add SciTech's GLDirect driver for Windows.

This code is donated to Mesa which allows the usage of
a Direct3D layer (DX7, DX8, DX9 or complete software fallback).

No build system exists for this code yet, that will come.....

2 files changed, 2241 insertions, 0 deletions

diff --git a/src/mesa/drivers/windows/gldirect/mesasw/colors.h b/src/mesa/drivers/windows/gldirect/mesasw/colors.h
new file mode 100644
index 0000000000..17371a96cc
--- /dev/null
+++ b/src/mesa/drivers/windows/gldirect/mesasw/colors.h
@@ -0,0 +1,523 @@
+/*	File name	:	colors.h
+ *  Version		:	2.3
+ *
+ *  Header file for display driver for Mesa 2.3  under 
+ *	Windows95 and WindowsNT 
+ *	This file defines macros and global variables  needed
+ *	for converting color format
+ *
+ *	Copyright (C) 1996-  Li Wei
+ *  Address		:		Institute of Artificial Intelligence
+ *				:			& Robotics
+ *				:		Xi'an Jiaotong University
+ *  Email		:		liwei@aiar.xjtu.edu.cn
+ *  Web page	:		http://sun.aiar.xjtu.edu.cn
+ *
+ *  This file and its associations are partially based on the 
+ *  Windows NT driver for Mesa, written by Mark Leaming
+ *  (mark@rsinc.com).
+ */
+
+/* $Log: ddcolors.h 1997/6/14 by Li Wei(liwei@aiar.xjtu.edu.cn)
+ * Macros for pixel format defined
+ */
+
+/*
+ * $Log: colors.h,v $
+ * Revision 1.1  2004/04/20 11:13:11  alanh
+ * add SciTech's GLDirect driver for Windows.
+ *
+ * This code is donated to Mesa which allows the usage of
+ * a Direct3D layer (DX7, DX8, DX9 or complete software fallback).
+ *
+ * No build system exists for this code yet, that will come.....
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:42  jtg
+ * Imported sources
+ *
+ * Revision 1.2  1999/01/03 03:08:57  brianp
+ * Ted Jump's changes
+ *
+ * Revision 1.1  1999/01/03 03:08:12  brianp
+ * Initial revision
+ *
+ * Revision 2.0.2  1997/4/30 15:58:00  CST by Li Wei(liwei@aiar.xjtu.edu.cn)
+ * Add LUTs need for dithering
+ */
+
+/*
+ * $Log: colors.h,v $
+ * Revision 1.1  2004/04/20 11:13:11  alanh
+ * add SciTech's GLDirect driver for Windows.
+ *
+ * This code is donated to Mesa which allows the usage of
+ * a Direct3D layer (DX7, DX8, DX9 or complete software fallback).
+ *
+ * No build system exists for this code yet, that will come.....
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:42  jtg
+ * Imported sources
+ *
+ * Revision 1.2  1999/01/03 03:08:57  brianp
+ * Ted Jump's changes
+ *
+ * Revision 1.1  1999/01/03 03:08:12  brianp
+ * Initial revision
+ *
+ * Revision 2.0.1  1997/4/29 15:52:00  CST by Li Wei(liwei@aiar.xjtu.edu.cn)
+ * Add BGR8 Macro
+ */
+ 
+/*
+ * $Log: colors.h,v $
+ * Revision 1.1  2004/04/20 11:13:11  alanh
+ * add SciTech's GLDirect driver for Windows.
+ *
+ * This code is donated to Mesa which allows the usage of
+ * a Direct3D layer (DX7, DX8, DX9 or complete software fallback).
+ *
+ * No build system exists for this code yet, that will come.....
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:42  jtg
+ * Imported sources
+ *
+ * Revision 1.2  1999/01/03 03:08:57  brianp
+ * Ted Jump's changes
+ *
+ * Revision 1.1  1999/01/03 03:08:12  brianp
+ * Initial revision
+ *
+ * Revision 2.0  1996/11/15 10:55:00  CST by Li Wei(liwei@aiar.xjtu.edu.cn)
+ * Initial revision
+ */
+/* Values for wmesa->pixelformat: */
+
+#define PF_8A8B8G8R	3	/* 32-bit TrueColor:  8-A, 8-B, 8-G, 8-R */
+#define PF_8R8G8B	4	/* 32-bit TrueColor:  8-R, 8-G, 8-B */
+#define PF_5R6G5B	5	/* 16-bit TrueColor:  5-R, 6-G, 5-B bits */
+#define PF_DITHER8	6	/* Dithered RGB using a lookup table */
+#define PF_LOOKUP	7	/* Undithered RGB using a lookup table */
+#define PF_GRAYSCALE	10	/* Grayscale or StaticGray */
+#define PF_BADFORMAT	11
+#define PF_INDEX8		12
+
+char ColorMap16[] = {
+0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,
+0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,
+0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x03,
+0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x04,
+0x05,0x05,0x05,0x05,0x05,0x05,0x05,0x05,
+0x06,0x06,0x06,0x06,0x06,0x06,0x06,0x06,
+0x07,0x07,0x07,0x07,0x07,0x07,0x07,0x07,
+0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,
+0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,
+0x0A,0x0A,0x0A,0x0A,0x0A,0x0A,0x0A,0x0A,
+0x0B,0x0B,0x0B,0x0B,0x0B,0x0B,0x0B,0x0B,
+0x0C,0x0C,0x0C,0x0C,0x0C,0x0C,0x0C,0x0C,
+0x0D,0x0D,0x0D,0x0D,0x0D,0x0D,0x0D,0x0D,
+0x0E,0x0E,0x0E,0x0E,0x0E,0x0E,0x0E,0x0E,
+0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,
+0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,
+0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,
+0x12,0x12,0x12,0x12,0x12,0x12,0x12,0x12,
+0x13,0x13,0x13,0x13,0x13,0x13,0x13,0x13,
+0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,
+0x15,0x15,0x15,0x15,0x15,0x15,0x15,0x15,
+0x16,0x16,0x16,0x16,0x16,0x16,0x16,0x16,
+0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,
+0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x18,
+0x19,0x19,0x19,0x19,0x19,0x19,0x19,0x19,
+0x1A,0x1A,0x1A,0x1A,0x1A,0x1A,0x1A,0x1A,
+0x1B,0x1B,0x1B,0x1B,0x1B,0x1B,0x1B,0x1B,
+0x1C,0x1C,0x1C,0x1C,0x1C,0x1C,0x1C,0x1C,
+0x1D,0x1D,0x1D,0x1D,0x1D,0x1D,0x1D,0x1D,
+0x1E,0x1E,0x1E,0x1E,0x1E,0x1E,0x1E,0x1E,
+0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F};
+
+#define BGR8(r,g,b)		(unsigned)(((BYTE)(b & 0xc0 | (g & 0xe0)>>2 | (r & 0xe0)>>5)))
+#ifdef DDRAW
+#define BGR16(r,g,b)	((WORD)(((BYTE)(ColorMap16[b]) | ((BYTE)(g&0xfc) << 3)) | (((WORD)(BYTE)(ColorMap16[r])) << 11)))
+#else
+#define BGR16(r,g,b)	((WORD)(((BYTE)(ColorMap16[b]) | ((BYTE)(ColorMap16[g]) << 5)) | (((WORD)(BYTE)(ColorMap16[r])) << 10)))
+#endif
+#define BGR24(r,g,b)	(unsigned long)(((DWORD)(((BYTE)(b)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(r))<<16))) << 8)
+#define BGR32(r,g,b)	(unsigned long)((DWORD)(((BYTE)(b)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(r))<<16)))
+
+
+
+/*
+ * If pixelformat==PF_8A8B8G8R:
+ */
+#define PACK_8A8B8G8R( R, G, B, A )	\
+	( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
+
+
+/*
+ * If pixelformat==PF_8R8G8B:
+ */
+#define PACK_8R8G8B( R, G, B)	 ( ((R) << 16) | ((G) << 8) | (B) )
+
+
+/*
+ * If pixelformat==PF_5R6G5B:
+ */
+
+
+#ifdef DDRAW
+#define PACK_5R6G5B( R, G, B) ((WORD)(((BYTE)(ColorMap16[B]) | ((BYTE)(G&0xfc) << 3)) | (((WORD)(BYTE)(ColorMap16[R])) << 11)))
+#else
+#define PACK_5R6G5B( R, G, B)	((WORD)(((BYTE)(ColorMap16[B]) | ((BYTE)(ColorMap16[G]) << 5)) | (((WORD)(BYTE)(ColorMap16[R])) << 10)))
+#endif
+/*----------------------------------------------------------------------------
+
+Division lookup tables.  These tables compute 0-255 divided by 51 and
+modulo 51.  These tables could approximate gamma correction.
+
+*/
+
+char unsigned const aDividedBy51Rounded[256] =
+{
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+};
+
+char unsigned const aDividedBy51[256] =
+{
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 
+};
+
+char unsigned const aModulo51[256] =
+{
+  0, 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, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+  38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 0, 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, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43,
+  44, 45, 46, 47, 48, 49, 50, 0, 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, 27, 28, 29, 30,
+  31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
+  49, 50, 0, 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, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+  36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 0, 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, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+  41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 0, 
+};
+
+/*----------------------------------------------------------------------------
+
+Multiplication LUTs.  These compute 0-5 times 6 and 36.
