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_SetPixelFormat)(HDC hdc, INT iPixelFormat, const PIXELFORMATDESCRIPTOR *ppfd);
  52     BOOL  (WINAPI *p_wglCopyContext)(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask);
  53     BOOL  (WINAPI *p_wglDeleteContext)(HGLRC hglrc);
  54     BOOL  (WINAPI *p_wglMakeCurrent)(HDC hdc, HGLRC hglrc);
  55     BOOL  (WINAPI *p_wglShareLists)(HGLRC hglrc1, HGLRC hglrc2);
  56     BOOL  (WINAPI *p_wglUseFontBitmapsA)(HDC hdc, DWORD first, DWORD count, DWORD listBase);
  57     BOOL  (WINAPI *p_wglUseFontBitmapsW)(HDC hdc, DWORD first, DWORD count, DWORD listBase);
  58     HDC   (WINAPI *p_wglGetCurrentDC)(void);
  59     HGLRC (WINAPI *p_wglCreateContext)(HDC hdc);
  60     HGLRC (WINAPI *p_wglGetCurrentContext)(void);
  61     INT   (WINAPI *p_ChoosePixelFormat)(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd);
  62     INT   (WINAPI *p_DescribePixelFormat)(HDC hdc, INT iPixelFormat, UINT nBytes, LPPIXELFORMATDESCRIPTOR ppfd);
  63     INT   (WINAPI *p_GetPixelFormat)(HDC hdc);
  64
  65     /* Interal WGL function */
  66     void  (WINAPI *p_wglGetIntegerv)(GLenum pname, GLint* params);
  67     void  (WINAPI *p_wglFinish)(void);
  68     void  (WINAPI *p_wglFlush)(void);
  69 } wine_wgl;
  70
  71 #ifdef SONAME_LIBGLU
  72 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
  73 MAKE_FUNCPTR(gluNewTess)
  74 MAKE_FUNCPTR(gluDeleteTess)
  75 MAKE_FUNCPTR(gluTessBeginContour)
  76 MAKE_FUNCPTR(gluTessBeginPolygon)
  77 MAKE_FUNCPTR(gluTessCallback)
  78 MAKE_FUNCPTR(gluTessEndContour)
  79 MAKE_FUNCPTR(gluTessEndPolygon)
  80 MAKE_FUNCPTR(gluTessVertex)
  81 #undef MAKE_FUNCPTR
  82 #endif /* SONAME_LIBGLU */
  83
  84 /* x11drv GDI escapes */
  85 #define X11DRV_ESCAPE 6789
  86 enum x11drv_escape_codes
  87 {
  88     X11DRV_GET_DISPLAY,         /* get X11 display for a DC */
  89     X11DRV_GET_DRAWABLE,        /* get current drawable for a DC */
  90     X11DRV_GET_FONT,            /* get current X font for a DC */
  91     X11DRV_SET_DRAWABLE,        /* set current drawable for a DC */
  92     X11DRV_START_EXPOSURES,     /* start graphics exposures */
  93     X11DRV_END_EXPOSURES,       /* end graphics exposures */
  94     X11DRV_GET_DCE,             /* get the DCE pointer */
  95     X11DRV_SET_DCE,             /* set the DCE pointer */
  96     X11DRV_GET_GLX_DRAWABLE,    /* get current glx drawable for a DC */
  97     X11DRV_SYNC_PIXMAP          /* sync the dibsection to its pixmap */
  98 };
  99
 100 void (*wine_tsx11_lock_ptr)(void) = NULL;
 101 void (*wine_tsx11_unlock_ptr)(void) = NULL;
 102
 103 static HMODULE opengl32_handle;
 104 static void* libglu_handle = NULL;
 105
 106 static char* internal_gl_disabled_extensions = NULL;
 107 static char* internal_gl_extensions = NULL;
 108
 109 typedef struct wine_glcontext {
 110   HDC hdc;
 111   BOOL do_escape;
 112   /* ... more stuff here */
 113 } Wine_GLContext;
 114
 115 void enter_gl(void)
 116 {
 117     Wine_GLContext *curctx = NtCurrentTeb()->glContext;
 118
 119     if (curctx && curctx->do_escape)
 120     {
 121         enum x11drv_escape_codes escape = X11DRV_SYNC_PIXMAP;
 122         ExtEscape(curctx->hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL);
 123     }
 124
 125     wine_tsx11_lock_ptr();
 126     return;
 127 }
 128
 129 const GLubyte * WINAPI wine_glGetString( GLenum name );
 130
 131 /***********************************************************************
 132  *               wglSetPixelFormat(OPENGL32.@)
 133  */
 134 BOOL WINAPI wglSetPixelFormat( HDC hdc, INT iPixelFormat,
 135                                const PIXELFORMATDESCRIPTOR *ppfd)
 136 {
 137   return wine_wgl.p_SetPixelFormat(hdc, iPixelFormat, ppfd);
 138 }
 139
 140 /***********************************************************************
 141  *              wglCopyContext (OPENGL32.@)
 142  */
 143 BOOL WINAPI wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask)
 144 {
 145   return wine_wgl.p_wglCopyContext(hglrcSrc, hglrcDst, mask);
 146 }
 147
 148 /***********************************************************************
 149  *              wglDeleteContext (OPENGL32.@)
 150  */
 151 BOOL WINAPI wglDeleteContext(HGLRC hglrc)
 152 {
