut/dos/PC_HW/pc_hw.c    | 141 ++++++++
 src/glut/dos/PC_HW/pc_hw.h    | 227 +++++++++++++
 src/glut/dos/PC_HW/pc_irq.S   | 180 ++++++++++
 src/glut/dos/PC_HW/pc_keyb.c  | 532 ++++++++++++++++++++++++++++++
 src/glut/dos/PC_HW/pc_mouse.c | 243 ++++++++++++++
 src/glut/dos/PC_HW/pc_timer.c | 158 +++++++++
 src/glut/dos/callback.c       | 152 +++++++++
 src/glut/dos/color.c          |  46 +++
 src/glut/dos/depend           |  18 +
 src/glut/dos/font.c           |  52 +++
 src/glut/dos/globals.c        |  61 ++++
 src/glut/dos/init.c           | 168 ++++++++++
 src/glut/dos/internal.h       |  76 +++++
 src/glut/dos/menu.c           |  86 +++++
 src/glut/dos/models.c         | 598 ++++++++++++++++++++++++++++++++++
 src/glut/dos/overlay.c        |  60 ++++
 src/glut/dos/state.c          |  47 +++
 src/glut/dos/teapot.c         | 212 ++++++++++++
 src/glut/dos/window.c         | 160 +++++++++
 20 files changed, 3298 insertions(+)
 create mode 100644 src/glut/dos/Makefile.DJ
 create mode 100644 src/glut/dos/PC_HW/pc_hw.c
 create mode 100644 src/glut/dos/PC_HW/pc_hw.h
 create mode 100644 src/glut/dos/PC_HW/pc_irq.S
 create mode 100644 src/glut/dos/PC_HW/pc_keyb.c
 create mode 100644 src/glut/dos/PC_HW/pc_mouse.c
 create mode 100644 src/glut/dos/PC_HW/pc_timer.c
 create mode 100644 src/glut/dos/callback.c
 create mode 100644 src/glut/dos/color.c
 create mode 100644 src/glut/dos/depend
 create mode 100644 src/glut/dos/font.c
 create mode 100644 src/glut/dos/globals.c
 create mode 100644 src/glut/dos/init.c
 create mode 100644 src/glut/dos/internal.h
 create mode 100644 src/glut/dos/menu.c
 create mode 100644 src/glut/dos/models.c
 create mode 100644 src/glut/dos/overlay.c
 create mode 100644 src/glut/dos/state.c
 create mode 100644 src/glut/dos/teapot.c
 create mode 100644 src/glut/dos/window.c

diff --git a/src/glut/dos/Makefile.DJ b/src/glut/dos/Makefile.DJ
new file mode 100644
index 00000000000..a8d176cbf4a
--- /dev/null
+++ b/src/glut/dos/Makefile.DJ
@@ -0,0 +1,81 @@
+# Mesa 3-D graphics library
+# Version:  4.0
+# 
+# Copyright (C) 1999  Brian Paul   All Rights Reserved.
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+# DOS/DJGPP glut makefile v0.1 for Mesa 4.0
+#
+#  Copyright (C) 2002 - Borca Daniel
+#  Email : dborca@yahoo.com
+#  Web   : http://www.geocities.com/dborca
+
+
+.PHONY: all clean
+
+TOP = ..
+CC = gcc
+CFLAGS = -I$(TOP)/include -Wall -W -Wno-unused -mcpu=pentium -ffast-math -O2
+AR = ar
+ARFLAGS = ruv
+LIBDIR = $(TOP)/lib
+
+GLUT_LIB = libglut.a
+
+CORE_SOURCES = \
+	callback.c \
+	color.c \
+	font.c \
+	globals.c \
+	init.c \
+	menu.c \
+	models.c \
+	overlay.c \
+	state.c \
+	teapot.c \
+	window.c
+
+PC_HW_OBJECTS = \
+	PC_HW/pc_hw.o \
+	PC_HW/pc_keyb.o \
+	PC_HW/pc_mouse.o \
+	PC_HW/pc_timer.o \
+	PC_HW/pc_irq.o
+
+SOURCES = $(CORE_SOURCES)
+
+OBJECTS = $(SOURCES:.c=.o) $(PC_HW_OBJECTS)
+
+.S.o:
+	gcc -o $@ -c $(CFLAGS) $<
+.s.o:
+	gcc -o $@ -c $(CFLAGS) $(<:.s=.S)
+.c.o:
+	gcc -o $@ -c $(CFLAGS) $<
+
+all: $(LIBDIR)/$(GLUT_LIB)
+
+$(LIBDIR)/$(GLUT_LIB): $(OBJECTS)
+	$(AR) $(ARFLAGS) $(LIBDIR)/$(GLUT_LIB) $(OBJECTS)
+
+clean:
+	-$(RM) *.o
+	-$(RM) PC_HW\*.o
+
+include depend
diff --git a/src/glut/dos/PC_HW/pc_hw.c b/src/glut/dos/PC_HW/pc_hw.c
new file mode 100644
index 00000000000..d6ffd5650f5
--- /dev/null
+++ b/src/glut/dos/PC_HW/pc_hw.c
@@ -0,0 +1,141 @@
+/*
+ * PC/HW routine collection v0.1 for DOS/DJGPP
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <dpmi.h>
+#include <fcntl.h>
+#include <sys/stat.h> /* for mode definitions */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pc_hw.h"
+
+/*
+ * atexit
+ */
+#define MAX_ATEXIT 32
+
+static volatile int atexitcnt;
+static VFUNC atexittbl[MAX_ATEXIT];
+
+static void __attribute__((destructor)) doexit (void)
+{
+ while (atexitcnt) atexittbl[--atexitcnt]();
+}
+
+int pc_clexit (VFUNC f)
+{
+ int i;
+
+ for (i=0;i<atexitcnt;i++) {
+     if (atexittbl[i]==f) {
+        for (atexitcnt--;i<atexitcnt;i++) atexittbl[i] = atexittbl[i+1];
+        atexittbl[i] = 0;
+        return 0;
+     }
+ }
+ return -1;
+}
+
+int pc_atexit (VFUNC f)
+{
+ pc_clexit(f);
+ if (atexitcnt<MAX_ATEXIT) {
+    atexittbl[atexitcnt++] = f;
+    return 0;
+ }
+ return -1;
+}
+
+/*
+ * locked memory allocation
+ */
+void *pc_malloc (size_t size)
+{
+ void *p = malloc(size);
+
+ if (p) {
+    if (_go32_dpmi_lock_data(p, size)) {
+       free(p);
+       return NULL;
+    }
+ }
+
+ return p;
+}
+
+/*
+ * standard redirection
+ */
+static char errname[L_tmpnam];
+static char outname[L_tmpnam];
+
+static int h_out, h_outbak;
+static int h_err, h_errbak;
+
+void pc_open_stderr (void)
+{
+ if (tmpnam(errname)) {
+    h_err = open(errname, O_WRONLY |/* O_BINARY |*/ O_CREAT | O_TRUNC,
+                          S_IREAD | S_IWRITE);
+    h_errbak = dup(2);
+    fflush(stderr);
+    dup2(h_err, 2);
+ }
+}
+
+void pc_close_stderr (void)
+{
+ FILE *f;
+ char *line = alloca(512);
+ 
+ dup2(h_errbak, 2);
+ close(h_err);
+ close(h_errbak);
+ 
+ if ((f=fopen(errname, "r"))!=NULL) {
+    while (fgets(line, 512, f)) {
+          fputs(line, stderr);
+    }
+    fclose(f);
+ }
+
+ remove(errname);
+}
+
+void pc_open_stdout (void)
+{
+ if (tmpnam(outname)) {
+    h_out = open(outname, O_WRONLY |/* O_BINARY |*/ O_CREAT | O_TRUNC,
+                          S_IREAD | S_IWRITE);
+    h_outbak = dup(1);
+    fflush(stdout);
+    dup2(h_out, 1);
+ }
+}
+
+void pc_close_stdout (void)
+{
+ FILE *f;
+ char *line = alloca(512);
+ 
+ dup2(h_outbak, 1);
+ close(h_out);
+ close(h_outbak);
+ 
+ if ((f=fopen(outname, "r"))!=NULL) {
+    while (fgets(line, 512, f)) {
+          fputs(line, stdout);
+    }
+    fclose(f);
+ }
+
+ remove(outname);
+}
diff --git a/src/glut/dos/PC_HW/pc_hw.h b/src/glut/dos/PC_HW/pc_hw.h
new file mode 100644
index 00000000000..09fe8051bb4
--- /dev/null
+++ b/src/glut/dos/PC_HW/pc_hw.h
@@ -0,0 +1,227 @@
+/*
+ * PC/HW routine collection v0.1 for DOS/DJGPP
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef PC_HW_H_included
+#define PC_HW_H_included
+
+#include <dpmi.h>
+#include <stdlib.h>
+
+/*
+ * misc C definitions
+ */
+#define FALSE 0
+#define TRUE !FALSE
+
+#define MIN(x,y)     (((x) < (y)) ? (x) : (y))
+#define MAX(x,y)     (((x) > (y)) ? (x) : (y))
+#define MID(x,y,z)   MAX((x), MIN((y), (z)))
+
+typedef void (*VFUNC) (void);
+typedef void (*PFUNC) (void *);
+typedef void (*MFUNC) (int x, int y, int b);
+
+/*
+ * atexit
+ */
+int pc_atexit (VFUNC f);
+int pc_clexit (VFUNC f);
+
+/*
+ * locked memory
+ */
+#define ENDOFUNC(x)    static void x##_end() { }
+#define LOCKFUNC(x)    _go32_dpmi_lock_code((void *)x, (long)x##_end - (long)x)
+#define LOCKDATA(x)    _go32_dpmi_lock_data((void *)&x, sizeof(x))
+
+void *pc_malloc (size_t size);
+
+/*
+ * IRQ
+ */
+#define ENABLE()  __asm__ __volatile__ ("sti")
+#define DISABLE() __asm__ __volatile__ ("cli")
+
+extern int pc_install_irq (int i, int (*handler) ());
+extern int pc_remove_irq (int i);
+
+/*
+ * keyboard
+ */
+#define KB_SHIFT_FLAG         0x0001
+#define KB_CTRL_FLAG          0x0002
+#define KB_ALT_FLAG           0x0004
+#define KB_LWIN_FLAG          0x0008
+#define KB_RWIN_FLAG          0x0010
+#define KB_MENU_FLAG          0x0020
+#define KB_SCROLOCK_FLAG      0x0100
+#define KB_NUMLOCK_FLAG       0x0200
+#define KB_CAPSLOCK_FLAG      0x0400
+#define KB_INALTSEQ_FLAG      0x0800
+#define KB_ACCENT1_FLAG       0x1000
+#define KB_ACCENT2_FLAG       0x2000
+#define KB_ACCENT3_FLAG       0x4000
+#define KB_ACCENT4_FLAG       0x8000
+
+#define KEY_A                 1
+#define KEY_B                 2
+#define KEY_C                 3
+#define KEY_D                 4
+#define KEY_E                 5
+#define KEY_F                 6
+#define KEY_G                 7
+#define KEY_H                 8
+#define KEY_I                 9
+#define KEY_J                 10
+#define KEY_K                 11
+#define KEY_L                 12
+#define KEY_M                 13
+#define KEY_N                 14
+#define KEY_O                 15
+#define KEY_P                 16
+#define KEY_Q                 17
+#define KEY_R                 18
+#define KEY_S                 19
+#define KEY_T                 20
+#define KEY_U                 21
+#define KEY_V                 22
+#define KEY_W                 23
+#define KEY_X                 24
+#define KEY_Y                 25
+#define KEY_Z                 26
+#define KEY_0                 27
+#define KEY_1                 28
+#define KEY_2                 29
+#define KEY_3                 30
+#define KEY_4                 31
+#define KEY_5                 32
+#define KEY_6                 33
+#define KEY_7                 34
+#define KEY_8                 35
+#define KEY_9                 36
+#define KEY_0_PAD             37
+#define KEY_1_PAD             38
+#define KEY_2_PAD             39
+#define KEY_3_PAD             40
+#define KEY_4_PAD             41
+#define KEY_5_PAD             42
+#define KEY_6_PAD             43
+#define KEY_7_PAD             44
+#define KEY_8_PAD             45
+#define KEY_9_PAD             46
+#define KEY_F1                47
+#define KEY_F2                48
+#define KEY_F3                49
+#define KEY_F4                50
+#define KEY_F5                51
+#define KEY_F6                52
+#define KEY_F7                53
+#define KEY_F8                54
+#define KEY_F9                55
+#define KEY_F10               56
+#define KEY_F11               57
+#define KEY_F12               58
+#define KEY_ESC               59
+#define KEY_TILDE             60
+#define KEY_MINUS             61
+#define KEY_EQUALS            62
+#define KEY_BACKSPACE         63
+#define KEY_TAB               64
+#define KEY_OPENBRACE         65
+#define KEY_CLOSEBRACE        66
+#define KEY_ENTER             67
+#define KEY_COLON             68
+#define KEY_QUOTE             69
+#define KEY_BACKSLASH         70
+#define KEY_BACKSLASH2        71
+#define KEY_COMMA             72
+#define KEY_STOP              73
+#define KEY_SLASH             74
+#define KEY_SPACE             75
+#define KEY_INSERT            76
+#define KEY_DEL               77
+#define KEY_HOME              78
+#define KEY_END               79
+#define KEY_PGUP              80
+#define KEY_PGDN              81
+#define KEY_LEFT              82
+#define KEY_RIGHT             83
+#define KEY_UP                84