+
+*/
+
+char unsigned const aTimes6[6] =
+{
+  0, 6, 12, 18, 24, 30
+};
+
+char unsigned const aTimes36[6] =
+{
+  0, 36, 72, 108, 144, 180
+};
+
+
+/*----------------------------------------------------------------------------
+
+Dither matrices for 8 bit to 2.6 bit halftones.
+
+*/
+
+char unsigned const aHalftone16x16[256] =
+{
+  0, 44, 9, 41, 3, 46, 12, 43, 1, 44, 10, 41, 3, 46, 12, 43,
+  34, 16, 25, 19, 37, 18, 28, 21, 35, 16, 26, 19, 37, 18, 28, 21,
+  38, 6, 47, 3, 40, 9, 50, 6, 38, 7, 47, 4, 40, 9, 49, 6,
+  22, 28, 13, 31, 25, 31, 15, 34, 22, 29, 13, 32, 24, 31, 15, 34,
+  2, 46, 12, 43, 1, 45, 10, 42, 2, 45, 11, 42, 1, 45, 11, 42,
+  37, 18, 27, 21, 35, 17, 26, 20, 36, 17, 27, 20, 36, 17, 26, 20,
+  40, 8, 49, 5, 38, 7, 48, 4, 39, 8, 48, 5, 39, 7, 48, 4,
+  24, 30, 15, 33, 23, 29, 13, 32, 23, 30, 14, 33, 23, 29, 14, 32,
+  2, 46, 12, 43, 0, 44, 10, 41, 3, 47, 12, 44, 0, 44, 10, 41,
+  37, 18, 27, 21, 35, 16, 25, 19, 37, 19, 28, 22, 35, 16, 25, 19,
+  40, 9, 49, 5, 38, 7, 47, 4, 40, 9, 50, 6, 38, 6, 47, 3,
+  24, 30, 15, 34, 22, 29, 13, 32, 25, 31, 15, 34, 22, 28, 13, 31,
+  1, 45, 11, 42, 2, 46, 11, 42, 1, 45, 10, 41, 2, 46, 11, 43,
+  36, 17, 26, 20, 36, 17, 27, 21, 35, 16, 26, 20, 36, 18, 27, 21,
+  39, 8, 48, 4, 39, 8, 49, 5, 38, 7, 48, 4, 39, 8, 49, 5,
+  23, 29, 14, 33, 24, 30, 14, 33, 23, 29, 13, 32, 24, 30, 14, 33,
+};
+
+char unsigned const aHalftone8x8[64] =
+{
+   0, 38,  9, 47,  2, 40, 11, 50,
+  25, 12, 35, 22, 27, 15, 37, 24,
+   6, 44,  3, 41,  8, 47,  5, 43,
+  31, 19, 28, 15, 34, 21, 31, 18,
+   1, 39, 11, 49,  0, 39, 10, 48,
+  27, 14, 36, 23, 26, 13, 35, 23,
+   7, 46,  4, 43,  7, 45,  3, 42,
+  33, 20, 30, 17, 32, 19, 29, 16,
+};
+
+char unsigned const aHalftone4x4_1[16] =
+{
+  0, 25, 6, 31,
+  38, 12, 44, 19,
+  9, 35, 3, 28,
+  47, 22, 41, 15
+};
+
+char unsigned const aHalftone4x4_2[16] =
+{
+  41, 3, 9, 28,
+  35, 15, 22, 47,
+  6, 25, 38, 0,
+  19, 44, 31, 12
+};
+
+/***************************************************************************
+  aWinGHalftoneTranslation
+
+  Translates a 2.6 bit-per-pixel halftoned representation into the
+  slightly rearranged WinG Halftone Palette.
+*/
+
+char unsigned const aWinGHalftoneTranslation[216] =
+{
+  0,
+  29,
+  30,
+  31,
+  32,
+  249,
+  33,
+  34,
+  35,
+  36,
+  37,
+  38,
+  39,
+  40,
+  41,
+  42,
+  43,
+  44,
+  45,
+  46,
+  47,
+  48,
+  49,
+  50,
+  51,
+  52,
+  53,
+  54,
+  55,
+  56,
+  250,
+  250,
+  57,
+  58,
+  59,
+  251,
+  60,
+  61,
+  62,
+  63,
+  64,
+  65,
+  66,
+  67,
+  68,
+  69,
+  70,
+  71,
+  72,
+  73,
+  74,
+  75,
+  76,
+  77,
+  78,
+  79,
+  80,
+  81,
+  82,
+  83,
+  84,
+  85,
+  86,
+  87,
+  88,
+  89,
+  250,
+  90,
+  91,
+  92,
+  93,
+  94,
+  95,
+  96,
+  97,
+  98,
+  99,
+  100,
+  101,
+  102,
+  103,
+  104,
+  105,
+  106,
+  107,
+  108,
+  109,
+  110,
+  111,
+  227,
+  112,
+  113,
+  114,
+  115,
+  116,
+  117,
+  118,
+  119,
+  151,
+  120,
+  121,
+  122,
+  123,
+  124,
+  228,
+  125,
+  126,
+  229,
+  133,
+  162,
+  135,
+  131,
+  132,
+  137,
+  166,
+  134,
+  140,
+  130,
+  136,
+  143,
+  138,
+  139,
+  174,
+  141,
+  142,
+  177,
+  129,
+  144,
+  145,
+  146,
+  147,
+  148,
+  149,
+  150,
+  157,
+  152,
+  153,
+  154,
+  155,
+  156,
+  192,
+  158,
+  159,
+  160,
+  161,
+  196,
+  163,
+  164,
+  165,
+  127,
+  199,
+  167,
+  168,
+  169,
+  170,
+  171,
+  172,
+  173,
+  207,
+  175,
+  176,
+  210,
+  178,
+  179,
+  180,
+  181,
+  182,
+  183,
+  184,
+  185,
+  186,
+  187,
+  188,
+  189,
+  190,
+  191,
+  224,
+  193,
+  194,
+  195,
+  252,
+  252,
+  197,
+  198,
+  128,
+  253,
+  252,
+  200,
+  201,
+  202,
+  203,
+  204,
+  205,
+  206,
+  230,
+  208,
+  209,
+  231,
+  211,
+  212,
+  213,
+  214,
+  215,
+  216,
+  217,
+  218,
+  219,
+  220,
+  221,
+  222,
+  254,
+  223,
+  232,
+  225,
+  226,
+  255,
+};
\ No newline at end of file
diff --git a/src/mesa/drivers/windows/gldirect/mesasw/gld_wgl_mesasw.c b/src/mesa/drivers/windows/gldirect/mesasw/gld_wgl_mesasw.c
new file mode 100644
index 0000000000..ed58e35301
--- /dev/null
+++ b/src/mesa/drivers/windows/gldirect/mesasw/gld_wgl_mesasw.c
@@ -0,0 +1,1718 @@
+/****************************************************************************
+*
+*                        Mesa 3-D graphics library
+*                        Direct3D Driver Interface
+*
+*  ========================================================================
+*
+*   Copyright (C) 1991-2004 SciTech Software, Inc. 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
+*   SCITECH SOFTWARE INC 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.
+*
+*  ======================================================================
+*
+* Language:     ANSI C
+* Environment:  Windows 9x/2000/XP/XBox (Win32)
+*
+* Description:  Mesa Software WGL (WindowsGL)
+*
+****************************************************************************/
+
+#include <windows.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include <GL/glext.h>
+
+#include "glheader.h"
+#include "colors.h"
+#include "context.h"
+#include "colormac.h"
+#include "dd.h"
+#include "depth.h"
+#include "extensions.h"
+#include "macros.h"
+#include "matrix.h"
+// #include "mem.h"
+#include "mmath.h"
+#include "mtypes.h"
+#include "texformat.h"
+#include "texstore.h"
+#include "array_cache/acache.h"
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "swrast/s_context.h"
+#include "swrast/s_depth.h"
+#include "swrast/s_lines.h"
+#include "swrast/s_triangle.h"
+#include "swrast/s_trispan.h"
+#include "tnl/tnl.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+
+#include "dglcontext.h"
+#include "gld_driver.h"
+
+//---------------------------------------------------------------------------
+//---------------------------------------------------------------------------
+
+DGL_pixelFormat pfTemplateMesaSW =
+{
+    {
+	sizeof(PIXELFORMATDESCRIPTOR),	// Size of the data structure
+		1,							// Structure version - should be 1
+									// Flags:
+		PFD_DRAW_TO_WINDOW |		// The buffer can draw to a window or device surface.
+		PFD_DRAW_TO_BITMAP |		// The buffer can draw to a bitmap. (DaveM)
+		PFD_SUPPORT_GDI |			// The buffer supports GDI drawing. (DaveM)
+		PFD_SUPPORT_OPENGL |		// The buffer supports OpenGL drawing.
+		PFD_DOUBLEBUFFER |			// The buffer is double-buffered.
+		0,							// Placeholder for easy commenting of above flags
+		PFD_TYPE_RGBA,				// Pixel type RGBA.
