dlls/winex11.drv/opengl.c

   1 /*
   2  * X11DRV OpenGL functions
   3  *
   4  * Copyright 2000 Lionel Ulmer
   5  * Copyright 2005 Alex Woods
   6  * Copyright 2005 Raphael Junqueira
   7  * Copyright 2006-2009 Roderick Colenbrander
   8  * Copyright 2006 Tomas Carnecky
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <assert.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include "x11drv.h"
  33 #include "winternl.h"
  34 #include "wine/library.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(wgl);
  38
  39 #ifdef SONAME_LIBGL
  40
  41 #undef APIENTRY
  42 #undef CALLBACK
  43 #undef WINAPI
  44
  45 #ifdef HAVE_GL_GL_H
  46 # include <GL/gl.h>
  47 #endif
  48 #ifdef HAVE_GL_GLX_H
  49 # include <GL/glx.h>
  50 #endif
  51 #ifdef HAVE_GL_GLEXT_H
  52 # include <GL/glext.h>
  53 #endif
  54
  55 #include "wine/wgl.h"
  56
  57 #undef APIENTRY
  58 #undef CALLBACK
  59 #undef WINAPI
  60
  61 /* Redefines the constants */
  62 #define CALLBACK    __stdcall
  63 #define WINAPI      __stdcall
  64 #define APIENTRY    WINAPI
  65
  66
  67 WINE_DECLARE_DEBUG_CHANNEL(fps);
  68
  69 typedef struct wine_glextension {
  70     const char *extName;
  71     struct {
  72         const char *funcName;
  73         void *funcAddress;
  74     } extEntryPoints[9];
  75 } WineGLExtension;
  76
  77 struct WineGLInfo {
  78     const char *glVersion;
  79     char *glExtensions;
  80
  81     int glxVersion[2];
  82
  83     const char *glxServerVersion;
  84     const char *glxServerVendor;
  85     const char *glxServerExtensions;
  86
  87     const char *glxClientVersion;
  88     const char *glxClientVendor;
  89     const char *glxClientExtensions;
  90
  91     const char *glxExtensions;
  92
  93     BOOL glxDirect;
  94     char wglExtensions[4096];
  95 };
  96
  97 typedef struct wine_glpixelformat {
  98     int         iPixelFormat;
  99     GLXFBConfig fbconfig;
 100     int         fmt_id;
 101     int         render_type;
 102     BOOL        offscreenOnly;
 103     DWORD       dwFlags; /* We store some PFD_* flags in here for emulated bitmap formats */
 104 } WineGLPixelFormat;
 105
 106 typedef struct wine_glcontext {
 107     HDC hdc;
 108     BOOL do_escape;
 109     XVisualInfo *vis;
 110     WineGLPixelFormat *fmt;
 111     GLXContext ctx;
 112     HDC read_hdc;
 113     Drawable drawables[2];
 114     BOOL refresh_drawables;
 115     struct wine_glcontext *next;
 116     struct wine_glcontext *prev;
 117 } Wine_GLContext;
 118
 119 typedef struct wine_glpbuffer {
 120     Drawable   drawable;
 121     Display*   display;
 122     WineGLPixelFormat* fmt;
 123     int        width;
 124     int        height;
 125     int*       attribList;
 126     HDC        hdc;
 127
 128     int        use_render_texture; /* This is also the internal texture format */
 129     int        texture_bind_target;
 130     int        texture_bpp;
 131     GLint      texture_format;
 132     GLuint     texture_target;
 133     GLenum     texture_type;
 134     GLuint     texture;
 135     int        texture_level;
 136 } Wine_GLPBuffer;
 137
 138 static Wine_GLContext *context_list;
 139 static struct WineGLInfo WineGLInfo = { 0 };
 140 static int use_render_texture_emulation = 1;
 141 static int use_render_texture_ati = 0;
 142 static int swap_interval = 1;
 143
 144 #define MAX_EXTENSIONS 16
 145 static const WineGLExtension *WineGLExtensionList[MAX_EXTENSIONS];
 146 static int WineGLExtensionListSize;
 147
 148 static void X11DRV_WineGL_LoadExtensions(void);
 149 static WineGLPixelFormat* ConvertPixelFormatWGLtoGLX(Display *display, int iPixelFormat, BOOL AllowOffscreen, int *fmt_count);
 150 static BOOL glxRequireVersion(int requiredVersion);
 151 static BOOL glxRequireExtension(const char *requiredExtension);
 152
 153 static void dump_PIXELFORMATDESCRIPTOR(const PIXELFORMATDESCRIPTOR *ppfd) {
 154   TRACE("  - size / version : %d / %d\n", ppfd->nSize, ppfd->nVersion);
 155   TRACE("  - dwFlags : ");
 156 #define TEST_AND_DUMP(t,tv) if ((t) & (tv)) TRACE(#tv " ")
 157   TEST_AND_DUMP(ppfd->dwFlags, PFD_DEPTH_DONTCARE);
 158   TEST_AND_DUMP(ppfd->dwFlags, PFD_DOUBLEBUFFER);
 159   TEST_AND_DUMP(ppfd->dwFlags, PFD_DOUBLEBUFFER_DONTCARE);
 160   TEST_AND_DUMP(ppfd->dwFlags, PFD_DRAW_TO_WINDOW);
 161   TEST_AND_DUMP(ppfd->dwFlags, PFD_DRAW_TO_BITMAP);
 162   TEST_AND_DUMP(ppfd->dwFlags, PFD_GENERIC_ACCELERATED);
 163   TEST_AND_DUMP(ppfd->dwFlags, PFD_GENERIC_FORMAT);
 164   TEST_AND_DUMP(ppfd->dwFlags, PFD_NEED_PALETTE);
 165   TEST_AND_DUMP(ppfd->dwFlags, PFD_NEED_SYSTEM_PALETTE);
 166   TEST_AND_DUMP(ppfd->dwFlags, PFD_STEREO);
 167   TEST_AND_DUMP(ppfd->dwFlags, PFD_STEREO_DONTCARE);
 168   TEST_AND_DUMP(ppfd->dwFlags, PFD_SUPPORT_GDI);
 169   TEST_AND_DUMP(ppfd->dwFlags, PFD_SUPPORT_OPENGL);
 170   TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_COPY);
 171   TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_EXCHANGE);
 172   TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_LAYER_BUFFERS);
 173   /* PFD_SUPPORT_COMPOSITION is new in Vista, it is similar to composition
 174    * under X e.g. COMPOSITE + GLX_EXT_TEXTURE_FROM_PIXMAP. */
 175   TEST_AND_DUMP(ppfd->dwFlags, PFD_SUPPORT_COMPOSITION);
 176 #undef TEST_AND_DUMP
 177   TRACE("\n");
 178
 179   TRACE("  - iPixelType : ");
 180   switch (ppfd->iPixelType) {
 181   case PFD_TYPE_RGBA: TRACE("PFD_TYPE_RGBA"); break;
 182   case PFD_TYPE_COLORINDEX: TRACE("PFD_TYPE_COLORINDEX"); break;
 183   }
 184   TRACE("\n");
 185
 186   TRACE("  - Color   : %d\n", ppfd->cColorBits);
 187   TRACE("  - Red     : %d\n", ppfd->cRedBits);
 188   TRACE("  - Green   : %d\n", ppfd->cGreenBits);
 189   TRACE("  - Blue    : %d\n", ppfd->cBlueBits);
 190   TRACE("  - Alpha   : %d\n", ppfd->cAlphaBits);
 191   TRACE("  - Accum   : %d\n", ppfd->cAccumBits);
 192   TRACE("  - Depth   : %d\n", ppfd->cDepthBits);
 193   TRACE("  - Stencil : %d\n", ppfd->cStencilBits);
 194   TRACE("  - Aux     : %d\n", ppfd->cAuxBuffers);
 195
 196   TRACE("  - iLayerType : ");
 197   switch (ppfd->iLayerType) {
 198   case PFD_MAIN_PLANE: TRACE("PFD_MAIN_PLANE"); break;
 199   case PFD_OVERLAY_PLANE: TRACE("PFD_OVERLAY_PLANE"); break;
 200   case (BYTE)PFD_UNDERLAY_PLANE: TRACE("PFD_UNDERLAY_PLANE"); break;
 201   }
 202   TRACE("\n");
 203 }
 204
 205 #define PUSH1(attribs,att)        do { attribs[nAttribs++] = (att); } while (0)
 206 #define PUSH2(attribs,att,value)  do { attribs[nAttribs++] = (att); attribs[nAttribs++] = (value); } while(0)
 207
 208 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
 209 /* GLX 1.0 */
 210 MAKE_FUNCPTR(glXChooseVisual)
 211 MAKE_FUNCPTR(glXCopyContext)
 212 MAKE_FUNCPTR(glXCreateContext)
 213 MAKE_FUNCPTR(glXCreateGLXPixmap)
 214 MAKE_FUNCPTR(glXGetCurrentContext)
 215 MAKE_FUNCPTR(glXGetCurrentDrawable)
 216 MAKE_FUNCPTR(glXDestroyContext)
 217 MAKE_FUNCPTR(glXDestroyGLXPixmap)
 218 MAKE_FUNCPTR(glXGetConfig)
 219 MAKE_FUNCPTR(glXIsDirect)
 220 MAKE_FUNCPTR(glXMakeCurrent)
 221 MAKE_FUNCPTR(glXSwapBuffers)
 222 MAKE_FUNCPTR(glXQueryExtension)
 223 MAKE_FUNCPTR(glXQueryVersion)
 224 MAKE_FUNCPTR(glXUseXFont)
 225
 226 /* GLX 1.1 */
 227 MAKE_FUNCPTR(glXGetClientString)
 228 MAKE_FUNCPTR(glXQueryExtensionsString)
 229 MAKE_FUNCPTR(glXQueryServerString)
 230
 231 /* GLX 1.3 */
 232 MAKE_FUNCPTR(glXGetFBConfigs)
 233 MAKE_FUNCPTR(glXChooseFBConfig)
 234 MAKE_FUNCPTR(glXCreatePbuffer)
 235 MAKE_FUNCPTR(glXCreateNewContext)
 236 MAKE_FUNCPTR(glXDestroyPbuffer)
 237 MAKE_FUNCPTR(glXGetFBConfigAttrib)
 238 MAKE_FUNCPTR(glXGetVisualFromFBConfig)
 239 MAKE_FUNCPTR(glXMakeContextCurrent)
 240 MAKE_FUNCPTR(glXQueryDrawable)
 241 MAKE_FUNCPTR(glXGetCurrentReadDrawable)
 242
 243 /* GLX Extensions */
 244 static void* (*pglXGetProcAddressARB)(const GLubyte *);
 245 static int   (*pglXSwapIntervalSGI)(int);
 246
 247 /* ATI GLX Extensions */
 248 static BOOL  (*pglXBindTexImageATI)(Display *dpy, GLXPbuffer pbuffer, int buffer);
