dlls/opengl32/wgl.c

   1 /* Window-specific OpenGL functions implementation.
   2  *
   3  * Copyright (c) 1999 Lionel Ulmer
   4  * Copyright (c) 2005 Raphael Junqueira
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31 #include "winreg.h"
  32 #include "wingdi.h"
  33 #include "winternl.h"
  34 #include "winnt.h"
  35
  36 #include "opengl_ext.h"
  37 #ifdef HAVE_GL_GLU_H
  38 #undef far
  39 #undef near
  40 #include <GL/glu.h>
  41 #endif
  42 #include "wine/library.h"
  43 #include "wine/debug.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(wgl);
  46 WINE_DECLARE_DEBUG_CHANNEL(opengl);
  47
  48 static struct
  49 {
  50     PROC  (WINAPI *p_wglGetProcAddress)(LPCSTR  lpszProc);
  51     BOOL  (WINAPI *p_wglMakeCurrent)(HDC hdc, HGLRC hglrc);
  52     HGLRC (WINAPI *p_wglCreateContext)(HDC hdc);
  53     void  (WINAPI *p_wglGetIntegerv)(GLenum pname, GLint* params);
  54     void  (WINAPI *p_wglFinish)(void);
  55     void  (WINAPI *p_wglFlush)(void);
  56 } wine_wgl;
  57
  58 #ifdef SONAME_LIBGLU
  59 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
  60 MAKE_FUNCPTR(gluNewTess)
  61 MAKE_FUNCPTR(gluDeleteTess)
  62 MAKE_FUNCPTR(gluTessBeginContour)
  63 MAKE_FUNCPTR(gluTessBeginPolygon)
  64 MAKE_FUNCPTR(gluTessCallback)
  65 MAKE_FUNCPTR(gluTessEndContour)
  66 MAKE_FUNCPTR(gluTessEndPolygon)
  67 MAKE_FUNCPTR(gluTessVertex)
  68 #undef MAKE_FUNCPTR
  69 #endif /* SONAME_LIBGLU */
  70
  71 /* x11drv GDI escapes */
  72 #define X11DRV_ESCAPE 6789
  73 enum x11drv_escape_codes
  74 {
  75     X11DRV_GET_DISPLAY,         /* get X11 display for a DC */
  76     X11DRV_GET_DRAWABLE,        /* get current drawable for a DC */
  77     X11DRV_GET_FONT,            /* get current X font for a DC */
  78     X11DRV_SET_DRAWABLE,        /* set current drawable for a DC */
  79     X11DRV_START_EXPOSURES,     /* start graphics exposures */
  80     X11DRV_END_EXPOSURES,       /* end graphics exposures */
  81     X11DRV_GET_DCE,             /* get the DCE pointer */
  82     X11DRV_SET_DCE,             /* set the DCE pointer */
  83     X11DRV_GET_GLX_DRAWABLE,    /* get current glx drawable for a DC */
  84     X11DRV_SYNC_PIXMAP          /* sync the dibsection to its pixmap */
  85 };
  86
  87 void (*wine_tsx11_lock_ptr)(void) = NULL;
  88 void (*wine_tsx11_unlock_ptr)(void) = NULL;
  89
  90 static HMODULE opengl32_handle;
  91 static void* libglu_handle = NULL;
  92
  93 static char* internal_gl_disabled_extensions = NULL;
  94 static char* internal_gl_extensions = NULL;
  95
  96 typedef struct wine_glcontext {
  97   HDC hdc;
  98   BOOL do_escape;
  99   /* ... more stuff here */
 100 } Wine_GLContext;
 101
 102 void enter_gl(void)
 103 {
 104     Wine_GLContext *curctx = NtCurrentTeb()->glContext;
 105
 106     if (curctx && curctx->do_escape)
 107     {
 108         enum x11drv_escape_codes escape = X11DRV_SYNC_PIXMAP;
 109         ExtEscape(curctx->hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL);
 110     }
 111
 112     wine_tsx11_lock_ptr();
 113     return;
 114 }
 115
 116 const GLubyte * WINAPI wine_glGetString( GLenum name );
 117
 118 /***********************************************************************
 119  *              wglMakeCurrent (OPENGL32.@)
 120  */
 121 BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
 122 {
 123   return wine_wgl.p_wglMakeCurrent(hdc, hglrc);
 124 }
 125
 126 /***********************************************************************
 127  *              wglCreateContext (OPENGL32.@)
 128  */
 129 HGLRC WINAPI wglCreateContext(HDC hdc)
 130 {
 131   return wine_wgl.p_wglCreateContext(hdc);
 132 }
 133
 134 /***********************************************************************
 135  *              wglCreateLayerContext (OPENGL32.@)
 136  */
 137 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
 138                                    int iLayerPlane) {
 139   TRACE("(%p,%d)\n", hdc, iLayerPlane);
 140
 141   if (iLayerPlane == 0) {
 142       return wglCreateContext(hdc);
 143   }
 144   FIXME(" no handler for layer %d\n", iLayerPlane);
 145
 146   return NULL;
 147 }
 148
 149 /***********************************************************************
 150  *              wglDescribeLayerPlane (OPENGL32.@)
 151  */
 152 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
 153                                   int iPixelFormat,
 154                                   int iLayerPlane,
 155                                   UINT nBytes,
 156                                   LPLAYERPLANEDESCRIPTOR plpd) {
 157   FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
 158
 159   return FALSE;
 160 }
 161