 153   return wine_wgl.p_wglDeleteContext(hglrc);
 154 }
 155
 156 /***********************************************************************
 157  *              wglMakeCurrent (OPENGL32.@)
 158  */
 159 BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
 160 {
 161   return wine_wgl.p_wglMakeCurrent(hdc, hglrc);
 162 }
 163
 164 /***********************************************************************
 165  *              wglShareLists (OPENGL32.@)
 166  */
 167 BOOL WINAPI wglShareLists(HGLRC hglrc1, HGLRC hglrc2)
 168 {
 169   return wine_wgl.p_wglShareLists(hglrc1, hglrc2);
 170 }
 171
 172 /***********************************************************************
 173  *              wglUseFontBitmapsA (OPENGL32.@)
 174  */
 175 BOOL WINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase)
 176 {
 177   return wine_wgl.p_wglUseFontBitmapsA(hdc, first, count, listBase);
 178 }
 179
 180 /***********************************************************************
 181  *              wglUseFontBitmapsW (OPENGL32.@)
 182  */
 183 BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase)
 184 {
 185   return wine_wgl.p_wglUseFontBitmapsW(hdc, first, count, listBase);
 186 }
 187
 188 /***********************************************************************
 189  *              wglGetCurrentDC (OPENGL32.@)
 190  */
 191 HDC WINAPI wglGetCurrentDC(void)
 192 {
 193   return wine_wgl.p_wglGetCurrentDC();
 194 }
 195
 196 /***********************************************************************
 197  *              wglCreateContext (OPENGL32.@)
 198  */
 199 HGLRC WINAPI wglCreateContext(HDC hdc)
 200 {
 201   return wine_wgl.p_wglCreateContext(hdc);
 202 }
 203
 204 /***********************************************************************
 205  *              wglGetCurrentContext (OPENGL32.@)
 206  */
 207 HGLRC WINAPI wglGetCurrentContext(void)
 208 {
 209   return wine_wgl.p_wglGetCurrentContext();
 210 }
 211
 212 /***********************************************************************
 213  *              wglChoosePixelFormat (OPENGL32.@)
 214  */
 215 INT WINAPI wglChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd)
 216 {
 217   return wine_wgl.p_ChoosePixelFormat(hdc, ppfd);
 218 }
 219
 220 /***********************************************************************
 221  *              wglDescribePixelFormat (OPENGL32.@)
 222  */
 223 INT WINAPI wglDescribePixelFormat(HDC hdc, INT iPixelFormat, UINT nBytes,
 224                                 LPPIXELFORMATDESCRIPTOR ppfd)
 225 {
 226   return wine_wgl.p_DescribePixelFormat(hdc, iPixelFormat, nBytes, ppfd);
 227 }
 228 /***********************************************************************
 229  *              wglGetPixelFormat (OPENGL32.@)
 230  */
 231 INT WINAPI wglGetPixelFormat(HDC hdc)
 232 {
 233   return wine_wgl.p_GetPixelFormat(hdc);
 234 }
 235
 236 /***********************************************************************
 237  *              wglCreateLayerContext (OPENGL32.@)
 238  */
 239 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
 240                                    int iLayerPlane) {
 241   TRACE("(%p,%d)\n", hdc, iLayerPlane);
 242
 243   if (iLayerPlane == 0) {
 244       return wglCreateContext(hdc);
 245   }
 246   FIXME(" no handler for layer %d\n", iLayerPlane);
 247
 248   return NULL;
 249 }
 250
 251 /***********************************************************************
 252  *              wglDescribeLayerPlane (OPENGL32.@)
 253  */
 254 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
 255                                   int iPixelFormat,
 256                                   int iLayerPlane,
 257                                   UINT nBytes,
 258                                   LPLAYERPLANEDESCRIPTOR plpd) {
 259   FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
 260
 261   return FALSE;
 262 }
 263
 264 /***********************************************************************
 265  *              wglGetLayerPaletteEntries (OPENGL32.@)
 266  */
 267 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
 268                                      int iLayerPlane,
 269                                      int iStart,
 270                                      int cEntries,
