remove carriage return chars

1 files changed, 645 insertions, 645 deletions

diff --git a/src/mesa/drivers/windows/wgl.c b/src/mesa/drivers/windows/wgl.c
index f7bf682016..0db57641fe 100644
--- a/src/mesa/drivers/windows/wgl.c
+++ b/src/mesa/drivers/windows/wgl.c
@@ -1,645 +1,645 @@
-/* $Id: wgl.c,v 1.8 2001/09/14 22:19:19 brianp Exp $ */

-

-/*

-* 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.

-*

-*/

-

-/*

-* File name 	: wgl.c

-* WGL stuff. Added by Oleg Letsinsky, ajl@ultersys.ru

-* Some things originated from the 3Dfx WGL functions

-*/

-

-#ifdef WIN32

-

-#ifdef __cplusplus

-extern "C" {

-#endif

-

-#include <windows.h>

-#define GL_GLEXT_PROTOTYPES

-#include <GL/gl.h>

-#include <GL/glext.h>

-//#include <GL/glu.h>

-

-#ifdef __cplusplus

-}

-#endif

-

-#include <stdio.h>

-#include <tchar.h>

-#include "wmesadef.h"

-#include "GL/wmesa.h"

-#include "mtypes.h"

-

-#define MAX_MESA_ATTRS	20

-

-struct __extensions__

-{

-    PROC	proc;

-    char	*name;

-};

-

-struct __pixelformat__

-{

-    PIXELFORMATDESCRIPTOR	pfd;

-    GLboolean doubleBuffered;

-};

-

-struct __extensions__	ext[] = {

-

-#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)glColorTableEXT,			"glColorTableEXT"		},

-   { (PROC)glColorSubTableEXT,			"glColorSubTableEXT"		},

-   { (PROC)glGetColorTableEXT,			"glGetColorTableEXT"		},

-   { (PROC)glGetColorTableParameterfvEXT,	"glGetColorTableParameterfvEXT"	},

-   { (PROC)glGetColorTableParameterivEXT,	"glGetColorTableParameterivEXT"	},

-   { (PROC)glPointParameterfEXT,		"glPointParameterfEXT"		},

-   { (PROC)glPointParameterfvEXT,		"glPointParameterfvEXT"		},

-   { (PROC)glBlendFuncSeparateEXT,		"glBlendFuncSeparateEXT"	},

-   { (PROC)glLockArraysEXT,			"glLockArraysEXT"		},

-   { (PROC)glUnlockArraysEXT,			"glUnlockArraysEXT"		}

-};

-

-int qt_ext = sizeof(ext) / sizeof(ext[0]);

-

-struct __pixelformat__	pix[] =

-{

-    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,

-        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT|PFD_DOUBLEBUFFER|PFD_SWAP_COPY,

-        PFD_TYPE_RGBA,

-        24,	8,	0,	8,	8,	8,	16,	8,	24,

-        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },

-        GL_TRUE

-    },

-    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,

-        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT,

-        PFD_TYPE_RGBA,

-        24,	8,	0,	8,	8,	8,	16,	8,	24,

-        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },

-        GL_FALSE

-    },

-};

-

-int				qt_pix = sizeof(pix) / sizeof(pix[0]);

-

-typedef struct {

-    WMesaContext ctx;

-    HDC hdc;

-} MesaWglCtx;

-

-#define MESAWGL_CTX_MAX_COUNT 20

-

-static MesaWglCtx wgl_ctx[MESAWGL_CTX_MAX_COUNT];

-

-static unsigned ctx_count = 0;

-static unsigned ctx_current = -1;

-static unsigned curPFD = 0;

-

-WGLAPI BOOL GLAPIENTRY wglCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask)

-{

-    return(FALSE);

-}

-

-WGLAPI HGLRC GLAPIENTRY wglCreateContext(HDC hdc)

-{

-    HWND		hWnd;

-    int i = 0;

-    if(!(hWnd = WindowFromDC(hdc)))

-    {

-        SetLastError(0);

-        return(NULL);

-    }

-    if (!ctx_count)

-    {

-    	for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++)

-    	{

-    		wgl_ctx[i].ctx = NULL;

-    		wgl_ctx[i].hdc = NULL;

-    	}

-    }

-    for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )

-    {

-        if ( wgl_ctx[i].ctx == NULL )

-        {

-            wgl_ctx[i].ctx = WMesaCreateContext( hWnd, NULL, GL_TRUE,

-                pix[curPFD-1].doubleBuffered );

-            if (wgl_ctx[i].ctx == NULL)

-                break;

-            wgl_ctx[i].hdc = hdc;

-            ctx_count++;

-            return ((HGLRC)wgl_ctx[i].ctx);

-        }

-    }

-    SetLastError(0);

-    return(NULL);

-}

-

-WGLAPI BOOL GLAPIENTRY wglDeleteContext(HGLRC hglrc)

-{

-    int i;

-    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )

-    {

-    	if ( wgl_ctx[i].ctx == (PWMC) hglrc )