 249 static BOOL  (*pglXReleaseTexImageATI)(Display *dpy, GLXPbuffer pbuffer, int buffer);
 250 static BOOL  (*pglXDrawableAttribATI)(Display *dpy, GLXDrawable draw, const int *attribList);
 251
 252 /* NV GLX Extension */
 253 static void* (*pglXAllocateMemoryNV)(GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority);
 254 static void  (*pglXFreeMemoryNV)(GLvoid *pointer);
 255
 256 /* MESA GLX Extensions */
 257 static void (*pglXCopySubBufferMESA)(Display *dpy, GLXDrawable drawable, int x, int y, int width, int height);
 258
 259 /* Standard OpenGL */
 260 MAKE_FUNCPTR(glBindTexture)
 261 MAKE_FUNCPTR(glBitmap)
 262 MAKE_FUNCPTR(glCopyTexSubImage1D)
 263 MAKE_FUNCPTR(glCopyTexImage2D)
 264 MAKE_FUNCPTR(glCopyTexSubImage2D)
 265 MAKE_FUNCPTR(glDrawBuffer)
 266 MAKE_FUNCPTR(glEndList)
 267 MAKE_FUNCPTR(glGetError)
 268 MAKE_FUNCPTR(glGetIntegerv)
 269 MAKE_FUNCPTR(glGetString)
 270 MAKE_FUNCPTR(glNewList)
 271 MAKE_FUNCPTR(glPixelStorei)
 272 MAKE_FUNCPTR(glReadPixels)
 273 MAKE_FUNCPTR(glTexImage2D)
 274 MAKE_FUNCPTR(glFinish)
 275 MAKE_FUNCPTR(glFlush)
 276 #undef MAKE_FUNCPTR
 277
 278 static BOOL infoInitialized = FALSE;
 279 static BOOL X11DRV_WineGL_InitOpenglInfo(void)
 280 {
 281
 282     int screen = DefaultScreen(gdi_display);
 283     Window win = RootWindow(gdi_display, screen);
 284     const char* str;
 285     Visual *visual;
 286     XVisualInfo template;
 287     XVisualInfo *vis;
 288     int num;
 289     GLXContext ctx = NULL;
 290
 291     if (infoInitialized)
 292         return TRUE;
 293     infoInitialized = TRUE;
 294
 295     wine_tsx11_lock();
 296
 297     visual = DefaultVisual(gdi_display, screen);
 298     template.visualid = XVisualIDFromVisual(visual);
 299     vis = XGetVisualInfo(gdi_display, VisualIDMask, &template, &num);
 300     if (vis) {
 301         WORD old_fs = wine_get_fs();
 302         /* Create a GLX Context. Without one we can't query GL information */
 303         ctx = pglXCreateContext(gdi_display, vis, None, GL_TRUE);
 304         if (wine_get_fs() != old_fs)
 305         {
 306             wine_set_fs( old_fs );
 307             wine_tsx11_unlock();
 308             ERR( "%%fs register corrupted, probably broken ATI driver, disabling OpenGL.\n" );
 309             ERR( "You need to set the \"UseFastTls\" option to \"2\" in your X config file.\n" );
 310             return FALSE;
 311         }
 312     }
 313
 314     if (ctx) {
 315         pglXMakeCurrent(gdi_display, win, ctx);
 316     } else {
 317         ERR(" couldn't initialize OpenGL, expect problems\n");
 318         wine_tsx11_unlock();
 319         return FALSE;
 320     }
 321
 322     WineGLInfo.glVersion = (const char *) pglGetString(GL_VERSION);
 323     str = (const char *) pglGetString(GL_EXTENSIONS);
 324     WineGLInfo.glExtensions = HeapAlloc(GetProcessHeap(), 0, strlen(str)+1);
 325     strcpy(WineGLInfo.glExtensions, str);
 326
 327     /* Get the common GLX version supported by GLX client and server ( major/minor) */
 328     pglXQueryVersion(gdi_display, &WineGLInfo.glxVersion[0], &WineGLInfo.glxVersion[1]);
 329
 330     WineGLInfo.glxServerVersion = pglXQueryServerString(gdi_display, screen, GLX_VERSION);
 331     WineGLInfo.glxServerVendor = pglXQueryServerString(gdi_display, screen, GLX_VENDOR);
 332     WineGLInfo.glxServerExtensions = pglXQueryServerString(gdi_display, screen, GLX_EXTENSIONS);
 333
 334     WineGLInfo.glxClientVersion = pglXGetClientString(gdi_display, GLX_VERSION);
 335     WineGLInfo.glxClientVendor = pglXGetClientString(gdi_display, GLX_VENDOR);
 336     WineGLInfo.glxClientExtensions = pglXGetClientString(gdi_display, GLX_EXTENSIONS);
 337
 338     WineGLInfo.glxExtensions = pglXQueryExtensionsString(gdi_display, screen);
 339     WineGLInfo.glxDirect = pglXIsDirect(gdi_display, ctx);
 340
 341     TRACE("GL version             : %s.\n", WineGLInfo.glVersion);
 342     TRACE("GL renderer            : %s.\n", pglGetString(GL_RENDERER));
 343     TRACE("GLX version            : %d.%d.\n", WineGLInfo.glxVersion[0], WineGLInfo.glxVersion[1]);
 344     TRACE("Server GLX version     : %s.\n", WineGLInfo.glxServerVersion);
 345     TRACE("Server GLX vendor:     : %s.\n", WineGLInfo.glxServerVendor);
 346     TRACE("Client GLX version     : %s.\n", WineGLInfo.glxClientVersion);
 347     TRACE("Client GLX vendor:     : %s.\n", WineGLInfo.glxClientVendor);
 348     TRACE("Direct rendering enabled: %s\n", WineGLInfo.glxDirect ? "True" : "False");
 349
 350     if(vis) XFree(vis);
 351     if(ctx) {
 352         pglXMakeCurrent(gdi_display, None, NULL);
 353         pglXDestroyContext(gdi_display, ctx);
 354     }
 355     wine_tsx11_unlock();
 356     return TRUE;
 357 }
 358
 359 void X11DRV_OpenGL_Cleanup(void)
 360 {
 361     HeapFree(GetProcessHeap(), 0, WineGLInfo.glExtensions);
 362     infoInitialized = FALSE;
 363 }
 364
 365 static BOOL has_opengl(void)
 366 {
 367     static int init_done;
 368     static void *opengl_handle;
 369
 370     char buffer[200];
 371     int error_base, event_base;
 372
 373     if (init_done) return (opengl_handle != NULL);
 374     init_done = 1;
 375
 376     /* No need to load any other libraries as according to the ABI, libGL should be self-sufficient
 377        and include all dependencies */
 378     opengl_handle = wine_dlopen(SONAME_LIBGL, RTLD_NOW|RTLD_GLOBAL, buffer, sizeof(buffer));
 379     if (opengl_handle == NULL)
 380     {
 381         ERR( "Failed to load libGL: %s\n", buffer );
 382         ERR( "OpenGL support is disabled.\n");
 383         return FALSE;
 384     }
 385
 386     pglXGetProcAddressARB = wine_dlsym(opengl_handle, "glXGetProcAddressARB", NULL, 0);
 387     if (pglXGetProcAddressARB == NULL) {
 388         ERR("Could not find glXGetProcAddressARB in libGL, disabling OpenGL.\n");
 389         goto failed;
 390     }
 391
 392 #define LOAD_FUNCPTR(f) do if((p##f = (void*)pglXGetProcAddressARB((const unsigned char*)#f)) == NULL) \
 393     { \
 394         ERR( "%s not found in libGL, disabling OpenGL.\n", #f ); \
 395         goto failed; \
 396     } while(0)
 397
 398     /* GLX 1.0 */
 399     LOAD_FUNCPTR(glXChooseVisual);
 400     LOAD_FUNCPTR(glXCopyContext);
 401     LOAD_FUNCPTR(glXCreateContext);
 402     LOAD_FUNCPTR(glXCreateGLXPixmap);
 403     LOAD_FUNCPTR(glXGetCurrentContext);
 404     LOAD_FUNCPTR(glXGetCurrentDrawable);
 405     LOAD_FUNCPTR(glXDestroyContext);
 406     LOAD_FUNCPTR(glXDestroyGLXPixmap);
 407     LOAD_FUNCPTR(glXGetConfig);
 408     LOAD_FUNCPTR(glXIsDirect);
 409     LOAD_FUNCPTR(glXMakeCurrent);
 410     LOAD_FUNCPTR(glXSwapBuffers);
 411     LOAD_FUNCPTR(glXQueryExtension);
 412     LOAD_FUNCPTR(glXQueryVersion);
 413     LOAD_FUNCPTR(glXUseXFont);
 414
 415     /* GLX 1.1 */
 416     LOAD_FUNCPTR(glXGetClientString);
 417     LOAD_FUNCPTR(glXQueryExtensionsString);
 418     LOAD_FUNCPTR(glXQueryServerString);
 419
 420     /* GLX 1.3 */
 421     LOAD_FUNCPTR(glXCreatePbuffer);
 422     LOAD_FUNCPTR(glXCreateNewContext);
 423     LOAD_FUNCPTR(glXDestroyPbuffer);
 424     LOAD_FUNCPTR(glXMakeContextCurrent);
 425     LOAD_FUNCPTR(glXGetCurrentReadDrawable);
 426     LOAD_FUNCPTR(glXGetFBConfigs);
 427
 428     /* Standard OpenGL calls */
 429     LOAD_FUNCPTR(glBindTexture);
 430     LOAD_FUNCPTR(glBitmap);
 431     LOAD_FUNCPTR(glCopyTexSubImage1D);
 432     LOAD_FUNCPTR(glCopyTexImage2D);
 433     LOAD_FUNCPTR(glCopyTexSubImage2D);
 434     LOAD_FUNCPTR(glDrawBuffer);
 435     LOAD_FUNCPTR(glEndList);
 436     LOAD_FUNCPTR(glGetError);
 437     LOAD_FUNCPTR(glGetIntegerv);
 438     LOAD_FUNCPTR(glGetString);
 439     LOAD_FUNCPTR(glNewList);
 440     LOAD_FUNCPTR(glPixelStorei);
 441     LOAD_FUNCPTR(glReadPixels);
 442     LOAD_FUNCPTR(glTexImage2D);
 443     LOAD_FUNCPTR(glFinish);
 444     LOAD_FUNCPTR(glFlush);
 445 #undef LOAD_FUNCPTR
 446
 447 /* It doesn't matter if these fail. They'll only be used if the driver reports
 448    the associated extension is available (and if a driver reports the extension