 271                                      const COLORREF *pcr) {
 272   FIXME("(): stub !\n");
 273
 274   return 0;
 275 }
 276
 277 static int compar(const void *elt_a, const void *elt_b) {
 278   return strcmp(((const OpenGL_extension *) elt_a)->name,
 279                 ((const OpenGL_extension *) elt_b)->name);
 280 }
 281
 282 /* Check if a GL extension is supported */
 283 static BOOL is_extension_supported(const char* extension)
 284 {
 285     const char *gl_ext_string = (const char*)wine_glGetString(GL_EXTENSIONS);
 286
 287     TRACE("Checking for extension '%s'\n", extension);
 288
 289     if(!gl_ext_string) {
 290         ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
 291         return FALSE;
 292     }
 293
 294     /* We use the GetProcAddress function from the display driver to retrieve function pointers
 295      * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
 296      * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
 297      * require the function to return NULL when a extension isn't found. For this reason we check
 298      * if the OpenGL extension required for the function we are looking up is supported. */
 299
 300     /* Check if the extension is part of the GL extension string to see if it is supported. */
 301     if(strstr(gl_ext_string, extension) != NULL)
 302         return TRUE;
 303
 304     /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
 305      * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
 306      * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
 307      * Check if we are searching for a core GL function */
 308     if(strncmp(extension, "GL_VERSION_", 11) == 0)
 309     {
 310         const GLubyte *gl_version = glGetString(GL_VERSION);
 311         const char *version = extension + 11; /* Move past 'GL_VERSION_' */
 312
 313         if(!gl_version) {
 314             ERR("Error no OpenGL version found,\n");
 315             return FALSE;
 316         }
 317
 318         /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
 319          * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
 320         if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
 321             return TRUE;
 322         }
 323         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]);
 324     }
 325
 326     return FALSE;
 327 }
 328
 329 /***********************************************************************
 330  *              wglGetProcAddress (OPENGL32.@)
 331  */
 332 PROC WINAPI wglGetProcAddress(LPCSTR  lpszProc) {
 333   void *local_func;
 334   OpenGL_extension  ext;
 335   const OpenGL_extension *ext_ret;
 336
 337   TRACE("(%s)\n", lpszProc);
 338
 339   if(lpszProc == NULL)
 340     return NULL;
 341
 342   /* First, look if it's not already defined in the 'standard' OpenGL functions */
 343   if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
 344     TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
 345     return local_func;
 346   }
 347
 348   /* After that, search in the thunks to find the real name of the extension */
 349   ext.name = lpszProc;
 350   ext_ret = bsearch(&ext, extension_registry, extension_registry_size,
 351                     sizeof(OpenGL_extension), compar);
 352
 353   /* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
 354   if (ext_ret == NULL) {
 355     /* If the function name starts with a w it is a WGL extension */
 356     if(lpszProc[0] == 'w')
 357       return wine_wgl.p_wglGetProcAddress(lpszProc);
 358
 359     /* We are dealing with an unknown GL extension. */
 360     WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
 361     return NULL;
 362   } else { /* We are looking for an OpenGL extension */
 363
 364     /* Check if the GL extension required by the function is available */
 365     if(!is_extension_supported(ext_ret->extension)) {
 366         WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
 367     }
 368
 369     local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
 370
 371     /* After that, look at the extensions defined in the Linux OpenGL library */
 372     if (local_func == NULL) {
 373       char buf[256];
 374       void *ret = NULL;
 375
 376       /* Remove the 3 last letters (EXT, ARB, ...).