-    	{

-            WMesaMakeCurrent((PWMC) hglrc);

-            WMesaDestroyContext();

-            wgl_ctx[i].ctx = NULL;

-            wgl_ctx[i].hdc = NULL;

-            ctx_count--;

-            return(TRUE);

-    	}

-    }

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI HGLRC GLAPIENTRY wglCreateLayerContext(HDC hdc,int iLayerPlane)

-{

-    SetLastError(0);

-    return(NULL);

-}

-

-WGLAPI HGLRC GLAPIENTRY wglGetCurrentContext(VOID)

-{

-   if (ctx_current < 0)

-      return 0;

-   else

-      return (HGLRC) wgl_ctx[ctx_current].ctx;

-}

-

-WGLAPI HDC GLAPIENTRY wglGetCurrentDC(VOID)

-{

-   if (ctx_current < 0)

-      return 0;

-   else

-      return wgl_ctx[ctx_current].hdc;

-}

-

-WGLAPI BOOL GLAPIENTRY wglMakeCurrent(HDC hdc,HGLRC hglrc)

-{

-    int i;

-

-    /* new code suggested by Andy Sy */

-    if (!hdc || !hglrc) {

-       WMesaMakeCurrent(NULL);

-       ctx_current = -1;

-       return TRUE;

-    }

-

-    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )

-    {

-        if ( wgl_ctx[i].ctx == (PWMC) hglrc )

-        {

-            wgl_ctx[i].hdc = hdc;

-            WMesaMakeCurrent( (WMesaContext) hglrc );

-            ctx_current = i;

-            return TRUE;

-        }

-    }

-    return FALSE;

-}

-

-WGLAPI BOOL GLAPIENTRY wglShareLists(HGLRC hglrc1,HGLRC hglrc2)

-{

-    return(TRUE);

-}

-

-

-static FIXED FixedFromDouble(double d)

-{

-   long l = (long) (d * 65536L);

-   return *(FIXED *)&l;

-}

-

-

-/*

-** This is cribbed from FX/fxwgl.c, and seems to implement support

-** for bitmap fonts where the wglUseFontBitmapsA() code implements

-** support for outline fonts.  In combination they hopefully give

-** fairly generic support for fonts.

-*/

-static BOOL wglUseFontBitmaps_FX(HDC fontDevice, DWORD firstChar,

-                                 DWORD numChars, DWORD listBase)

-{

-#define VERIFY(a) a

-

-  TEXTMETRIC metric;

-  BITMAPINFO *dibInfo;

-  HDC bitDevice;

-  COLORREF tempColor;

-  int i;

-

-  VERIFY(GetTextMetrics(fontDevice, &metric));

-

-  dibInfo = (BITMAPINFO *) calloc(sizeof(BITMAPINFO) + sizeof(RGBQUAD), 1);

-  dibInfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

-  dibInfo->bmiHeader.biPlanes = 1;

-  dibInfo->bmiHeader.biBitCount = 1;

-  dibInfo->bmiHeader.biCompression = BI_RGB;

-

-  bitDevice = CreateCompatibleDC(fontDevice);

-  // HDC bitDevice = CreateDC("DISPLAY", NULL, NULL, NULL);

-  // VERIFY(bitDevice);

-

-  // Swap fore and back colors so the bitmap has the right polarity

-  tempColor = GetBkColor(bitDevice);

-  SetBkColor(bitDevice, GetTextColor(bitDevice));

-  SetTextColor(bitDevice, tempColor);

-

-  // Place chars based on base line

-  VERIFY(SetTextAlign(bitDevice, TA_BASELINE) >= 0 ? 1 : 0);

-

-  for(i = 0; i < numChars; i++) {

-    SIZE size;

-    char curChar;

-    int charWidth,charHeight,bmapWidth,bmapHeight,numBytes,res;

-    HBITMAP bitObject;

-    HGDIOBJ origBmap;

-    unsigned char *bmap;

-

-    curChar = i + firstChar;

-

-    // Find how high/wide this character is

-    VERIFY(GetTextExtentPoint32(bitDevice, &curChar, 1, &size));

-

-    // Create the output bitmap

-    charWidth = size.cx;

-    charHeight = size.cy;

-    bmapWidth = ((charWidth + 31) / 32) * 32;   // Round up to the next multiple of 32 bits

-    bmapHeight = charHeight;

-    bitObject = CreateCompatibleBitmap(bitDevice,

-                                       bmapWidth,

-                                       bmapHeight);

-    //VERIFY(bitObject);

-

-    // Assign the output bitmap to the device

-    origBmap = SelectObject(bitDevice, bitObject);

-    VERIFY(origBmap);

-

-    VERIFY( PatBlt( bitDevice, 0, 0, bmapWidth, bmapHeight,BLACKNESS ) );

-

-    // Use our source font on the device

-    VERIFY(SelectObject(bitDevice, GetCurrentObject(fontDevice,OBJ_FONT)));

-

-    // Draw the character

-    VERIFY(TextOut(bitDevice, 0, metric.tmAscent, &curChar, 1));