 449    is available but fails to provide the functions, it's quite broken) */
 450 #define LOAD_FUNCPTR(f) p##f = (void*)pglXGetProcAddressARB((const unsigned char*)#f)
 451     /* NV GLX Extension */
 452     LOAD_FUNCPTR(glXAllocateMemoryNV);
 453     LOAD_FUNCPTR(glXFreeMemoryNV);
 454 #undef LOAD_FUNCPTR
 455
 456     if(!X11DRV_WineGL_InitOpenglInfo()) goto failed;
 457
 458     wine_tsx11_lock();
 459     if (pglXQueryExtension(gdi_display, &error_base, &event_base)) {
 460         TRACE("GLX is up and running error_base = %d\n", error_base);
 461     } else {
 462         wine_tsx11_unlock();
 463         ERR( "GLX extension is missing, disabling OpenGL.\n" );
 464         goto failed;
 465     }
 466
 467     /* In case of GLX you have direct and indirect rendering. Most of the time direct rendering is used
 468      * as in general only that is hardware accelerated. In some cases like in case of remote X indirect
 469      * rendering is used.
 470      *
 471      * The main problem for our OpenGL code is that we need certain GLX calls but their presence
 472      * depends on the reported GLX client / server version and on the client / server extension list.
 473      * Those don't have to be the same.
 474      *
 475      * In general the server GLX information lists the capabilities in case of indirect rendering.
 476      * When direct rendering is used, the OpenGL client library is responsible for which GLX calls are
 477      * available and in that case the client GLX informat can be used.
 478      * OpenGL programs should use the 'intersection' of both sets of information which is advertised
 479      * in the GLX version/extension list. When a program does this it works for certain for both
 480      * direct and indirect rendering.
 481      *
 482      * The problem we are having in this area is that ATI's Linux drivers are broken. For some reason
 483      * they haven't added some very important GLX extensions like GLX_SGIX_fbconfig to their client
 484      * extension list which causes this extension not to be listed. (Wine requires this extension).
 485      * ATI advertises a GLX client version of 1.3 which implies that this fbconfig extension among
 486      * pbuffers is around.
 487      *
 488      * In order to provide users of Ati's proprietary drivers with OpenGL support, we need to detect
 489      * the ATI drivers and from then on use GLX client information for them.
 490      */
 491
 492     if(glxRequireVersion(3)) {
 493         pglXChooseFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfig");
 494         pglXGetFBConfigAttrib = pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttrib");
 495         pglXGetVisualFromFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfig");
 496         pglXQueryDrawable = pglXGetProcAddressARB((const GLubyte *) "glXQueryDrawable");
 497     } else if(glxRequireExtension("GLX_SGIX_fbconfig")) {
 498         pglXChooseFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfigSGIX");
 499         pglXGetFBConfigAttrib = pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttribSGIX");
 500         pglXGetVisualFromFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfigSGIX");
 501
 502         /* The mesa libGL client library seems to forward glXQueryDrawable to the Xserver, so only
 503          * enable this function when the Xserver understand GLX 1.3 or newer
 504          */
 505         pglXQueryDrawable = NULL;
 506      } else if(strcmp("ATI", WineGLInfo.glxClientVendor) == 0) {
 507         TRACE("Overriding ATI GLX capabilities!\n");
 508         pglXChooseFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfig");
 509         pglXGetFBConfigAttrib = pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttrib");
 510         pglXGetVisualFromFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfig");
 511         pglXQueryDrawable = pglXGetProcAddressARB((const GLubyte *) "glXQueryDrawable");
 512
 513         /* Use client GLX information in case of the ATI drivers. We override the
 514          * capabilities over here and not somewhere else as ATI might better their
 515          * life in the future. In case they release proper drivers this block of
 516          * code won't be called. */
 517         WineGLInfo.glxExtensions = WineGLInfo.glxClientExtensions;
 518     } else {
 519          ERR(" glx_version is %s and GLX_SGIX_fbconfig extension is unsupported. Expect problems.\n", WineGLInfo.glxServerVersion);
 520     }
 521
 522     if(glxRequireExtension("GLX_ATI_render_texture")) {
 523         use_render_texture_ati = 1;
 524         pglXBindTexImageATI = pglXGetProcAddressARB((const GLubyte *) "glXBindTexImageATI");
 525         pglXReleaseTexImageATI = pglXGetProcAddressARB((const GLubyte *) "glXReleaseTexImageATI");
 526         pglXDrawableAttribATI = pglXGetProcAddressARB((const GLubyte *) "glXDrawableAttribATI");
 527     }
 528
 529     if(glxRequireExtension("GLX_MESA_copy_sub_buffer")) {
 530         pglXCopySubBufferMESA = pglXGetProcAddressARB((const GLubyte *) "glXCopySubBufferMESA");
 531     }
 532
 533     X11DRV_WineGL_LoadExtensions();
 534
 535     wine_tsx11_unlock();
 536     return TRUE;
 537
 538 failed:
 539     wine_dlclose(opengl_handle, NULL, 0);
 540     opengl_handle = NULL;
 541     return FALSE;
 542 }
 543
 544 static inline Wine_GLContext *alloc_context(void)
 545 {
 546     Wine_GLContext *ret;
 547
 548     if ((ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(Wine_GLContext))))
 549     {
 550         ret->next = context_list;
 551         if (context_list) context_list->prev = ret;
 552         context_list = ret;
 553     }
 554     return ret;
 555 }
 556
 557 static inline void free_context(Wine_GLContext *context)
 558 {
 559     if (context->next != NULL) context->next->prev = context->prev;
 560     if (context->prev != NULL) context->prev->next = context->next;
 561     else context_list = context->next;
 562
 563     if (context->vis) XFree(context->vis);
 564     HeapFree(GetProcessHeap(), 0, context);
 565 }
 566
 567 static inline BOOL is_valid_context( Wine_GLContext *ctx )
 568 {
 569     Wine_GLContext *ptr;
 570     for (ptr = context_list; ptr; ptr = ptr->next) if (ptr == ctx) break;
 571     return (ptr != NULL);
 572 }
 573
 574 static int describeContext(Wine_GLContext* ctx) {
 575     int tmp;
 576     int ctx_vis_id;
 577     TRACE(" Context %p have (vis:%p):\n", ctx, ctx->vis);
 578     pglXGetFBConfigAttrib(gdi_display, ctx->fmt->fbconfig, GLX_FBCONFIG_ID, &tmp);
 579     TRACE(" - FBCONFIG_ID 0x%x\n", tmp);
 580     pglXGetFBConfigAttrib(gdi_display, ctx->fmt->fbconfig, GLX_VISUAL_ID, &tmp);
 581     TRACE(" - VISUAL_ID 0x%x\n", tmp);
 582     ctx_vis_id = tmp;
 583     return ctx_vis_id;
 584 }
 585
 586 static BOOL describeDrawable(X11DRV_PDEVICE *physDev) {
 587     int tmp;
 588     WineGLPixelFormat *fmt;
 589     int fmt_count = 0;
 590
 591     fmt = ConvertPixelFormatWGLtoGLX(gdi_display, physDev->current_pf, TRUE /* Offscreen */, &fmt_count);
 592     if(!fmt) return FALSE;
 593
 594     TRACE(" HDC %p has:\n", physDev->hdc);
 595     TRACE(" - iPixelFormat %d\n", fmt->iPixelFormat);
 596     TRACE(" - Drawable %p\n", (void*) get_glxdrawable(physDev));
 597     TRACE(" - FBCONFIG_ID 0x%x\n", fmt->fmt_id);
 598
 599     pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_VISUAL_ID, &tmp);
 600     TRACE(" - VISUAL_ID 0x%x\n", tmp);
 601
 602     return TRUE;
 603 }
 604
 605 static int ConvertAttribWGLtoGLX(const int* iWGLAttr, int* oGLXAttr, Wine_GLPBuffer* pbuf) {
 606   int nAttribs = 0;
 607   unsigned cur = 0;
 608   int pop;
 609   int drawattrib = 0;
 610   int nvfloatattrib = GLX_DONT_CARE;
 611   int pixelattrib = 0;
 612
 613   /* The list of WGL attributes is allowed to be NULL. We don't return here for NULL
 614    * because we need to do fixups for GLX_DRAWABLE_TYPE/GLX_RENDER_TYPE/GLX_FLOAT_COMPONENTS_NV. */