+		32,							// Total colour bitplanes (excluding alpha bitplanes)
+		8, 0,						// Red bits, shift
+		8, 8,						// Green bits, shift
+		8, 16,						// Blue bits, shift
+		8, 24,						// Alpha bits, shift (destination alpha)
+		64,							// Accumulator bits (total)
+		16, 16, 16, 16,				// Accumulator bits: Red, Green, Blue, Alpha
+		16,							// Depth bits
+		8,							// Stencil bits
+		0,							// Number of auxiliary buffers
+		0,							// Layer type
+		0,							// Specifies the number of overlay and underlay planes.
+		0,							// Layer mask
+		0,							// Specifies the transparent color or index of an underlay plane.
+		0							// Damage mask
+	},
+	0,	// Unused
+};
+
+//---------------------------------------------------------------------------
+// Extensions
+//---------------------------------------------------------------------------
+
+typedef struct {
+	PROC proc;
+	char *name;
+}  GLD_extension;
+
+static GLD_extension GLD_extList[] = {
+#ifdef GL_EXT_polygon_offset
+    {	(PROC)glPolygonOffsetEXT,		"glPolygonOffsetEXT"		},
+#endif
+    {	(PROC)glBlendEquationEXT,		"glBlendEquationEXT"		},
+    {	(PROC)glBlendColorEXT,			"glBlendColorExt"			},
+    {	(PROC)glVertexPointerEXT,		"glVertexPointerEXT"		},
+    {	(PROC)glNormalPointerEXT,		"glNormalPointerEXT"		},
+    {	(PROC)glColorPointerEXT,		"glColorPointerEXT"			},
+    {	(PROC)glIndexPointerEXT,		"glIndexPointerEXT"			},
+    {	(PROC)glTexCoordPointerEXT,		"glTexCoordPointer"			},
+    {	(PROC)glEdgeFlagPointerEXT,		"glEdgeFlagPointerEXT"		},
+    {	(PROC)glGetPointervEXT,			"glGetPointervEXT"			},
+    {	(PROC)glArrayElementEXT,		"glArrayElementEXT"			},
+    {	(PROC)glDrawArraysEXT,			"glDrawArrayEXT"			},
+    {	(PROC)glAreTexturesResidentEXT,	"glAreTexturesResidentEXT"	},
+    {	(PROC)glBindTextureEXT,			"glBindTextureEXT"			},
+    {	(PROC)glDeleteTexturesEXT,		"glDeleteTexturesEXT"		},
+    {	(PROC)glGenTexturesEXT,			"glGenTexturesEXT"			},
+    {	(PROC)glIsTextureEXT,			"glIsTextureEXT"			},
+    {	(PROC)glPrioritizeTexturesEXT,	"glPrioritizeTexturesEXT"	},
+    {	(PROC)glCopyTexSubImage3DEXT,	"glCopyTexSubImage3DEXT"	},
+    {	(PROC)glTexImage3DEXT,			"glTexImage3DEXT"			},
+    {	(PROC)glTexSubImage3DEXT,		"glTexSubImage3DEXT"		},
+    {	(PROC)glPointParameterfEXT,		"glPointParameterfEXT"		},
+    {	(PROC)glPointParameterfvEXT,	"glPointParameterfvEXT"		},
+    {	(PROC)glLockArraysEXT,			"glLockArraysEXT"			},
+    {	(PROC)glUnlockArraysEXT,		"glUnlockArraysEXT"			},
+	{	NULL,							"\0"						}
+};
+
+//---------------------------------------------------------------------------
+// WMesa Internal Functions
+//---------------------------------------------------------------------------
+
+#define PAGE_FILE	0xffffffff
+
+#define REDBITS		0x03
+#define REDSHIFT	0x00
+#define GREENBITS	0x03
+#define GREENSHIFT	0x03
+#define BLUEBITS	0x02
+#define BLUESHIFT	0x06
+
+typedef struct _dibSection {
+	HDC 	hDC;
+	HANDLE	hFileMap;
+	BOOL	fFlushed;
+	LPVOID	base;
+} WMDIBSECTION, *PWMDIBSECTION;
+
+typedef struct wmesa_context {
+	HWND				Window;
+	HDC 				hDC;
+	HPALETTE			hPalette;
+	HPALETTE			hOldPalette;
+	HPEN				hPen;
+	HPEN				hOldPen;
+	HCURSOR 			hOldCursor;
+	COLORREF			crColor;
+	// 3D projection stuff
+	RECT				drawRect;
+	UINT				uiDIBoffset;
+	// OpenGL stuff
+	HPALETTE			hGLPalette;
+	GLuint				width;
+	GLuint				height;
+	GLuint				ScanWidth;
+	GLboolean			db_flag;	//* double buffered?
+	GLboolean			rgb_flag;	//* RGB mode?
+	GLboolean			dither_flag;	//* use dither when 256 color mode for RGB?
+	GLuint				depth;		//* bits per pixel (1, 8, 24, etc)
+	ULONG				pixel;	// current color index or RGBA pixel value
+	ULONG				clearpixel; //* pixel for clearing the color buffers
+	PBYTE				ScreenMem; // WinG memory
+	BITMAPINFO			*IndexFormat;
+	HPALETTE			hPal; // Current Palette
+	HPALETTE			hPalHalfTone;
+	
+	
+	WMDIBSECTION		dib;
+	BITMAPINFO			bmi;
+	HBITMAP 			hbmDIB;
+	HBITMAP 			hOldBitmap;
+	HBITMAP 			Old_Compat_BM;
+	HBITMAP 			Compat_BM;			  // Bitmap for double buffering
+	PBYTE				pbPixels;
+	int 				nColors;
+	BYTE				cColorBits;
+	int 				pixelformat;
+	
+	RECT					rectOffScreen;
+	RECT					rectSurface;
+//	HWND					hwnd;
+	DWORD					pitch;
+	PBYTE					addrOffScreen;
+
+	// We always double-buffer, for performance reasons, but
+	// we need to know which of SwapBuffers() or glFlush() to
+	// handle. If we're emulating, then we update on Flush(),
+	// otherwise we update on SwapBufers(). KeithH
+	BOOL				bEmulateSingleBuffer;
+} WMesaContext, *PWMC;
+
+#define GLD_GET_WMESA_DRIVER(c)	(WMesaContext*)(c)->glPriv
+
+// TODO:
+GLint stereo_flag = 0 ;
+
+/* If we are double-buffering, we want to get the DC for the
+ * off-screen DIB, otherwise the DC for the window.
+ */
+#define DD_GETDC ((Current->db_flag) ? Current->dib.hDC : Current->hDC )
+#define DD_RELEASEDC
+
+#define FLIP(Y)  (Current->height-(Y)-1)
+
+struct DISPLAY_OPTIONS {
+	int  stereo;
+	int  fullScreen;
+	int	 mode;
+	int	 bpp;
+};
+
+struct DISPLAY_OPTIONS displayOptions;
+
+//---------------------------------------------------------------------------
+
+static unsigned char threeto8[8] = {
+  0, 0111>>1, 0222>>1, 0333>>1, 0444>>1, 0555>>1, 0666>>1, 0377
+};
+
+static unsigned char twoto8[4] = {
+  0, 0x55, 0xaa, 0xff
+};
+
+static unsigned char oneto8[2] = {
+  0, 255
+};
+
+//---------------------------------------------------------------------------
+
+BYTE DITHER_RGB_2_8BIT( int red, int green, int blue, int pixel, int scanline)
+{
+  char unsigned redtemp, greentemp, bluetemp, paletteindex;
+  
+  //*** now, look up each value in the halftone matrix
+  //*** using an 8x8 ordered dither.
+  redtemp = aDividedBy51[red]
+    + (aModulo51[red] > aHalftone8x8[(pixel%8)*8
+				    + scanline%8]);
+  greentemp = aDividedBy51[(char unsigned)green]
+    + (aModulo51[green] > aHalftone8x8[
+      (pixel%8)*8 + scanline%8]);
+  bluetemp = aDividedBy51[(char unsigned)blue]
+    + (aModulo51[blue] > aHalftone8x8[
+      (pixel%8)*8 +scanline%8]);
+  
+  //*** recombine the halftoned rgb values into a palette index
+  paletteindex =
+    redtemp + aTimes6[greentemp] + aTimes36[bluetemp];
+  
+  //*** and translate through the wing halftone palette
+  //*** translation vector to give the correct value.