-

-    // Unselect our bmap object

-    VERIFY(SelectObject(bitDevice, origBmap));

-

-    // Convert the display dependant representation to a 1 bit deep DIB

-    numBytes = (bmapWidth * bmapHeight) / 8;

-    bmap = malloc(numBytes);

-    dibInfo->bmiHeader.biWidth = bmapWidth;

-    dibInfo->bmiHeader.biHeight = bmapHeight;

-    res = GetDIBits(bitDevice, bitObject, 0, bmapHeight, bmap,

-                    dibInfo,

-                    DIB_RGB_COLORS);

-    //VERIFY(res);

-

-    // Create the GL object

-    glNewList(i + listBase, GL_COMPILE);

-    glBitmap(bmapWidth, bmapHeight, 0.0, metric.tmDescent,

-             charWidth, 0.0,

-             bmap);

-    glEndList();

-    // CheckGL();

-

-    // Destroy the bmap object

-    DeleteObject(bitObject);

-

-    // Deallocate the bitmap data

-    free(bmap);

-  }

-

-  // Destroy the DC

-  VERIFY(DeleteDC(bitDevice));

-

-  free(dibInfo);

-

-  return TRUE;

-#undef VERIFY

-}

-

-WGLAPI BOOL GLAPIENTRY wglUseFontBitmapsA(HDC hdc, DWORD first,

-                                       DWORD count, DWORD listBase)

-{

-   int i;

-   GLuint font_list;

-   DWORD size;

-   GLYPHMETRICS gm;

-   HANDLE hBits;

-   LPSTR lpBits;

-   MAT2 mat;

-   int  success = TRUE;

-

-   if (first<0)

-      return FALSE;

-   if (count<0)

-      return FALSE;

-   if (listBase<0)

-      return FALSE;

-

-   font_list = listBase;

-

-   mat.eM11 = FixedFromDouble(1);

-   mat.eM12 = FixedFromDouble(0);

-   mat.eM21 = FixedFromDouble(0);

-   mat.eM22 = FixedFromDouble(-1);

-

-   memset(&gm,0,sizeof(gm));

-

-   /*

-   ** If we can't get the glyph outline, it may be because this is a fixed

-   ** font.  Try processing it that way.

-   */

-   if( GetGlyphOutline(hdc, first, GGO_BITMAP, &gm, 0, NULL, &mat)

-       == GDI_ERROR )

-   {

-       return wglUseFontBitmaps_FX( hdc, first, count, listBase );

-   }

-

-   /*

-   ** Otherwise process all desired characters.

-   */

-   for (i = 0; i < count; i++)

-   {

-       DWORD err;

-       

-      glNewList( font_list+i, GL_COMPILE );

-

-      /* allocate space for the bitmap/outline */

-      size = GetGlyphOutline(hdc, first + i, GGO_BITMAP, &gm, 0, NULL, &mat);

-      if (size == GDI_ERROR)

-      {

-         glEndList( );

-         err = GetLastError();

-         success = FALSE;

-         continue;

-      }

-

-      hBits  = GlobalAlloc(GHND, size+1);

-      lpBits = GlobalLock(hBits);

-

-      err = 

-      GetGlyphOutline(hdc,    /* handle to device context */

-                      first + i,          /* character to query */

-                      GGO_BITMAP,         /* format of data to return */

-                      &gm,                /* pointer to structure for metrics*/

-                      size,               /* size of buffer for data */

-                      lpBits,             /* pointer to buffer for data */

-                      &mat                /* pointer to transformation */

-                                          /* matrix structure */

-                  );

-

-      if (err == GDI_ERROR)

-      {

-         GlobalUnlock(hBits);

-         GlobalFree(hBits);

-         

-         glEndList( );

-         err = GetLastError();

-         success = FALSE;

-         continue;

-      }

-

-      glBitmap(gm.gmBlackBoxX,gm.gmBlackBoxY,

-               -gm.gmptGlyphOrigin.x,

-               gm.gmptGlyphOrigin.y,

-               gm.gmCellIncX,gm.gmCellIncY,

-               (const GLubyte * )lpBits);

-

-      GlobalUnlock(hBits);

-      GlobalFree(hBits);

-

-      glEndList( );

-   }

-

-   return success;

-}

-

-

-WGLAPI BOOL GLAPIENTRY wglUseFontBitmapsW(HDC hdc,DWORD first,DWORD count,DWORD listBase)

-{

-    return FALSE;

-}

-

-WGLAPI BOOL GLAPIENTRY wglUseFontOutlinesA(HDC hdc,DWORD first,DWORD count,

-                                  DWORD listBase,FLOAT deviation,

-                                  FLOAT extrusion,int format,

-                                  LPGLYPHMETRICSFLOAT lpgmf)

-{

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI BOOL GLAPIENTRY wglUseFontOutlinesW(HDC hdc,DWORD first,DWORD count,

-                                  DWORD listBase,FLOAT deviation,

-                                  FLOAT extrusion,int format,

-                                  LPGLYPHMETRICSFLOAT lpgmf)