 615   while (iWGLAttr && 0 != iWGLAttr[cur]) {
 616     TRACE("pAttr[%d] = %x\n", cur, iWGLAttr[cur]);
 617
 618     switch (iWGLAttr[cur]) {
 619     case WGL_AUX_BUFFERS_ARB:
 620       pop = iWGLAttr[++cur];
 621       PUSH2(oGLXAttr, GLX_AUX_BUFFERS, pop);
 622       TRACE("pAttr[%d] = GLX_AUX_BUFFERS: %d\n", cur, pop);
 623       break;
 624     case WGL_COLOR_BITS_ARB:
 625       pop = iWGLAttr[++cur];
 626       PUSH2(oGLXAttr, GLX_BUFFER_SIZE, pop);
 627       TRACE("pAttr[%d] = GLX_BUFFER_SIZE: %d\n", cur, pop);
 628       break;
 629     case WGL_BLUE_BITS_ARB:
 630       pop = iWGLAttr[++cur];
 631       PUSH2(oGLXAttr, GLX_BLUE_SIZE, pop);
 632       TRACE("pAttr[%d] = GLX_BLUE_SIZE: %d\n", cur, pop);
 633       break;
 634     case WGL_RED_BITS_ARB:
 635       pop = iWGLAttr[++cur];
 636       PUSH2(oGLXAttr, GLX_RED_SIZE, pop);
 637       TRACE("pAttr[%d] = GLX_RED_SIZE: %d\n", cur, pop);
 638       break;
 639     case WGL_GREEN_BITS_ARB:
 640       pop = iWGLAttr[++cur];
 641       PUSH2(oGLXAttr, GLX_GREEN_SIZE, pop);
 642       TRACE("pAttr[%d] = GLX_GREEN_SIZE: %d\n", cur, pop);
 643       break;
 644     case WGL_ALPHA_BITS_ARB:
 645       pop = iWGLAttr[++cur];
 646       PUSH2(oGLXAttr, GLX_ALPHA_SIZE, pop);
 647       TRACE("pAttr[%d] = GLX_ALPHA_SIZE: %d\n", cur, pop);
 648       break;
 649     case WGL_DEPTH_BITS_ARB:
 650       pop = iWGLAttr[++cur];
 651       PUSH2(oGLXAttr, GLX_DEPTH_SIZE, pop);
 652       TRACE("pAttr[%d] = GLX_DEPTH_SIZE: %d\n", cur, pop);
 653       break;
 654     case WGL_STENCIL_BITS_ARB:
 655       pop = iWGLAttr[++cur];
 656       PUSH2(oGLXAttr, GLX_STENCIL_SIZE, pop);
 657       TRACE("pAttr[%d] = GLX_STENCIL_SIZE: %d\n", cur, pop);
 658       break;
 659     case WGL_DOUBLE_BUFFER_ARB:
 660       pop = iWGLAttr[++cur];
 661       PUSH2(oGLXAttr, GLX_DOUBLEBUFFER, pop);
 662       TRACE("pAttr[%d] = GLX_DOUBLEBUFFER: %d\n", cur, pop);
 663       break;
 664     case WGL_STEREO_ARB:
 665       pop = iWGLAttr[++cur];
 666       PUSH2(oGLXAttr, GLX_STEREO, pop);
 667       TRACE("pAttr[%d] = GLX_STEREO: %d\n", cur, pop);
 668       break;
 669
 670     case WGL_PIXEL_TYPE_ARB:
 671       pop = iWGLAttr[++cur];
 672       TRACE("pAttr[%d] = WGL_PIXEL_TYPE_ARB: %d\n", cur, pop);
 673       switch (pop) {
 674       case WGL_TYPE_COLORINDEX_ARB: pixelattrib = GLX_COLOR_INDEX_BIT; break ;
 675       case WGL_TYPE_RGBA_ARB: pixelattrib = GLX_RGBA_BIT; break ;
 676       /* This is the same as WGL_TYPE_RGBA_FLOAT_ATI but the GLX constants differ, only the ARB GLX one is widely supported so use that */
 677       case WGL_TYPE_RGBA_FLOAT_ATI: pixelattrib = GLX_RGBA_FLOAT_BIT; break ;
 678       case WGL_TYPE_RGBA_UNSIGNED_FLOAT_EXT: pixelattrib = GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT; break ;
 679       default:
 680         ERR("unexpected PixelType(%x)\n", pop);
 681         pop = 0;
 682       }
 683       break;
 684
 685     case WGL_SUPPORT_GDI_ARB:
 686       /* This flag is set in a WineGLPixelFormat */
 687       pop = iWGLAttr[++cur];
 688       TRACE("pAttr[%d] = WGL_SUPPORT_GDI_ARB: %d\n", cur, pop);
 689       break;
 690
 691     case WGL_DRAW_TO_BITMAP_ARB:
 692       /* This flag is set in a WineGLPixelFormat */
 693       pop = iWGLAttr[++cur];
 694       TRACE("pAttr[%d] = WGL_DRAW_TO_BITMAP_ARB: %d\n", cur, pop);
 695       break;
 696
 697     case WGL_DRAW_TO_WINDOW_ARB:
 698       pop = iWGLAttr[++cur];
 699       TRACE("pAttr[%d] = WGL_DRAW_TO_WINDOW_ARB: %d\n", cur, pop);
 700       /* GLX_DRAWABLE_TYPE flags need to be OR'd together. See below. */
 701       if (pop) {
 702         drawattrib |= GLX_WINDOW_BIT;
 703       }
 704       break;
 705
 706     case WGL_DRAW_TO_PBUFFER_ARB:
 707       pop = iWGLAttr[++cur];
 708       TRACE("pAttr[%d] = WGL_DRAW_TO_PBUFFER_ARB: %d\n", cur, pop);
 709       /* GLX_DRAWABLE_TYPE flags need to be OR'd together. See below. */
 710       if (pop) {
 711         drawattrib |= GLX_PBUFFER_BIT;
 712       }
 713       break;
 714
 715     case WGL_ACCELERATION_ARB:
 716       /* This flag is set in a WineGLPixelFormat */
 717       pop = iWGLAttr[++cur];
 718       TRACE("pAttr[%d] = WGL_ACCELERATION_ARB: %d\n", cur, pop);
 719       break;
 720
 721     case WGL_SUPPORT_OPENGL_ARB:
 722       pop = iWGLAttr[++cur];
 723       /** nothing to do, if we are here, supposing support Accelerated OpenGL */
 724       TRACE("pAttr[%d] = WGL_SUPPORT_OPENGL_ARB: %d\n", cur, pop);
 725       break;
 726
 727     case WGL_SWAP_METHOD_ARB:
 728       pop = iWGLAttr[++cur];
 729       /* For now we ignore this and just return SWAP_EXCHANGE */
 730       TRACE("pAttr[%d] = WGL_SWAP_METHOD_ARB: %#x\n", cur, pop);
 731       break;
 732
 733     case WGL_PBUFFER_LARGEST_ARB:
 734       pop = iWGLAttr[++cur];
 735       PUSH2(oGLXAttr, GLX_LARGEST_PBUFFER, pop);
 736       TRACE("pAttr[%d] = GLX_LARGEST_PBUFFER: %x\n", cur, pop);
 737       break;
 738
 739     case WGL_SAMPLE_BUFFERS_ARB:
 740       pop = iWGLAttr[++cur];
 741       PUSH2(oGLXAttr, GLX_SAMPLE_BUFFERS_ARB, pop);
 742       TRACE("pAttr[%d] = GLX_SAMPLE_BUFFERS_ARB: %x\n", cur, pop);
 743       break;
 744
 745     case WGL_SAMPLES_ARB:
 746       pop = iWGLAttr[++cur];
 747       PUSH2(oGLXAttr, GLX_SAMPLES_ARB, pop);
 748       TRACE("pAttr[%d] = GLX_SAMPLES_ARB: %x\n", cur, pop);
 749       break;
 750
 751     case WGL_TEXTURE_FORMAT_ARB:
 752     case WGL_TEXTURE_TARGET_ARB:
 753     case WGL_MIPMAP_TEXTURE_ARB:
 754       TRACE("WGL_render_texture Attributes: %x as %x\n", iWGLAttr[cur], iWGLAttr[cur + 1]);
 755       pop = iWGLAttr[++cur];
 756       if (NULL == pbuf) {
 757         ERR("trying to use GLX_Pbuffer Attributes without Pbuffer (was %x)\n", iWGLAttr[cur]);
 758       }
 759       if (use_render_texture_ati) {
 760         /** nothing to do here */
 761       }
 762       else if (!use_render_texture_emulation) {
 763         if (WGL_NO_TEXTURE_ARB != pop) {
 764           ERR("trying to use WGL_render_texture Attributes without support (was %x)\n", iWGLAttr[cur]);
 765           return -1; /** error: don't support it */
 766         } else {
 767           PUSH2(oGLXAttr, GLX_X_RENDERABLE, pop);
 768           drawattrib |= GLX_PBUFFER_BIT;
 769         }
 770       }
 771       break ;
 772     case WGL_FLOAT_COMPONENTS_NV:
 773       nvfloatattrib = iWGLAttr[++cur];
 774       TRACE("pAttr[%d] = WGL_FLOAT_COMPONENTS_NV: %x\n", cur, nvfloatattrib);
 775       break ;
 776     case WGL_BIND_TO_TEXTURE_DEPTH_NV:
 777     case WGL_BIND_TO_TEXTURE_RGB_ARB:
 778     case WGL_BIND_TO_TEXTURE_RGBA_ARB:
 779     case WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_R_NV:
 780     case WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RG_NV:
 781     case WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV:
 782     case WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGBA_NV:
 783       pop = iWGLAttr[++cur];
 784       /** cannot be converted, see direct handling on
 785        *   - wglGetPixelFormatAttribivARB
 786        *  TODO: wglChoosePixelFormat
 787        */
 788       break ;
 789     case WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT:
 790       pop = iWGLAttr[++cur];
 791       PUSH2(oGLXAttr, GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT, pop);
 792       TRACE("pAttr[%d] = GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT: %x\n", cur, pop);
 793       break ;
 794
 795     case WGL_TYPE_RGBA_UNSIGNED_FLOAT_EXT:
 796       pop = iWGLAttr[++cur];
 797       PUSH2(oGLXAttr, GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT, pop);
 798       TRACE("pAttr[%d] = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT: %x\n", cur, pop);
 799       break ;
 800     default:
 801       FIXME("unsupported %x WGL Attribute\n", iWGLAttr[cur]);
 802       break;
 803     }
 804     ++cur;
 805   }
 806
 807   /* Apply the OR'd drawable type bitmask now EVEN when WGL_DRAW_TO* is unset.