 162 /***********************************************************************
 163  *              wglGetLayerPaletteEntries (OPENGL32.@)
 164  */
 165 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
 166                                      int iLayerPlane,
 167                                      int iStart,
 168                                      int cEntries,
 169                                      const COLORREF *pcr) {
 170   FIXME("(): stub !\n");
 171
 172   return 0;
 173 }
 174
 175 static int compar(const void *elt_a, const void *elt_b) {
 176   return strcmp(((const OpenGL_extension *) elt_a)->name,
 177                 ((const OpenGL_extension *) elt_b)->name);
 178 }
 179
 180 /* Check if a GL extension is supported */
 181 static BOOL is_extension_supported(const char* extension)
 182 {
 183     const char *gl_ext_string = (const char*)wine_glGetString(GL_EXTENSIONS);
 184
 185     TRACE("Checking for extension '%s'\n", extension);
 186
 187     if(!gl_ext_string) {
 188         ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
 189         return FALSE;
 190     }
 191
 192     /* We use the GetProcAddress function from the display driver to retrieve function pointers
 193      * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
 194      * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
 195      * require the function to return NULL when a extension isn't found. For this reason we check
 196      * if the OpenGL extension required for the function we are looking up is supported. */
 197
 198     /* Check if the extension is part of the GL extension string to see if it is supported. */
 199     if(strstr(gl_ext_string, extension) != NULL)
 200         return TRUE;
 201
 202     /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
 203      * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
 204      * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
 205      * Check if we are searching for a core GL function */
 206     if(strncmp(extension, "GL_VERSION_", 11) == 0)
 207     {
 208         const GLubyte *gl_version = glGetString(GL_VERSION);
 209         const char *version = extension + 11; /* Move past 'GL_VERSION_' */
 210
 211         if(!gl_version) {
 212             ERR("Error no OpenGL version found,\n");
 213             return FALSE;
 214         }
 215
 216         /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
 217          * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
 218         if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
 219             return TRUE;
 220         }
 221         WARN("The function requires OpenGL version '%c.%c' while your drivers only provide '%c.%c'\n", version[0], version[2], gl_version[0], gl_version[2]);
 222     }
 223
 224     return FALSE;
 225 }
 226
 227 /***********************************************************************
 228  *              wglGetProcAddress (OPENGL32.@)
 229  */
 230 PROC WINAPI wglGetProcAddress(LPCSTR  lpszProc) {
 231   void *local_func;
 232   OpenGL_extension  ext;
 233   const OpenGL_extension *ext_ret;
 234
 235   TRACE("(%s)\n", lpszProc);
 236
 237   if(lpszProc == NULL)
 238     return NULL;
 239
 240   /* First, look if it's not already defined in the 'standard' OpenGL functions */
 241   if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
 242     TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
 243     return local_func;
 244   }
 245
 246   /* After that, search in the thunks to find the real name of the extension */
 247   ext.name = lpszProc;
 248   ext_ret = bsearch(&ext, extension_registry, extension_registry_size,
 249                     sizeof(OpenGL_extension), compar);
 250
 251   /* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
 252   if (ext_ret == NULL) {
 253     /* If the function name starts with a w it is a WGL extension */
 254     if(lpszProc[0] == 'w')
 255       return wine_wgl.p_wglGetProcAddress(lpszProc);
 256
 257     /* We are dealing with an unknown GL extension. */
 258     WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
 259     return NULL;
 260   } else { /* We are looking for an OpenGL extension */
 261
 262     /* Check if the GL extension required by the function is available */
 263     if(!is_extension_supported(ext_ret->extension)) {
 264         WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
 265     }
 266
 267     local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
 268
 269     /* After that, look at the extensions defined in the Linux OpenGL library */
 270     if (local_func == NULL) {
 271       char buf[256];
 272       void *ret = NULL;
 273
 274       /* Remove the 3 last letters (EXT, ARB, ...).