-{

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI BOOL GLAPIENTRY wglDescribeLayerPlane(HDC hdc,int iPixelFormat,

-                                    int iLayerPlane,UINT nBytes,

-                                    LPLAYERPLANEDESCRIPTOR plpd)

-{

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI int GLAPIENTRY wglSetLayerPaletteEntries(HDC hdc,int iLayerPlane,

-                                       int iStart,int cEntries,

-                                       CONST COLORREF *pcr)

-{

-    SetLastError(0);

-    return(0);

-}

-

-WGLAPI int GLAPIENTRY wglGetLayerPaletteEntries(HDC hdc,int iLayerPlane,

-                                       int iStart,int cEntries,

-                                       COLORREF *pcr)

-{

-    SetLastError(0);

-    return(0);

-}

-

-WGLAPI BOOL GLAPIENTRY wglRealizeLayerPalette(HDC hdc,int iLayerPlane,BOOL bRealize)

-{

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI BOOL GLAPIENTRY wglSwapLayerBuffers(HDC hdc,UINT fuPlanes)

-{

-    if( !hdc )

-    {

-        WMesaSwapBuffers();

-        return(TRUE);

-    }

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI int GLAPIENTRY wglChoosePixelFormat(HDC hdc,

-                                  CONST PIXELFORMATDESCRIPTOR *ppfd)

-{

-    int		i,best = -1,bestdelta = 0x7FFFFFFF,delta,qt_valid_pix;

-

-    qt_valid_pix = qt_pix;

-    if(ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR) || ppfd->nVersion != 1)

-    {

-        SetLastError(0);

-        return(0);

-    }

-    for(i = 0;i < qt_valid_pix;i++)

-    {

-        delta = 0;

-        if(

-            (ppfd->dwFlags & PFD_DRAW_TO_WINDOW) &&

-            !(pix[i].pfd.dwFlags & PFD_DRAW_TO_WINDOW))

-            continue;

-        if(

-            (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) &&

-            !(pix[i].pfd.dwFlags & PFD_DRAW_TO_BITMAP))

-            continue;

-        if(

-            (ppfd->dwFlags & PFD_SUPPORT_GDI) &&

-            !(pix[i].pfd.dwFlags & PFD_SUPPORT_GDI))

-            continue;

-        if(

-            (ppfd->dwFlags & PFD_SUPPORT_OPENGL) &&

-            !(pix[i].pfd.dwFlags & PFD_SUPPORT_OPENGL))

-            continue;

-        if(

-            !(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) &&

-            ((ppfd->dwFlags & PFD_DOUBLEBUFFER) != (pix[i].pfd.dwFlags & PFD_DOUBLEBUFFER)))

-            continue;

-        if(

-            !(ppfd->dwFlags & PFD_STEREO_DONTCARE) &&

-            ((ppfd->dwFlags & PFD_STEREO) != (pix[i].pfd.dwFlags & PFD_STEREO)))

-            continue;

-        if(ppfd->iPixelType != pix[i].pfd.iPixelType)

-            delta++;

-        if(delta < bestdelta)

-        {

-            best = i + 1;

-            bestdelta = delta;

-            if(bestdelta == 0)

-                break;

-        }

-    }

-    if(best == -1)

-    {

-        SetLastError(0);

-        return(0);

-    }

-    return(best);

-}

-

-WGLAPI int GLAPIENTRY wglDescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes,

-                                    LPPIXELFORMATDESCRIPTOR ppfd)

-{

-    int		qt_valid_pix;

-

-    qt_valid_pix = qt_pix;

-    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || nBytes != sizeof(PIXELFORMATDESCRIPTOR))

-    {

-        SetLastError(0);

-        return(0);

-    }

-    *ppfd = pix[iPixelFormat - 1].pfd;

-    return(qt_valid_pix);

-}

-

-/*

-* GetProcAddress - return the address of an appropriate extension

-*/

-WGLAPI PROC GLAPIENTRY wglGetProcAddress(LPCSTR lpszProc)

-{

-    int		i;

-    for(i = 0;i < qt_ext;i++)

-        if(!strcmp(lpszProc,ext[i].name))

-            return(ext[i].proc);

-

-        SetLastError(0);

-        return(NULL);

-}

-

-WGLAPI int GLAPIENTRY wglGetPixelFormat(HDC hdc)

-{

-    if(curPFD == 0)

-    {

-        SetLastError(0);

-        return(0);

-    }

-    return(curPFD);

-}

-

-WGLAPI BOOL GLAPIENTRY wglSetPixelFormat(HDC hdc,int iPixelFormat,

-                                PIXELFORMATDESCRIPTOR *ppfd)

-{

-    int		qt_valid_pix;

-

-    qt_valid_pix = qt_pix;

-    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR))

-    {

-        SetLastError(0);

-        return(FALSE);

-    }

-    curPFD = iPixelFormat;

-    return(TRUE);

-}

-

-WGLAPI BOOL GLAPIENTRY wglSwapBuffers(HDC hdc)

-{

-   if (ctx_current < 0)