 808    * It is needed in all cases because GLX_DRAWABLE_TYPE default to GLX_WINDOW_BIT. */
 809   PUSH2(oGLXAttr, GLX_DRAWABLE_TYPE, drawattrib);
 810   TRACE("pAttr[?] = GLX_DRAWABLE_TYPE: %#x\n", drawattrib);
 811
 812   /* Set GLX_RENDER_TYPE all the time */
 813   PUSH2(oGLXAttr, GLX_RENDER_TYPE, pixelattrib);
 814   TRACE("pAttr[?] = GLX_RENDER_TYPE: %#x\n", pixelattrib);
 815
 816   /* Set GLX_FLOAT_COMPONENTS_NV all the time */
 817   if(strstr(WineGLInfo.glxExtensions, "GLX_NV_float_buffer")) {
 818     PUSH2(oGLXAttr, GLX_FLOAT_COMPONENTS_NV, nvfloatattrib);
 819     TRACE("pAttr[?] = GLX_FLOAT_COMPONENTS_NV: %#x\n", nvfloatattrib);
 820   }
 821
 822   return nAttribs;
 823 }
 824
 825 static int get_render_type_from_fbconfig(Display *display, GLXFBConfig fbconfig)
 826 {
 827     int render_type=0, render_type_bit;
 828     pglXGetFBConfigAttrib(display, fbconfig, GLX_RENDER_TYPE, &render_type_bit);
 829     switch(render_type_bit)
 830     {
 831         case GLX_RGBA_BIT:
 832             render_type = GLX_RGBA_TYPE;
 833             break;
 834         case GLX_COLOR_INDEX_BIT:
 835             render_type = GLX_COLOR_INDEX_TYPE;
 836             break;
 837         case GLX_RGBA_FLOAT_BIT:
 838             render_type = GLX_RGBA_FLOAT_TYPE;
 839             break;
 840         case GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT:
 841             render_type = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
 842             break;
 843         default:
 844             ERR("Unknown render_type: %x\n", render_type);
 845     }
 846     return render_type;
 847 }
 848
 849 /* Check whether a fbconfig is suitable for Windows-style bitmap rendering */
 850 static BOOL check_fbconfig_bitmap_capability(Display *display, GLXFBConfig fbconfig)
 851 {
 852     int dbuf, value;
 853     pglXGetFBConfigAttrib(display, fbconfig, GLX_DOUBLEBUFFER, &dbuf);
 854     pglXGetFBConfigAttrib(gdi_display, fbconfig, GLX_DRAWABLE_TYPE, &value);
 855
 856     /* Windows only supports bitmap rendering on single buffered formats, further the fbconfig needs to have
 857      * the GLX_PIXMAP_BIT set. */
 858     return !dbuf && (value & GLX_PIXMAP_BIT);
 859 }
 860
 861 static WineGLPixelFormat *get_formats(Display *display, int *size_ret, int *onscreen_size_ret)
 862 {
 863     static WineGLPixelFormat *list;
 864     static int size, onscreen_size;
 865
 866     int fmt_id, nCfgs, i, run, bmp_formats;
 867     GLXFBConfig* cfgs;
 868     XVisualInfo *visinfo;
 869
 870     wine_tsx11_lock();
 871     if (list) goto done;
 872
 873     cfgs = pglXGetFBConfigs(display, DefaultScreen(display), &nCfgs);
 874     if (NULL == cfgs || 0 == nCfgs) {
 875         if(cfgs != NULL) XFree(cfgs);
 876         wine_tsx11_unlock();
 877         ERR("glXChooseFBConfig returns NULL\n");
 878         return NULL;
 879     }
 880
 881     /* Bitmap rendering on Windows implies the use of the Microsoft GDI software renderer.
 882      * Further most GLX drivers only offer pixmap rendering using indirect rendering (except for modern drivers which support 'AIGLX' / composite).
 883      * Indirect rendering can indicate software rendering (on Nvidia it is hw accelerated)
 884      * Since bitmap rendering implies the use of software rendering we can safely use indirect rendering for bitmaps.
 885      *
 886      * Below we count the number of formats which are suitable for bitmap rendering. Windows restricts bitmap rendering to single buffered formats.
 887      */
 888     for(i=0, bmp_formats=0; i<nCfgs; i++)
 889     {
 890         if(check_fbconfig_bitmap_capability(display, cfgs[i]))
 891             bmp_formats++;
 892     }
 893     TRACE("Found %d bitmap capable fbconfigs\n", bmp_formats);
 894
 895     list = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (nCfgs + bmp_formats)*sizeof(WineGLPixelFormat));
 896
 897     /* Fill the pixel format list. Put onscreen formats at the top and offscreen ones at the bottom.
 898      * Do this as GLX doesn't guarantee that the list is sorted */
 899     for(run=0; run < 2; run++)
 900     {
 901         for(i=0; i<nCfgs; i++) {
 902             pglXGetFBConfigAttrib(display, cfgs[i], GLX_FBCONFIG_ID, &fmt_id);
 903             visinfo = pglXGetVisualFromFBConfig(display, cfgs[i]);
 904
 905             /* The first run we only add onscreen formats (ones which have an associated X Visual).
 906              * The second run we only set offscreen formats. */
 907             if(!run && visinfo)
 908             {
 909                 /* We implement child window rendering using offscreen buffers (using composite or an XPixmap).
 910                  * The contents is copied to the destination using XCopyArea. For the copying to work
 911                  * the depth of the source and destination window should be the same. In general this should
 912                  * not be a problem for OpenGL as drivers only advertise formats with a similar depth (or no depth).
 913                  * As of the introduction of composition managers at least Nvidia now also offers ARGB visuals
 914                  * with a depth of 32 in addition to the default 24 bit. In order to prevent BadMatch errors we only
 915                  * list formats with the same depth. */
 916                 if(visinfo->depth != screen_depth)
 917                     continue;
 918
 919                 TRACE("Found onscreen format FBCONFIG_ID 0x%x corresponding to iPixelFormat %d at GLX index %d\n", fmt_id, size+1, i);
 920                 list[size].iPixelFormat = size+1; /* The index starts at 1 */
 921                 list[size].fbconfig = cfgs[i];
 922                 list[size].fmt_id = fmt_id;
 923                 list[size].render_type = get_render_type_from_fbconfig(display, cfgs[i]);
 924                 list[size].offscreenOnly = FALSE;
 925                 list[size].dwFlags = 0;
 926                 size++;
 927                 onscreen_size++;
 928
 929                 /* Clone a format if it is bitmap capable for indirect rendering to bitmaps */
 930                 if(check_fbconfig_bitmap_capability(display, cfgs[i]))
 931                 {
 932                     TRACE("Found bitmap capable format FBCONFIG_ID 0x%x corresponding to iPixelFormat %d at GLX index %d\n", fmt_id, size+1, i);
 933                     list[size].iPixelFormat = size+1; /* The index starts at 1 */
 934                     list[size].fbconfig = cfgs[i];
 935                     list[size].fmt_id = fmt_id;
 936                     list[size].render_type = get_render_type_from_fbconfig(display, cfgs[i]);
 937                     list[size].offscreenOnly = FALSE;
 938                     list[size].dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_GDI | PFD_GENERIC_FORMAT;
 939                     size++;
 940                     onscreen_size++;
 941                 }
 942
 943                 XFree(visinfo);
 944             } else if(run && !visinfo) {
 945                 TRACE("Found offscreen format FBCONFIG_ID 0x%x corresponding to iPixelFormat %d at GLX index %d\n", fmt_id, size+1, i);
 946                 list[size].iPixelFormat = size+1; /* The index starts at 1 */
 947                 list[size].fbconfig = cfgs[i];
 948                 list[size].fmt_id = fmt_id;
 949                 list[size].render_type = get_render_type_from_fbconfig(display, cfgs[i]);
 950                 list[size].offscreenOnly = TRUE;
 951                 list[size].dwFlags = 0;
 952                 size++;
 953             }
 954         }
 955     }
 956
 957     if(cfgs != NULL) XFree(cfgs);
 958
 959 done:
 960     if (size_ret) *size_ret = size;
 961     if (onscreen_size_ret) *onscreen_size_ret = onscreen_size;
 962     wine_tsx11_unlock();
 963     return list;
 964 }
 965
 966 /* GLX can advertise dozens of different pixelformats including offscreen and onscreen ones.
 967  * In our WGL implementation we only support a subset of these formats namely the format of
 968  * Wine's main visual and offscreen formats (if they are available).