+  return aWinGHalftoneTranslation[paletteindex];
+}
+
+//---------------------------------------------------------------------------
+
+static unsigned char componentFromIndex(UCHAR i, UINT nbits, UINT shift)
+{
+  unsigned char val;
+  
+  val = i >> shift;
+  switch (nbits) {
+    
+  case 1:
+    val &= 0x1;
+    return oneto8[val];
+    
+  case 2:
+    val &= 0x3;
+    return twoto8[val];
+    
+  case 3:
+    val &= 0x7;
+    return threeto8[val];
+    
+  default:
+    return 0;
+  }
+}
+
+//---------------------------------------------------------------------------
+
+
+void wmSetPixel(PWMC pwc, int iScanLine, int iPixel, BYTE r, BYTE g, BYTE b)
+{
+	WMesaContext *Current = pwc;
+
+	// Test for invalid scanline parameter. KeithH
+	if ((iScanLine < 0) || (iScanLine >= pwc->height))
+		return;
+
+  if (Current->db_flag) {
+    LPBYTE  lpb = pwc->pbPixels;
+    UINT    nBypp = pwc->cColorBits >> 3;
+    UINT    nOffset = iPixel % nBypp;
+    
+    lpb += pwc->ScanWidth * iScanLine;
+    lpb += iPixel * nBypp;
+    
+    if(nBypp == 1){
+      if(pwc->dither_flag)
+	*lpb = DITHER_RGB_2_8BIT(r,g,b,iScanLine,iPixel);
+      else
+	*lpb = BGR8(r,g,b);
+    }
+    else if(nBypp == 2)
+      *((LPWORD)lpb) = BGR16(r,g,b);
+    else if (nBypp == 3)
+      *((LPDWORD)lpb) = BGR24(r,g,b);
+    else if (nBypp == 4)
+      *((LPDWORD)lpb) = BGR32(r,g,b);
+  }
+  else{
+    SetPixel(Current->hDC, iPixel, iScanLine, RGB(r,g,b));
+  }
+}
+
+//---------------------------------------------------------------------------
+
+void  wmCreateDIBSection(
+  HDC   hDC,
+  PWMC pwc,    // handle of device context
+  CONST BITMAPINFO *pbmi,  // bitmap size, format, and color data
+  UINT iUsage  // color data type indicator: RGB values or palette indices
+  )
+{
+  DWORD   dwSize = 0;
+  DWORD   dwScanWidth;
+  UINT    nBypp = pwc->cColorBits / 8;
+  HDC     hic;
+  
+  dwScanWidth = (((pwc->ScanWidth * nBypp)+ 3) & ~3);
+  
+  pwc->ScanWidth =pwc->pitch = dwScanWidth;
+  
+  if (stereo_flag)
+    pwc->ScanWidth = 2* pwc->pitch;
+  
+  dwSize = sizeof(BITMAPINFO) + (dwScanWidth * pwc->height);
+  
+  pwc->dib.hFileMap = CreateFileMapping((HANDLE)PAGE_FILE,
+					NULL,
+					PAGE_READWRITE | SEC_COMMIT,
+					0,
+					dwSize,
+					NULL);
+  
+  if (!pwc->dib.hFileMap)
+    return;
+  
+  pwc->dib.base = MapViewOfFile(pwc->dib.hFileMap,
+				FILE_MAP_ALL_ACCESS,
+				0,
+				0,
+				0);
+  
+  if(!pwc->dib.base){
+    CloseHandle(pwc->dib.hFileMap);
+    return;
+  }
+  
+
+  CopyMemory(pwc->dib.base, pbmi, sizeof(BITMAPINFO));
+  
+  hic = CreateIC("display", NULL, NULL, NULL);
+  pwc->dib.hDC = CreateCompatibleDC(hic);
+  
+
+  pwc->hbmDIB = CreateDIBSection(hic,
+				 &(pwc->bmi),
+				 (iUsage ? DIB_PAL_COLORS : DIB_RGB_COLORS),
+				 &(pwc->pbPixels),
+				 pwc->dib.hFileMap,
+				 0);
+  pwc->ScreenMem = pwc->addrOffScreen = pwc->pbPixels;
+  pwc->hOldBitmap = SelectObject(pwc->dib.hDC, pwc->hbmDIB);
+  
+  DeleteDC(hic);
+  
+  return;
+  
+}
+
+//---------------------------------------------------------------------------
+
+void wmCreatePalette( PWMC pwdc )
+{
+  /* Create a compressed and re-expanded 3:3:2 palette */
+  int            i;
+  LOGPALETTE     *pPal;
+  BYTE           rb, rs, gb, gs, bb, bs;
+  
+  pwdc->nColors = 0x100;
+  
+  pPal = (PLOGPALETTE)malloc(sizeof(LOGPALETTE) + 
+			     pwdc->nColors * sizeof(PALETTEENTRY));
+  memset( pPal, 0, sizeof(LOGPALETTE) + pwdc->nColors * sizeof(PALETTEENTRY) );
+  
+  pPal->palVersion = 0x300;
+  
+  rb = REDBITS;
+  rs = REDSHIFT;
+  gb = GREENBITS;
+  gs = GREENSHIFT;
+  bb = BLUEBITS;
+  bs = BLUESHIFT;
+  
+  if (pwdc->db_flag) {
+    
+    /* Need to make two palettes: one for the screen DC and one for the DIB. */
+    pPal->palNumEntries = pwdc->nColors;
+    for (i = 0; i < pwdc->nColors; i++) {
+      pPal->palPalEntry[i].peRed = componentFromIndex( i, rb, rs );
+      pPal->palPalEntry[i].peGreen = componentFromIndex( i, gb, gs );
+      pPal->palPalEntry[i].peBlue = componentFromIndex( i, bb, bs );
+      pPal->palPalEntry[i].peFlags = 0;
+    }
+    pwdc->hGLPalette = CreatePalette( pPal );
+    pwdc->hPalette = CreatePalette( pPal );
+  }
+  
+  else {
+    pPal->palNumEntries = pwdc->nColors;
+    for (i = 0; i < pwdc->nColors; i++) {
+      pPal->palPalEntry[i].peRed = componentFromIndex( i, rb, rs );
+      pPal->palPalEntry[i].peGreen = componentFromIndex( i, gb, gs );
+      pPal->palPalEntry[i].peBlue = componentFromIndex( i, bb, bs );
+      pPal->palPalEntry[i].peFlags = 0;
+    }
+    pwdc->hGLPalette = CreatePalette( pPal );
+  }
+  
+  free(pPal);
+  
+}
+
+//---------------------------------------------------------------------------
+
+/* This function sets the color table of a DIB section
+ * to match that of the destination DC
+ */
+BOOL wmSetDibColors(PWMC pwc)
+{
+  RGBQUAD         *pColTab, *pRGB;
+  PALETTEENTRY    *pPal, *pPE;
+  int             i, nColors;
+  BOOL            bRet=TRUE;
+  DWORD           dwErr=0;
+  
+  /* Build a color table in the DIB that maps to the
+   *  selected palette in the DC.
+   */
+  nColors = 1 << pwc->cColorBits;
+  pPal = (PALETTEENTRY *)malloc( nColors * sizeof(PALETTEENTRY));
+  memset( pPal, 0, nColors * sizeof(PALETTEENTRY) );
+  GetPaletteEntries( pwc->hGLPalette, 0, nColors, pPal );
+  pColTab = (RGBQUAD *)malloc( nColors * sizeof(RGBQUAD));
+  for (i = 0, pRGB = pColTab, pPE = pPal; i < nColors; i++, pRGB++, pPE++) {
+    pRGB->rgbRed = pPE->peRed;
+    pRGB->rgbGreen = pPE->peGreen;
+    pRGB->rgbBlue = pPE->peBlue;
+  }
+  if(pwc->db_flag)
+    bRet = SetDIBColorTable(pwc->dib.hDC, 0, nColors, pColTab );
+  
+  if(!bRet)
+    dwErr = GetLastError();
+  
+  free( pColTab );
+  free( pPal );
+  
+  return bRet;
+}
+
+//---------------------------------------------------------------------------
+
+static void wmSetPixelFormat( PWMC wc, HDC hDC)
+{
+  if(wc->rgb_flag)
+    wc->cColorBits = GetDeviceCaps(hDC, BITSPIXEL);
+  else
+    wc->cColorBits = 8;
+  switch(wc->cColorBits){
+  case 8:
+    if(wc->dither_flag != GL_TRUE)
+      wc->pixelformat = PF_INDEX8;
+    else
+      wc->pixelformat = PF_DITHER8;
+    break;
+  case 16:
+    wc->pixelformat = PF_5R6G5B;
+    break;
+  case 32:
+    wc->pixelformat = PF_8R8G8B;
+    break;
+  default:
+    wc->pixelformat = PF_BADFORMAT;
+  }
+}
+
+//---------------------------------------------------------------------------
+
+/*
+ * This function creates the DIB section that is used for combined
+ * GL and GDI calls
+ */
+BOOL wmCreateBackingStore(PWMC pwc, long lxSize, long lySize)
+{
+  HDC hdc = pwc->hDC;
+  LPBITMAPINFO pbmi = &(pwc->bmi);
+  int     iUsage;
+  
+  pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+  pbmi->bmiHeader.biWidth = lxSize;
+  pbmi->bmiHeader.biHeight= -lySize;
+  pbmi->bmiHeader.biPlanes = 1;
+  if(pwc->rgb_flag)
+    pbmi->bmiHeader.biBitCount = GetDeviceCaps(pwc->hDC, BITSPIXEL);
+  else
+    pbmi->bmiHeader.biBitCount = 8;
+  pbmi->bmiHeader.biCompression = BI_RGB;
+  pbmi->bmiHeader.biSizeImage = 0;
+  pbmi->bmiHeader.biXPelsPerMeter = 0;
+  pbmi->bmiHeader.biYPelsPerMeter = 0;
+  pbmi->bmiHeader.biClrUsed = 0;
+  pbmi->bmiHeader.biClrImportant = 0;
+  
+  iUsage = (pbmi->bmiHeader.biBitCount <= 8) ? DIB_PAL_COLORS : DIB_RGB_COLORS;
+
+  pwc->cColorBits = pbmi->bmiHeader.biBitCount;
+  pwc->ScanWidth = pwc->pitch = lxSize;
+  pwc->width = lxSize;
+  pwc->height = lySize;
+  
+  wmCreateDIBSection(hdc, pwc, pbmi, iUsage);
+  
+  if ((iUsage == DIB_PAL_COLORS) && !(pwc->hGLPalette)) {
+    wmCreatePalette( pwc );
+    wmSetDibColors( pwc );
+  }
+  wmSetPixelFormat(pwc, pwc->hDC);
+  return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+/*
+ * Free up the dib section that was created
+ */
+BOOL wmDeleteBackingStore(PWMC pwc)
+{
+  SelectObject(pwc->dib.hDC, pwc->hOldBitmap);
+  DeleteDC(pwc->dib.hDC);
+  DeleteObject(pwc->hbmDIB);
+  UnmapViewOfFile(pwc->dib.base);
+  CloseHandle(pwc->dib.hFileMap);
+  return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+/*
+ * Blit memory DC to screen DC
+ */
+BOOL wmFlush(PWMC pwc, HDC hDC)
+{
+  BOOL    bRet = 0;
+  DWORD   dwErr = 0;
+  
+// Now using bEmulateSingleBuffer in the calling function. KeithH
+
+//  if(pwc->db_flag){
+    bRet = BitBlt(hDC, 0, 0, pwc->width, pwc->height,
+		  pwc->dib.hDC, 0, 0, SRCCOPY);
+//  }
+  
+  return bRet;
+  
+}
+
+//---------------------------------------------------------------------------
+// Support Functions
+//---------------------------------------------------------------------------
+
+static void flush(GLcontext* ctx)
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+/*
+  if((Current->rgb_flag &&!(Current->db_flag))
+     ||(!Current->rgb_flag))
+    {
+      wmFlush(Current, Current->hDC);
+    }
+*/
+	// Only flush if we're not in double-buffer mode. KeithH
+	// The demo fractal.c calls glutSwapBuffers() then glFlush()!