-      return FALSE;

-

-   if(wgl_ctx[ctx_current].ctx == NULL) {

-      SetLastError(0);

-      return(FALSE);

-   }

-   WMesaSwapBuffers();

-   return(TRUE);

-}

-

-#endif /* WIN32 */

+/* $Id: wgl.c,v 1.9 2001/09/18 16:39:38 kschultz Exp $ */
+
+/*
+* 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.
+*
+*/
+
+/*
+* File name 	: wgl.c
+* WGL stuff. Added by Oleg Letsinsky, ajl@ultersys.ru
+* Some things originated from the 3Dfx WGL functions
+*/
+
+#ifdef WIN32
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <windows.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include <GL/glext.h>
+//#include <GL/glu.h>
+
+#ifdef __cplusplus
+}
+#endif
+
+#include <stdio.h>
+#include <tchar.h>
+#include "wmesadef.h"
+#include "GL/wmesa.h"
+#include "mtypes.h"
+
+#define MAX_MESA_ATTRS	20
+
+struct __extensions__
+{
+    PROC	proc;
+    char	*name;
+};
+
+struct __pixelformat__
+{
+    PIXELFORMATDESCRIPTOR	pfd;
+    GLboolean doubleBuffered;
+};
+
+struct __extensions__	ext[] = {
+
+#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)glColorTableEXT,			"glColorTableEXT"		},
+   { (PROC)glColorSubTableEXT,			"glColorSubTableEXT"		},
+   { (PROC)glGetColorTableEXT,			"glGetColorTableEXT"		},
+   { (PROC)glGetColorTableParameterfvEXT,	"glGetColorTableParameterfvEXT"	},
+   { (PROC)glGetColorTableParameterivEXT,	"glGetColorTableParameterivEXT"	},
+   { (PROC)glPointParameterfEXT,		"glPointParameterfEXT"		},
+   { (PROC)glPointParameterfvEXT,		"glPointParameterfvEXT"		},
+   { (PROC)glBlendFuncSeparateEXT,		"glBlendFuncSeparateEXT"	},
+   { (PROC)glLockArraysEXT,			"glLockArraysEXT"		},
+   { (PROC)glUnlockArraysEXT,			"glUnlockArraysEXT"		}
+};
+
+int qt_ext = sizeof(ext) / sizeof(ext[0]);
+
+struct __pixelformat__	pix[] =
+{
+    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,
+        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT|PFD_DOUBLEBUFFER|PFD_SWAP_COPY,
+        PFD_TYPE_RGBA,
+        24,	8,	0,	8,	8,	8,	16,	8,	24,
+        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },
+        GL_TRUE
+    },
+    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,
+        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT,
+        PFD_TYPE_RGBA,
+        24,	8,	0,	8,	8,	8,	16,	8,	24,
+        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },
+        GL_FALSE
+    },
+};
+
+int				qt_pix = sizeof(pix) / sizeof(pix[0]);
+
+typedef struct {
+    WMesaContext ctx;
+    HDC hdc;
+} MesaWglCtx;
+
+#define MESAWGL_CTX_MAX_COUNT 20
+
+static MesaWglCtx wgl_ctx[MESAWGL_CTX_MAX_COUNT];
+
+static unsigned ctx_count = 0;
+static unsigned ctx_current = -1;
+static unsigned curPFD = 0;
+
+WGLAPI BOOL GLAPIENTRY wglCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask)
+{
+    return(FALSE);
+}
+
+WGLAPI HGLRC GLAPIENTRY wglCreateContext(HDC hdc)
+{
+    HWND		hWnd;
+    int i = 0;
+    if(!(hWnd = WindowFromDC(hdc)))
+    {
+        SetLastError(0);
+        return(NULL);
+    }
+    if (!ctx_count)
+    {
+    	for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++)
+    	{
+    		wgl_ctx[i].ctx = NULL;
+    		wgl_ctx[i].hdc = NULL;
+    	}
+    }
+    for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
+    {
+        if ( wgl_ctx[i].ctx == NULL )
+        {
+            wgl_ctx[i].ctx = WMesaCreateContext( hWnd, NULL, GL_TRUE,
+                pix[curPFD-1].doubleBuffered );
+            if (wgl_ctx[i].ctx == NULL)
+                break;
+            wgl_ctx[i].hdc = hdc;
+            ctx_count++;
+            return ((HGLRC)wgl_ctx[i].ctx);
+        }
+    }
+    SetLastError(0);
+    return(NULL);
+}
+
+WGLAPI BOOL GLAPIENTRY wglDeleteContext(HGLRC hglrc)
+{
+    int i;
+    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
+    {
+    	if ( wgl_ctx[i].ctx == (PWMC) hglrc )
+    	{
+            WMesaMakeCurrent((PWMC) hglrc);
+            WMesaDestroyContext();
+            wgl_ctx[i].ctx = NULL;
+            wgl_ctx[i].hdc = NULL;
+            ctx_count--;
+            return(TRUE);
+    	}
+    }