 377
 378          I know that some extensions have more than 3 letters (MESA, NV,
 379          INTEL, ...), but this is only a stop-gap measure to fix buggy
 380          OpenGL drivers (moreover, it is only useful for old 1.0 apps
 381          that query the glBindTextureEXT extension).
 382       */
 383       memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
 384       buf[strlen(ext_ret->name) - 3] = '\0';
 385       TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
 386
 387       ret = GetProcAddress(opengl32_handle, buf);
 388       if (ret != NULL) {
 389         TRACE(" found function in main OpenGL library (%p) !\n", ret);
 390       } else {
 391         WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
 392       }
 393
 394       return ret;
 395     } else {
 396       TRACE(" returning function  (%p)\n", ext_ret->func);
 397       extension_funcs[ext_ret - extension_registry] = local_func;
 398
 399       return ext_ret->func;
 400     }
 401   }
 402 }
 403
 404 /***********************************************************************
 405  *              wglRealizeLayerPalette (OPENGL32.@)
 406  */
 407 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
 408                                    int iLayerPlane,
 409                                    BOOL bRealize) {
 410   FIXME("()\n");
 411
 412   return FALSE;
 413 }
 414
 415 /***********************************************************************
 416  *              wglSetLayerPaletteEntries (OPENGL32.@)
 417  */
 418 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
 419                                      int iLayerPlane,
 420                                      int iStart,
 421                                      int cEntries,
 422                                      const COLORREF *pcr) {
 423   FIXME("(): stub !\n");
 424
 425   return 0;
 426 }
 427
 428 /***********************************************************************
 429  *              wglSwapLayerBuffers (OPENGL32.@)
 430  */
 431 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
 432                                 UINT fuPlanes) {
 433   TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
 434
 435   if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
 436     if (!SwapBuffers(hdc)) return FALSE;
 437     fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
 438   }
 439
 440   if (fuPlanes) {
 441     WARN("Following layers unhandled : %08x\n", fuPlanes);
 442   }
 443
 444   return TRUE;
 445 }
 446
 447 #ifdef SONAME_LIBGLU
 448
 449 static void *load_libglu(void)
 450 {
 451     static int already_loaded;
 452     void *handle;
 453
 454     if (already_loaded) return libglu_handle;
 455     already_loaded = 1;
 456
 457     TRACE("Trying to load GLU library: %s\n", SONAME_LIBGLU);
 458     handle = wine_dlopen(SONAME_LIBGLU, RTLD_NOW, NULL, 0);
 459     if (!handle)
 460     {
 461         WARN("Failed to load %s\n", SONAME_LIBGLU);
 462         return NULL;
 463     }
 464
 465 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(handle, #f, NULL, 0)) == NULL) goto sym_not_found;
 466 LOAD_FUNCPTR(gluNewTess)
 467 LOAD_FUNCPTR(gluDeleteTess)
 468 LOAD_FUNCPTR(gluTessBeginContour)
 469 LOAD_FUNCPTR(gluTessBeginPolygon)
 470 LOAD_FUNCPTR(gluTessCallback)
 471 LOAD_FUNCPTR(gluTessEndContour)
 472 LOAD_FUNCPTR(gluTessEndPolygon)
 473 LOAD_FUNCPTR(gluTessVertex)
 474 #undef LOAD_FUNCPTR
 475     libglu_handle = handle;
 476     return handle;
 477
 478 sym_not_found:
 479     WARN("Unable to load function ptrs from libGLU\n");
 480     /* Close the library as we won't use it */
 481     wine_dlclose(handle, NULL, 0);
 482     return NULL;
 483 }
 484
 485 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
 486 {
 487     vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
 488     vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
 489     vertex[2] = 0.0;
 490 }
 491
 492 static void tess_callback_vertex(GLvoid *vertex)
 493 {
 494     GLdouble *dbl = vertex;
 495     TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
 496     glVertex3dv(vertex);
 497 }
 498
 499 static void tess_callback_begin(GLenum which)
 500 {
 501     TRACE("%d\n", which);
 502     glBegin(which);
 503 }
 504
 505 static void tess_callback_end(void)
 506 {
 507     TRACE("\n");
 508     glEnd();
 509 }
 510
 511 /***********************************************************************
 512  *              wglUseFontOutlines_common
 513  */
 514 static BOOL wglUseFontOutlines_common(HDC hdc,
 515                                       DWORD first,
 516                                       DWORD count,
 517                                       DWORD listBase,
 518                                       FLOAT deviation,
 519                                       FLOAT extrusion,
 520                                       int format,