+#define KEY_DOWN              85
+#define KEY_SLASH_PAD         86
+#define KEY_ASTERISK          87
+#define KEY_MINUS_PAD         88
+#define KEY_PLUS_PAD          89
+#define KEY_DEL_PAD           90
+#define KEY_ENTER_PAD         91
+#define KEY_PRTSCR            92
+#define KEY_PAUSE             93
+#define KEY_ABNT_C1           94
+#define KEY_YEN               95
+#define KEY_KANA              96
+#define KEY_CONVERT           97
+#define KEY_NOCONVERT         98
+#define KEY_AT                99
+#define KEY_CIRCUMFLEX        100
+#define KEY_COLON2            101
+#define KEY_KANJI             102
+
+#define KEY_MODIFIERS         103
+
+#define KEY_LSHIFT            103
+#define KEY_RSHIFT            104
+#define KEY_LCONTROL          105
+#define KEY_RCONTROL          106
+#define KEY_ALT               107
+#define KEY_ALTGR             108
+#define KEY_LWIN              109
+#define KEY_RWIN              110
+#define KEY_MENU              111
+#define KEY_SCRLOCK           112
+#define KEY_NUMLOCK           113
+#define KEY_CAPSLOCK          114
+
+#define KEY_MAX               115
+
+extern volatile char pc_key[KEY_MAX];
+
+int pc_install_keyb (void);
+void pc_remove_keyb (void);
+int pc_keypressed (void);
+int pc_readkey (void);
+
+/*
+ * timer
+ */
+int pc_install_int (PFUNC func, void *parm, unsigned int freq);
+void pc_remove_timer (void);
+
+/*
+ * mouse
+ */
+extern volatile int pc_mouse_x, pc_mouse_y, pc_mouse_b;
+
+int pc_install_mouse (void);
+void pc_remove_mouse (void);
+MFUNC pc_install_mouse_handler (MFUNC handler);
+void pc_mouse_area (int x1, int y1, int x2, int y2);
+void pc_mouse_speed (int xspeed, int yspeed);
+void pc_show_mouse (void);
+void pc_scare_mouse (void);
+void pc_unscare_mouse (void);
+
+/*
+ * standard redirection
+ */
+void pc_open_stdout (void);
+void pc_open_stderr (void);
+void pc_close_stdout (void);
+void pc_close_stderr (void);
+
+#endif
diff --git a/src/glut/dos/PC_HW/pc_irq.S b/src/glut/dos/PC_HW/pc_irq.S
new file mode 100644
index 00000000000..2a6302f71a2
--- /dev/null
+++ b/src/glut/dos/PC_HW/pc_irq.S
@@ -0,0 +1,180 @@
+/*
+ * PC/HW routine collection v0.1 for DOS/DJGPP
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+		.file	"pc_irq.S"
+
+		.text
+
+#define	IRQ_STACK_SIZE	16384
+
+#define	IRQ_WRAPPER_LEN	(__irq_wrapper_1-__irq_wrapper_0)
+#define	IRQ_OLD		(__irq_old_0-__irq_wrapper_0)
+#define	IRQ_HOOK	(__irq_hook_0-__irq_wrapper_0)
+#define	IRQ_STACK	(__irq_stack_0-__irq_wrapper_0)
+
+		.balign	4
+common:
+		movw	$0x0400, %ax
+		int	$0x31
+
+		movl	%ss:8(%ebp), %ebx
+		cmpl	$15, %ebx
+		jbe	0f
+	fail:
+		orl	$-1, %eax
+		popl	%edi
+		popl	%ebx
+		leave
+		ret
+
+	0:
+		movl	%ebx, %edi
+		imull	$IRQ_WRAPPER_LEN, %edi
+		addl	$__irq_wrapper_0, %edi
+
+		cmpb	$7, %bl
+		jbe	1f
+		movb	%dl, %dh
+		subb	$8, %dh
+	1:
+		addb	%dh, %bl
+		ret
+
+		.balign	4
+		.global	_pc_install_irq
+_pc_install_irq:
+		pushl	%ebp
+		movl	%esp, %ebp
+		pushl	%ebx
+		pushl	%edi
+
+		call	common
+
+		cmpl	$0, IRQ_HOOK(%edi)
+		jne	fail
+
+		pushl	$IRQ_WRAPPER_LEN
+		pushl	%edi
+		call	__go32_dpmi_lock_code
+		addl	$8, %esp
+		testl	%eax, %eax
+		jnz	fail
+
+		pushl	$IRQ_STACK_SIZE
+		call	_pc_malloc
+		popl	%edx
+		testl	%eax, %eax
+		jz	fail
+		addl	%edx, %eax
+		movl	%eax, IRQ_STACK(%edi)
+
+		movl	%ss:12(%ebp), %eax
+		movl	%eax, IRQ_HOOK(%edi)
+
+		movw	$0x0204, %ax
+		int	$0x31
+		movl	%edx, IRQ_OLD(%edi)
+		movw	%cx, IRQ_OLD+4(%edi)
+		movw	$0x0205, %ax
+		movl	%edi, %edx
+		movl	%cs, %ecx
+		int	$0x31
+
+	done:
+		xorl	%eax, %eax
+		popl	%edi
+		popl	%ebx
+		leave
+		ret
+
+		.balign	4
+		.global	_pc_remove_irq
+_pc_remove_irq:
+		pushl	%ebp
+		movl	%esp, %ebp
+		pushl	%ebx
+		pushl	%edi
+
+		call	common
+
+		cmpl	$0, IRQ_HOOK(%edi)
+		je	fail
+
+		movl	$0, IRQ_HOOK(%edi)
+
+		movw	$0x0205, %ax
+		movl	IRQ_OLD(%edi), %edx
+		movl	IRQ_OLD+4(%edi), %ecx
+		int	$0x31
+
+		movl	IRQ_STACK(%edi), %eax
+		subl	$IRQ_STACK_SIZE, %eax
+		pushl	%eax
+		call	_free
+		popl	%eax
+
+		jmp	done
+
+#define	WRAPPER(x)							   ; \
+		.balign	4						   ; \
+__irq_wrapper_##x:							   ; \
+		pushal							   ; \
+		pushl	%ds						   ; \
+		pushl	%es						   ; \
+		pushl	%fs						   ; \
+		pushl	%gs						   ; \
+		movw	%ss, %bx					   ; \
+		movl	%esp, %esi					   ; \
+		movl	%cs:___djgpp_ds_alias, %ss			   ; \
+		movl	%cs:__irq_stack_##x, %esp			   ; \
+		pushl	%ss						   ; \
+		pushl	%ss						   ; \
+		popl	%es						   ; \
+		popl	%ds						   ; \
+		movl	___djgpp_dos_sel, %fs				   ; \
+		pushl	%fs						   ; \
+		popl	%gs						   ; \
+		call	*__irq_hook_##x					   ; \
+		movw	%bx, %ss					   ; \
+		movl	%esi, %esp					   ; \
+		testl	%eax, %eax					   ; \
+		popl	%gs						   ; \
+		popl	%fs						   ; \
+		popl	%es						   ; \
+		popl	%ds						   ; \
+		popal							   ; \
+		jz	__irq_ignore_##x				   ; \
+__irq_bypass_##x:							   ; \
+		ljmp	*%cs:__irq_old_##x				   ; \
+__irq_ignore_##x:							   ; \
+		iret							   ; \
+		.balign	4						   ; \
+__irq_old_##x:								   ; \
+		.long	0, 0						   ; \
+__irq_hook_##x:								   ; \
+		.long	0						   ; \
+__irq_stack_##x:							   ; \
+		.long	0
+
+		WRAPPER(0);
+		WRAPPER(1);
+		WRAPPER(2);
+		WRAPPER(3);
+		WRAPPER(4);
+		WRAPPER(5);
+		WRAPPER(6);
+		WRAPPER(7);
+		WRAPPER(8);
+		WRAPPER(9);
+		WRAPPER(10);
+		WRAPPER(11);
+		WRAPPER(12);
+		WRAPPER(13);
+		WRAPPER(14);
+		WRAPPER(15);
diff --git a/src/glut/dos/PC_HW/pc_keyb.c b/src/glut/dos/PC_HW/pc_keyb.c
new file mode 100644
index 00000000000..f5f4bd8e764
--- /dev/null
+++ b/src/glut/dos/PC_HW/pc_keyb.c
@@ -0,0 +1,532 @@
+/*
+ * PC/HW routine collection v0.1 for DOS/DJGPP
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <pc.h>
+#include <sys/exceptn.h>
+#include <sys/farptr.h>
+
+#include "pc_hw.h"
+
+
+
+#define KEYB_IRQ 1
+
+#define KEY_BUFFER_SIZE 64
+
+#define KB_MODIFIERS (KB_SHIFT_FLAG | KB_CTRL_FLAG | KB_ALT_FLAG | KB_LWIN_FLAG | KB_RWIN_FLAG | KB_MENU_FLAG)
+#define KB_LED_FLAGS (KB_SCROLOCK_FLAG | KB_NUMLOCK_FLAG | KB_CAPSLOCK_FLAG)
+
+static int keyboard_installed;
+
+static volatile struct {
+       volatile int start, end;
+       volatile int key[KEY_BUFFER_SIZE];
+} key_buffer;
+
+static volatile int key_enhanced, key_pause_loop, key_shifts;
+static int leds_ok = TRUE;
+static int in_a_terrupt = FALSE;
+volatile char pc_key[KEY_MAX];
+
+
+
+/* convert Allegro format scancodes into key_shifts flag bits */
+static unsigned short modifier_table[KEY_MAX - KEY_MODIFIERS] =
+{
+   KB_SHIFT_FLAG,    KB_SHIFT_FLAG,    KB_CTRL_FLAG,
+   KB_CTRL_FLAG,     KB_ALT_FLAG,      KB_ALT_FLAG,
+   KB_LWIN_FLAG,     KB_RWIN_FLAG,     KB_MENU_FLAG,
+   KB_SCROLOCK_FLAG, KB_NUMLOCK_FLAG,  KB_CAPSLOCK_FLAG
+};
+
+
+
+/* lookup table for converting hardware scancodes into Allegro format */
+static unsigned char hw_to_mycode[128] =
+{
+   /* 0x00 */  0,              KEY_ESC,        KEY_1,          KEY_2, 
+   /* 0x04 */  KEY_3,          KEY_4,          KEY_5,          KEY_6,
+   /* 0x08 */  KEY_7,          KEY_8,          KEY_9,          KEY_0, 
+   /* 0x0C */  KEY_MINUS,      KEY_EQUALS,     KEY_BACKSPACE,  KEY_TAB,
+   /* 0x10 */  KEY_Q,          KEY_W,          KEY_E,          KEY_R, 
+   /* 0x14 */  KEY_T,          KEY_Y,          KEY_U,          KEY_I,
+   /* 0x18 */  KEY_O,          KEY_P,          KEY_OPENBRACE,  KEY_CLOSEBRACE, 
+   /* 0x1C */  KEY_ENTER,      KEY_LCONTROL,   KEY_A,          KEY_S,
+   /* 0x20 */  KEY_D,          KEY_F,          KEY_G,          KEY_H, 
+   /* 0x24 */  KEY_J,          KEY_K,          KEY_L,          KEY_COLON,
+   /* 0x28 */  KEY_QUOTE,      KEY_TILDE,      KEY_LSHIFT,     KEY_BACKSLASH, 
+   /* 0x2C */  KEY_Z,          KEY_X,          KEY_C,          KEY_V,
+   /* 0x30 */  KEY_B,          KEY_N,          KEY_M,          KEY_COMMA, 
+   /* 0x34 */  KEY_STOP,       KEY_SLASH,      KEY_RSHIFT,     KEY_ASTERISK,
+   /* 0x38 */  KEY_ALT,        KEY_SPACE,      KEY_CAPSLOCK,   KEY_F1, 
+   /* 0x3C */  KEY_F2,         KEY_F3,         KEY_F4,         KEY_F5,
+   /* 0x40 */  KEY_F6,         KEY_F7,         KEY_F8,         KEY_F9, 
+   /* 0x44 */  KEY_F10,        KEY_NUMLOCK,    KEY_SCRLOCK,    KEY_7_PAD,
+   /* 0x48 */  KEY_8_PAD,      KEY_9_PAD,      KEY_MINUS_PAD,  KEY_4_PAD, 
+   /* 0x4C */  KEY_5_PAD,      KEY_6_PAD,      KEY_PLUS_PAD,   KEY_1_PAD,
+   /* 0x50 */  KEY_2_PAD,      KEY_3_PAD,      KEY_0_PAD,      KEY_DEL_PAD, 
+   /* 0x54 */  KEY_PRTSCR,     0,              KEY_BACKSLASH2, KEY_F11,
+   /* 0x58 */  KEY_F12,        0,              0,              KEY_LWIN, 
+   /* 0x5C */  KEY_RWIN,       KEY_MENU,       0,              0,
+   /* 0x60 */  0,              0,              0,              0, 
+   /* 0x64 */  0,              0,              0,              0,
+   /* 0x68 */  0,              0,              0,              0, 
+   /* 0x6C */  0,              0,              0,              0,
+   /* 0x70 */  KEY_KANA,       0,              0,              KEY_ABNT_C1, 
+   /* 0x74 */  0,              0,              0,              0,
+   /* 0x78 */  0,              KEY_CONVERT,    0,              KEY_NOCONVERT, 
+   /* 0x7C */  0,              KEY_YEN,       0,              0
+};
+
+
+
+/* lookup table for converting extended hardware codes into Allegro format */
+static unsigned char hw_to_mycode_ex[128] =
+{
+   /* 0x00 */  0,              KEY_ESC,        KEY_1,          KEY_2,
+   /* 0x04 */  KEY_3,          KEY_4,          KEY_5,          KEY_6,
+   /* 0x08 */  KEY_7,          KEY_8,          KEY_9,          KEY_0,
+   /* 0x0C */  KEY_MINUS,      KEY_EQUALS,     KEY_BACKSPACE,  KEY_TAB,
+   /* 0x10 */  KEY_CIRCUMFLEX, KEY_AT,         KEY_COLON2,     KEY_R,
+   /* 0x14 */  KEY_KANJI,      KEY_Y,          KEY_U,          KEY_I,
+   /* 0x18 */  KEY_O,          KEY_P,          KEY_OPENBRACE,  KEY_CLOSEBRACE,
+   /* 0x1C */  KEY_ENTER_PAD,  KEY_RCONTROL,   KEY_A,          KEY_S,
+   /* 0x20 */  KEY_D,          KEY_F,          KEY_G,          KEY_H,
+   /* 0x24 */  KEY_J,          KEY_K,          KEY_L,          KEY_COLON,
+   /* 0x28 */  KEY_QUOTE,      KEY_TILDE,      0,              KEY_BACKSLASH,
+   /* 0x2C */  KEY_Z,          KEY_X,          KEY_C,          KEY_V,
+   /* 0x30 */  KEY_B,          KEY_N,          KEY_M,          KEY_COMMA,
+   /* 0x34 */  KEY_STOP,       KEY_SLASH_PAD,  0,              KEY_PRTSCR,