 969  * This function converts a WGL format to its corresponding GLX one. It returns a WineGLPixelFormat
 970  * and it returns the number of supported WGL formats in fmt_count.
 971  */
 972 static WineGLPixelFormat* ConvertPixelFormatWGLtoGLX(Display *display, int iPixelFormat, BOOL AllowOffscreen, int *fmt_count)
 973 {
 974     WineGLPixelFormat *list, *res = NULL;
 975     int size, onscreen_size;
 976
 977     if (!(list = get_formats(display, &size, &onscreen_size ))) return NULL;
 978
 979     /* Check if the pixelformat is valid. Note that it is legal to pass an invalid
 980      * iPixelFormat in case of probing the number of pixelformats.
 981      */
 982     if((iPixelFormat > 0) && (iPixelFormat <= size) &&
 983        (!list[iPixelFormat-1].offscreenOnly || AllowOffscreen)) {
 984         res = &list[iPixelFormat-1];
 985         TRACE("Returning FBConfig=%p for iPixelFormat=%d\n", res->fbconfig, iPixelFormat);
 986     }
 987
 988     if(AllowOffscreen)
 989         *fmt_count = size;
 990     else
 991         *fmt_count = onscreen_size;
 992
 993     TRACE("Number of returned pixelformats=%d\n", *fmt_count);
 994
 995     return res;
 996 }
 997
 998 /* Search our internal pixelformat list for the WGL format corresponding to the given fbconfig */
 999 static WineGLPixelFormat* ConvertPixelFormatGLXtoWGL(Display *display, int fmt_id, DWORD dwFlags)
1000 {
1001     WineGLPixelFormat *list;
1002     int i, size;
1003
1004     if (!(list = get_formats(display, &size, NULL ))) return NULL;
1005
1006     for(i=0; i<size; i++) {
1007         /* A GLX format can appear multiple times in the pixel format list due to fake formats for bitmap rendering.
1008          * Fake formats might get selected when the user passes the proper flags using the dwFlags parameter. */
1009         if( (list[i].fmt_id == fmt_id) && ((list[i].dwFlags & dwFlags) == dwFlags) ) {
1010             TRACE("Returning iPixelFormat %d for fmt_id 0x%x\n", list[i].iPixelFormat, fmt_id);
1011             return &list[i];
1012         }
1013     }
1014     TRACE("No compatible format found for fmt_id 0x%x\n", fmt_id);
1015     return NULL;
1016 }
1017
1018 int pixelformat_from_fbconfig_id(XID fbconfig_id)
1019 {
1020     WineGLPixelFormat *fmt;
1021
1022     if (!fbconfig_id) return 0;
1023
1024     fmt = ConvertPixelFormatGLXtoWGL(gdi_display, fbconfig_id, 0 /* no flags */);
1025     if(fmt)
1026         return fmt->iPixelFormat;
1027     /* This will happen on hwnds without a pixel format set; it's ok */
1028     return 0;
1029 }
1030
1031
1032 /* Mark any allocated context using the glx drawable 'old' to use 'new' */
1033 void mark_drawable_dirty(Drawable old, Drawable new)
1034 {
1035     Wine_GLContext *ctx;
1036     for (ctx = context_list; ctx; ctx = ctx->next) {
1037         if (old == ctx->drawables[0]) {
1038             ctx->drawables[0] = new;
1039             ctx->refresh_drawables = TRUE;
1040         }
1041         if (old == ctx->drawables[1]) {
1042             ctx->drawables[1] = new;
1043             ctx->refresh_drawables = TRUE;
1044         }
1045     }
1046 }
1047
1048 /* Given the current context, make sure its drawable is sync'd */
1049 static inline void sync_context(Wine_GLContext *context)
1050 {
1051     if(context && context->refresh_drawables) {
1052         if (glxRequireVersion(3))
1053             pglXMakeContextCurrent(gdi_display, context->drawables[0],
1054                                    context->drawables[1], context->ctx);
1055         else
1056             pglXMakeCurrent(gdi_display, context->drawables[0], context->ctx);
1057         context->refresh_drawables = FALSE;
1058     }
1059 }
1060
1061
1062 static GLXContext create_glxcontext(Display *display, Wine_GLContext *context, GLXContext shareList)
1063 {
1064     GLXContext ctx;
1065
1066     /* We use indirect rendering for rendering to bitmaps. See get_formats for a comment about this. */
1067     BOOL indirect = (context->fmt->dwFlags & PFD_DRAW_TO_BITMAP) ? FALSE : TRUE;
1068
1069     if(context->vis)
1070         ctx = pglXCreateContext(gdi_display, context->vis, shareList, indirect);
1071     else /* Create a GLX Context for a pbuffer */
1072         ctx = pglXCreateNewContext(gdi_display, context->fmt->fbconfig, context->fmt->render_type, shareList, TRUE);
1073
1074     return ctx;
1075 }
1076
1077
1078 Drawable create_glxpixmap(Display *display, XVisualInfo *vis, Pixmap parent)
1079 {
1080     return pglXCreateGLXPixmap(display, vis, parent);
1081 }
1082
1083
1084 static XID create_bitmap_glxpixmap(X11DRV_PDEVICE *physDev, WineGLPixelFormat *fmt)
1085 {
1086     GLXPixmap ret = 0;
1087     XVisualInfo *vis;
1088
1089     wine_tsx11_lock();
1090
1091     vis = pglXGetVisualFromFBConfig(gdi_display, fmt->fbconfig);
1092     if(vis) {
1093         if(vis->depth == physDev->bitmap->pixmap_depth)
1094             ret = pglXCreateGLXPixmap(gdi_display, vis, physDev->bitmap->pixmap);
1095         XFree(vis);
1096     }
1097     wine_tsx11_unlock();
1098     TRACE("return %lx\n", ret);
1099     return ret;
1100 }
1101
1102 /**
1103  * X11DRV_ChoosePixelFormat
1104  *
1105  * Equivalent to glXChooseVisual.
1106  */
1107 int CDECL X11DRV_ChoosePixelFormat(X11DRV_PDEVICE *physDev,
1108                              const PIXELFORMATDESCRIPTOR *ppfd) {
1109     WineGLPixelFormat *list;
1110     int onscreen_size;
1111     int ret = 0;
1112     int value = 0;
1113     int i = 0;
1114     int bestFormat = -1;
1115     int bestDBuffer = -1;
1116     int bestStereo = -1;
1117     int bestColor = -1;
1118     int bestAlpha = -1;
1119     int bestDepth = -1;
1120     int bestStencil = -1;
1121     int bestAux = -1;
1122
1123     if (!has_opengl()) return 0;
1124
1125     if (TRACE_ON(wgl)) {
1126         TRACE("(%p,%p)\n", physDev, ppfd);
1127
1128         dump_PIXELFORMATDESCRIPTOR(ppfd);
1129     }
1130
1131     if (!(list = get_formats(gdi_display, NULL, &onscreen_size ))) return 0;
1132
1133     wine_tsx11_lock();
1134     for(i=0; i<onscreen_size; i++)
1135     {
1136         int dwFlags = 0;
1137         int iPixelType = 0;
1138         int alpha=0, color=0, depth=0, stencil=0, aux=0;
1139         WineGLPixelFormat *fmt = &list[i];
1140
1141         /* Pixel type */
1142         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_RENDER_TYPE, &value);
1143         if (value & GLX_RGBA_BIT)
1144             iPixelType = PFD_TYPE_RGBA;
1145         else
1146             iPixelType = PFD_TYPE_COLORINDEX;
1147
1148         if (ppfd->iPixelType != iPixelType)
1149         {
1150             TRACE("pixel type mismatch for iPixelFormat=%d\n", i+1);
1151             continue;
1152         }
1153
1154         /* Only use bitmap capable for formats for bitmap rendering.
1155          * See get_formats for more info. */
1156         if( (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) != (fmt->dwFlags & PFD_DRAW_TO_BITMAP))
1157         {
1158             TRACE("PFD_DRAW_TO_BITMAP mismatch for iPixelFormat=%d\n", i+1);
1159             continue;
1160         }
1161
1162         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DOUBLEBUFFER, &value);
1163         if (value) dwFlags |= PFD_DOUBLEBUFFER;
1164         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_STEREO, &value);
1165         if (value) dwFlags |= PFD_STEREO;
1166         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_BUFFER_SIZE, &color); /* cColorBits */
1167         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ALPHA_SIZE, &alpha); /* cAlphaBits */
1168         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DEPTH_SIZE, &depth); /* cDepthBits */
1169         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_STENCIL_SIZE, &stencil); /* cStencilBits */
1170         pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_AUX_BUFFERS, &aux); /* cAuxBuffers */
1171
1172         /* The behavior of PDF_STEREO/PFD_STEREO_DONTCARE and PFD_DOUBLEBUFFER / PFD_DOUBLEBUFFER_DONTCARE
1173          * is not very clear on MSDN. They specify that ChoosePixelFormat tries to match pixel formats
1174          * with the flag (PFD_STEREO / PFD_DOUBLEBUFFERING) set. Otherwise it says that it tries to match
1175          * formats without the given flag set.
1176          * A test on Windows using a Radeon 9500pro on WinXP (the driver doesn't support Stereo)
1177          * has indicated that a format without stereo is returned when stereo is unavailable.
1178          * So in case PFD_STEREO is set, formats that support it should have priority above formats
1179          * without. In case PFD_STEREO_DONTCARE is set, stereo is ignored.
1180          *
1181          * To summarize the following is most likely the correct behavior:
1182          * stereo not set -> prefer no-stereo formats, else also accept stereo formats
1183          * stereo set -> prefer stereo formats, else also accept no-stereo formats
1184          * stereo don't care -> it doesn't matter whether we get stereo or not
1185          *
1186          * In Wine we will treat no-stereo the same way as don't care because it makes
1187          * format selection even more complicated and second drivers with Stereo advertise
1188          * each format twice anyway.
