Initial revision

1 files changed, 518 insertions, 0 deletions

diff --git a/src/mesa/drivers/windows/wgl.c b/src/mesa/drivers/windows/wgl.c
new file mode 100644
index 00000000000..d5f577dd814
--- /dev/null
+++ b/src/mesa/drivers/windows/wgl.c
@@ -0,0 +1,518 @@
+/* $Id: wgl.c,v 1.1 1999/08/19 00:55:42 jtg 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, [email protected]

+* Some things originated from the 3Dfx WGL functions

+*/

+

+#ifdef WIN32

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+

+#include <windows.h>

+

+#include <GL/gl.h>

+#include <GL/glu.h>

+

+#ifdef __cplusplus

+}

+#endif

+

+#include <stdio.h>

+#include <tchar.h>

+#include "wmesadef.h"

+#include "GL/wmesa.h"

+#include "types.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)glBlendFuncSeparateINGR,		"glBlendFuncSeparateINGR"	},

+   { (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;

+

+GLAPI BOOL GLWINAPI wglCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask)

+{

+    return(FALSE);

+}

+

+GLAPI HGLRC GLWINAPI 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);

+}

+

+GLAPI BOOL GLWINAPI 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);

+}

+

+GLAPI HGLRC GLWINAPI wglCreateLayerContext(HDC hdc,int iLayerPlane)

+{

+    SetLastError(0);

+    return(NULL);

+}

+

+GLAPI HGLRC GLWINAPI wglGetCurrentContext(VOID)

+{

+   if (ctx_current < 0)

+      return 0;

+   else

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

+}

+

+GLAPI HDC GLWINAPI wglGetCurrentDC(VOID)

+{

+   if (ctx_current < 0)

+      return 0;

+   else

+      return wgl_ctx[ctx_current].hdc;

+}

+

+GLAPI BOOL GLWINAPI 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;

+}

+

+GLAPI BOOL GLWINAPI wglShareLists(HGLRC hglrc1,HGLRC hglrc2)

+{

+    return(TRUE);

+}

+

+
+static FIXED FixedFromDouble(double d)
+{
+   long l = (long) (d * 65536L);
+   return *(FIXED *)&l;
+}
+
+
+GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first,
+                                       DWORD count, DWORD listBase)
+{
+   int i;
+   GLuint font_list;
+   DWORD size;
+   GLYPHMETRICS gm;
+   HANDLE hBits;
+   LPSTR lpBits;
+   MAT2 mat;
+
+   if (first<0)
+      return FALSE;
+   if (count<0)
+      return FALSE;
+   if (listBase<0)
+      return FALSE;
+
+   font_list = glGenLists( count );
+   if(font_list == 0)
+      return FALSE;
+
+   mat.eM11 = FixedFromDouble(1);
+   mat.eM12 = FixedFromDouble(0);
+   mat.eM21 = FixedFromDouble(0);
+   mat.eM22 = FixedFromDouble(1);
+
+   memset(&gm,0,sizeof(gm));
+
+   for (i = 0; i < count; i++)
+   {
+      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)
+      {
+         DWORD err;
+         err = GetLastError();
+         return(FALSE);
+      }
+
+      hBits  = GlobalAlloc(GHND, size);
+      lpBits = GlobalLock(hBits);
+
+      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 (*lpBits == GDI_ERROR)
+      {
+         DWORD err;
+         err = GetLastError();
+
+         GlobalUnlock(hBits);
+         GlobalFree(hBits);
+
+         return(FALSE);
+      }
+
+      glBitmap(gm.gmBlackBoxX,gm.gmBlackBoxY,
+               gm.gmptGlyphOrigin.x,
+               gm.gmptGlyphOrigin.y,
+               gm.gmCellIncX,gm.gmCellIncY,
+               (const GLubyte * )lpBits);
+
+      GlobalUnlock(hBits);
+      GlobalFree(hBits);
+
+      glEndList( );
+   }
+
+    return TRUE;
+}
+

+GLAPI BOOL GLWINAPI wglUseFontBitmapsW(HDC hdc,DWORD first,DWORD count,DWORD listBase)

+{

+    return FALSE;

+}

+

+GLAPI BOOL GLWINAPI wglUseFontOutlinesA(HDC hdc,DWORD first,DWORD count,

+                                  DWORD listBase,FLOAT deviation,

+                                  FLOAT extrusion,int format,

+                                  LPGLYPHMETRICSFLOAT lpgmf)

+{

+    SetLastError(0);

+    return(FALSE);

+}

+

+GLAPI BOOL GLWINAPI wglUseFontOutlinesW(HDC hdc,DWORD first,DWORD count,

+                                  DWORD listBase,FLOAT deviation,

+                                  FLOAT extrusion,int format,

+                                  LPGLYPHMETRICSFLOAT lpgmf)

+{

+    SetLastError(0);

+    return(FALSE);

+}

+

+GLAPI BOOL GLWINAPI wglDescribeLayerPlane(HDC hdc,int iPixelFormat,

+                                    int iLayerPlane,UINT nBytes,

+                                    LPLAYERPLANEDESCRIPTOR plpd)

+{

+    SetLastError(0);

+    return(FALSE);

+}

+

+GLAPI int GLWINAPI wglSetLayerPaletteEntries(HDC hdc,int iLayerPlane,

+                                       int iStart,int cEntries,

+                                       CONST COLORREF *pcr)

+{

+    SetLastError(0);

+    return(0);

+}

+

+GLAPI int GLWINAPI wglGetLayerPaletteEntries(HDC hdc,int iLayerPlane,

+                                       int iStart,int cEntries,

+                                       COLORREF *pcr)

+{

+    SetLastError(0);

+    return(0);

+}

+

+GLAPI BOOL GLWINAPI wglRealizeLayerPalette(HDC hdc,int iLayerPlane,BOOL bRealize)

+{

+    SetLastError(0);

+    return(FALSE);

+}

+

+GLAPI BOOL GLWINAPI wglSwapLayerBuffers(HDC hdc,UINT fuPlanes)

+{

+    if( !hdc )

+    {

+        WMesaSwapBuffers();

+        return(TRUE);

+    }

+    SetLastError(0);

+    return(FALSE);

+}

+

+GLAPI int GLWINAPI 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);

+}

+

+GLAPI int GLWINAPI 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

+*/

+GLAPI PROC GLWINAPI 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);

+}

+

+GLAPI int GLWINAPI wglGetPixelFormat(HDC hdc)

+{

+    if(curPFD == 0)

+    {

+        SetLastError(0);

+        return(0);

+    }

+    return(curPFD);

+}

+

+GLAPI BOOL GLWINAPI 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);

+}

+

+GLAPI BOOL GLWINAPI 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 */