+   /* 0x38 */  KEY_ALTGR,      KEY_SPACE,      KEY_CAPSLOCK,   KEY_F1,
+   /* 0x3C */  KEY_F2,         KEY_F3,         KEY_F4,         KEY_F5,
+   /* 0x40 */  KEY_F6,         KEY_F7,         KEY_F8,         KEY_F9,
+   /* 0x44 */  KEY_F10,        KEY_NUMLOCK,    KEY_PAUSE,      KEY_HOME,
+   /* 0x48 */  KEY_UP,         KEY_PGUP,       KEY_MINUS_PAD,  KEY_LEFT,
+   /* 0x4C */  KEY_5_PAD,      KEY_RIGHT,      KEY_PLUS_PAD,   KEY_END,
+   /* 0x50 */  KEY_DOWN,       KEY_PGDN,       KEY_INSERT,     KEY_DEL,
+   /* 0x54 */  KEY_PRTSCR,     0,              KEY_BACKSLASH2, KEY_F11,
+   /* 0x58 */  KEY_F12,        0,              0,              KEY_LWIN,
+   /* 0x5C */  KEY_RWIN,       KEY_MENU,       0,              0,
+   /* 0x60 */  0,              0,              0,              0,
+   /* 0x64 */  0,              0,              0,              0,
+   /* 0x68 */  0,              0,              0,              0,
+   /* 0x6C */  0,              0,              0,              0,
+   /* 0x70 */  0,              0,              0,              0,
+   /* 0x74 */  0,              0,              0,              0,
+   /* 0x78 */  0,              0,              0,              0,
+   /* 0x7C */  0,              0,              0,              0
+};
+
+
+
+/* default mapping table for the US keyboard layout */
+static unsigned short standard_key_ascii_table[KEY_MAX] =
+{
+   /* start */       0,
+   /* alphabet */    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+   /* numbers */     '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+   /* numpad */      '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+   /* func keys */   0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* misc chars */  27, '`', '-', '=', 8, 9, '[', ']', 13, ';', '\'', '\\', '\\', ',', '.', '/', ' ',
+   /* controls */    0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* numpad */      '/', '*', '-', '+', '.', 13,
+   /* modifiers */   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+
+
+/* capslock mapping table for the US keyboard layout */
+static unsigned short standard_key_capslock_table[KEY_MAX] =
+{
+   /* start */       0,
+   /* alphabet */    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+   /* numbers */     '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+   /* numpad */      '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+   /* func keys */   0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* misc chars */  27, '`', '-', '=', 8, 9, '[', ']', 13, ';', '\'', '\\', '\\', ',', '.', '/', ' ',
+   /* controls */    0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* numpad */      '/', '*', '-', '+', '.', 13,
+   /* modifiers */   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+
+
+/* shifted mapping table for the US keyboard layout */
+static unsigned short standard_key_shift_table[KEY_MAX] =
+{
+   /* start */       0,
+   /* alphabet */    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+   /* numbers */     ')', '!', '@', '#', '$', '%', '^', '&', '*', '(',
+   /* numpad */      '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+   /* func keys */   0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* misc chars */  27, '~', '_', '+', 8, 9, '{', '}', 13, ':', '"', '|', '|', '<', '>', '?', ' ',
+   /* controls */    0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* numpad */      '/', '*', '-', '+', '.', 13,
+   /* modifiers */   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+
+
+/* ctrl+key mapping table for the US keyboard layout */
+static unsigned short standard_key_control_table[KEY_MAX] =
+{
+   /* start */       0,
+   /* alphabet */    1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
+   /* numbers */     2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+   /* numpad */      '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+   /* func keys */   0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* misc chars */  27, 2, 2, 2, 127, 127, 2, 2, 10, 2, 2, 2, 2, 2, 2, 2, 2,
+   /* controls */    0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+   /* numpad */      2, 2, 2, 2, 2, 10,
+   /* modifiers */   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+
+
+/* convert numeric pad scancodes into arrow codes */
+static unsigned char numlock_table[10] =
+{
+   KEY_INSERT, KEY_END,    KEY_DOWN,   KEY_PGDN,   KEY_LEFT,
+   KEY_5_PAD,  KEY_RIGHT,  KEY_HOME,   KEY_UP,     KEY_PGUP
+};
+
+
+
+/* kb_wait_for_write_ready:
+ *  Wait for the keyboard controller to set the ready-for-write bit.
+ */
+static __inline__ int kb_wait_for_write_ready (void)
+{
+ int timeout = 4096;
+
+ while ((timeout>0) && (inportb(0x64)&2)) timeout--;
+
+ return (timeout>0);
+}
+
+
+
+/* kb_wait_for_read_ready:
+ *  Wait for the keyboard controller to set the ready-for-read bit.
+ */
+static __inline__ int kb_wait_for_read_ready (void)
+{
+ int timeout = 16384;
+
+ while ((timeout>0) && (!(inportb(0x64)&1))) timeout--;
+
+ return (timeout>0);
+}
+
+
+
+/* kb_send_data:
+ *  Sends a byte to the keyboard controller. Returns 1 if all OK.
+ */
+static __inline__ int kb_send_data (unsigned char data)
+{
+ int resends = 4;
+ int timeout, temp;
+
+ do {
+     if (!kb_wait_for_write_ready())
+        return 0;
+
+     outportb(0x60, data);
+     timeout = 4096;
+
+     while (--timeout>0) {
+           if (!kb_wait_for_read_ready())
+	      return 0;
+
+           temp = inportb(0x60);
+
+           if (temp == 0xFA)
+	      return 1;
+
+           if (temp == 0xFE)
+	      break;
+     }
+ } while ((resends-- > 0) && (timeout > 0));
+
+ return 0;
+}
+
+
+
+static void update_leds (int leds)
+{
+ if (leds_ok) {
+    if (!in_a_terrupt)
+       DISABLE();
+
+    if (!kb_send_data(0xED)) {
+       kb_send_data(0xF4);
+       leds_ok = FALSE;
+    } else if (!kb_send_data((leds>>8)&7)) {
+       kb_send_data(0xF4);
+       leds_ok = FALSE;
+    }
+
+    if (!in_a_terrupt)
+       ENABLE();
+ }
+} ENDOFUNC(update_leds)
+
+
+
+static void inject_key (int scancode)
+{
+ unsigned short *table;
+
+ if ((scancode >= KEY_0_PAD) && (scancode <= KEY_9_PAD)) {
+    if (((key_shifts & KB_NUMLOCK_FLAG) != 0) == ((key_shifts & KB_SHIFT_FLAG) != 0)) {
+       scancode = numlock_table[scancode - KEY_0_PAD];
+    }
+    table = standard_key_ascii_table;
+ } else if (key_shifts & KB_CTRL_FLAG) {
+    table = standard_key_control_table;
+ } else if (key_shifts & KB_SHIFT_FLAG) {
+    if (key_shifts & KB_CAPSLOCK_FLAG) {
+       if (standard_key_ascii_table[scancode]==standard_key_capslock_table[scancode]) {
+          table = standard_key_shift_table;
+       } else {
+          table = standard_key_ascii_table;
+       }
+    } else {
+       table = standard_key_shift_table;
+    }
+ } else if (key_shifts & KB_CAPSLOCK_FLAG) {
+    table = standard_key_capslock_table;
+ } else {
+    table = standard_key_ascii_table;
+ }
+
+ key_buffer.key[key_buffer.end++] = (scancode<<16)|table[scancode];
+
+ if (key_buffer.end>=KEY_BUFFER_SIZE)
+    key_buffer.end = 0;
+ if (key_buffer.end==key_buffer.start) {
+    key_buffer.start++;
+    if (key_buffer.start>=KEY_BUFFER_SIZE)
+       key_buffer.start = 0;
+ }
+} ENDOFUNC(inject_key)
+
+static void handle_code (int scancode, int keycode)
+{
+ in_a_terrupt++;
+
+ if (keycode==0) {              /* pause */
+    inject_key(scancode);
+    pc_key[KEY_PAUSE] ^= TRUE;
+ } else if (scancode) {
+    int flag;
+ 
+    if (scancode>=KEY_MODIFIERS) {
+       flag = modifier_table[scancode - KEY_MODIFIERS];
+    } else {
+       flag = 0;
+    }
+    if ((char)keycode<0) {      /* release */
+       pc_key[scancode] = FALSE;
+       if (flag&KB_MODIFIERS) {
+          key_shifts &= ~flag;
+       }
+    } else {                    /* keypress */
+       pc_key[scancode] = TRUE;
+       if (flag&KB_MODIFIERS) {
+          key_shifts |= flag;
+       }
+       if (flag&KB_LED_FLAGS) {
+          key_shifts ^= flag;
+          update_leds(key_shifts);
+       }
+       if (scancode<KEY_MODIFIERS) {
+          inject_key(scancode);
+       }
+    }
+ }
+
+ in_a_terrupt--;
+} ENDOFUNC(handle_code)
+
+static __inline__ void satisfy (void)
+{
+ __asm__("\n\
+		inb	$0x61, %%al	\n\
+		movb	%%al, %%ah	\n\
+		orb	$0x80, %%al	\n\
+		outb	%%al, $0x61	\n\
+		xchgb	%%al, %%ah	\n\
+		outb	%%al, $0x61	\n\
+		movb	$0x20, %%al	\n\
+		outb	%%al, $0x20	\n\
+ ":::"%eax");
+}
+
+static int keyboard ()
+{
+ unsigned char temp, scancode;
+
+ temp = inportb(0x60);
+
+ if (temp<=0xe1) {
+    if (key_pause_loop) {
+       if (!--key_pause_loop) handle_code(KEY_PAUSE, 0);
+    } else
+       switch (temp) {
+              case 0xe0:
+                   key_enhanced = TRUE;
+                   break;
+              case 0xe1:
+                   key_pause_loop = 5;
+                   break;
+              default:
+                   if (key_enhanced) {
+                      key_enhanced = FALSE;
+                      scancode = hw_to_mycode_ex[temp&0x7f];
+                   } else {
+                      scancode = hw_to_mycode[temp&0x7f];
+                   }
+                   handle_code(scancode, temp);
+       }
+ }
+
+ if (((temp==0x4F)||(temp==0x53))&&(key_shifts&KB_CTRL_FLAG)&&(key_shifts&KB_ALT_FLAG)) {
+    __asm__("\n\
+		movb	$0x79, %%al		\n\
+		call	___djgpp_hw_exception	\n\
+    ":::"%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory");
+ }
+
+ satisfy();
+ return 0;
+} ENDOFUNC(keyboard)
+
+
+int pc_keypressed (void)
+{
+ return (key_buffer.start!=key_buffer.end);
+}
+
+int pc_readkey (void)
+{
+ if (keyboard_installed) {
+    int key;
+
+    do {
+    } while (key_buffer.start==key_buffer.end);
+
+    DISABLE();
+    key = key_buffer.key[key_buffer.start++];
+    if (key_buffer.start>=KEY_BUFFER_SIZE)
+       key_buffer.start = 0;
+    ENABLE();
+
+    return key;
+ } else {
+    return 0;
+ }
+}
+
+void pc_remove_keyb (void)
+{
+ if (keyboard_installed) {
+    int s1, s2, s3;
+ 
+    keyboard_installed = FALSE;
+    pc_clexit(pc_remove_keyb);
+
+    DISABLE();
+    _farsetsel(__djgpp_dos_sel);
+    _farnspokew(0x41c, _farnspeekw(0x41a));
+
+    s1 = _farnspeekb(0x417) & 0x80;
+    s2 = _farnspeekb(0x418) & 0xFC;
+    s3 = _farnspeekb(0x496) & 0xF3;
+
+    if (pc_key[KEY_RSHIFT])   { s1 |= 1; }
+    if (pc_key[KEY_LSHIFT])   { s1 |= 2; }
+    if (pc_key[KEY_LCONTROL]) { s2 |= 1; s1 |= 4; }