+	if (Current->bEmulateSingleBuffer) {
+		wmFlush(Current, Current->hDC);
+	}
+}
+
+
+//---------------------------------------------------------------------------
+
+
+/*
+ * Set the color index used to clear the color buffer.
+ */
+static void clear_index(GLcontext* ctx, GLuint index)
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  Current->clearpixel = index;
+}
+
+
+
+//---------------------------------------------------------------------------
+
+/*
+ * Set the color used to clear the color buffer.
+ */
+//static void clear_color( GLcontext* ctx, const GLchan color[4] )
+// Changed for Mesa 5.x. KeithH
+static void clear_color(
+	GLcontext* ctx,
+	const GLfloat color[4])
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+	GLubyte col[4];
+	CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]);
+	CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]);
+	CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]);
+	Current->clearpixel = RGB(col[0], col[1], col[2]);
+}
+
+
+//---------------------------------------------------------------------------
+
+
+/*
+ * Clear the specified region of the color buffer using the clear color
+ * or index as specified by one of the two functions above.
+ *
+ * This procedure clears either the front and/or the back COLOR buffers.
+ * Only the "left" buffer is cleared since we are not stereo.
+ * Clearing of the other non-color buffers is left to the swrast.
+ * We also only clear the color buffers if the color masks are all 1's.
+ * Otherwise, we let swrast do it.
+ */
+
+static clear(GLcontext* ctx, GLbitfield mask,
+	     GLboolean all, GLint x, GLint y, GLint width, GLint height)
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  DWORD   dwColor;
+  WORD    wColor;
+  BYTE    bColor;
+  LPDWORD lpdw = (LPDWORD)Current->pbPixels;
+  LPWORD  lpw = (LPWORD)Current->pbPixels;
+  LPBYTE  lpb = Current->pbPixels;
+  int     lines;
+  const   GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
+  
+  if (all){
+    x=y=0;
+    width=Current->width;
+    height=Current->height;
+  }
+  
+  
+  /* sanity check - can't have right(stereo) buffers */
+  assert((mask & (DD_FRONT_RIGHT_BIT | DD_BACK_RIGHT_BIT)) == 0);
+  
+  /* clear alpha */
+  if ((mask & (DD_FRONT_LEFT_BIT | DD_BACK_RIGHT_BIT)) &&
+      ctx->DrawBuffer->UseSoftwareAlphaBuffers &&
+      ctx->Color.ColorMask[ACOMP]) {
+      _mesa_clear_alpha_buffers( ctx );
+  }
+  
+  if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
+      if (mask & DD_BACK_LEFT_BIT) {
+	  /* Double-buffering - clear back buffer */
+	  UINT    nBypp = Current->cColorBits / 8;
+	  int     i = 0;
+	  int     iSize = 0;
+	  
+	  assert(Current->db_flag==GL_TRUE); /* we'd better be double buffer */
+	  if(nBypp ==1 ){
+	      iSize = Current->width/4;
+	      bColor  = BGR8(GetRValue(Current->clearpixel),
+			     GetGValue(Current->clearpixel),
+			     GetBValue(Current->clearpixel));
+	      wColor  = MAKEWORD(bColor,bColor);
+	      dwColor = MAKELONG(wColor, wColor);
+	  }
+	  if(nBypp == 2){
+	      iSize = Current->width / 2;
+	      wColor = BGR16(GetRValue(Current->clearpixel),
+			     GetGValue(Current->clearpixel),
+			     GetBValue(Current->clearpixel));
+	      dwColor = MAKELONG(wColor, wColor);
+	  }
+	  else if(nBypp == 4){
+	      iSize = Current->width;
+	      dwColor = BGR32(GetRValue(Current->clearpixel),
+			      GetGValue(Current->clearpixel),
+			      GetBValue(Current->clearpixel));
+	  }
+	  
+	  /* clear a line */
+	  while(i < iSize){
+	      *lpdw = dwColor;
+	      lpdw++;
+	      i++;
+	  }
+	  
+	  /* This is the 24bit case */
+	  if (nBypp == 3) {
+	      iSize = Current->width *3/4;
+	      dwColor = BGR24(GetRValue(Current->clearpixel),
+			      GetGValue(Current->clearpixel),
+			      GetBValue(Current->clearpixel));
+	      while(i < iSize){
+		  *lpdw = dwColor;
+		  lpb += nBypp;
+		  lpdw = (LPDWORD)lpb;
+		  i++;
+	      }
+	  }
+	  
+	  i = 0;
+	  if (stereo_flag)
+	      lines = height /2;
+	  else
+	      lines = height;
+	  /* copy cleared line to other lines in buffer */
+	  do {
+	      memcpy(lpb, Current->pbPixels, iSize*4);
+	      lpb += Current->ScanWidth;
+	      i++;
+	  }
+	  while (i<lines-1);
+	  mask &= ~DD_BACK_LEFT_BIT;
+      } /* double-buffer */
+      
+      if (mask & DD_FRONT_LEFT_BIT) {
+	  /* single-buffer */
+	  HDC DC=DD_GETDC;
+	  HPEN Pen=CreatePen(PS_SOLID,1,Current->clearpixel);
+	  HBRUSH Brush=CreateSolidBrush(Current->clearpixel);
+	  HPEN Old_Pen=SelectObject(DC,Pen);
+	  HBRUSH Old_Brush=SelectObject(DC,Brush);
+	  Rectangle(DC,x,y,x+width,y+height);
+	  SelectObject(DC,Old_Pen);
+	  SelectObject(DC,Old_Brush);
+	  DeleteObject(Pen);
+	  DeleteObject(Brush);
+	  DD_RELEASEDC;
+	  mask &= ~DD_FRONT_LEFT_BIT;
+      } /* single-buffer */
+  } /* if masks are all 1's */
+    
+  /* Call swrast if there is anything left to clear (like DEPTH) */
+  if (mask)
+      _swrast_Clear( ctx, mask, all, x, y, width, height );
+}
+  
+
+//---------------------------------------------------------------------------
+
+
+static void enable( GLcontext* ctx, GLenum pname, GLboolean enable )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+
+	if (!Current)
+		return;
+	
+	if (pname == GL_DITHER) {
+		if(enable == GL_FALSE){
+			Current->dither_flag = GL_FALSE;
+			if(Current->cColorBits == 8)
+				Current->pixelformat = PF_INDEX8;
+		}
+		else{
+			if (Current->rgb_flag && Current->cColorBits == 8){
+				Current->pixelformat = PF_DITHER8;
+				Current->dither_flag = GL_TRUE;
+			}
+			else
+				Current->dither_flag = GL_FALSE;
+		}
+	}
+}
+
+//---------------------------------------------------------------------------
+
+static GLboolean set_draw_buffer( GLcontext* ctx, GLenum mode )
+{
+  /* TODO: this could be better */
+  if (mode==GL_FRONT_LEFT || mode==GL_BACK_LEFT) {
+    return GL_TRUE;
+  }
+  else {
+    return GL_FALSE;
+  }
+}
+
+//---------------------------------------------------------------------------
+
+
+static void set_read_buffer(GLcontext *ctx, GLframebuffer *colorBuffer,
+                            GLenum buffer )
+{
+  /* XXX todo */
+  return;
+}
+
+
+//---------------------------------------------------------------------------
+
+
+/* Return characteristics of the output buffer. */
+//static void buffer_size( GLcontext* ctx, GLuint *width, GLuint *height )
+// Altered for Mesa 5.x. KeithH
+static void buffer_size(
+	GLframebuffer *buffer,
+	GLuint *width,
+	GLuint *height)
+{
+	// For some reason the context is not passed into this function.