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI HGLRC GLAPIENTRY wglCreateLayerContext(HDC hdc,int iLayerPlane)
+{
+    SetLastError(0);
+    return(NULL);
+}
+
+WGLAPI HGLRC GLAPIENTRY wglGetCurrentContext(VOID)
+{
+   if (ctx_current < 0)
+      return 0;
+   else
+      return (HGLRC) wgl_ctx[ctx_current].ctx;
+}
+
+WGLAPI HDC GLAPIENTRY wglGetCurrentDC(VOID)
+{
+   if (ctx_current < 0)
+      return 0;
+   else
+      return wgl_ctx[ctx_current].hdc;
+}
+
+WGLAPI BOOL GLAPIENTRY wglMakeCurrent(HDC hdc,HGLRC hglrc)
+{
+    int i;
+
+    /* new code suggested by Andy Sy */
+    if (!hdc || !hglrc) {
+       WMesaMakeCurrent(NULL);
+       ctx_current = -1;
+       return TRUE;
+    }
+
+    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
+    {
+        if ( wgl_ctx[i].ctx == (PWMC) hglrc )
+        {
+            wgl_ctx[i].hdc = hdc;
+            WMesaMakeCurrent( (WMesaContext) hglrc );
+            ctx_current = i;
+            return TRUE;
+        }
+    }
+    return FALSE;
+}
+
+WGLAPI BOOL GLAPIENTRY wglShareLists(HGLRC hglrc1,HGLRC hglrc2)
+{
+    return(TRUE);
+}
+
+
+static FIXED FixedFromDouble(double d)
+{
+   long l = (long) (d * 65536L);
+   return *(FIXED *)&l;
+}
+
+
+/*
+** This is cribbed from FX/fxwgl.c, and seems to implement support
+** for bitmap fonts where the wglUseFontBitmapsA() code implements
+** support for outline fonts.  In combination they hopefully give
+** fairly generic support for fonts.
+*/
+static BOOL wglUseFontBitmaps_FX(HDC fontDevice, DWORD firstChar,
+                                 DWORD numChars, DWORD listBase)
+{
+#define VERIFY(a) a
+
+  TEXTMETRIC metric;
+  BITMAPINFO *dibInfo;
+  HDC bitDevice;
+  COLORREF tempColor;
+  int i;
+
+  VERIFY(GetTextMetrics(fontDevice, &metric));
+
+  dibInfo = (BITMAPINFO *) calloc(sizeof(BITMAPINFO) + sizeof(RGBQUAD), 1);
+  dibInfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+  dibInfo->bmiHeader.biPlanes = 1;
+  dibInfo->bmiHeader.biBitCount = 1;
+  dibInfo->bmiHeader.biCompression = BI_RGB;
+
+  bitDevice = CreateCompatibleDC(fontDevice);
+  // HDC bitDevice = CreateDC("DISPLAY", NULL, NULL, NULL);
+  // VERIFY(bitDevice);
+
+  // Swap fore and back colors so the bitmap has the right polarity
+  tempColor = GetBkColor(bitDevice);
+  SetBkColor(bitDevice, GetTextColor(bitDevice));
+  SetTextColor(bitDevice, tempColor);
+
+  // Place chars based on base line
+  VERIFY(SetTextAlign(bitDevice, TA_BASELINE) >= 0 ? 1 : 0);
+
+  for(i = 0; i < numChars; i++) {
+    SIZE size;
+    char curChar;
+    int charWidth,charHeight,bmapWidth,bmapHeight,numBytes,res;
+    HBITMAP bitObject;
+    HGDIOBJ origBmap;
+    unsigned char *bmap;
+
+    curChar = i + firstChar;
+
+    // Find how high/wide this character is
+    VERIFY(GetTextExtentPoint32(bitDevice, &curChar, 1, &size));
+
+    // Create the output bitmap
+    charWidth = size.cx;
+    charHeight = size.cy;
+    bmapWidth = ((charWidth + 31) / 32) * 32;   // Round up to the next multiple of 32 bits
+    bmapHeight = charHeight;
+    bitObject = CreateCompatibleBitmap(bitDevice,
+                                       bmapWidth,
+                                       bmapHeight);
+    //VERIFY(bitObject);
+
+    // Assign the output bitmap to the device
+    origBmap = SelectObject(bitDevice, bitObject);
+    VERIFY(origBmap);
+
+    VERIFY( PatBlt( bitDevice, 0, 0, bmapWidth, bmapHeight,BLACKNESS ) );
+
+    // Use our source font on the device
+    VERIFY(SelectObject(bitDevice, GetCurrentObject(fontDevice,OBJ_FONT)));
+
+    // Draw the character
+    VERIFY(TextOut(bitDevice, 0, metric.tmAscent, &curChar, 1));
+
+    // Unselect our bmap object
+    VERIFY(SelectObject(bitDevice, origBmap));
+
+    // Convert the display dependant representation to a 1 bit deep DIB
+    numBytes = (bmapWidth * bmapHeight) / 8;
+    bmap = malloc(numBytes);
+    dibInfo->bmiHeader.biWidth = bmapWidth;
+    dibInfo->bmiHeader.biHeight = bmapHeight;
+    res = GetDIBits(bitDevice, bitObject, 0, bmapHeight, bmap,
+                    dibInfo,
+                    DIB_RGB_COLORS);
+    //VERIFY(res);
+
+    // Create the GL object