+    if (pc_key[KEY_ALT])      { s1 |= 8; s2 |= 2; }
+    if (pc_key[KEY_RCONTROL]) { s1 |= 4; s3 |= 4; }
+    if (pc_key[KEY_ALTGR])    { s1 |= 8; s3 |= 8; }
+
+    if (key_shifts&KB_SCROLOCK_FLAG) s1 |= 16;
+    if (key_shifts&KB_NUMLOCK_FLAG)  s1 |= 32;
+    if (key_shifts&KB_CAPSLOCK_FLAG) s1 |= 64;
+
+    _farnspokeb(0x417, s1);
+    _farnspokeb(0x418, s2);
+    _farnspokeb(0x496, s3);
+    update_leds(key_shifts);
+
+    ENABLE();
+    pc_remove_irq(KEYB_IRQ);
+ }
+}
+
+int pc_install_keyb (void)
+{
+ if (keyboard_installed||pc_install_irq(KEYB_IRQ, keyboard)) {
+    return -1;
+ } else {
+    int s1, s2, s3;
+
+    LOCKDATA(key_buffer);
+    LOCKDATA(key_enhanced);
+    LOCKDATA(key_pause_loop);
+    LOCKDATA(key_shifts);
+    LOCKDATA(leds_ok);
+    LOCKDATA(in_a_terrupt);
+    LOCKDATA(pc_key);
+    LOCKDATA(modifier_table);
+    LOCKDATA(hw_to_mycode);
+    LOCKDATA(hw_to_mycode_ex);
+    LOCKDATA(standard_key_ascii_table);
+    LOCKDATA(standard_key_capslock_table);
+    LOCKDATA(standard_key_shift_table);
+    LOCKDATA(standard_key_control_table);
+    LOCKDATA(numlock_table);
+    LOCKFUNC(update_leds);
+    LOCKFUNC(inject_key);
+    LOCKFUNC(handle_code);
+    LOCKFUNC(keyboard);
+    
+    DISABLE();
+    _farsetsel(__djgpp_dos_sel);
+    _farnspokew(0x41c, _farnspeekw(0x41a));
+
+    key_shifts = 0;
+    s1 = _farnspeekb(0x417);
+    s2 = _farnspeekb(0x418);
+    s3 = _farnspeekb(0x496);
+
+    if (s1&1) { key_shifts |= KB_SHIFT_FLAG; pc_key[KEY_RSHIFT]   = TRUE; }
+    if (s1&2) { key_shifts |= KB_SHIFT_FLAG; pc_key[KEY_LSHIFT]   = TRUE; }
+    if (s2&1) { key_shifts |= KB_CTRL_FLAG;  pc_key[KEY_LCONTROL] = TRUE; }
+    if (s2&2) { key_shifts |= KB_ALT_FLAG;   pc_key[KEY_ALT]      = TRUE; }
+    if (s3&4) { key_shifts |= KB_CTRL_FLAG;  pc_key[KEY_RCONTROL] = TRUE; }
+    if (s3&8) { key_shifts |= KB_ALT_FLAG;   pc_key[KEY_ALTGR]    = TRUE; }
+
+    if (s1&16) key_shifts |= KB_SCROLOCK_FLAG;
+    if (s1&32) key_shifts |= KB_NUMLOCK_FLAG;
+    if (s1&64) key_shifts |= KB_CAPSLOCK_FLAG;
+    update_leds(key_shifts);
+
+    key_enhanced = key_pause_loop = 0;
+    key_buffer.start = key_buffer.end = 0;
+    ENABLE();
+
+    pc_atexit(pc_remove_keyb);
+    keyboard_installed = TRUE;
+    return 0;
+ }
+}
diff --git a/src/glut/dos/PC_HW/pc_mouse.c b/src/glut/dos/PC_HW/pc_mouse.c
new file mode 100644
index 00000000000..cc3396cb213
--- /dev/null
+++ b/src/glut/dos/PC_HW/pc_mouse.c
@@ -0,0 +1,243 @@
+/*
+ * PC/HW routine collection v0.1 for DOS/DJGPP
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <dpmi.h>
+
+#include "pc_hw.h"
+
+
+
+#define MOUSE_STACK_SIZE 16384
+
+extern void mouse_wrapper (void);
+extern void mouse_wrapper_end (void);
+
+static MFUNC mouse_func;
+static void *mouse_stack;
+static long mouse_callback;
+static __dpmi_regs mouse_regs;
+
+volatile int pc_mouse_x, pc_mouse_y, pc_mouse_b;
+
+static int minx = 0;
+static int maxx = 319;
+static int miny = 0;
+static int maxy = 199;
+
+static int sx = 2;
+static int sy = 2;
+
+static int emulat3 = FALSE;
+
+static int ox, oy;
+
+static void mouse (__dpmi_regs *r)
+{
+ int nx = (signed short)r->x.si / sx;
+ int ny = (signed short)r->x.di / sy;
+ int dx = nx - ox;
+ int dy = ny - oy;
+ ox = nx;
+ oy = ny;
+
+ pc_mouse_b = r->x.bx;
+ pc_mouse_x = MID(minx, pc_mouse_x + dx, maxx);
+ pc_mouse_y = MID(miny, pc_mouse_y + dy, maxy);
+
+ if (emulat3) {
+    if ((pc_mouse_b&3)==3) {
+       pc_mouse_b = 4;
+    }
+ }
+
+ if (mouse_func) {
+    mouse_func(pc_mouse_x, pc_mouse_y, pc_mouse_b);
+ }
+} ENDOFUNC(mouse)
+
+void pc_remove_mouse (void)
+{
+ if (mouse_callback) {
+    pc_clexit(pc_remove_mouse);
+    __asm__("\n\
+		movl	%%edx, %%ecx	\n\
+		shrl	$16, %%ecx	\n\
+		movw	$0x0304, %%ax	\n\
+		int	$0x31		\n\
+		movw	$0x000c, %%ax	\n\
+		xorl	%%ecx, %%ecx	\n\
+		int	$0x33		\n\
+    "::"d"(mouse_callback):"%eax", "%ecx");
+
+    mouse_callback = 0;
+
+    free((void *)((unsigned long)mouse_stack-MOUSE_STACK_SIZE));
+ }
+}
+
+int pc_install_mouse (void)
+{
+ int buttons;
+
+ /* fail if already call-backed */
+ if (mouse_callback) {
+    return 0;
+ }
+
+ /* reset mouse and get status */
+ __asm__("\n\
+		xorl	%%eax, %%eax	\n\
+		int	$0x33		\n\
+		andl	%%ebx, %%eax	\n\
+		movl	%%eax, %0	\n\
+ ":"=g" (buttons)::"%eax", "%ebx");
+ if (!buttons) {
+    return 0;
+ }
+
+ /* lock wrapper */
+ LOCKDATA(mouse_func);
+ LOCKDATA(mouse_stack);
+ LOCKDATA(mouse_callback);
+ LOCKDATA(mouse_regs);
+ LOCKDATA(pc_mouse_x);
+ LOCKDATA(pc_mouse_y);
+ LOCKDATA(pc_mouse_b);
+ LOCKDATA(minx);
+ LOCKDATA(maxx);
+ LOCKDATA(miny);
+ LOCKDATA(maxy);
+ LOCKDATA(sx);
+ LOCKDATA(sy);
+ LOCKDATA(emulat3);
+ LOCKDATA(ox);
+ LOCKDATA(oy);
+ LOCKFUNC(mouse);
+ LOCKFUNC(mouse_wrapper);
+
+ /* grab a locked stack */
+ if ((mouse_stack=pc_malloc(MOUSE_STACK_SIZE))==NULL) {
+    return 0;
+ }
+
+ /* try to hook a call-back */
+ __asm__("\n\
+		pushl	%%ds		\n\
+		pushl	%%es		\n\
+		movw	$0x0303, %%ax	\n\
+		pushl	%%ds		\n\
+		pushl	%%cs		\n\
+		popl	%%ds		\n\
+		popl	%%es		\n\
+		int	$0x31		\n\
+		popl	%%es		\n\
+		popl	%%ds		\n\
+		jc	0f		\n\
+		shll	$16, %%ecx	\n\
+		movw	%%dx, %%cx	\n\
+		movl	%%ecx, %0	\n\
+	0:				\n\
+ ":"=g"(mouse_callback)
+  :"S" (mouse_wrapper), "D"(&mouse_regs)
+  :"%eax", "%ecx", "%edx");
+ if (!mouse_callback) {
+    free(mouse_stack);
+    return 0;
+ }
+
+ /* adjust stack */
+ mouse_stack = (void *)((unsigned long)mouse_stack + MOUSE_STACK_SIZE);
+
+ /* install the handler */
+ mouse_regs.x.ax = 0x000c;
+ mouse_regs.x.cx = 0x007f;
+ mouse_regs.x.dx = mouse_callback&0xffff;
+ mouse_regs.x.es = mouse_callback>>16;
+ __dpmi_int(0x33, &mouse_regs);
+
+ emulat3 = buttons<3;
+ pc_atexit(pc_remove_mouse);
+ return buttons;
+}
+
+MFUNC pc_install_mouse_handler (MFUNC handler)
+{
+ MFUNC old;
+
+ if (!mouse_callback && !pc_install_mouse()) {
+    return NULL;
+ }
+
+ old = mouse_func;
+ mouse_func = handler;
+ return old;
+}
+
+void pc_mouse_area (int x1, int y1, int x2, int y2)
+{
+ minx = x1;
+ maxx = x2;
+ miny = y1;
+ maxy = y2;
+}
+
+void pc_mouse_speed (int xspeed, int yspeed)
+{
+ DISABLE();
+
+ sx = MAX(1, xspeed);
+ sy = MAX(1, yspeed);
+
+ ENABLE();
+}
+
+void pc_show_mouse (void)
+{
+ /* not implemented */
+}
+void pc_scare_mouse (void)
+{
+ /* not implemented */
+}
+void pc_unscare_mouse (void)
+{
+ /* not implemented */
+}
+
+__asm__("\n\
+		.balign	4				\n\
+		.global	_mouse_wrapper			\n\
+_mouse_wrapper:						\n\
+		cld					\n\
+		lodsl					\n\
+		movl	%eax, %es:42(%edi)		\n\
+		addw	$4, %es:46(%edi)		\n\
+		pushl	%es				\n\
+		movl	%ss, %ebx			\n\
+		movl	%esp, %esi			\n\
+		movl	%cs:___djgpp_ds_alias, %ss	\n\
+		movl	%cs:_mouse_stack, %esp		\n\
+		pushl	%ss				\n\
+		pushl	%ss				\n\
+		popl	%es				\n\
+		popl	%ds				\n\
+		movl	___djgpp_dos_sel, %fs		\n\
+		pushl	%fs				\n\
+		popl	%gs				\n\
+		pushl	%edi				\n\
+		call	_mouse				\n\
+		popl	%edi				\n\
+		movl	%ebx, %ss			\n\
+		movl	%esi, %esp			\n\
+		popl	%es				\n\
+		iret					\n\
+							\n\
+		.balign	4				\n\
+		.global	_mouse_wrapper_end		\n\
+_mouse_wrapper_end:");
diff --git a/src/glut/dos/PC_HW/pc_timer.c b/src/glut/dos/PC_HW/pc_timer.c
new file mode 100644
index 00000000000..a8c58f67418
--- /dev/null
+++ b/src/glut/dos/PC_HW/pc_timer.c
@@ -0,0 +1,158 @@
+/*
+ * PC/HW routine collection v0.1 for DOS/DJGPP
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <pc.h>
+
+#include "pc_hw.h"
+
+#define TIMER_IRQ 0
+
+#define MAX_TIMERS 8
+
+#define PIT_FREQ 0x1234DD
+
+#define unvolatile(__v, __t) __extension__ ({union { volatile __t __cp; __t __p; } __q; __q.__cp = __v; __q.__p;})
+
+static int timer_installed;
+
+typedef struct {
+        volatile unsigned int counter, clock_ticks, freq;
+        volatile PFUNC func;
+        volatile void *parm;
+} TIMER;
+
+TIMER timer_main, timer_func[MAX_TIMERS];
+
+static int timer ()
+{
+ int i;
+
+ for (i=0;i<MAX_TIMERS;i++) {
+     TIMER *t = &timer_func[i];
+     if (t->func) {
+        t->clock_ticks += t->counter;
+        if (t->clock_ticks>=timer_main.counter) {
+           t->clock_ticks -= timer_main.counter;
+           t->func(unvolatile(t->parm, void *));
+        }
+     }
+ }
+
+ timer_main.clock_ticks += timer_main.counter;
+ if (timer_main.clock_ticks>=0x10000) {
+    timer_main.clock_ticks -= 0x10000;
+    return 1;
+ } else {
+    outportb(0x20, 0x20);
+    return 0;
+ }
+} ENDOFUNC(timer)
+
+void pc_remove_timer (void)
+{
+ if (timer_installed) {
+    timer_installed = FALSE;
+    pc_clexit(pc_remove_timer);
+
+    DISABLE();
+    outportb(0x43, 0x34);
+    outportb(0x40, 0);
+    outportb(0x40, 0);
+    ENABLE();
+
+    pc_remove_irq(TIMER_IRQ);
+ }
+}
+
+static int install_timer (void)
+{
+ if (timer_installed||pc_install_irq(TIMER_IRQ, timer)) {
+    return -1;
+ } else {
+    LOCKDATA(timer_func);
+    LOCKDATA(timer_main);
+    LOCKFUNC(timer);
+
+    timer_main.counter = 0x10000;
+
+    DISABLE();
+    outportb(0x43, 0x34);
+    outportb(0x40, 0);
+    outportb(0x40, 0);
+    timer_main.clock_ticks = 0;
+    ENABLE();
+
+    pc_atexit(pc_remove_timer);
+    timer_installed = TRUE;
+    return 0;
+ }
+}
+
+static TIMER *find_slot (PFUNC func)
+{
+ int i;
+
+ for (i=0;i<MAX_TIMERS;i++) {
+     if (timer_func[i].func==func) {
+        return &timer_func[i];
+     }
+ }
+ for (i=0;i<MAX_TIMERS;i++) {
+     if (!timer_func[i].func) {
+        return &timer_func[i];
+     }
+ }
+
+ return NULL;
+}
+
+int pc_install_int (PFUNC func, void *parm, unsigned int freq)
+{
+ int i;
+ TIMER *t;
+
+ if (!timer_installed) {
+    if (install_timer()) {
+       return -1;
+    }
+ }
+
+ if ((t=find_slot(func))!=NULL) {
+    unsigned int new_counter = PIT_FREQ / freq;
+
+    DISABLE();
+
+    t->func = func;
+    t->parm = parm;
+    t->freq = freq;
+    t->clock_ticks = 0;
+
+    if (new_counter < timer_main.counter) {
+       for (i=0;i<MAX_TIMERS;i++) {
+           if (timer_func[i].func) {
+              timer_func[i].counter = new_counter * timer_func[i].freq / freq;
+           }
+       }
+       outportb(0x43, 0x34);
+       outportb(0x40, (unsigned char)new_counter);
+       outportb(0x40, (unsigned char)(new_counter>>8));
+       timer_main.clock_ticks = 0;
+       timer_main.counter = new_counter;
+       timer_main.freq = freq;
+    } else {
+       t->counter = PIT_FREQ * freq / (timer_main.freq * timer_main.freq);
+    }
+