 521                                       LPGLYPHMETRICSFLOAT lpgmf,
 522                                       BOOL unicode)
 523 {
 524     UINT glyph;
 525     const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
 526     GLUtesselator *tess;
 527     LOGFONTW lf;
 528     HFONT old_font, unscaled_font;
 529     UINT em_size = 1024;
 530     RECT rc;
 531
 532     TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
 533           listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
 534
 535     if (!load_libglu())
 536     {
 537         ERR("libGLU is required for this function but isn't loaded\n");
 538         return FALSE;
 539     }
 540
 541     ENTER_GL();
 542     tess = pgluNewTess();
 543     if(tess)
 544     {
 545         pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
 546         pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
 547         pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
 548     }
 549     LEAVE_GL();
 550
 551     if(!tess) return FALSE;
 552
 553     GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
 554     rc.left = rc.right = rc.bottom = 0;
 555     rc.top = em_size;
 556     DPtoLP(hdc, (POINT*)&rc, 2);
 557     lf.lfHeight = -abs(rc.top - rc.bottom);
 558     lf.lfOrientation = lf.lfEscapement = 0;
 559     unscaled_font = CreateFontIndirectW(&lf);
 560     old_font = SelectObject(hdc, unscaled_font);
 561
 562     for (glyph = first; glyph < first + count; glyph++)
 563     {
 564         DWORD needed;
 565         GLYPHMETRICS gm;
 566         BYTE *buf;
 567         TTPOLYGONHEADER *pph;
 568         TTPOLYCURVE *ppc;
 569         GLdouble *vertices;
 570
 571         if(unicode)
 572             needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
 573         else
 574             needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
 575
 576         if(needed == GDI_ERROR)
 577             goto error;
 578
 579         buf = HeapAlloc(GetProcessHeap(), 0, needed);
 580         vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
 581
 582         if(unicode)
 583             GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
 584         else
 585             GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
 586
 587         TRACE("glyph %d\n", glyph);
 588
 589         if(lpgmf)
 590         {
 591             lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
 592             lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
 593             lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
 594             lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
 595             lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
 596             lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
 597
 598             TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
 599                   lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
 600             lpgmf++;
 601         }
 602
 603         ENTER_GL();
 604         glNewList(listBase++, GL_COMPILE);
 605         pgluTessBeginPolygon(tess, NULL);
 606
 607         pph = (TTPOLYGONHEADER*)buf;
 608         while((BYTE*)pph < buf + needed)
 609         {
 610             TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
 611
 612             pgluTessBeginContour(tess);
 613
 614             fixed_to_double(pph->pfxStart, em_size, vertices);
 615             pgluTessVertex(tess, vertices, vertices);
 616             vertices += 3;
 617
 618             ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
 619             while((char*)ppc < (char*)pph + pph->cb)
 620             {
 621                 int i;
 622
 623                 switch(ppc->wType) {
 624                 case TT_PRIM_LINE:
 625                     for(i = 0; i < ppc->cpfx; i++)
 626                     {
 627                         TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
 628                         fixed_to_double(ppc->apfx[i], em_size, vertices);
 629                         pgluTessVertex(tess, vertices, vertices);
 630                         vertices += 3;
 631                     }
 632                     break;
 633
 634                 case TT_PRIM_QSPLINE:
 635                     for(i = 0; i < ppc->cpfx/2; i++)
 636                     {
 637                         /* FIXME just connecting the control points for now */
 638                         TRACE("\t\tcurve  %d,%d %d,%d\n",
 639                               ppc->apfx[i * 2].x.value,     ppc->apfx[i * 3].y.value,
 640                               ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
 641                         fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
 642                         pgluTessVertex(tess, vertices, vertices);
 643                         vertices += 3;