+	// Therefore we have to explicitly retrieve it.
+	GET_CURRENT_CONTEXT(ctx);
+
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+	int New_Size;
+	RECT CR;
+	
+	GetClientRect(Current->Window,&CR);
+	
+	*width=CR.right;
+	*height=CR.bottom;
+	
+	New_Size=((*width)!=Current->width) || ((*height)!=Current->height);
+	
+	if (New_Size){
+		Current->width=*width;
+		Current->height=*height;
+		Current->ScanWidth=Current->width;
+		if ((Current->ScanWidth%sizeof(long))!=0)
+			Current->ScanWidth+=(sizeof(long)-(Current->ScanWidth%sizeof(long)));
+		
+		if (Current->db_flag){
+			if (Current->rgb_flag==GL_TRUE && Current->dither_flag!=GL_TRUE){
+				wmDeleteBackingStore(Current);
+				wmCreateBackingStore(Current, Current->width, Current->height);
+			}
+		}
+		
+	}
+}
+
+
+
+/**********************************************************************/
+/*****           Accelerated point, line, polygon rendering       *****/
+/**********************************************************************/
+
+/* Accelerated routines are not implemented in 4.0. See OSMesa for ideas. */
+
+static void fast_rgb_points( GLcontext* ctx, GLuint first, GLuint last )
+{
+}
+
+//---------------------------------------------------------------------------
+
+/* Return pointer to accelerated points function */
+extern points_func choose_points_function( GLcontext* ctx )
+{
+  return NULL;
+}
+
+//---------------------------------------------------------------------------
+
+static void fast_flat_rgb_line( GLcontext* ctx, GLuint v0, 
+				GLuint v1, GLuint pv )
+{
+}
+
+//---------------------------------------------------------------------------
+
+static line_func choose_line_function( GLcontext* ctx )
+{
+}
+
+
+/**********************************************************************/
+/*****                 Span-based pixel drawing                   *****/
+/**********************************************************************/
+
+
+/* Write a horizontal span of 32-bit color-index pixels with a boolean mask. */
+static void write_ci32_span( const GLcontext* ctx,
+                             GLuint n, GLint x, GLint y,
+                             const GLuint index[],
+                             const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  PBYTE Mem=Current->ScreenMem+FLIP(y)*Current->ScanWidth+x;
+  assert(Current->rgb_flag==GL_FALSE);
+  for (i=0; i<n; i++)
+    if (mask[i])
+      Mem[i]=index[i];
+}
+
+
+//---------------------------------------------------------------------------
+
+/* Write a horizontal span of 8-bit color-index pixels with a boolean mask. */
+static void write_ci8_span( const GLcontext* ctx,
+                            GLuint n, GLint x, GLint y,
+                            const GLubyte index[],
+                            const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  PBYTE Mem=Current->ScreenMem+FLIP(y)*Current->ScanWidth+x;
+  assert(Current->rgb_flag==GL_FALSE);
+  for (i=0; i<n; i++)
+    if (mask[i])
+      Mem[i]=index[i];
+}
+
+
+//---------------------------------------------------------------------------
+
+
+/*
+ * Write a horizontal span of pixels with a boolean mask.  The current
+ * color index is used for all pixels.
+ */
+static void write_mono_ci_span(const GLcontext* ctx,
+                               GLuint n,GLint x,GLint y,
+                               GLuint colorIndex, const GLubyte mask[])
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  BYTE *Mem=Current->ScreenMem+FLIP(y)*Current->ScanWidth+x;
+  assert(Current->rgb_flag==GL_FALSE);
+  for (i=0; i<n; i++)
+    if (mask[i])
+      Mem[i]=colorIndex;
+}
+
+//---------------------------------------------------------------------------
+
+/*
+ * To improve the performance of this routine, frob the data into an actual
+ * scanline and call bitblt on the complete scan line instead of SetPixel.
+ */
+
+/* Write a horizontal span of RGBA color pixels with a boolean mask. */
+static void write_rgba_span( const GLcontext* ctx, GLuint n, GLint x, GLint y,
+                             const GLubyte rgba[][4], const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  PWMC    pwc = Current;
+  
+  if (pwc->rgb_flag==GL_TRUE)
+    {
+      GLuint i;
+      HDC DC=DD_GETDC;
+      y=FLIP(y);
+      if (mask) {
+	for (i=0; i<n; i++)
+	  if (mask[i])
+	    wmSetPixel(pwc, y, x + i, 
+		       rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
+      }
+      else {
+	for (i=0; i<n; i++)
+	  wmSetPixel(pwc, y, x + i, 
+		     rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
+      }
+      DD_RELEASEDC;
+    }
+  else
+    {
+      GLuint i;
+      BYTE *Mem=Current->ScreenMem+y*Current->ScanWidth+x;
+      y = FLIP(y);
+      if (mask) {
+	for (i=0; i<n; i++)
+	  if (mask[i])
+	    Mem[i] = GetNearestPaletteIndex(Current->hPal, 
+					    RGB(rgba[i][RCOMP], 
+						rgba[i][GCOMP], 
+						rgba[i][BCOMP]));
+      }
+      else {
+	for (i=0; i<n; i++)
+	  Mem[i] = GetNearestPaletteIndex(Current->hPal,
+					  RGB(rgba[i][RCOMP], 
+					      rgba[i][GCOMP], 
+					      rgba[i][BCOMP]));
+      }
+    }
+}
+
+//---------------------------------------------------------------------------
+
+/* Write a horizontal span of RGB color pixels with a boolean mask. */
+static void write_rgb_span( const GLcontext* ctx,
+                            GLuint n, GLint x, GLint y,
+                            const GLubyte rgb[][3], const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  PWMC    pwc = Current;
+  
+  if (pwc->rgb_flag==GL_TRUE)
+    {
+      GLuint i;
+      HDC DC=DD_GETDC;
+      y=FLIP(y);
+      if (mask) {
+	for (i=0; i<n; i++)
+	  if (mask[i])
+	    wmSetPixel(pwc, y, x + i, 
+		       rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
+      }
+      else {
+	for (i=0; i<n; i++)
+	  wmSetPixel(pwc, y, x + i, 
+		     rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
+      }
+      DD_RELEASEDC;
+    }
+  else
+    {
+      GLuint i;
+      BYTE *Mem=Current->ScreenMem+y*Current->ScanWidth+x;
+      y = FLIP(y);
+      if (mask) {
+	for (i=0; i<n; i++)
+	  if (mask[i])
+	    Mem[i] = GetNearestPaletteIndex(Current->hPal,
+					    RGB(rgb[i][RCOMP], 
+						rgb[i][GCOMP], 
+						rgb[i][BCOMP]));
+      }
+      else {
+	for (i=0; i<n; i++)
+	  Mem[i] = GetNearestPaletteIndex(Current->hPal,
+					  RGB(rgb[i][RCOMP], 
+					      rgb[i][GCOMP], 
+					      rgb[i][BCOMP]));
+      }
+    }
+}
+
+//---------------------------------------------------------------------------
+
+/*
+ * Write a horizontal span of pixels with a boolean mask.  The current color
+ * is used for all pixels.
+ */
+static void write_mono_rgba_span( const GLcontext* ctx,
+                                  GLuint n, GLint x, GLint y,
+                                  const GLchan color[4], const GLubyte mask[])
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  ULONG pixel =  RGB( color[RCOMP], color[GCOMP], color[BCOMP] );
+  GLuint i;
+  HDC DC=DD_GETDC;
+  PWMC pwc = Current;
+  assert(Current->rgb_flag==GL_TRUE);
+  y=FLIP(y);
+  if(Current->rgb_flag==GL_TRUE){
+    for (i=0; i<n; i++)
+      if (mask[i])
+	wmSetPixel(pwc,y,x+i,color[RCOMP], color[GCOMP], color[BCOMP]);
+  }
+  else {
+    for (i=0; i<n; i++)
+      if (mask[i])
+	SetPixel(DC, y, x+i, pixel);
+  }
+  DD_RELEASEDC;
+}
+
+
+
+/**********************************************************************/
+/*****                   Array-based pixel drawing                *****/
+/**********************************************************************/
+
+
+/* Write an array of 32-bit index pixels with a boolean mask. */
+static void write_ci32_pixels( const GLcontext* ctx,
+                               GLuint n, const GLint x[], const GLint y[],
+                               const GLuint index[], const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  assert(Current->rgb_flag==GL_FALSE);
+  for (i=0; i<n; i++) {
+    if (mask[i]) {
+      BYTE *Mem=Current->ScreenMem+FLIP(y[i])*Current->ScanWidth+x[i];
+      *Mem = index[i];
+    }
+  }
+}
+
+
+//---------------------------------------------------------------------------
+
+
+/*
+ * Write an array of pixels with a boolean mask.  The current color
+ * index is used for all pixels.