+    ENABLE();
+
+    return 0;
+ }
+ 
+ return -1;
+}
diff --git a/src/glut/dos/callback.c b/src/glut/dos/callback.c
new file mode 100644
index 00000000000..0e49c3adfed
--- /dev/null
+++ b/src/glut/dos/callback.c
@@ -0,0 +1,152 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.4
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+#include "internal.h"
+
+
+void APIENTRY glutDisplayFunc (void (GLUTCALLBACK *func) (void))
+{
+ display_func = func;
+}
+
+
+void APIENTRY glutReshapeFunc (void (GLUTCALLBACK *func) (int width, int height))
+{
+ reshape_func = func;
+}
+
+
+void APIENTRY glutKeyboardFunc (void (GLUTCALLBACK *func) (unsigned char key, int x, int y))
+{
+ keyboard_func = func;
+}
+
+
+void APIENTRY glutMouseFunc (void (GLUTCALLBACK *func) (int button, int state, int x, int y))
+{
+ mouse_func = func;
+}
+
+
+void APIENTRY glutMotionFunc (void (GLUTCALLBACK *func) (int x, int y))
+{
+ motion_func = func;
+}
+
+
+void APIENTRY glutPassiveMotionFunc (void (GLUTCALLBACK *func) (int x, int y))
+{
+ passive_motion_func = func;
+}
+
+
+void APIENTRY glutEntryFunc (void (GLUTCALLBACK *func) (int state))
+{
+ entry_func = func;
+}
+
+
+void APIENTRY glutVisibilityFunc (void (GLUTCALLBACK *func) (int state))
+{
+ visibility_func = func;
+}
+
+
+void APIENTRY glutIdleFunc (void (GLUTCALLBACK *func) (void))
+{
+ idle_func = func;
+}
+
+
+void APIENTRY glutTimerFunc (unsigned int millis, void (GLUTCALLBACK *func) (int value), int value)
+{
+}
+
+
+void APIENTRY glutMenuStateFunc (void (GLUTCALLBACK *func) (int state))
+{
+ menu_state_func = func;
+}
+
+
+void APIENTRY glutSpecialFunc (void (GLUTCALLBACK *func) (int key, int x, int y))
+{
+ special_func = func;
+}
+
+
+void APIENTRY glutSpaceballMotionFunc (void (GLUTCALLBACK *func) (int x, int y, int z))
+{
+}
+
+
+void APIENTRY glutSpaceballRotateFunc (void (GLUTCALLBACK *func) (int x, int y, int z))
+{
+}
+
+
+void APIENTRY glutSpaceballButtonFunc (void (GLUTCALLBACK *func) (int button, int state))
+{
+}
+
+
+void APIENTRY glutButtonBoxFunc (void (GLUTCALLBACK *func) (int button, int state))
+{
+}
+
+
+void APIENTRY glutDialsFunc (void (GLUTCALLBACK *func) (int dial, int value))
+{
+}
+
+
+void APIENTRY glutTabletMotionFunc (void (GLUTCALLBACK *func) (int x, int y))
+{
+}
+
+
+void APIENTRY glutTabletButtonFunc (void (GLUTCALLBACK *func) (int button, int state, int x, int y))
+{
+}
+
+
+void APIENTRY glutMenuStatusFunc (void (GLUTCALLBACK *func) (int status, int x, int y))
+{
+}
+
+
+void APIENTRY glutOverlayDisplayFunc (void (GLUTCALLBACK *func) (void))
+{
+}
+
+
+void APIENTRY glutWindowStatusFunc (void (GLUTCALLBACK *func) (int state))
+{
+}
diff --git a/src/glut/dos/color.c b/src/glut/dos/color.c
new file mode 100644
index 00000000000..b755459a3b4
--- /dev/null
+++ b/src/glut/dos/color.c
@@ -0,0 +1,46 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.4
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+
+
+void APIENTRY glutSetColor (int ndx, GLfloat red, GLfloat green, GLfloat blue)
+{
+}
+
+
+GLfloat APIENTRY glutGetColor (int ndx, int component)
+{
+ return 0.0;
+}
+
+
+void APIENTRY glutCopyColormap (int win)
+{
+}
diff --git a/src/glut/dos/depend b/src/glut/dos/depend
new file mode 100644
index 00000000000..b78eaa9e20e
--- /dev/null
+++ b/src/glut/dos/depend
@@ -0,0 +1,18 @@
+callback.o: callback.c ../include/GL/glut.h internal.h PC_HW/pc_hw.h
+color.o: color.c ../include/GL/glut.h
+font.o: font.c ../include/GL/glut.h
+globals.o: globals.c ../include/GL/glut.h internal.h PC_HW/pc_hw.h
+init.o: init.c ../include/GL/glut.h internal.h PC_HW/pc_hw.h
+menu.o: menu.c ../include/GL/glut.h
+models.o: models.c ../include/GL/glut.h
+overlay.o: overlay.c ../include/GL/glut.h
+state.o: state.c ../include/GL/glut.h
+teapot.o: teapot.c ../include/GL/glut.h
+window.o: window.c ../include/GL/glut.h ../include/GL/dmesa.h internal.h \
+  PC_HW/pc_hw.h
+
+PC_HW/pc_hw.o: PC_HW/pc_hw.c PC_HW/pc_hw.h
+PC_HW/pc_keyb.o: PC_HW/pc_keyb.c PC_HW/pc_hw.h
+PC_HW/pc_mouse.o: PC_HW/pc_mouse.c PC_HW/pc_hw.h
+PC_HW/pc_timer.o: PC_HW/pc_timer.c PC_HW/pc_hw.h
+PC_HW/pc_irq.o: PC_HW/pc_irq.S
diff --git a/src/glut/dos/font.c b/src/glut/dos/font.c
new file mode 100644
index 00000000000..c1303ff6f44
--- /dev/null
+++ b/src/glut/dos/font.c
@@ -0,0 +1,52 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.4
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+
+
+void APIENTRY glutBitmapCharacter (void *font, int character)
+{
+}
+
+
+int APIENTRY glutBitmapWidth (void *font, int character)
+{
+ return 0;
+}
+
+
+void APIENTRY glutStrokeCharacter (void *font, int character)
+{
+}
+
+
+int APIENTRY glutStrokeWidth (void *font, int character)
+{
+ return 0;
+}
diff --git a/src/glut/dos/globals.c b/src/glut/dos/globals.c
new file mode 100644
index 00000000000..9bdfe8e0ce0
--- /dev/null
+++ b/src/glut/dos/globals.c
@@ -0,0 +1,61 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.4
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+#include "internal.h"
+
+GLenum    g_display_mode = 0;
+GLuint    g_width        = DEFAULT_WIDTH;
+GLuint    g_height       = DEFAULT_HEIGHT;
+GLint     g_mouse        = GL_FALSE;
+GLboolean g_redisplay    = GL_FALSE;
+GLint     g_xpos         = 0;
+GLint     g_ypos         = 0;
+
+void (GLUTCALLBACK *display_func) (void)                              = NULL;
+void (GLUTCALLBACK *reshape_func) (int width, int height)             = NULL;
+void (GLUTCALLBACK *keyboard_func) (unsigned char key, int x, int y)  = NULL;
+void (GLUTCALLBACK *mouse_func) (int button, int state, int x, int y) = NULL;
+void (GLUTCALLBACK *motion_func) (int x, int y)                       = NULL;
+void (GLUTCALLBACK *passive_motion_func) (int x, int y)               = NULL;
+void (GLUTCALLBACK *entry_func) (int state)                           = NULL;
+void (GLUTCALLBACK *visibility_func) (int state)                      = NULL;
+void (GLUTCALLBACK *idle_func) (void)                                 = NULL;
+void (GLUTCALLBACK *menu_state_func) (int state)                      = NULL;
+void (GLUTCALLBACK *special_func) (int key, int x, int y)             = NULL;
+void (GLUTCALLBACK *spaceball_motion_func) (int x, int y, int z)      = NULL;
+void (GLUTCALLBACK *spaceball_rotate_func) (int x, int y, int z)      = NULL;
+void (GLUTCALLBACK *spaceball_button_func) (int button, int state)    = NULL;
+void (GLUTCALLBACK *button_box_func) (int button, int state)          = NULL;
+void (GLUTCALLBACK *dials_func) (int dial, int value)                 = NULL;
+void (GLUTCALLBACK *tablet_motion_func) (int x, int y)                = NULL;
+void (GLUTCALLBACK *tabled_button_func) (int button, int state, int x, int y) = NULL;
+void (GLUTCALLBACK *menu_status_func) (int status, int x, int y)      = NULL;
+void (GLUTCALLBACK *overlay_display_func) (void)                      = NULL;
+void (GLUTCALLBACK *window_status_func) (int state)                   = NULL;
diff --git a/src/glut/dos/init.c b/src/glut/dos/init.c
new file mode 100644
index 00000000000..d3f45821701
--- /dev/null
+++ b/src/glut/dos/init.c
@@ -0,0 +1,168 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <signal.h>
+#include "GL/glut.h"
+#include "internal.h"
+
+
+static void *old_sig_int  = NULL;
+
+
+static void signal_handler (int num)
+{
+ signal(SIGINT, old_sig_int);
+
+ raise(num);
+}
+
+
+void APIENTRY glutInit (int *argcp, char **argv)
+{
+ /* Hack alert:
+    only SIGINT (but not Ctrl-Break)
+    calls the destructors and will safely clean up
+ */
+ old_sig_int = signal(SIGINT, signal_handler);
+}
+
+
+void APIENTRY glutInitDisplayMode (unsigned int mode)
+{
+ g_display_mode = mode;
+
+ pc_install_keyb();
+ g_mouse = pc_install_mouse();
+}
+
+
+void APIENTRY glutInitWindowPosition (int x, int y)
+{
+ g_xpos = x;
+ g_ypos = y;
+}
+
+
+void APIENTRY glutInitWindowSize (int width, int height)
+{
+ g_width  = width;
+ g_height = height;
+}
+
+
+void APIENTRY glutMainLoop (void)
+{
+ GLboolean idle;
+ static int old_mouse_x = 0;
+ static int old_mouse_y = 0;
+ static int old_mouse_b = 0;
+
+ glutPostRedisplay();
+ if (reshape_func) reshape_func(g_width, g_height);
+ if (visibility_func) visibility_func(GLUT_VISIBLE);
+ if (g_mouse) pc_show_mouse();
+
+ while (GL_TRUE) {
+       idle = GL_TRUE;
+
+       if (g_redisplay && display_func) {
+          idle        = GL_FALSE;
+          g_redisplay = GL_FALSE;
+
+          if (g_mouse && !(g_display_mode & GLUT_DOUBLE)) pc_scare_mouse();
+          display_func();
+          if (g_mouse && !(g_display_mode & GLUT_DOUBLE)) pc_unscare_mouse();
+       }
+
+       if (pc_keypressed()) {
+          int key;
+
+          idle = GL_FALSE;
+          key  = pc_readkey();
+
+          switch (key>>16) {
+                 case KEY_F1:     if (special_func) special_func(GLUT_KEY_F1,        0, 0); break;
+                 case KEY_F2:     if (special_func) special_func(GLUT_KEY_F2,        0, 0); break;
+                 case KEY_F3:     if (special_func) special_func(GLUT_KEY_F3,        0, 0); break;
+                 case KEY_F4:     if (special_func) special_func(GLUT_KEY_F4,        0, 0); break;
+                 case KEY_F5:     if (special_func) special_func(GLUT_KEY_F5,        0, 0); break;
+                 case KEY_F6:     if (special_func) special_func(GLUT_KEY_F6,        0, 0); break;
+                 case KEY_F7:     if (special_func) special_func(GLUT_KEY_F7,        0, 0); break;
+                 case KEY_F8:     if (special_func) special_func(GLUT_KEY_F8,        0, 0); break;
+                 case KEY_F9:     if (special_func) special_func(GLUT_KEY_F9,        0, 0); break;
+                 case KEY_F10:    if (special_func) special_func(GLUT_KEY_F10,       0, 0); break;
+                 case KEY_F11:    if (special_func) special_func(GLUT_KEY_F11,       0, 0); break;
+                 case KEY_F12:    if (special_func) special_func(GLUT_KEY_F12,       0, 0); break;
+                 case KEY_LEFT:   if (special_func) special_func(GLUT_KEY_LEFT,      0, 0); break;
+                 case KEY_UP:     if (special_func) special_func(GLUT_KEY_UP,        0, 0); break;
+                 case KEY_RIGHT:  if (special_func) special_func(GLUT_KEY_RIGHT,     0, 0); break;
+                 case KEY_DOWN:   if (special_func) special_func(GLUT_KEY_DOWN,      0, 0); break;