 644                         fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
 645                         pgluTessVertex(tess, vertices, vertices);
 646                         vertices += 3;
 647                     }
 648                     break;
 649                 default:
 650                     ERR("\t\tcurve type = %d\n", ppc->wType);
 651                     pgluTessEndContour(tess);
 652                     goto error_in_list;
 653                 }
 654
 655                 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
 656                                      (ppc->cpfx - 1) * sizeof(POINTFX));
 657             }
 658             pgluTessEndContour(tess);
 659             pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
 660         }
 661
 662 error_in_list:
 663         pgluTessEndPolygon(tess);
 664         glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
 665         glEndList();
 666         LEAVE_GL();
 667         HeapFree(GetProcessHeap(), 0, buf);
 668         HeapFree(GetProcessHeap(), 0, vertices);
 669     }
 670
 671  error:
 672     DeleteObject(SelectObject(hdc, old_font));
 673     pgluDeleteTess(tess);
 674     return TRUE;
 675
 676 }
 677
 678 #else /* SONAME_LIBGLU */
 679
 680 static BOOL wglUseFontOutlines_common(HDC hdc,
 681                                       DWORD first,
 682                                       DWORD count,
 683                                       DWORD listBase,
 684                                       FLOAT deviation,
 685                                       FLOAT extrusion,
 686                                       int format,
 687                                       LPGLYPHMETRICSFLOAT lpgmf,
 688                                       BOOL unicode)
 689 {
 690     FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
 691     return FALSE;
 692 }
 693
 694 #endif /* SONAME_LIBGLU */
 695
 696 /***********************************************************************
 697  *              wglUseFontOutlinesA (OPENGL32.@)
 698  */
 699 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
 700                                 DWORD first,
 701                                 DWORD count,
 702                                 DWORD listBase,
 703                                 FLOAT deviation,
 704                                 FLOAT extrusion,
 705                                 int format,
 706                                 LPGLYPHMETRICSFLOAT lpgmf)
 707 {
 708     return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
 709 }
 710
 711 /***********************************************************************
 712  *              wglUseFontOutlinesW (OPENGL32.@)
 713  */
 714 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
 715                                 DWORD first,
 716                                 DWORD count,
 717                                 DWORD listBase,
 718                                 FLOAT deviation,
 719                                 FLOAT extrusion,
 720                                 int format,
 721                                 LPGLYPHMETRICSFLOAT lpgmf)
 722 {
 723     return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
 724 }
 725
 726 /***********************************************************************
 727  *              glFinish (OPENGL32.@)
 728  */
 729 void WINAPI wine_glFinish( void )
 730 {
 731     TRACE("()\n");
 732     wine_wgl.p_wglFinish();
 733 }
 734
 735 /***********************************************************************
 736  *              glFlush (OPENGL32.@)
 737  */
 738 void WINAPI wine_glFlush( void )
 739 {
 740     TRACE("()\n");
 741     wine_wgl.p_wglFlush();
 742 }
 743
 744 /***********************************************************************
 745  *              glGetString (OPENGL32.@)
 746  */
 747 const GLubyte * WINAPI wine_glGetString( GLenum name )
 748 {
 749   const GLubyte *ret;
 750   const char* GL_Extensions = NULL;
 751
 752   /* this is for buggy nvidia driver, crashing if called from a different
 753      thread with no context */
 754   if(wglGetCurrentContext() == NULL)
 755     return NULL;
 756
 757   if (GL_EXTENSIONS != name) {
 758     ENTER_GL();
 759     ret = glGetString(name);
 760     LEAVE_GL();
 761     return ret;
 762   }
 763
 764   if (NULL == internal_gl_extensions) {
 765     ENTER_GL();
 766     GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
 767
 768     if (GL_Extensions)
 769     {
 770       size_t len = strlen(GL_Extensions);
 771       internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
 772
 773       TRACE("GL_EXTENSIONS reported:\n");
 774       while (*GL_Extensions != 0x00) {
 775         const char* Start = GL_Extensions;
 776         char        ThisExtn[256];
 777
 778         while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
 779           GL_Extensions++;