 275
 276          I know that some extensions have more than 3 letters (MESA, NV,
 277          INTEL, ...), but this is only a stop-gap measure to fix buggy
 278          OpenGL drivers (moreover, it is only useful for old 1.0 apps
 279          that query the glBindTextureEXT extension).
 280       */
 281       memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
 282       buf[strlen(ext_ret->name) - 3] = '\0';
 283       TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
 284
 285       ret = GetProcAddress(opengl32_handle, buf);
 286       if (ret != NULL) {
 287         TRACE(" found function in main OpenGL library (%p) !\n", ret);
 288       } else {
 289         WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
 290       }
 291
 292       return ret;
 293     } else {
 294       TRACE(" returning function  (%p)\n", ext_ret->func);
 295       extension_funcs[ext_ret - extension_registry] = local_func;
 296
 297       return ext_ret->func;
 298     }
 299   }
 300 }
 301
 302 /***********************************************************************
 303  *              wglRealizeLayerPalette (OPENGL32.@)
 304  */
 305 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
 306                                    int iLayerPlane,
 307                                    BOOL bRealize) {
 308   FIXME("()\n");
 309
 310   return FALSE;
 311 }
 312
 313 /***********************************************************************
 314  *              wglSetLayerPaletteEntries (OPENGL32.@)
 315  */
 316 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
 317                                      int iLayerPlane,
 318                                      int iStart,
 319                                      int cEntries,
 320                                      const COLORREF *pcr) {
 321   FIXME("(): stub !\n");
 322
 323   return 0;
 324 }
 325
 326 /***********************************************************************
 327  *              wglSwapLayerBuffers (OPENGL32.@)
 328  */
 329 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
 330                                 UINT fuPlanes) {
 331   TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
 332
 333   if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
 334     if (!SwapBuffers(hdc)) return FALSE;
 335     fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
 336   }
 337
 338   if (fuPlanes) {
 339     WARN("Following layers unhandled : %08x\n", fuPlanes);
 340   }
 341
 342   return TRUE;
 343 }
 344
 345 #ifdef SONAME_LIBGLU
 346
 347 static void *load_libglu(void)
 348 {
 349     static int already_loaded;
 350     void *handle;
 351
 352     if (already_loaded) return libglu_handle;
 353     already_loaded = 1;
 354
 355     TRACE("Trying to load GLU library: %s\n", SONAME_LIBGLU);
 356     handle = wine_dlopen(SONAME_LIBGLU, RTLD_NOW, NULL, 0);
 357     if (!handle)
 358     {
 359         WARN("Failed to load %s\n", SONAME_LIBGLU);
 360         return NULL;
 361     }
 362
 363 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(handle, #f, NULL, 0)) == NULL) goto sym_not_found;
 364 LOAD_FUNCPTR(gluNewTess)
 365 LOAD_FUNCPTR(gluDeleteTess)
 366 LOAD_FUNCPTR(gluTessBeginContour)
 367 LOAD_FUNCPTR(gluTessBeginPolygon)
 368 LOAD_FUNCPTR(gluTessCallback)
 369 LOAD_FUNCPTR(gluTessEndContour)
 370 LOAD_FUNCPTR(gluTessEndPolygon)
 371 LOAD_FUNCPTR(gluTessVertex)
 372 #undef LOAD_FUNCPTR
 373     libglu_handle = handle;
 374     return handle;
 375
 376 sym_not_found:
 377     WARN("Unable to load function ptrs from libGLU\n");
 378     /* Close the library as we won't use it */
 379     wine_dlclose(handle, NULL, 0);
 380     return NULL;
 381 }
 382
 383 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
 384 {
 385     vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
 386     vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
 387     vertex[2] = 0.0;
 388 }
 389
 390 static void tess_callback_vertex(GLvoid *vertex)
 391 {
 392     GLdouble *dbl = vertex;
 393     TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
 394     glVertex3dv(vertex);
 395 }
 396
 397 static void tess_callback_begin(GLenum which)
 398 {
 399     TRACE("%d\n", which);
 400     glBegin(which);
 401 }
 402
 403 static void tess_callback_end(void)
 404 {
 405     TRACE("\n");
 406     glEnd();
 407 }
 408
 409 /***********************************************************************
 410  *              wglUseFontOutlines_common
 411  */
 412 static BOOL wglUseFontOutlines_common(HDC hdc,
 413                                       DWORD first,