+                 case KEY_PGUP:   if (special_func) special_func(GLUT_KEY_PAGE_UP,   0, 0); break;
+                 case KEY_PGDN:   if (special_func) special_func(GLUT_KEY_PAGE_DOWN, 0, 0); break;
+                 case KEY_HOME:   if (special_func) special_func(GLUT_KEY_HOME,      0, 0); break;
+                 case KEY_END:    if (special_func) special_func(GLUT_KEY_END,       0, 0); break;
+                 case KEY_INSERT: if (special_func) special_func(GLUT_KEY_INSERT,    0, 0); break;
+                 default:         if (keyboard_func) keyboard_func(key & 0xFF, 0, 0);
+          }
+       }
+
+       if (g_mouse && motion_func && ((pc_mouse_x != old_mouse_x) || (pc_mouse_y != old_mouse_y))) {
+          idle        = GL_FALSE;
+          old_mouse_x = pc_mouse_x;
+          old_mouse_y = pc_mouse_y;
+
+          motion_func(old_mouse_x, old_mouse_y);
+       }
+
+       if (g_mouse && mouse_func && (pc_mouse_b != old_mouse_b)) {
+          int new_mouse_b = pc_mouse_b;
+
+          if ((old_mouse_b & 1) && !(new_mouse_b & 1))
+             mouse_func(GLUT_LEFT_BUTTON, GLUT_UP,   pc_mouse_x, pc_mouse_y);
+          else if (!(old_mouse_b & 1) && (new_mouse_b & 1))
+             mouse_func(GLUT_LEFT_BUTTON, GLUT_DOWN, pc_mouse_x, pc_mouse_y);
+
+          if ((old_mouse_b & 2) && !(new_mouse_b & 2))
+             mouse_func(GLUT_RIGHT_BUTTON, GLUT_UP,   pc_mouse_x, pc_mouse_y);
+          else if (!(old_mouse_b & 2) && (new_mouse_b & 2))
+             mouse_func(GLUT_RIGHT_BUTTON, GLUT_DOWN, pc_mouse_x, pc_mouse_y);
+
+          if ((old_mouse_b & 4) && !(new_mouse_b & 4))
+             mouse_func(GLUT_MIDDLE_BUTTON, GLUT_UP,   pc_mouse_x, pc_mouse_y);
+          else if (!(old_mouse_b & 3) && (new_mouse_b & 4))
+             mouse_func(GLUT_MIDDLE_BUTTON, GLUT_DOWN, pc_mouse_x, pc_mouse_y);
+
+          idle        = GL_FALSE;
+          old_mouse_b = new_mouse_b;
+       }
+
+       if (idle && idle_func)
+          idle_func();
+ }
+}
diff --git a/src/glut/dos/internal.h b/src/glut/dos/internal.h
new file mode 100644
index 00000000000..f6c2c4d00c4
--- /dev/null
+++ b/src/glut/dos/internal.h
@@ -0,0 +1,76 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+ 
+#ifndef INTERNAL_H_included
+#define INTERNAL_H_included
+
+
+#include "GL/glut.h"
+#include "pc_hw/pc_hw.h"
+
+
+#define DEFAULT_WIDTH  640
+#define DEFAULT_HEIGHT 480
+#define COLOR_DEPTH    16
+
+#define DEPTH_SIZE   16
+#define STENCIL_SIZE 8
+#define ACCUM_SIZE   16
+
+extern GLenum    g_display_mode;
+extern GLuint    g_width;
+extern GLuint    g_height;
+extern GLint     g_mouse;
+extern GLboolean g_redisplay;
+extern GLint     g_xpos;
+extern GLint     g_ypos;
+
+extern void (GLUTCALLBACK *display_func) (void);
+extern void (GLUTCALLBACK *reshape_func) (int width, int height);
+extern void (GLUTCALLBACK *keyboard_func) (unsigned char key, int x, int y);
+extern void (GLUTCALLBACK *mouse_func) (int button, int state, int x, int y);
+extern void (GLUTCALLBACK *motion_func) (int x, int y);
+extern void (GLUTCALLBACK *passive_motion_func) (int x, int y);
+extern void (GLUTCALLBACK *entry_func) (int state);
+extern void (GLUTCALLBACK *visibility_func) (int state);
+extern void (GLUTCALLBACK *idle_func) (void);
+extern void (GLUTCALLBACK *menu_state_func) (int state);
+extern void (GLUTCALLBACK *special_func) (int key, int x, int y);
+extern void (GLUTCALLBACK *spaceball_motion_func) (int x, int y, int z);
+extern void (GLUTCALLBACK *spaceball_rotate_func) (int x, int y, int z);
+extern void (GLUTCALLBACK *spaceball_button_func) (int button, int state);
+extern void (GLUTCALLBACK *button_box_func) (int button, int state);
+extern void (GLUTCALLBACK *dials_func) (int dial, int value);
+extern void (GLUTCALLBACK *tablet_motion_func) (int x, int y);
+extern void (GLUTCALLBACK *tabled_button_func) (int button, int state, int x, int y);
+extern void (GLUTCALLBACK *menu_status_func) (int status, int x, int y);
+extern void (GLUTCALLBACK *overlay_display_func) (void);
+extern void (GLUTCALLBACK *window_status_func) (int state);
+
+#endif
diff --git a/src/glut/dos/menu.c b/src/glut/dos/menu.c
new file mode 100644
index 00000000000..48354edfe7c
--- /dev/null
+++ b/src/glut/dos/menu.c
@@ -0,0 +1,86 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.4
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+
+
+int APIENTRY glutCreateMenu (void (GLUTCALLBACK *func) (int))
+{
+ return 0;
+}
+
+void APIENTRY glutDestroyMenu (int menu)
+{
+}
+
+
+int APIENTRY glutGetMenu (void)
+{
+ return 0;
+}
+
+
+void APIENTRY glutSetMenu (int menu)
+{
+}
+
+
+void APIENTRY glutAddMenuEntry (const char *label, int value)
+{
+}
+
+
+void APIENTRY glutAddSubMenu (const char *label, int submenu)
+{
+}
+
+
+void APIENTRY glutChangeToMenuEntry (int item, const char *label, int value)
+{
+}
+
+
+void APIENTRY glutChangeToSubMenu (int item, const char *label, int submenu)
+{
+}
+
+
+void APIENTRY glutRemoveMenuItem (int item)
+{
+}
+
+
+void APIENTRY glutAttachMenu (int button)
+{
+}
+
+
+void APIENTRY glutDetachMenu (int button)
+{
+}
diff --git a/src/glut/dos/models.c b/src/glut/dos/models.c
new file mode 100644
index 00000000000..83729df7c45
--- /dev/null
+++ b/src/glut/dos/models.c
@@ -0,0 +1,598 @@
+
+/* Copyright (c) Mark J. Kilgard, 1994, 1997. */
+
+/**
+(c) Copyright 1993, Silicon Graphics, Inc.
+
+ALL RIGHTS RESERVED
+
+Permission to use, copy, modify, and distribute this software
+for any purpose and without fee is hereby granted, provided
+that the above copyright notice appear in all copies and that
+both the copyright notice and this permission notice appear in
+supporting documentation, and that the name of Silicon
+Graphics, Inc. not be used in advertising or publicity
+pertaining to distribution of the software without specific,
+written prior permission.
+
+THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
+"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
+OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
+MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
+EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
+ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
+INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
+SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
+NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
+OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+US Government Users Restricted Rights
+
+Use, duplication, or disclosure by the Government is subject to
+restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+(c)(1)(ii) of the Rights in Technical Data and Computer
+Software clause at DFARS 252.227-7013 and/or in similar or
+successor clauses in the FAR or the DOD or NASA FAR
+Supplement.  Unpublished-- rights reserved under the copyright
+laws of the United States.  Contractor/manufacturer is Silicon
+Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
+94039-7311.
+
+OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+*/
+
+#include <math.h>
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include "GL/glut.h"
+
+/* Some <math.h> files do not define M_PI... */
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+static GLUquadricObj *quadObj;
+
+#define QUAD_OBJ_INIT() { if(!quadObj) initQuadObj(); }
+
+static void
+initQuadObj(void)
+{
+  quadObj = gluNewQuadric();
+/*  if (!quadObj)
+    __glutFatalError("out of memory."); */
+}
+
+/* CENTRY */
+void APIENTRY
+glutWireSphere(GLdouble radius, GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  gluQuadricDrawStyle(quadObj, GLU_LINE);
+  gluQuadricNormals(quadObj, GLU_SMOOTH);
+  /* If we ever changed/used the texture or orientation state
+     of quadObj, we'd need to change it to the defaults here
+     with gluQuadricTexture and/or gluQuadricOrientation. */
+  gluSphere(quadObj, radius, slices, stacks);
+}
+
+void APIENTRY
+glutSolidSphere(GLdouble radius, GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  gluQuadricDrawStyle(quadObj, GLU_FILL);
+  gluQuadricNormals(quadObj, GLU_SMOOTH);
+  /* If we ever changed/used the texture or orientation state
+     of quadObj, we'd need to change it to the defaults here
+     with gluQuadricTexture and/or gluQuadricOrientation. */
+  gluSphere(quadObj, radius, slices, stacks);
+}
+
+void APIENTRY
+glutWireCone(GLdouble base, GLdouble height,
+  GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  gluQuadricDrawStyle(quadObj, GLU_LINE);
+  gluQuadricNormals(quadObj, GLU_SMOOTH);
+  /* If we ever changed/used the texture or orientation state
+     of quadObj, we'd need to change it to the defaults here
+     with gluQuadricTexture and/or gluQuadricOrientation. */
+  gluCylinder(quadObj, base, 0.0, height, slices, stacks);
+}
+
+void APIENTRY
+glutSolidCone(GLdouble base, GLdouble height,
+  GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  gluQuadricDrawStyle(quadObj, GLU_FILL);
+  gluQuadricNormals(quadObj, GLU_SMOOTH);
+  /* If we ever changed/used the texture or orientation state
+     of quadObj, we'd need to change it to the defaults here
+     with gluQuadricTexture and/or gluQuadricOrientation. */
+  gluCylinder(quadObj, base, 0.0, height, slices, stacks);
+}
+
+/* ENDCENTRY */
+
+static void
+drawBox(GLfloat size, GLenum type)
+{
+  static GLfloat n[6][3] =
+  {
+    {-1.0, 0.0, 0.0},
+    {0.0, 1.0, 0.0},
+    {1.0, 0.0, 0.0},
+    {0.0, -1.0, 0.0},
+    {0.0, 0.0, 1.0},
+    {0.0, 0.0, -1.0}
+  };
+  static GLint faces[6][4] =
+  {
+    {0, 1, 2, 3},
+    {3, 2, 6, 7},
+    {7, 6, 5, 4},
+    {4, 5, 1, 0},
+    {5, 6, 2, 1},
+    {7, 4, 0, 3}
+  };
+  GLfloat v[8][3];
+  GLint i;
+
+  v[0][0] = v[1][0] = v[2][0] = v[3][0] = -size / 2;
+  v[4][0] = v[5][0] = v[6][0] = v[7][0] = size / 2;
+  v[0][1] = v[1][1] = v[4][1] = v[5][1] = -size / 2;
+  v[2][1] = v[3][1] = v[6][1] = v[7][1] = size / 2;
+  v[0][2] = v[3][2] = v[4][2] = v[7][2] = -size / 2;
+  v[1][2] = v[2][2] = v[5][2] = v[6][2] = size / 2;
+
+  for (i = 5; i >= 0; i--) {
+    glBegin(type);
+    glNormal3fv(&n[i][0]);
+    glVertex3fv(&v[faces[i][0]][0]);
+    glVertex3fv(&v[faces[i][1]][0]);
+    glVertex3fv(&v[faces[i][2]][0]);
+    glVertex3fv(&v[faces[i][3]][0]);
+    glEnd();
+  }
+}
+
+/* CENTRY */
+void APIENTRY
+glutWireCube(GLdouble size)
+{
+  drawBox(size, GL_LINE_LOOP);
+}
+
+void APIENTRY
+glutSolidCube(GLdouble size)
+{