1189          */
1190
1191         /* Doublebuffer, see the comments above */
1192         if( !(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) ) {
1193             if( ((ppfd->dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) &&
1194                 ((dwFlags & PFD_DOUBLEBUFFER) == (ppfd->dwFlags & PFD_DOUBLEBUFFER)) )
1195             {
1196                 bestDBuffer = dwFlags & PFD_DOUBLEBUFFER;
1197                 bestStereo = dwFlags & PFD_STEREO;
1198                 bestAlpha = alpha;
1199                 bestColor = color;
1200                 bestDepth = depth;
1201                 bestStencil = stencil;
1202                 bestAux = aux;
1203                 bestFormat = i;
1204                 continue;
1205             }
1206             if(bestDBuffer != -1 && (dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer)
1207                 continue;
1208         }
1209
1210         /* Stereo, see the comments above. */
1211         if( !(ppfd->dwFlags & PFD_STEREO_DONTCARE) ) {
1212             if( ((ppfd->dwFlags & PFD_STEREO) != bestStereo) &&
1213                 ((dwFlags & PFD_STEREO) == (ppfd->dwFlags & PFD_STEREO)) )
1214             {
1215                 bestDBuffer = dwFlags & PFD_DOUBLEBUFFER;
1216                 bestStereo = dwFlags & PFD_STEREO;
1217                 bestAlpha = alpha;
1218                 bestColor = color;
1219                 bestDepth = depth;
1220                 bestStencil = stencil;
1221                 bestAux = aux;
1222                 bestFormat = i;
1223                 continue;
1224             }
1225             if(bestStereo != -1 && (dwFlags & PFD_STEREO) != bestStereo)
1226                 continue;
1227         }
1228
1229         /* Below we will do a number of checks to select the 'best' pixelformat.
1230          * We assume the precedence cColorBits > cAlphaBits > cDepthBits > cStencilBits -> cAuxBuffers.
1231          * The code works by trying to match the most important options as close as possible.
1232          * When a reasonable format is found, we will try to match more options.
1233          * It appears (see the opengl32 test) that Windows opengl drivers ignore options
1234          * like cColorBits, cAlphaBits and friends if they are set to 0, so they are considered
1235          * as DONTCARE. At least Serious Sam TSE relies on this behavior. */
1236
1237         /* Color bits */
1238         if(ppfd->cColorBits) {
1239             if( ((ppfd->cColorBits > bestColor) && (color > bestColor)) ||
1240                 ((color >= ppfd->cColorBits) && (color < bestColor)) )
1241             {
1242                 bestDBuffer = dwFlags & PFD_DOUBLEBUFFER;
1243                 bestStereo = dwFlags & PFD_STEREO;
1244                 bestAlpha = alpha;
1245                 bestColor = color;
1246                 bestDepth = depth;
1247                 bestStencil = stencil;
1248                 bestAux = aux;
1249                 bestFormat = i;
1250                 continue;
1251             } else if(bestColor != color) {  /* Do further checks if the format is compatible */
1252                 TRACE("color mismatch for iPixelFormat=%d\n", i+1);
1253                 continue;
1254             }
1255         }
1256
1257         /* Alpha bits */
1258         if(ppfd->cAlphaBits) {
1259             if( ((ppfd->cAlphaBits > bestAlpha) && (alpha > bestAlpha)) ||
1260                 ((alpha >= ppfd->cAlphaBits) && (alpha < bestAlpha)) )
1261             {
1262                 bestDBuffer = dwFlags & PFD_DOUBLEBUFFER;
1263                 bestStereo = dwFlags & PFD_STEREO;
1264                 bestAlpha = alpha;
1265                 bestColor = color;
1266                 bestDepth = depth;
1267                 bestStencil = stencil;
1268                 bestAux = aux;
1269                 bestFormat = i;
1270                 continue;
1271             } else if(bestAlpha != alpha) {
1272                 TRACE("alpha mismatch for iPixelFormat=%d\n", i+1);
1273                 continue;
1274             }
1275         }
1276
1277         /* Depth bits */
1278         if(ppfd->cDepthBits) {
1279             if( ((ppfd->cDepthBits > bestDepth) && (depth > bestDepth)) ||
1280                 ((depth >= ppfd->cDepthBits) && (depth < bestDepth)) )
1281             {
1282                 bestDBuffer = dwFlags & PFD_DOUBLEBUFFER;
1283                 bestStereo = dwFlags & PFD_STEREO;
1284                 bestAlpha = alpha;
1285                 bestColor = color;
1286                 bestDepth = depth;
1287                 bestStencil = stencil;
1288                 bestAux = aux;
1289                 bestFormat = i;
1290                 continue;
1291             } else if(bestDepth != depth) {
1292                 TRACE("depth mismatch for iPixelFormat=%d\n", i+1);
1293                 continue;
1294             }
1295         }
1296
1297         /* Stencil bits */
1298         if(ppfd->cStencilBits) {
1299             if( ((ppfd->cStencilBits > bestStencil) && (stencil > bestStencil)) ||
1300                 ((stencil >= ppfd->cStencilBits) && (stencil < bestStencil)) )
1301             {
1302                 bestDBuffer = dwFlags & PFD_DOUBLEBUFFER;
1303                 bestStereo = dwFlags & PFD_STEREO;
1304                 bestAlpha = alpha;
1305                 bestColor = color;
1306                 bestDepth = depth;
1307                 bestStencil = stencil;
1308                 bestAux = aux;
1309                 bestFormat = i;
1310                 continue;
1311             } else if(bestStencil != stencil) {
1312                 TRACE("stencil mismatch for iPixelFormat=%d\n", i+1);
1313                 continue;
1314             }
1315         }
1316
1317         /* Aux buffers */
1318         if(ppfd->cAuxBuffers) {
1319             if( ((ppfd->cAuxBuffers > bestAux) && (aux > bestAux)) ||
1320                 ((aux >= ppfd->cAuxBuffers) && (aux < bestAux)) )
1321             {
1322                 bestDBuffer = dwFlags & PFD_DOUBLEBUFFER;
1323                 bestStereo = dwFlags & PFD_STEREO;
1324                 bestAlpha = alpha;
1325                 bestColor = color;
1326                 bestDepth = depth;
1327                 bestStencil = stencil;
1328                 bestAux = aux;
1329                 bestFormat = i;
1330                 continue;
1331             } else if(bestAux != aux) {
1332                 TRACE("aux mismatch for iPixelFormat=%d\n", i+1);
1333                 continue;
1334             }
1335         }
1336     }
1337
1338     if(bestFormat == -1) {
1339         TRACE("No matching mode was found returning 0\n");
1340         ret = 0;
1341     }
1342     else {
1343         ret = bestFormat+1; /* the return value should be a 1-based index */
1344         TRACE("Successfully found a matching mode, returning index: %d %x\n", ret, list[bestFormat].fmt_id);
1345     }
1346
1347     wine_tsx11_unlock();
1348
1349     return ret;
1350 }
1351 /**
1352  * X11DRV_DescribePixelFormat
1353  *
1354  * Get the pixel-format descriptor associated to the given id
1355  */
1356 int CDECL X11DRV_DescribePixelFormat(X11DRV_PDEVICE *physDev,
1357                                int iPixelFormat,
1358                                UINT nBytes,
1359                                PIXELFORMATDESCRIPTOR *ppfd) {
1360   /*XVisualInfo *vis;*/
1361   int value;
1362   int rb,gb,bb,ab;
1363   WineGLPixelFormat *fmt;
1364   int ret = 0;
1365   int fmt_count = 0;
1366
1367   if (!has_opengl()) return 0;
1368
1369   TRACE("(%p,%d,%d,%p)\n", physDev, iPixelFormat, nBytes, ppfd);
1370
1371   /* Look for the iPixelFormat in our list of supported formats. If it is supported we get the index in the FBConfig table and the number of supported formats back */
1372   fmt = ConvertPixelFormatWGLtoGLX(gdi_display, iPixelFormat, FALSE /* Offscreen */, &fmt_count);
1373   if (ppfd == NULL) {
1374       /* The application is only querying the number of pixelformats */
1375       return fmt_count;
1376   } else if(fmt == NULL) {
1377       WARN("unexpected iPixelFormat(%d): not >=1 and <=nFormats(%d), returning NULL!\n", iPixelFormat, fmt_count);
1378       return 0;
1379   }
1380
1381   if (nBytes < sizeof(PIXELFORMATDESCRIPTOR)) {
1382     ERR("Wrong structure size !\n");
1383     /* Should set error */
1384     return 0;
1385   }
1386
1387   ret = fmt_count;
1388
1389   memset(ppfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
1390   ppfd->nSize = sizeof(PIXELFORMATDESCRIPTOR);
1391   ppfd->nVersion = 1;
1392
1393   /* These flags are always the same... */
1394   ppfd->dwFlags = PFD_SUPPORT_OPENGL;
1395   /* Now the flags extracted from the Visual */
1396
1397   wine_tsx11_lock();
1398
1399   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DRAWABLE_TYPE, &value);
1400   if(value & GLX_WINDOW_BIT)
1401       ppfd->dwFlags |= PFD_DRAW_TO_WINDOW;
1402
1403   /* On Windows bitmap rendering is only offered using the GDI Software renderer. We reserve some formats (see get_formats for more info)