 414                                       DWORD count,
 415                                       DWORD listBase,
 416                                       FLOAT deviation,
 417                                       FLOAT extrusion,
 418                                       int format,
 419                                       LPGLYPHMETRICSFLOAT lpgmf,
 420                                       BOOL unicode)
 421 {
 422     UINT glyph;
 423     const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
 424     GLUtesselator *tess;
 425     LOGFONTW lf;
 426     HFONT old_font, unscaled_font;
 427     UINT em_size = 1024;
 428     RECT rc;
 429
 430     TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
 431           listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
 432
 433     if (!load_libglu())
 434     {
 435         ERR("libGLU is required for this function but isn't loaded\n");
 436         return FALSE;
 437     }
 438
 439     ENTER_GL();
 440     tess = pgluNewTess();
 441     if(tess)
 442     {
 443         pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
 444         pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
 445         pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
 446     }
 447     LEAVE_GL();
 448
 449     if(!tess) return FALSE;
 450
 451     GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
 452     rc.left = rc.right = rc.bottom = 0;
 453     rc.top = em_size;
 454     DPtoLP(hdc, (POINT*)&rc, 2);
 455     lf.lfHeight = -abs(rc.top - rc.bottom);
 456     lf.lfOrientation = lf.lfEscapement = 0;
 457     unscaled_font = CreateFontIndirectW(&lf);
 458     old_font = SelectObject(hdc, unscaled_font);
 459
 460     for (glyph = first; glyph < first + count; glyph++)
 461     {
 462         DWORD needed;
 463         GLYPHMETRICS gm;
 464         BYTE *buf;
 465         TTPOLYGONHEADER *pph;
 466         TTPOLYCURVE *ppc;
 467         GLdouble *vertices;
 468
 469         if(unicode)
 470             needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
 471         else
 472             needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
 473
 474         if(needed == GDI_ERROR)
 475             goto error;
 476
 477         buf = HeapAlloc(GetProcessHeap(), 0, needed);
 478         vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
 479
 480         if(unicode)
 481             GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
 482         else
 483             GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
 484
 485         TRACE("glyph %d\n", glyph);
 486
 487         if(lpgmf)
 488         {
 489             lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
 490             lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
 491             lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
 492             lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
 493             lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
 494             lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
 495
 496             TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
 497                   lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
 498             lpgmf++;
 499         }
 500
 501         ENTER_GL();
 502         glNewList(listBase++, GL_COMPILE);
 503         pgluTessBeginPolygon(tess, NULL);
 504
 505         pph = (TTPOLYGONHEADER*)buf;
 506         while((BYTE*)pph < buf + needed)
 507         {
 508             TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
 509
 510             pgluTessBeginContour(tess);
 511
 512             fixed_to_double(pph->pfxStart, em_size, vertices);
 513             pgluTessVertex(tess, vertices, vertices);
 514             vertices += 3;
 515
 516             ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
 517             while((char*)ppc < (char*)pph + pph->cb)
 518             {
 519                 int i;
 520
 521                 switch(ppc->wType) {
 522                 case TT_PRIM_LINE:
 523                     for(i = 0; i < ppc->cpfx; i++)
 524                     {
 525                         TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
 526                         fixed_to_double(ppc->apfx[i], em_size, vertices);
 527                         pgluTessVertex(tess, vertices, vertices);
 528                         vertices += 3;
 529                     }
 530                     break;
 531
 532                 case TT_PRIM_QSPLINE:
 533                     for(i = 0; i < ppc->cpfx/2; i++)
 534                     {
 535                         /* FIXME just connecting the control points for now */