+  drawBox(size, GL_QUADS);
+}
+
+/* ENDCENTRY */
+
+static void
+doughnut(GLfloat r, GLfloat R, GLint nsides, GLint rings)
+{
+  int i, j;
+  GLfloat theta, phi, theta1;
+  GLfloat cosTheta, sinTheta;
+  GLfloat cosTheta1, sinTheta1;
+  GLfloat ringDelta, sideDelta;
+
+  ringDelta = 2.0 * M_PI / rings;
+  sideDelta = 2.0 * M_PI / nsides;
+
+  theta = 0.0;
+  cosTheta = 1.0;
+  sinTheta = 0.0;
+  for (i = rings - 1; i >= 0; i--) {
+    theta1 = theta + ringDelta;
+    cosTheta1 = cos(theta1);
+    sinTheta1 = sin(theta1);
+    glBegin(GL_QUAD_STRIP);
+    phi = 0.0;
+    for (j = nsides; j >= 0; j--) {
+      GLfloat cosPhi, sinPhi, dist;
+
+      phi += sideDelta;
+      cosPhi = cos(phi);
+      sinPhi = sin(phi);
+      dist = R + r * cosPhi;
+
+      glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+      glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
+      glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+      glVertex3f(cosTheta * dist, -sinTheta * dist,  r * sinPhi);
+    }
+    glEnd();
+    theta = theta1;
+    cosTheta = cosTheta1;
+    sinTheta = sinTheta1;
+  }
+}
+
+/* CENTRY */
+void APIENTRY
+glutWireTorus(GLdouble innerRadius, GLdouble outerRadius,
+  GLint nsides, GLint rings)
+{
+  glPushAttrib(GL_POLYGON_BIT);
+  glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+  doughnut(innerRadius, outerRadius, nsides, rings);
+  glPopAttrib();
+}
+
+void APIENTRY
+glutSolidTorus(GLdouble innerRadius, GLdouble outerRadius,
+  GLint nsides, GLint rings)
+{
+  doughnut(innerRadius, outerRadius, nsides, rings);
+}
+
+/* ENDCENTRY */
+
+static GLfloat dodec[20][3];
+
+static void
+initDodecahedron(void)
+{
+  GLfloat alpha, beta;
+
+  alpha = sqrt(2.0 / (3.0 + sqrt(5.0)));
+  beta = 1.0 + sqrt(6.0 / (3.0 + sqrt(5.0)) -
+    2.0 + 2.0 * sqrt(2.0 / (3.0 + sqrt(5.0))));
+  /* *INDENT-OFF* */
+  dodec[0][0] = -alpha; dodec[0][1] = 0; dodec[0][2] = beta;
+  dodec[1][0] = alpha; dodec[1][1] = 0; dodec[1][2] = beta;
+  dodec[2][0] = -1; dodec[2][1] = -1; dodec[2][2] = -1;
+  dodec[3][0] = -1; dodec[3][1] = -1; dodec[3][2] = 1;
+  dodec[4][0] = -1; dodec[4][1] = 1; dodec[4][2] = -1;
+  dodec[5][0] = -1; dodec[5][1] = 1; dodec[5][2] = 1;
+  dodec[6][0] = 1; dodec[6][1] = -1; dodec[6][2] = -1;
+  dodec[7][0] = 1; dodec[7][1] = -1; dodec[7][2] = 1;
+  dodec[8][0] = 1; dodec[8][1] = 1; dodec[8][2] = -1;
+  dodec[9][0] = 1; dodec[9][1] = 1; dodec[9][2] = 1;
+  dodec[10][0] = beta; dodec[10][1] = alpha; dodec[10][2] = 0;
+  dodec[11][0] = beta; dodec[11][1] = -alpha; dodec[11][2] = 0;
+  dodec[12][0] = -beta; dodec[12][1] = alpha; dodec[12][2] = 0;
+  dodec[13][0] = -beta; dodec[13][1] = -alpha; dodec[13][2] = 0;
+  dodec[14][0] = -alpha; dodec[14][1] = 0; dodec[14][2] = -beta;
+  dodec[15][0] = alpha; dodec[15][1] = 0; dodec[15][2] = -beta;
+  dodec[16][0] = 0; dodec[16][1] = beta; dodec[16][2] = alpha;
+  dodec[17][0] = 0; dodec[17][1] = beta; dodec[17][2] = -alpha;
+  dodec[18][0] = 0; dodec[18][1] = -beta; dodec[18][2] = alpha;
+  dodec[19][0] = 0; dodec[19][1] = -beta; dodec[19][2] = -alpha;
+  /* *INDENT-ON* */
+
+}
+
+#define DIFF3(_a,_b,_c) { \
+    (_c)[0] = (_a)[0] - (_b)[0]; \
+    (_c)[1] = (_a)[1] - (_b)[1]; \
+    (_c)[2] = (_a)[2] - (_b)[2]; \
+}
+
+static void
+crossprod(GLfloat v1[3], GLfloat v2[3], GLfloat prod[3])
+{
+  GLfloat p[3];         /* in case prod == v1 or v2 */
+
+  p[0] = v1[1] * v2[2] - v2[1] * v1[2];
+  p[1] = v1[2] * v2[0] - v2[2] * v1[0];
+  p[2] = v1[0] * v2[1] - v2[0] * v1[1];
+  prod[0] = p[0];
+  prod[1] = p[1];
+  prod[2] = p[2];
+}
+
+static void
+normalize(GLfloat v[3])
+{
+  GLfloat d;
+
+  d = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
+  if (d == 0.0) {
+//    __glutWarning("normalize: zero length vector");
+    v[0] = d = 1.0;
+  }
+  d = 1 / d;
+  v[0] *= d;
+  v[1] *= d;
+  v[2] *= d;
+}
+
+static void
+pentagon(int a, int b, int c, int d, int e, GLenum shadeType)
+{
+  GLfloat n0[3], d1[3], d2[3];
+
+  DIFF3(dodec[a], dodec[b], d1);
+  DIFF3(dodec[b], dodec[c], d2);
+  crossprod(d1, d2, n0);
+  normalize(n0);
+
+  glBegin(shadeType);
+  glNormal3fv(n0);
+  glVertex3fv(&dodec[a][0]);
+  glVertex3fv(&dodec[b][0]);
+  glVertex3fv(&dodec[c][0]);
+  glVertex3fv(&dodec[d][0]);
+  glVertex3fv(&dodec[e][0]);
+  glEnd();
+}
+
+static void
+dodecahedron(GLenum type)
+{
+  static int inited = 0;
+
+  if (inited == 0) {
+    inited = 1;
+    initDodecahedron();
+  }
+  pentagon(0, 1, 9, 16, 5, type);
+  pentagon(1, 0, 3, 18, 7, type);
+  pentagon(1, 7, 11, 10, 9, type);
+  pentagon(11, 7, 18, 19, 6, type);
+  pentagon(8, 17, 16, 9, 10, type);
+  pentagon(2, 14, 15, 6, 19, type);
+  pentagon(2, 13, 12, 4, 14, type);
+  pentagon(2, 19, 18, 3, 13, type);
+  pentagon(3, 0, 5, 12, 13, type);
+  pentagon(6, 15, 8, 10, 11, type);
+  pentagon(4, 17, 8, 15, 14, type);
+  pentagon(4, 12, 5, 16, 17, type);
+}
+
+/* CENTRY */
+void APIENTRY
+glutWireDodecahedron(void)
+{
+  dodecahedron(GL_LINE_LOOP);
+}
+
+void APIENTRY
+glutSolidDodecahedron(void)
+{
+  dodecahedron(GL_TRIANGLE_FAN);
+}
+
+/* ENDCENTRY */
+
+static void
+recorditem(GLfloat * n1, GLfloat * n2, GLfloat * n3,
+  GLenum shadeType)
+{
+  GLfloat q0[3], q1[3];
+
+  DIFF3(n1, n2, q0);
+  DIFF3(n2, n3, q1);
+  crossprod(q0, q1, q1);
+  normalize(q1);
+
+  glBegin(shadeType);
+  glNormal3fv(q1);
+  glVertex3fv(n1);
+  glVertex3fv(n2);
+  glVertex3fv(n3);
+  glEnd();
+}
+
+static void
+subdivide(GLfloat * v0, GLfloat * v1, GLfloat * v2,
+  GLenum shadeType)
+{
+  int depth;
+  GLfloat w0[3], w1[3], w2[3];
+  GLfloat l;
+  int i, j, k, n;
+
+  depth = 1;
+  for (i = 0; i < depth; i++) {
+    for (j = 0; i + j < depth; j++) {
+      k = depth - i - j;
+      for (n = 0; n < 3; n++) {
+        w0[n] = (i * v0[n] + j * v1[n] + k * v2[n]) / depth;
+        w1[n] = ((i + 1) * v0[n] + j * v1[n] + (k - 1) * v2[n])
+          / depth;
+        w2[n] = (i * v0[n] + (j + 1) * v1[n] + (k - 1) * v2[n])
+          / depth;
+      }
+      l = sqrt(w0[0] * w0[0] + w0[1] * w0[1] + w0[2] * w0[2]);
+      w0[0] /= l;
+      w0[1] /= l;
+      w0[2] /= l;
+      l = sqrt(w1[0] * w1[0] + w1[1] * w1[1] + w1[2] * w1[2]);
+      w1[0] /= l;
+      w1[1] /= l;
+      w1[2] /= l;
+      l = sqrt(w2[0] * w2[0] + w2[1] * w2[1] + w2[2] * w2[2]);
+      w2[0] /= l;
+      w2[1] /= l;
+      w2[2] /= l;
+      recorditem(w1, w0, w2, shadeType);
+    }
+  }
+}
+
+static void
+drawtriangle(int i, GLfloat data[][3], int ndx[][3],
+  GLenum shadeType)
+{
+  GLfloat *x0, *x1, *x2;
+
+  x0 = data[ndx[i][0]];
+  x1 = data[ndx[i][1]];
+  x2 = data[ndx[i][2]];
+  subdivide(x0, x1, x2, shadeType);
+}
+
+/* octahedron data: The octahedron produced is centered at the
+   origin and has radius 1.0 */
+static GLfloat odata[6][3] =
+{
+  {1.0, 0.0, 0.0},
+  {-1.0, 0.0, 0.0},
+  {0.0, 1.0, 0.0},
+  {0.0, -1.0, 0.0},
+  {0.0, 0.0, 1.0},
+  {0.0, 0.0, -1.0}
+};
+
+static int ondex[8][3] =
+{
+  {0, 4, 2},
+  {1, 2, 4},
+  {0, 3, 4},
+  {1, 4, 3},
+  {0, 2, 5},
+  {1, 5, 2},
+  {0, 5, 3},
+  {1, 3, 5}
+};
+
+static void
+octahedron(GLenum shadeType)
+{
+  int i;
+
+  for (i = 7; i >= 0; i--) {
+    drawtriangle(i, odata, ondex, shadeType);
+  }
+}
+
+/* CENTRY */
+void APIENTRY
+glutWireOctahedron(void)
+{
+  octahedron(GL_LINE_LOOP);
+}
+
+void APIENTRY
+glutSolidOctahedron(void)
+{
+  octahedron(GL_TRIANGLES);
+}
+
+/* ENDCENTRY */
+
+/* icosahedron data: These numbers are rigged to make an
+   icosahedron of radius 1.0 */
+
+#define X .525731112119133606
+#define Z .850650808352039932
+
+static GLfloat idata[12][3] =
+{
+  {-X, 0, Z},
+  {X, 0, Z},
+  {-X, 0, -Z},
+  {X, 0, -Z},
+  {0, Z, X},
+  {0, Z, -X},
+  {0, -Z, X},
+  {0, -Z, -X},
+  {Z, X, 0},
+  {-Z, X, 0},
+  {Z, -X, 0},
+  {-Z, -X, 0}
+};
+
+static int index[20][3] =
+{
+  {0, 4, 1},
+  {0, 9, 4},
+  {9, 5, 4},
+  {4, 5, 8},
+  {4, 8, 1},
+  {8, 10, 1},
+  {8, 3, 10},
+  {5, 3, 8},
+  {5, 2, 3},
+  {2, 7, 3},
+  {7, 10, 3},
+  {7, 6, 10},
+  {7, 11, 6},
+  {11, 0, 6},
+  {0, 1, 6},
+  {6, 1, 10},
+  {9, 0, 11},
+  {9, 11, 2},
+  {9, 2, 5},
+  {7, 2, 11},
+};
+
+static void
+icosahedron(GLenum shadeType)
+{
+  int i;
+
+  for (i = 19; i >= 0; i--) {
+    drawtriangle(i, idata, index, shadeType);
+  }
+}
+
+/* CENTRY */
+void APIENTRY
+glutWireIcosahedron(void)
+{
+  icosahedron(GL_LINE_LOOP);
+}
+
+void APIENTRY
+glutSolidIcosahedron(void)
+{
+  icosahedron(GL_TRIANGLES);
+}
+
+/* ENDCENTRY */
+
+/* tetrahedron data: */
+
+#define T       1.73205080756887729
+
+static GLfloat tdata[4][3] =
+{
+  {T, T, T},
+  {T, -T, -T},
+  {-T, T, -T},
+  {-T, -T, T}
+};
+
+static int tndex[4][3] =
+{
+  {0, 1, 3},
+  {2, 1, 0},
+  {3, 2, 0},
+  {1, 2, 3}
+};
+
+static void
+tetrahedron(GLenum shadeType)
+{
+  int i;
+
+  for (i = 3; i >= 0; i--)
+    drawtriangle(i, tdata, tndex, shadeType);
+}
+
+/* CENTRY */
+void APIENTRY
+glutWireTetrahedron(void)
+{
+  tetrahedron(GL_LINE_LOOP);
+}
+
+void APIENTRY
+glutSolidTetrahedron(void)
+{
+  tetrahedron(GL_TRIANGLES);
+}
+
+/* ENDCENTRY */
diff --git a/src/glut/dos/overlay.c b/src/glut/dos/overlay.c
new file mode 100644
index 00000000000..b2c392fcd49
--- /dev/null
+++ b/src/glut/dos/overlay.c
@@ -0,0 +1,60 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.4
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+
+
+void APIENTRY glutEstablishOverlay (void)
+{
+}
+
+
+void APIENTRY glutRemoveOverlay (void)
+{
+}
+
+
+void APIENTRY glutUseLayer (GLenum layer)
+{
+}
+
+
+void APIENTRY glutPostOverlayRedisplay (void)
+{
+}
+
+
+void APIENTRY glutShowOverlay (void)
+{
+}
+
+
+void APIENTRY glutHideOverlay (void)
+{
+}
diff --git a/src/glut/dos/state.c b/src/glut/dos/state.c
new file mode 100644
index 00000000000..9e5624deb4c
--- /dev/null
+++ b/src/glut/dos/state.c
@@ -0,0 +1,47 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.4
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+
+
+int APIENTRY glutGet (GLenum type)
+{
+ switch (type) {
+        case GLUT_WINDOW_RGBA:
+             return 1;
+        default:
+             return 0;
+ }
+}
+
+
+int APIENTRY glutDeviceGet (GLenum type)
+{
+ return 0;
+}
diff --git a/src/glut/dos/teapot.c b/src/glut/dos/teapot.c
new file mode 100644
index 00000000000..b75a97dd268
--- /dev/null
+++ b/src/glut/dos/teapot.c
@@ -0,0 +1,212 @@
+
+/* Copyright (c) Mark J. Kilgard, 1994. */
+
+/**
+(c) Copyright 1993, Silicon Graphics, Inc.