+ */
+static void write_mono_ci_pixels( const GLcontext* ctx,
+                                  GLuint n,
+                                  const GLint x[], const GLint y[],
+                                  GLuint colorIndex, const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  assert(Current->rgb_flag==GL_FALSE);
+  for (i=0; i<n; i++) {
+    if (mask[i]) {
+      BYTE *Mem=Current->ScreenMem+FLIP(y[i])*Current->ScanWidth+x[i];
+      *Mem = colorIndex;
+    }
+  }
+}
+
+
+//---------------------------------------------------------------------------
+
+
+/* Write an array of RGBA pixels with a boolean mask. */
+static void write_rgba_pixels( const GLcontext* ctx,
+                               GLuint n, const GLint x[], const GLint y[],
+                               const GLubyte rgba[][4], const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  PWMC    pwc = Current;
+  HDC DC=DD_GETDC;
+  assert(Current->rgb_flag==GL_TRUE);
+  for (i=0; i<n; i++)
+    if (mask[i])
+      wmSetPixel(pwc, FLIP(y[i]), x[i],
+		 rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
+  DD_RELEASEDC;
+}
+
+
+//---------------------------------------------------------------------------
+
+
+/*
+ * Write an array of pixels with a boolean mask.  The current color
+ * is used for all pixels.
+ */
+static void write_mono_rgba_pixels( const GLcontext* ctx,
+                                    GLuint n,
+                                    const GLint x[], const GLint y[],
+                                    const GLchan color[4],
+                                    const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  PWMC    pwc = Current;
+  HDC DC=DD_GETDC;
+  assert(Current->rgb_flag==GL_TRUE);
+  for (i=0; i<n; i++)
+    if (mask[i])
+      wmSetPixel(pwc, FLIP(y[i]),x[i],color[RCOMP],
+		 color[GCOMP], color[BCOMP]);
+  DD_RELEASEDC;
+}
+
+/**********************************************************************/
+/*****            Read spans/arrays of pixels                     *****/
+/**********************************************************************/
+
+/* Read a horizontal span of color-index pixels. */
+static void read_ci32_span( const GLcontext* ctx, GLuint n, GLint x, GLint y,
+                            GLuint index[])
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  BYTE *Mem=Current->ScreenMem+FLIP(y)*Current->ScanWidth+x;
+  assert(Current->rgb_flag==GL_FALSE);
+  for (i=0; i<n; i++)
+    index[i]=Mem[i];
+}
+
+//---------------------------------------------------------------------------
+
+/* Read an array of color index pixels. */
+static void read_ci32_pixels( const GLcontext* ctx,
+                              GLuint n, const GLint x[], const GLint y[],
+                              GLuint indx[], const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  assert(Current->rgb_flag==GL_FALSE);
+  for (i=0; i<n; i++) {
+    if (mask[i]) {
+      indx[i]=*(Current->ScreenMem+FLIP(y[i])*Current->ScanWidth+x[i]);
+    }
+  }
+}
+
+//---------------------------------------------------------------------------
+
+/* Read a horizontal span of color pixels. */
+static void read_rgba_span( const GLcontext* ctx,
+                            GLuint n, GLint x, GLint y,
+                            GLubyte rgba[][4] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  UINT i;
+  COLORREF Color;
+  HDC DC=DD_GETDC;
+  assert(Current->rgb_flag==GL_TRUE);
+  y = Current->height - y - 1;
+  for (i=0; i<n; i++) {
+    Color=GetPixel(DC,x+i,y);
+    rgba[i][RCOMP] = GetRValue(Color);
+    rgba[i][GCOMP] = GetGValue(Color);
+    rgba[i][BCOMP] = GetBValue(Color);
+    rgba[i][ACOMP] = 255;
+  }
+  DD_RELEASEDC;
+}
+
+//---------------------------------------------------------------------------
+
+/* Read an array of color pixels. */
+static void read_rgba_pixels( const GLcontext* ctx,
+                              GLuint n, const GLint x[], const GLint y[],
+                              GLubyte rgba[][4], const GLubyte mask[] )
+{
+	GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
+	WMesaContext *Current = GLD_GET_WMESA_DRIVER(gldCtx);
+  GLuint i;
+  COLORREF Color;
+  HDC DC=DD_GETDC;
+  assert(Current->rgb_flag==GL_TRUE);
+  for (i=0; i<n; i++) {
+    if (mask[i]) {
+      GLint y2 = Current->height - y[i] - 1;
+      Color=GetPixel(DC,x[i],y2);
+      rgba[i][RCOMP] = GetRValue(Color);
+      rgba[i][GCOMP] = GetGValue(Color);
+      rgba[i][BCOMP] = GetBValue(Color);
+      rgba[i][ACOMP] = 255;
+    }
+  }
+  DD_RELEASEDC;
+}
+
+//---------------------------------------------------------------------------
+
+static void wmesa_update_state(
+	GLcontext *ctx,
+	GLuint new_state)
+{
+    _swrast_InvalidateState( ctx, new_state );
+	_swsetup_InvalidateState( ctx, new_state );
+	_ac_InvalidateState( ctx, new_state );
+	_tnl_InvalidateState( ctx, new_state );
+}
+
+//---------------------------------------------------------------------------
+
+static void wmesa_viewport(
+	GLcontext *ctx,
+	GLint x,
+	GLint y,
+	GLsizei w,
+	GLsizei h)
+{
+//	ctx->Driver.ResizeBuffersMESA(ctx);
+}
+
+//---------------------------------------------------------------------------
+
+static void wmesa_update_state_first_time(
+	GLcontext *ctx,
+	GLuint new_state)
+{
+	struct swrast_device_driver	*swdd = _swrast_GetDeviceDriverReference( ctx );
+	TNLcontext					*tnl = TNL_CONTEXT(ctx);
+	
+	/*
+	* XXX these function pointers could be initialized just once during
+	* context creation since they don't depend on any state changes.
+	* kws - This is true - this function gets called a lot and it
+	* would be good to minimize setting all this when not needed.
+	*/
+	// Good idea, so I'll do it. KeithH. :-)
+
+	ctx->Driver.GetString				= _gldGetStringGeneric;
+	ctx->Driver.UpdateState				= wmesa_update_state;
+	ctx->Driver.DrawBuffer				= set_draw_buffer;
+	ctx->Driver.ResizeBuffers			= _swrast_alloc_buffers;
+	ctx->Driver.GetBufferSize			= buffer_size;
+
+	ctx->Driver.Viewport				= wmesa_viewport;
+	
+	ctx->Driver.Accum					= _swrast_Accum;
+	ctx->Driver.Bitmap					= _swrast_Bitmap;
+	ctx->Driver.Clear					= clear;
+	
+	ctx->Driver.Flush					= flush;
+	ctx->Driver.ClearIndex				= clear_index;
+	ctx->Driver.ClearColor				= clear_color;
+	ctx->Driver.Enable					= enable;
+	
+	ctx->Driver.CopyPixels				= _swrast_CopyPixels;
+	ctx->Driver.DrawPixels				= _swrast_DrawPixels;
+	ctx->Driver.ReadPixels				= _swrast_ReadPixels;
+	
+	ctx->Driver.ChooseTextureFormat		= _mesa_choose_tex_format;
+	ctx->Driver.TexImage1D				= _mesa_store_teximage1d;
+	ctx->Driver.TexImage2D				= _mesa_store_teximage2d;
+	ctx->Driver.TexImage3D				= _mesa_store_teximage3d;
+	ctx->Driver.TexSubImage1D			= _mesa_store_texsubimage1d;
+	ctx->Driver.TexSubImage2D			= _mesa_store_texsubimage2d;
+	ctx->Driver.TexSubImage3D			= _mesa_store_texsubimage3d;
+	ctx->Driver.TestProxyTexImage		= _mesa_test_proxy_teximage;
+	
+	ctx->Driver.CopyTexImage1D			= _swrast_copy_teximage1d;
+	ctx->Driver.CopyTexImage2D			= _swrast_copy_teximage2d;
+	ctx->Driver.CopyTexSubImage1D		= _swrast_copy_texsubimage1d;
+	ctx->Driver.CopyTexSubImage2D		= _swrast_copy_texsubimage2d;
+	ctx->Driver.CopyTexSubImage3D		= _swrast_copy_texsubimage3d;
+	ctx->Driver.CopyColorTable			= _swrast_CopyColorTable;