+    glNewList(i + listBase, GL_COMPILE);
+    glBitmap(bmapWidth, bmapHeight, 0.0, metric.tmDescent,
+             charWidth, 0.0,
+             bmap);
+    glEndList();
+    // CheckGL();
+
+    // Destroy the bmap object
+    DeleteObject(bitObject);
+
+    // Deallocate the bitmap data
+    free(bmap);
+  }
+
+  // Destroy the DC
+  VERIFY(DeleteDC(bitDevice));
+
+  free(dibInfo);
+
+  return TRUE;
+#undef VERIFY
+}
+
+WGLAPI BOOL GLAPIENTRY wglUseFontBitmapsA(HDC hdc, DWORD first,
+                                       DWORD count, DWORD listBase)
+{
+   int i;
+   GLuint font_list;
+   DWORD size;
+   GLYPHMETRICS gm;
+   HANDLE hBits;
+   LPSTR lpBits;
+   MAT2 mat;
+   int  success = TRUE;
+
+   if (first<0)
+      return FALSE;
+   if (count<0)
+      return FALSE;
+   if (listBase<0)
+      return FALSE;
+
+   font_list = listBase;
+
+   mat.eM11 = FixedFromDouble(1);
+   mat.eM12 = FixedFromDouble(0);
+   mat.eM21 = FixedFromDouble(0);
+   mat.eM22 = FixedFromDouble(-1);
+
+   memset(&gm,0,sizeof(gm));
+
+   /*
+   ** If we can't get the glyph outline, it may be because this is a fixed
+   ** font.  Try processing it that way.
+   */
+   if( GetGlyphOutline(hdc, first, GGO_BITMAP, &gm, 0, NULL, &mat)
+       == GDI_ERROR )
+   {
+       return wglUseFontBitmaps_FX( hdc, first, count, listBase );
+   }
+
+   /*
+   ** Otherwise process all desired characters.
+   */
+   for (i = 0; i < count; i++)
+   {
+       DWORD err;
+       
+      glNewList( font_list+i, GL_COMPILE );
+
+      /* allocate space for the bitmap/outline */
+      size = GetGlyphOutline(hdc, first + i, GGO_BITMAP, &gm, 0, NULL, &mat);
+      if (size == GDI_ERROR)
+      {
+         glEndList( );
+         err = GetLastError();
+         success = FALSE;
+         continue;
+      }
+
+      hBits  = GlobalAlloc(GHND, size+1);
+      lpBits = GlobalLock(hBits);
+
+      err = 
+      GetGlyphOutline(hdc,    /* handle to device context */
+                      first + i,          /* character to query */
+                      GGO_BITMAP,         /* format of data to return */
+                      &gm,                /* pointer to structure for metrics*/
+                      size,               /* size of buffer for data */
+                      lpBits,             /* pointer to buffer for data */
+                      &mat                /* pointer to transformation */
+                                          /* matrix structure */
+                  );
+
+      if (err == GDI_ERROR)
+      {
+         GlobalUnlock(hBits);
+         GlobalFree(hBits);
+         
+         glEndList( );
+         err = GetLastError();
+         success = FALSE;
+         continue;
+      }
+
+      glBitmap(gm.gmBlackBoxX,gm.gmBlackBoxY,
+               -gm.gmptGlyphOrigin.x,
+               gm.gmptGlyphOrigin.y,
+               gm.gmCellIncX,gm.gmCellIncY,
+               (const GLubyte * )lpBits);
+
+      GlobalUnlock(hBits);
+      GlobalFree(hBits);
+
+      glEndList( );
+   }
+
+   return success;
+}
+
+
+WGLAPI BOOL GLAPIENTRY wglUseFontBitmapsW(HDC hdc,DWORD first,DWORD count,DWORD listBase)
+{
+    return FALSE;
+}
+
+WGLAPI BOOL GLAPIENTRY wglUseFontOutlinesA(HDC hdc,DWORD first,DWORD count,
+                                  DWORD listBase,FLOAT deviation,
+                                  FLOAT extrusion,int format,
+                                  LPGLYPHMETRICSFLOAT lpgmf)
+{
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI BOOL GLAPIENTRY wglUseFontOutlinesW(HDC hdc,DWORD first,DWORD count,
+                                  DWORD listBase,FLOAT deviation,
+                                  FLOAT extrusion,int format,
+                                  LPGLYPHMETRICSFLOAT lpgmf)
+{
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI BOOL GLAPIENTRY wglDescribeLayerPlane(HDC hdc,int iPixelFormat,
+                                    int iLayerPlane,UINT nBytes,
+                                    LPLAYERPLANEDESCRIPTOR plpd)
+{
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI int GLAPIENTRY wglSetLayerPaletteEntries(HDC hdc,int iLayerPlane,