+
+ALL RIGHTS RESERVED
+
+Permission to use, copy, modify, and distribute this software
+for any purpose and without fee is hereby granted, provided
+that the above copyright notice appear in all copies and that
+both the copyright notice and this permission notice appear in
+supporting documentation, and that the name of Silicon
+Graphics, Inc. not be used in advertising or publicity
+pertaining to distribution of the software without specific,
+written prior permission.
+
+THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
+"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
+OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
+MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
+EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
+ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
+INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
+SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
+NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
+OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+US Government Users Restricted Rights
+
+Use, duplication, or disclosure by the Government is subject to
+restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+(c)(1)(ii) of the Rights in Technical Data and Computer
+Software clause at DFARS 252.227-7013 and/or in similar or
+successor clauses in the FAR or the DOD or NASA FAR
+Supplement.  Unpublished-- rights reserved under the copyright
+laws of the United States.  Contractor/manufacturer is Silicon
+Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
+94039-7311.
+
+OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+*/
+
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include "GL/glut.h"
+
+/* Rim, body, lid, and bottom data must be reflected in x and
+   y; handle and spout data across the y axis only.  */
+
+static int patchdata[][16] =
+{
+    /* rim */
+  {102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11,
+    12, 13, 14, 15},
+    /* body */
+  {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+    24, 25, 26, 27},
+  {24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36,
+    37, 38, 39, 40},
+    /* lid */
+  {96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101,
+    101, 0, 1, 2, 3,},
+  {0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112,
+    113, 114, 115, 116, 117},
+    /* bottom */
+  {118, 118, 118, 118, 124, 122, 119, 121, 123, 126,
+    125, 120, 40, 39, 38, 37},
+    /* handle */
+  {41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
+    53, 54, 55, 56},
+  {53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
+    28, 65, 66, 67},
+    /* spout */
+  {68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+    80, 81, 82, 83},
+  {80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+    92, 93, 94, 95}
+};
+/* *INDENT-OFF* */
+
+static float cpdata[][3] =
+{
+    {0.2, 0, 2.7}, {0.2, -0.112, 2.7}, {0.112, -0.2, 2.7}, {0,
+    -0.2, 2.7}, {1.3375, 0, 2.53125}, {1.3375, -0.749, 2.53125},
+    {0.749, -1.3375, 2.53125}, {0, -1.3375, 2.53125}, {1.4375,
+    0, 2.53125}, {1.4375, -0.805, 2.53125}, {0.805, -1.4375,
+    2.53125}, {0, -1.4375, 2.53125}, {1.5, 0, 2.4}, {1.5, -0.84,
+    2.4}, {0.84, -1.5, 2.4}, {0, -1.5, 2.4}, {1.75, 0, 1.875},
+    {1.75, -0.98, 1.875}, {0.98, -1.75, 1.875}, {0, -1.75,
+    1.875}, {2, 0, 1.35}, {2, -1.12, 1.35}, {1.12, -2, 1.35},
+    {0, -2, 1.35}, {2, 0, 0.9}, {2, -1.12, 0.9}, {1.12, -2,
+    0.9}, {0, -2, 0.9}, {-2, 0, 0.9}, {2, 0, 0.45}, {2, -1.12,
+    0.45}, {1.12, -2, 0.45}, {0, -2, 0.45}, {1.5, 0, 0.225},
+    {1.5, -0.84, 0.225}, {0.84, -1.5, 0.225}, {0, -1.5, 0.225},
+    {1.5, 0, 0.15}, {1.5, -0.84, 0.15}, {0.84, -1.5, 0.15}, {0,
+    -1.5, 0.15}, {-1.6, 0, 2.025}, {-1.6, -0.3, 2.025}, {-1.5,
+    -0.3, 2.25}, {-1.5, 0, 2.25}, {-2.3, 0, 2.025}, {-2.3, -0.3,
+    2.025}, {-2.5, -0.3, 2.25}, {-2.5, 0, 2.25}, {-2.7, 0,
+    2.025}, {-2.7, -0.3, 2.025}, {-3, -0.3, 2.25}, {-3, 0,
+    2.25}, {-2.7, 0, 1.8}, {-2.7, -0.3, 1.8}, {-3, -0.3, 1.8},
+    {-3, 0, 1.8}, {-2.7, 0, 1.575}, {-2.7, -0.3, 1.575}, {-3,
+    -0.3, 1.35}, {-3, 0, 1.35}, {-2.5, 0, 1.125}, {-2.5, -0.3,
+    1.125}, {-2.65, -0.3, 0.9375}, {-2.65, 0, 0.9375}, {-2,
+    -0.3, 0.9}, {-1.9, -0.3, 0.6}, {-1.9, 0, 0.6}, {1.7, 0,
+    1.425}, {1.7, -0.66, 1.425}, {1.7, -0.66, 0.6}, {1.7, 0,
+    0.6}, {2.6, 0, 1.425}, {2.6, -0.66, 1.425}, {3.1, -0.66,
+    0.825}, {3.1, 0, 0.825}, {2.3, 0, 2.1}, {2.3, -0.25, 2.1},
+    {2.4, -0.25, 2.025}, {2.4, 0, 2.025}, {2.7, 0, 2.4}, {2.7,
+    -0.25, 2.4}, {3.3, -0.25, 2.4}, {3.3, 0, 2.4}, {2.8, 0,
+    2.475}, {2.8, -0.25, 2.475}, {3.525, -0.25, 2.49375},
+    {3.525, 0, 2.49375}, {2.9, 0, 2.475}, {2.9, -0.15, 2.475},
+    {3.45, -0.15, 2.5125}, {3.45, 0, 2.5125}, {2.8, 0, 2.4},
+    {2.8, -0.15, 2.4}, {3.2, -0.15, 2.4}, {3.2, 0, 2.4}, {0, 0,
+    3.15}, {0.8, 0, 3.15}, {0.8, -0.45, 3.15}, {0.45, -0.8,
+    3.15}, {0, -0.8, 3.15}, {0, 0, 2.85}, {1.4, 0, 2.4}, {1.4,
+    -0.784, 2.4}, {0.784, -1.4, 2.4}, {0, -1.4, 2.4}, {0.4, 0,
+    2.55}, {0.4, -0.224, 2.55}, {0.224, -0.4, 2.55}, {0, -0.4,
+    2.55}, {1.3, 0, 2.55}, {1.3, -0.728, 2.55}, {0.728, -1.3,
+    2.55}, {0, -1.3, 2.55}, {1.3, 0, 2.4}, {1.3, -0.728, 2.4},
+    {0.728, -1.3, 2.4}, {0, -1.3, 2.4}, {0, 0, 0}, {1.425,
+    -0.798, 0}, {1.5, 0, 0.075}, {1.425, 0, 0}, {0.798, -1.425,
+    0}, {0, -1.5, 0.075}, {0, -1.425, 0}, {1.5, -0.84, 0.075},
+    {0.84, -1.5, 0.075}
+};
+
+static float tex[2][2][2] =
+{
+  { {0, 0},
+    {1, 0}},
+  { {0, 1},
+    {1, 1}}
+};
+
+/* *INDENT-ON* */
+
+static void
+teapot(GLint grid, GLdouble scale, GLenum type)
+{
+  float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
+  long i, j, k, l;
+
+  glPushAttrib(GL_ENABLE_BIT | GL_EVAL_BIT);
+  glEnable(GL_AUTO_NORMAL);
+  glEnable(GL_NORMALIZE);
+  glEnable(GL_MAP2_VERTEX_3);
+  glEnable(GL_MAP2_TEXTURE_COORD_2);
+  glPushMatrix();
+  glRotatef(270.0, 1.0, 0.0, 0.0);
+  glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale);
+  glTranslatef(0.0, 0.0, -1.5);
+  for (i = 0; i < 10; i++) {
+    for (j = 0; j < 4; j++) {
+      for (k = 0; k < 4; k++) {
+        for (l = 0; l < 3; l++) {
+          p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
+          q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
+          if (l == 1)
+            q[j][k][l] *= -1.0;
+          if (i < 6) {
+            r[j][k][l] =
+              cpdata[patchdata[i][j * 4 + (3 - k)]][l];
+            if (l == 0)
+              r[j][k][l] *= -1.0;
+            s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
+            if (l == 0)
+              s[j][k][l] *= -1.0;
+            if (l == 1)
+              s[j][k][l] *= -1.0;
+          }
+        }
+      }
+    }
+    glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2,
+      &tex[0][0][0]);
+    glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+      &p[0][0][0]);
+    glMapGrid2f(grid, 0.0, 1.0, grid, 0.0, 1.0);
+    glEvalMesh2(type, 0, grid, 0, grid);
+    glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+      &q[0][0][0]);
+    glEvalMesh2(type, 0, grid, 0, grid);
+    if (i < 6) {
+      glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+        &r[0][0][0]);
+      glEvalMesh2(type, 0, grid, 0, grid);
+      glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+        &s[0][0][0]);
+      glEvalMesh2(type, 0, grid, 0, grid);
+    }
+  }
+  glPopMatrix();
+  glPopAttrib();
+}
+
+/* CENTRY */
+void APIENTRY 
+glutSolidTeapot(GLdouble scale)
+{
+  teapot(7, scale, GL_FILL);
+}
+
+void APIENTRY 
+glutWireTeapot(GLdouble scale)
+{
+  teapot(10, scale, GL_LINE);
+}
+
+/* ENDCENTRY */
diff --git a/src/glut/dos/window.c b/src/glut/dos/window.c
new file mode 100644
index 00000000000..6d52524dfbd
--- /dev/null
+++ b/src/glut/dos/window.c
@@ -0,0 +1,160 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * DOS/DJGPP glut driver v0.1 for Mesa 4.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include "GL/glut.h"
+#include "GL/dmesa.h"
+#include "internal.h"
+
+
+static DMesaVisual  visual  = NULL;
+static DMesaContext context = NULL;
+static DMesaBuffer  buffer  = NULL;
+
+
+static void clean (void)
+{
+ __asm__("movw $3, %%ax; int $0x10":::"%eax");
+ pc_close_stdout();
+ pc_close_stderr();
+}
+
+int APIENTRY glutCreateWindow (const char *title)
+{
+ if ((visual=DMesaCreateVisual(COLOR_DEPTH,
+                               g_display_mode & GLUT_DOUBLE,
+                               g_display_mode & GLUT_DEPTH  ?DEPTH_SIZE  :0,
+                               g_display_mode & GLUT_STENCIL?STENCIL_SIZE:0,
+                               g_display_mode & GLUT_ACCUM  ?ACCUM_SIZE  :0))==NULL) {
+    return GL_FALSE;
+ }
+
+ if ((context=DMesaCreateContext(visual, NULL))==NULL) {
+    DMesaDestroyVisual(visual);
+    return GL_FALSE;
+ }
+
+ if ((buffer=DMesaCreateBuffer(visual, g_width, g_height, g_xpos, g_ypos))==NULL) {
+    DMesaDestroyContext(context);
+    DMesaDestroyVisual(visual);
+    return GL_FALSE;
+ }
+
+ if (!DMesaMakeCurrent(context, buffer)) {
+    DMesaDestroyContext(context);
+    DMesaDestroyVisual(visual);
+    return GL_FALSE;
+ }
+
+ pc_open_stdout();
+ pc_open_stderr();
+ pc_atexit(clean);
+
+ return GL_TRUE;
+}
+
+
+int APIENTRY glutCreateSubWindow (int win, int x, int y, int width, int height)
+{
+ return GL_FALSE;
+}
+
+
+void APIENTRY glutDestroyWindow (int win)
+{
+}
+
+
+void APIENTRY glutPostRedisplay (void)
+{
+ g_redisplay = GL_TRUE;
+}
+
+
+void APIENTRY glutSwapBuffers (void)
+{
+ if (g_mouse) pc_scare_mouse();
+ DMesaSwapBuffers(buffer);
+ if (g_mouse) pc_unscare_mouse();
+}
+
+
+int APIENTRY glutGetWindow (void)
+{
+ return 0;
+}
+
+
+void APIENTRY glutSetWindow (int win)
+{
+}
+
+
+void APIENTRY glutSetWindowTitle (const char *title)
+{
+}
+
+
+void APIENTRY glutSetIconTitle (const char *title)
+{
+}
+
+
+void APIENTRY glutPositionWindow (int x, int y)
+{
+}
+
+
+void APIENTRY glutReshapeWindow (int width, int height)
+{
+}
+
+
+void APIENTRY glutPopWindow (void)
+{
+}
+
+
+void APIENTRY glutPushWindow (void)
+{
+}
+
+
+void APIENTRY glutIconifyWindow (void)
+{
+}
+
+
+void APIENTRY glutShowWindow (void)
+{
+}
+
+
+void APIENTRY glutHideWindow (void)
+{
+}
-- 
2.30.2