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