 536                         TRACE("\t\tcurve  %d,%d %d,%d\n",
 537                               ppc->apfx[i * 2].x.value,     ppc->apfx[i * 3].y.value,
 538                               ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
 539                         fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
 540                         pgluTessVertex(tess, vertices, vertices);
 541                         vertices += 3;
 542                         fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
 543                         pgluTessVertex(tess, vertices, vertices);
 544                         vertices += 3;
 545                     }
 546                     break;
 547                 default:
 548                     ERR("\t\tcurve type = %d\n", ppc->wType);
 549                     pgluTessEndContour(tess);
 550                     goto error_in_list;
 551                 }
 552
 553                 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
 554                                      (ppc->cpfx - 1) * sizeof(POINTFX));
 555             }
 556             pgluTessEndContour(tess);
 557             pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
 558         }
 559
 560 error_in_list:
 561         pgluTessEndPolygon(tess);
 562         glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
 563         glEndList();
 564         LEAVE_GL();
 565         HeapFree(GetProcessHeap(), 0, buf);
 566         HeapFree(GetProcessHeap(), 0, vertices);
 567     }
 568
 569  error:
 570     DeleteObject(SelectObject(hdc, old_font));
 571     pgluDeleteTess(tess);
 572     return TRUE;
 573
 574 }
 575
 576 #else /* SONAME_LIBGLU */
 577
 578 static BOOL wglUseFontOutlines_common(HDC hdc,
 579                                       DWORD first,
 580                                       DWORD count,
 581                                       DWORD listBase,
 582                                       FLOAT deviation,
 583                                       FLOAT extrusion,
 584                                       int format,
 585                                       LPGLYPHMETRICSFLOAT lpgmf,
 586                                       BOOL unicode)
 587 {
 588     FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
 589     return FALSE;
 590 }
 591
 592 #endif /* SONAME_LIBGLU */
 593
 594 /***********************************************************************
 595  *              wglUseFontOutlinesA (OPENGL32.@)
 596  */
 597 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
 598                                 DWORD first,
 599                                 DWORD count,
 600                                 DWORD listBase,
 601                                 FLOAT deviation,
 602                                 FLOAT extrusion,
 603                                 int format,
 604                                 LPGLYPHMETRICSFLOAT lpgmf)
 605 {
 606     return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
 607 }
 608
 609 /***********************************************************************
 610  *              wglUseFontOutlinesW (OPENGL32.@)
 611  */
 612 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
 613                                 DWORD first,
 614                                 DWORD count,
 615                                 DWORD listBase,
 616                                 FLOAT deviation,
 617                                 FLOAT extrusion,
 618                                 int format,
 619                                 LPGLYPHMETRICSFLOAT lpgmf)
 620 {
 621     return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
 622 }
 623
 624 /***********************************************************************
 625  *              glFinish (OPENGL32.@)
 626  */
 627 void WINAPI wine_glFinish( void )
 628 {
 629     TRACE("()\n");
 630     wine_wgl.p_wglFinish();
 631 }
 632
 633 /***********************************************************************
 634  *              glFlush (OPENGL32.@)
 635  */
 636 void WINAPI wine_glFlush( void )
 637 {
 638     TRACE("()\n");
 639     wine_wgl.p_wglFlush();
 640 }
 641
 642 /***********************************************************************
 643  *              glGetString (OPENGL32.@)
 644  */
 645 const GLubyte * WINAPI wine_glGetString( GLenum name )
 646 {
 647   const GLubyte *ret;
 648   const char* GL_Extensions = NULL;
 649
 650   /* this is for buggy nvidia driver, crashing if called from a different
 651      thread with no context */
 652   if(wglGetCurrentContext() == NULL)