+	ctx->Driver.CopyColorSubTable		= _swrast_CopyColorSubTable;
+	ctx->Driver.CopyConvolutionFilter1D	= _swrast_CopyConvolutionFilter1D;
+	ctx->Driver.CopyConvolutionFilter2D	= _swrast_CopyConvolutionFilter2D;
+	
+	// Does not apply for Mesa 5.x
+	//ctx->Driver.BaseCompressedTexFormat	= _mesa_base_compressed_texformat;
+	//ctx->Driver.CompressedTextureSize	= _mesa_compressed_texture_size;
+	//ctx->Driver.GetCompressedTexImage	= _mesa_get_compressed_teximage;
+	
+	swdd->SetBuffer					= set_read_buffer;
+	
+	
+	/* Pixel/span writing functions: */
+	swdd->WriteRGBASpan        = write_rgba_span;
+	swdd->WriteRGBSpan         = write_rgb_span;
+	swdd->WriteMonoRGBASpan    = write_mono_rgba_span;
+	swdd->WriteRGBAPixels      = write_rgba_pixels;
+	swdd->WriteMonoRGBAPixels  = write_mono_rgba_pixels;
+	swdd->WriteCI32Span        = write_ci32_span;
+	swdd->WriteCI8Span         = write_ci8_span;
+	swdd->WriteMonoCISpan      = write_mono_ci_span;
+	swdd->WriteCI32Pixels      = write_ci32_pixels;
+	swdd->WriteMonoCIPixels    = write_mono_ci_pixels;
+	
+	swdd->ReadCI32Span        = read_ci32_span;
+	swdd->ReadRGBASpan        = read_rgba_span;
+	swdd->ReadCI32Pixels      = read_ci32_pixels;
+	swdd->ReadRGBAPixels      = read_rgba_pixels;
+	
+	
+	tnl->Driver.RunPipeline = _tnl_run_pipeline;
+	
+	wmesa_update_state(ctx, new_state);
+}
+
+//---------------------------------------------------------------------------
+// Driver interface functions
+//---------------------------------------------------------------------------
+
+BOOL gldCreateDrawable_MesaSW(
+	DGL_ctx *pCtx,
+	BOOL bPersistantInterface,
+	BOOL bPersistantBuffers)
+{
+	WMesaContext *c;
+	GLboolean true_color_flag;
+	GLboolean rgb_flag = GL_TRUE;
+	GLboolean db_flag = GL_TRUE;
+
+	if (pCtx == NULL)
+		return FALSE;
+
+	c = (struct wmesa_context * ) calloc(1,sizeof(struct wmesa_context));
+	if (!c)
+		return FALSE;
+
+	pCtx->glPriv = c;
+
+	c->hDC		= pCtx->hDC;
+	c->Window	= pCtx->hWnd;
+
+	true_color_flag = GetDeviceCaps(pCtx->hDC, BITSPIXEL) > 8;
+	
+	
+#ifdef DITHER
+	if ((true_color_flag==GL_FALSE) && (rgb_flag == GL_TRUE)){
+		c->dither_flag = GL_TRUE;
+		c->hPalHalfTone = WinGCreateHalftonePalette();
+	}
+	else
+		c->dither_flag = GL_FALSE;
+#else
+	c->dither_flag = GL_FALSE;
+#endif
+	
+	
+	if (rgb_flag==GL_FALSE)
+    {
+		c->rgb_flag = GL_FALSE;
+#if 0
+		/* Old WinG stuff???? */
+		c->db_flag = db_flag =GL_TRUE; /* WinG requires double buffering */
+		printf("Single buffer is not supported in color index mode, ",
+			"setting to double buffer.\n");
+#endif
+    }
+	else
+    {
+		c->rgb_flag = GL_TRUE;
+    }
+
+//	db_flag = pCtx->lpPF->pfd.dwFlags & PFD_DOUBLEBUFFER ? GL_TRUE : GL_FALSE;
+	db_flag = GL_TRUE; // Force double-buffer
+	if (db_flag) {
+		c->db_flag = 1;
+		/* Double buffered */
+		{
+			wmCreateBackingStore(c, pCtx->dwWidth, pCtx->dwHeight);
+			
+		}
+    } else {
+		/* Single Buffered */
+		if (c->rgb_flag)
+			c->db_flag = 0;
+    }	
+
+	c->bEmulateSingleBuffer = (pCtx->lpPF->pfd.dwFlags & PFD_DOUBLEBUFFER)
+		? FALSE : TRUE;
+
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldResizeDrawable_MesaSW(
+	DGL_ctx *ctx,
+	BOOL bDefaultDriver,
+	BOOL bPersistantInterface,
+	BOOL bPersistantBuffers)
+{
+	WMesaContext *c;
+
+	if (ctx == NULL)
+		return FALSE;
+
+	c = ctx->glPriv;
+	if (c == NULL)
+		return FALSE;
+
+	c->hDC = ctx->hDC;
+	c->Window = ctx->hWnd;
+//	c->width = ctx->dwWidth;
+//	c->height = ctx->dwHeight;
+
+	if (c->db_flag) {
+		wmDeleteBackingStore(c);
+		wmCreateBackingStore(c, ctx->dwWidth, ctx->dwHeight);
+	}
+
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldDestroyDrawable_MesaSW(
+	DGL_ctx *ctx)
+{
+	WMesaContext *c;
+
+	if (ctx == NULL)
+		return FALSE;
+
+	c = ctx->glPriv;
+	if (c == NULL)
+		return FALSE;
+
+	if (c->hPalHalfTone != NULL)
+		DeleteObject(c->hPalHalfTone);
+    
+	if (c->db_flag)
+		wmDeleteBackingStore(c);
+
+	free(c);
+
+	ctx->glPriv = NULL;
+
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldCreatePrivateGlobals_MesaSW(void)
+{
+	// Mesa Software driver needs no private globals
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldDestroyPrivateGlobals_MesaSW(void)
+{
+	// Mesa Software driver needs no private globals
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldBuildPixelformatList_MesaSW(void)
+{
+	// Release any existing pixelformat list
+	if (glb.lpPF) {
+		free(glb.lpPF);
+	}
+
+	glb.nPixelFormatCount	= 0;
+	glb.lpPF				= NULL;
+
+	glb.lpPF = (DGL_pixelFormat *)calloc(2, sizeof(DGL_pixelFormat));
+	if (glb.lpPF == NULL)
+		return FALSE;
+	// Single-buffered
+	memcpy(&glb.lpPF[0], &pfTemplateMesaSW, sizeof(DGL_pixelFormat));
+	glb.lpPF[0].pfd.dwFlags &= ~PFD_DOUBLEBUFFER; // Remove doublebuffer flag
+	// Double-buffered
+	memcpy(&glb.lpPF[1], &pfTemplateMesaSW, sizeof(DGL_pixelFormat));
+	glb.nPixelFormatCount = 2;
+
+	// Mark list as 'current'
+	glb.bPixelformatsDirty = FALSE;
+
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldInitialiseMesa_MesaSW(
+	DGL_ctx *gld)
+{
+	GLcontext *ctx;
+
+	if (gld == NULL)
+		return FALSE;
+
+	ctx = gld->glCtx;
+
+	// Set max texture size to 256
+	ctx->Const.MaxTextureLevels = 8;
+
+	// Multitexture enable/disable
+	ctx->Const.MaxTextureUnits = (glb.bMultitexture) ? MAX_TEXTURE_UNITS : 1;
+
+	/* Initialize the software rasterizer and helper modules.*/
+
+	// Added this to force max texture diminsion to 256. KeithH
+	ctx->Const.MaxTextureLevels = 8;
+
+	_mesa_enable_sw_extensions(ctx);
+	_mesa_enable_imaging_extensions(ctx);
+	_mesa_enable_1_3_extensions(ctx);
+	
+//	_swrast_CreateContext( ctx );
+//	_ac_CreateContext( ctx );
+//	_tnl_CreateContext( ctx );
+//	_swsetup_CreateContext( ctx );
+	
+	_swsetup_Wakeup( ctx );
+	
+	wmesa_update_state_first_time(ctx, ~0);
+
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldSwapBuffers_MesaSW(
+	DGL_ctx *ctx,
+	HDC hDC,
+	HWND hWnd)
+{
+	WMesaContext *c;
+
+	if (ctx == NULL)
+		return FALSE;
+
+	c = ctx->glPriv;
+	if (c == NULL)
+		return FALSE;
+	
+	/* If we're swapping the buffer associated with the current context
+	* we have to flush any pending rendering commands first.
+	*/
+
+	// Altered to respect bEmulateSingleBuffer. KeithH
+//	if (c->db_flag)
+	if (!c->bEmulateSingleBuffer)
+		wmFlush(c, hDC);
+
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+
+PROC gldGetProcAddress_MesaSW(
+	LPCSTR a)
+{
+	int		i;
+	PROC	proc = NULL;
+
+	for (i=0; GLD_extList[i].proc; i++) {
+		if (!strcmp(a, GLD_extList[i].name)) {
+			proc = GLD_extList[i].proc;
+			break;
+		}
+	}
+
+	gldLogPrintf(GLDLOG_INFO, "GetProcAddress: %s (%s)", a, proc ? "OK" : "Failed");
+
+	return proc;
+}
+
+//---------------------------------------------------------------------------
+
+BOOL gldGetDisplayMode_MesaSW(
+	DGL_ctx *ctx,
+	GLD_displayMode *glddm)
+{
+	HDC hdcDesktop;
+
+	if (glddm == NULL)
+		return FALSE;
+
+	//
+	// A bit hacky... KeithH
+	//
+
+	hdcDesktop = GetDC(NULL);
+	glddm->Width	= GetDeviceCaps(hdcDesktop, HORZRES);
+	glddm->Height	= GetDeviceCaps(hdcDesktop, VERTRES);
+	glddm->BPP		= GetDeviceCaps(hdcDesktop, BITSPIXEL);
+	glddm->Refresh	= 0;
+	ReleaseDC(0, hdcDesktop);
+
+	return TRUE;
+}
+
+//---------------------------------------------------------------------------
+