+                                       int iStart,int cEntries,
+                                       CONST COLORREF *pcr)
+{
+    SetLastError(0);
+    return(0);
+}
+
+WGLAPI int GLAPIENTRY wglGetLayerPaletteEntries(HDC hdc,int iLayerPlane,
+                                       int iStart,int cEntries,
+                                       COLORREF *pcr)
+{
+    SetLastError(0);
+    return(0);
+}
+
+WGLAPI BOOL GLAPIENTRY wglRealizeLayerPalette(HDC hdc,int iLayerPlane,BOOL bRealize)
+{
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI BOOL GLAPIENTRY wglSwapLayerBuffers(HDC hdc,UINT fuPlanes)
+{
+    if( !hdc )
+    {
+        WMesaSwapBuffers();
+        return(TRUE);
+    }
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI int GLAPIENTRY wglChoosePixelFormat(HDC hdc,
+                                  CONST PIXELFORMATDESCRIPTOR *ppfd)
+{
+    int		i,best = -1,bestdelta = 0x7FFFFFFF,delta,qt_valid_pix;
+
+    qt_valid_pix = qt_pix;
+    if(ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR) || ppfd->nVersion != 1)
+    {
+        SetLastError(0);
+        return(0);
+    }
+    for(i = 0;i < qt_valid_pix;i++)
+    {
+        delta = 0;
+        if(
+            (ppfd->dwFlags & PFD_DRAW_TO_WINDOW) &&
+            !(pix[i].pfd.dwFlags & PFD_DRAW_TO_WINDOW))
+            continue;
+        if(
+            (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) &&
+            !(pix[i].pfd.dwFlags & PFD_DRAW_TO_BITMAP))
+            continue;
+        if(
+            (ppfd->dwFlags & PFD_SUPPORT_GDI) &&
+            !(pix[i].pfd.dwFlags & PFD_SUPPORT_GDI))
+            continue;
+        if(
+            (ppfd->dwFlags & PFD_SUPPORT_OPENGL) &&
+            !(pix[i].pfd.dwFlags & PFD_SUPPORT_OPENGL))
+            continue;
+        if(
+            !(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) &&
+            ((ppfd->dwFlags & PFD_DOUBLEBUFFER) != (pix[i].pfd.dwFlags & PFD_DOUBLEBUFFER)))
+            continue;
+        if(
+            !(ppfd->dwFlags & PFD_STEREO_DONTCARE) &&
+            ((ppfd->dwFlags & PFD_STEREO) != (pix[i].pfd.dwFlags & PFD_STEREO)))
+            continue;
+        if(ppfd->iPixelType != pix[i].pfd.iPixelType)
+            delta++;
+        if(delta < bestdelta)
+        {
+            best = i + 1;
+            bestdelta = delta;
+            if(bestdelta == 0)
+                break;
+        }
+    }
+    if(best == -1)
+    {
+        SetLastError(0);
+        return(0);
+    }
+    return(best);
+}
+
+WGLAPI int GLAPIENTRY wglDescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes,
+                                    LPPIXELFORMATDESCRIPTOR ppfd)
+{
+    int		qt_valid_pix;
+
+    qt_valid_pix = qt_pix;
+    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || nBytes != sizeof(PIXELFORMATDESCRIPTOR))
+    {
+        SetLastError(0);
+        return(0);
+    }
+    *ppfd = pix[iPixelFormat - 1].pfd;
+    return(qt_valid_pix);
+}
+
+/*
+* GetProcAddress - return the address of an appropriate extension
+*/
+WGLAPI PROC GLAPIENTRY wglGetProcAddress(LPCSTR lpszProc)
+{
+    int		i;
+    for(i = 0;i < qt_ext;i++)
+        if(!strcmp(lpszProc,ext[i].name))
+            return(ext[i].proc);
+
+        SetLastError(0);
+        return(NULL);
+}
+
+WGLAPI int GLAPIENTRY wglGetPixelFormat(HDC hdc)
+{
+    if(curPFD == 0)
+    {
+        SetLastError(0);
+        return(0);
+    }
+    return(curPFD);
+}
+
+WGLAPI BOOL GLAPIENTRY wglSetPixelFormat(HDC hdc,int iPixelFormat,
+                                PIXELFORMATDESCRIPTOR *ppfd)
+{
+    int		qt_valid_pix;
+
+    qt_valid_pix = qt_pix;
+    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR))
+    {
+        SetLastError(0);
+        return(FALSE);
+    }
+    curPFD = iPixelFormat;
+    return(TRUE);
+}
+
+WGLAPI BOOL GLAPIENTRY wglSwapBuffers(HDC hdc)
+{
+   if (ctx_current < 0)
+      return FALSE;
+
+   if(wgl_ctx[ctx_current].ctx == NULL) {
+      SetLastError(0);
+      return(FALSE);
+   }
+   WMesaSwapBuffers();
+   return(TRUE);
+}
+
+#endif /* WIN32 */