 653     return NULL;
 654
 655   if (GL_EXTENSIONS != name) {
 656     ENTER_GL();
 657     ret = glGetString(name);
 658     LEAVE_GL();
 659     return ret;
 660   }
 661
 662   if (NULL == internal_gl_extensions) {
 663     ENTER_GL();
 664     GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
 665
 666     if (GL_Extensions)
 667     {
 668       size_t len = strlen(GL_Extensions);
 669       internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
 670
 671       TRACE("GL_EXTENSIONS reported:\n");
 672       while (*GL_Extensions != 0x00) {
 673         const char* Start = GL_Extensions;
 674         char        ThisExtn[256];
 675
 676         while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
 677           GL_Extensions++;
 678         }
 679         memcpy(ThisExtn, Start, (GL_Extensions - Start));
 680         ThisExtn[GL_Extensions - Start] = 0;
 681         TRACE("- %s:", ThisExtn);
 682
 683         /* test if supported API is disabled by config */
 684         if (!internal_gl_disabled_extensions || !strstr(internal_gl_disabled_extensions, ThisExtn)) {
 685           strcat(internal_gl_extensions, " ");
 686           strcat(internal_gl_extensions, ThisExtn);
 687           TRACE(" active\n");
 688         } else {
 689           TRACE(" deactived (by config)\n");
 690         }
 691
 692         if (*GL_Extensions == ' ') GL_Extensions++;
 693       }
 694     }
 695     LEAVE_GL();
 696   }
 697   return (const GLubyte *) internal_gl_extensions;
 698 }
 699
 700 /***********************************************************************
 701  *              glGetIntegerv (OPENGL32.@)
 702  */
 703 void WINAPI wine_glGetIntegerv( GLenum pname, GLint* params )
 704 {
 705     wine_wgl.p_wglGetIntegerv(pname, params);
 706 }
 707
 708 /***********************************************************************
 709  *              wglSwapBuffers (OPENGL32.@)
 710  */
 711 BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc )
 712 {
 713     return SwapBuffers(hdc);
 714 }
 715
 716 /* This is for brain-dead applications that use OpenGL functions before even
 717    creating a rendering context.... */
 718 static BOOL process_attach(void)
 719 {
 720   HMODULE mod_x11, mod_gdi32;
 721   DWORD size;
 722   HKEY hkey = 0;
 723
 724   GetDesktopWindow();  /* make sure winex11 is loaded (FIXME) */
 725   mod_x11 = GetModuleHandleA( "winex11.drv" );
 726   mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
 727
 728   if (!mod_x11 || !mod_gdi32)
 729   {
 730       ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
 731       return FALSE;
 732   }
 733
 734   wine_tsx11_lock_ptr   = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
 735   wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
 736
 737   wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
 738   wine_wgl.p_wglMakeCurrent = (void *)GetProcAddress(mod_gdi32, "wglMakeCurrent");
 739   wine_wgl.p_wglCreateContext = (void *)GetProcAddress(mod_gdi32, "wglCreateContext");
 740
 741   /* Interal WGL function */
 742   wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
 743   wine_wgl.p_wglFinish = (void *)wine_wgl.p_wglGetProcAddress("wglFinish");
 744   wine_wgl.p_wglFlush = (void *)wine_wgl.p_wglGetProcAddress("wglFlush");
 745
 746   if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
 747     if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size)) {
 748       internal_gl_disabled_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
 749       RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size);
 750       TRACE("found DisabledExtensions=%s\n", debugstr_a(internal_gl_disabled_extensions));
 751     }
 752     RegCloseKey(hkey);
 753   }
 754
 755   return TRUE;
 756 }
 757
 758
 759 /**********************************************************************/
 760
 761 static void process_detach(void)
 762 {
 763   if (libglu_handle) wine_dlclose(libglu_handle, NULL, 0);
 764   HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
 765   HeapFree(GetProcessHeap(), 0, internal_gl_disabled_extensions);
 766 }
 767
 768 /***********************************************************************
 769  *           OpenGL initialisation routine
 770  */
 771 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 772 {
 773     switch(reason)
 774     {
 775     case DLL_PROCESS_ATTACH:
 776         opengl32_handle = hinst;
 777         DisableThreadLibraryCalls(hinst);
 778         return process_attach();
 779     case DLL_PROCESS_DETACH:
 780         process_detach();
 781         break;
 782     }
 783     return TRUE;
 784 }