 780         }
 781         memcpy(ThisExtn, Start, (GL_Extensions - Start));
 782         ThisExtn[GL_Extensions - Start] = 0;
 783         TRACE("- %s:", ThisExtn);
 784
 785         /* test if supported API is disabled by config */
 786         if (!internal_gl_disabled_extensions || !strstr(internal_gl_disabled_extensions, ThisExtn)) {
 787           strcat(internal_gl_extensions, " ");
 788           strcat(internal_gl_extensions, ThisExtn);
 789           TRACE(" active\n");
 790         } else {
 791           TRACE(" deactived (by config)\n");
 792         }
 793
 794         if (*GL_Extensions == ' ') GL_Extensions++;
 795       }
 796     }
 797     LEAVE_GL();
 798   }
 799   return (const GLubyte *) internal_gl_extensions;
 800 }
 801
 802 /***********************************************************************
 803  *              glGetIntegerv (OPENGL32.@)
 804  */
 805 void WINAPI wine_glGetIntegerv( GLenum pname, GLint* params )
 806 {
 807     wine_wgl.p_wglGetIntegerv(pname, params);
 808 }
 809
 810 /***********************************************************************
 811  *              wglSwapBuffers (OPENGL32.@)
 812  */
 813 BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc )
 814 {
 815     return SwapBuffers(hdc);
 816 }
 817
 818 /* This is for brain-dead applications that use OpenGL functions before even
 819    creating a rendering context.... */
 820 static BOOL process_attach(void)
 821 {
 822   HMODULE mod_x11, mod_gdi32;
 823   DWORD size;
 824   HKEY hkey = 0;
 825
 826   GetDesktopWindow();  /* make sure winex11 is loaded (FIXME) */
 827   mod_x11 = GetModuleHandleA( "winex11.drv" );
 828   mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
 829
 830   if (!mod_x11 || !mod_gdi32)
 831   {
 832       ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
 833       return FALSE;
 834   }
 835
 836   wine_tsx11_lock_ptr   = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
 837   wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
 838
 839   wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
 840   wine_wgl.p_SetPixelFormat = (void *)GetProcAddress(mod_gdi32, "SetPixelFormat");
 841   wine_wgl.p_wglCopyContext = (void *)GetProcAddress(mod_gdi32, "wglCopyContext");
 842   wine_wgl.p_wglDeleteContext = (void *)GetProcAddress(mod_gdi32, "wglDeleteContext");
 843   wine_wgl.p_wglMakeCurrent = (void *)GetProcAddress(mod_gdi32, "wglMakeCurrent");
 844   wine_wgl.p_wglShareLists = (void *)GetProcAddress(mod_gdi32, "wglShareLists");
 845   wine_wgl.p_wglUseFontBitmapsA = (void *)GetProcAddress(mod_gdi32, "wglUseFontBitmapsA");
 846   wine_wgl.p_wglUseFontBitmapsW = (void *)GetProcAddress(mod_gdi32, "wglUseFontBitmapsW");
 847   wine_wgl.p_wglGetCurrentDC = (void *)GetProcAddress(mod_gdi32, "wglGetCurrentDC");
 848   wine_wgl.p_wglCreateContext = (void *)GetProcAddress(mod_gdi32, "wglCreateContext");
 849   wine_wgl.p_wglGetCurrentContext = (void *)GetProcAddress(mod_gdi32, "wglGetCurrentContext");
 850   wine_wgl.p_ChoosePixelFormat = (void *)GetProcAddress(mod_gdi32, "ChoosePixelFormat");
 851   wine_wgl.p_DescribePixelFormat = (void *)GetProcAddress(mod_gdi32, "DescribePixelFormat");
 852   wine_wgl.p_GetPixelFormat = (void *)GetProcAddress(mod_gdi32, "GetPixelFormat");
 853
 854   /* Interal WGL function */
 855   wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
 856   wine_wgl.p_wglFinish = (void *)wine_wgl.p_wglGetProcAddress("wglFinish");
 857   wine_wgl.p_wglFlush = (void *)wine_wgl.p_wglGetProcAddress("wglFlush");
 858
 859   if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
 860     if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size)) {
 861       internal_gl_disabled_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
 862       RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size);
 863       TRACE("found DisabledExtensions=%s\n", debugstr_a(internal_gl_disabled_extensions));
 864     }
 865     RegCloseKey(hkey);
 866   }
 867
 868   return TRUE;
 869 }
 870
 871
 872 /**********************************************************************/
 873
 874 static void process_detach(void)
 875 {
 876   if (libglu_handle) wine_dlclose(libglu_handle, NULL, 0);
 877   HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
 878   HeapFree(GetProcessHeap(), 0, internal_gl_disabled_extensions);
 879 }
 880
 881 /***********************************************************************
 882  *           OpenGL initialisation routine
 883  */
 884 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 885 {
 886     switch(reason)
 887     {
 888     case DLL_PROCESS_ATTACH:
 889         opengl32_handle = hinst;
 890         DisableThreadLibraryCalls(hinst);
 891         return process_attach();
 892     case DLL_PROCESS_DETACH:
 893         process_detach();
 894         break;
 895     }
 896     return TRUE;
 897 }