1404    * for bitmap rendering since we require indirect rendering for this. Further pixel format logs of a GeforceFX, Geforce8800GT, Radeon HD3400 and a
1405    * Radeon 9000 indicated that all bitmap formats have PFD_SUPPORT_GDI. Except for 2 formats on the Radeon 9000 none of the hw accelerated formats
1406    * offered the GDI bit either. */
1407   ppfd->dwFlags |= fmt->dwFlags & (PFD_DRAW_TO_BITMAP | PFD_SUPPORT_GDI);
1408
1409   /* PFD_GENERIC_FORMAT - gdi software rendering
1410    * PFD_GENERIC_ACCELERATED - some parts are accelerated by a display driver (MCD e.g. 3dfx minigl)
1411    * none set - full hardware accelerated by a ICD
1412    *
1413    * We only set PFD_GENERIC_FORMAT on bitmap formats (see get_formats) as that's what ATI and Nvidia Windows drivers do  */
1414   ppfd->dwFlags |= fmt->dwFlags & (PFD_GENERIC_FORMAT | PFD_GENERIC_ACCELERATED);
1415
1416   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DOUBLEBUFFER, &value);
1417   if (value) {
1418       ppfd->dwFlags |= PFD_DOUBLEBUFFER;
1419       ppfd->dwFlags &= ~PFD_SUPPORT_GDI;
1420   }
1421   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_STEREO, &value); if (value) ppfd->dwFlags |= PFD_STEREO;
1422
1423   /* Pixel type */
1424   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_RENDER_TYPE, &value);
1425   if (value & GLX_RGBA_BIT)
1426     ppfd->iPixelType = PFD_TYPE_RGBA;
1427   else
1428     ppfd->iPixelType = PFD_TYPE_COLORINDEX;
1429
1430   /* Color bits */
1431   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_BUFFER_SIZE, &value);
1432   ppfd->cColorBits = value;
1433
1434   /* Red, green, blue and alpha bits / shifts */
1435   if (ppfd->iPixelType == PFD_TYPE_RGBA) {
1436     pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_RED_SIZE, &rb);
1437     pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_GREEN_SIZE, &gb);
1438     pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_BLUE_SIZE, &bb);
1439     pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ALPHA_SIZE, &ab);
1440
1441     ppfd->cRedBits = rb;
1442     ppfd->cRedShift = gb + bb + ab;
1443     ppfd->cBlueBits = bb;
1444     ppfd->cBlueShift = ab;
1445     ppfd->cGreenBits = gb;
1446     ppfd->cGreenShift = bb + ab;
1447     ppfd->cAlphaBits = ab;
1448     ppfd->cAlphaShift = 0;
1449   } else {
1450     ppfd->cRedBits = 0;
1451     ppfd->cRedShift = 0;
1452     ppfd->cBlueBits = 0;
1453     ppfd->cBlueShift = 0;
1454     ppfd->cGreenBits = 0;
1455     ppfd->cGreenShift = 0;
1456     ppfd->cAlphaBits = 0;
1457     ppfd->cAlphaShift = 0;
1458   }
1459
1460   /* Accum RGBA bits */
1461   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_RED_SIZE, &rb);
1462   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_GREEN_SIZE, &gb);
1463   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_BLUE_SIZE, &bb);
1464   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_ALPHA_SIZE, &ab);
1465
1466   ppfd->cAccumBits = rb+gb+bb+ab;
1467   ppfd->cAccumRedBits = rb;
1468   ppfd->cAccumGreenBits = gb;
1469   ppfd->cAccumBlueBits = bb;
1470   ppfd->cAccumAlphaBits = ab;
1471
1472   /* Aux bits */
1473   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_AUX_BUFFERS, &value);
1474   ppfd->cAuxBuffers = value;
1475
1476   /* Depth bits */
1477   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DEPTH_SIZE, &value);
1478   ppfd->cDepthBits = value;
1479
1480   /* stencil bits */
1481   pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_STENCIL_SIZE, &value);
1482   ppfd->cStencilBits = value;
1483
1484   wine_tsx11_unlock();
1485
1486   ppfd->iLayerType = PFD_MAIN_PLANE;
1487
1488   if (TRACE_ON(wgl)) {
1489     dump_PIXELFORMATDESCRIPTOR(ppfd);
1490   }
1491
1492   return ret;
1493 }
1494
1495 /**
1496  * X11DRV_GetPixelFormat
1497  *
1498  * Get the pixel-format id used by this DC
1499  */
1500 int CDECL X11DRV_GetPixelFormat(X11DRV_PDEVICE *physDev) {
1501   WineGLPixelFormat *fmt;
1502   int tmp;
1503   TRACE("(%p)\n", physDev);
1504
1505   if (!physDev->current_pf) return 0;  /* not set yet */
1506
1507   fmt = ConvertPixelFormatWGLtoGLX(gdi_display, physDev->current_pf, TRUE, &tmp);
1508   if(!fmt)
1509   {
1510     ERR("Unable to find a WineGLPixelFormat for iPixelFormat=%d\n", physDev->current_pf);
1511     return 0;
1512   }
1513   else if(fmt->offscreenOnly)
1514   {
1515     /* Offscreen formats can't be used with traditional WGL calls.
1516      * As has been verified on Windows GetPixelFormat doesn't fail but returns iPixelFormat=1. */
1517      TRACE("Returning iPixelFormat=1 for offscreen format: %d\n", fmt->iPixelFormat);
1518     return 1;
1519   }
1520
1521   TRACE("(%p): returns %d\n", physDev, physDev->current_pf);
1522   return physDev->current_pf;
1523 }
1524
1525 /* This function is the core of X11DRV_SetPixelFormat and X11DRV_SetPixelFormatWINE.
1526  * Both functions are the same except that X11DRV_SetPixelFormatWINE allows you to
1527  * set the pixel format multiple times. */
1528 static BOOL internal_SetPixelFormat(X11DRV_PDEVICE *physDev,
1529                            int iPixelFormat,
1530                            const PIXELFORMATDESCRIPTOR *ppfd) {
1531     WineGLPixelFormat *fmt;
1532     int value;
1533     HWND hwnd;
1534
1535     /* SetPixelFormat is not allowed on the X root_window e.g. GetDC(0) */
1536     if(get_glxdrawable(physDev) == root_window)
1537     {
1538         ERR("Invalid operation on root_window\n");
1539         return FALSE;
1540     }
1541
1542     /* Check if iPixelFormat is in our list of supported formats to see if it is supported. */
1543     fmt = ConvertPixelFormatWGLtoGLX(gdi_display, iPixelFormat, FALSE /* Offscreen */, &value);
1544     if(!fmt) {
1545         ERR("Invalid iPixelFormat: %d\n", iPixelFormat);
1546         return FALSE;
1547     }
1548
1549     wine_tsx11_lock();
1550     pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DRAWABLE_TYPE, &value);
1551     wine_tsx11_unlock();
1552
1553     hwnd = WindowFromDC(physDev->hdc);
1554     if(hwnd) {
1555         if(!(value&GLX_WINDOW_BIT)) {
1556             WARN("Pixel format %d is not compatible for window rendering\n", iPixelFormat);
1557             return FALSE;
1558         }
1559
1560         if(!SendMessageW(hwnd, WM_X11DRV_SET_WIN_FORMAT, (WPARAM)fmt->fmt_id, 0)) {
1561             ERR("Couldn't set format of the window, returning failure\n");
1562             return FALSE;
1563         }
1564     }
1565     else if(physDev->bitmap) {
1566         if(!(value&GLX_PIXMAP_BIT)) {
1567             WARN("Pixel format %d is not compatible for bitmap rendering\n", iPixelFormat);
1568             return FALSE;
1569         }
1570
1571         physDev->bitmap->glxpixmap = create_bitmap_glxpixmap(physDev, fmt);
1572         if(!physDev->bitmap->glxpixmap) {
1573             WARN("Couldn't create glxpixmap for pixel format %d\n", iPixelFormat);
1574             return FALSE;
1575         }
1576     }
1577     else {
1578         FIXME("called on a non-window, non-bitmap object?\n");
1579     }
1580
1581     physDev->current_pf = iPixelFormat;
1582
1583     if (TRACE_ON(wgl)) {
1584         int gl_test = 0;
1585
1586         wine_tsx11_lock();
1587         gl_test = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_FBCONFIG_ID, &value);
1588         if (gl_test) {
1589            ERR("Failed to retrieve FBCONFIG_ID from GLXFBConfig, expect problems.\n");
1590         } else {
1591             TRACE(" FBConfig have :\n");
1592             TRACE(" - FBCONFIG_ID   0x%x\n", value);
1593             pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_VISUAL_ID, &value);
1594             TRACE(" - VISUAL_ID     0x%x\n", value);
1595             pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DRAWABLE_TYPE, &value);
1596             TRACE(" - DRAWABLE_TYPE 0x%x\n", value);
1597         }
1598         wine_tsx11_unlock();
1599     }
1600     return TRUE;
1601 }
1602
1603
1604 /**
1605  * X11DRV_SetPixelFormat
1606  *
1607  * Set the pixel-format id used by this DC
1608  */
1609 BOOL CDECL X11DRV_SetPixelFormat(X11DRV_PDEVICE *physDev,
1610                            int iPixelFormat,
1611                            const PIXELFORMATDESCRIPTOR *ppfd) {
1612     TRACE("(%p,%d,%p)\n", physDev, iPixelFormat, ppfd);
1613
1614     if (!has_opengl()) return FALSE;
1615
1616     if(physDev->current_pf)  /* cannot change it if already set */
1617         return (physDev->current_pf == iPixelFormat);
1618
1619     return internal_SetPixelFormat(physDev, iPixelFormat, ppfd);
1620 }
1621
1622 /**
1623  * X11DRV_wglCopyContext
1624  *
1625  * For OpenGL32 wglCopyContext.
1626  */
1627 BOOL CDECL X11DRV_wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask) {
1628     Wine_GLContext *src = (Wine_GLContext*)hglrcSrc;
1629     Wine_GLContext *dst = (Wine_GLContext*)hglrcDst;
1630
1631     TRACE("hglrcSrc: (%p), hglrcDst: (%p), mask: %#x\n", hglrcSrc, hglrcDst, mask);
1632
1633     /* There is a slight difference in the way GL contexts share display lists in WGL and GLX.
1634      * In case of GLX you need to specify this at context creation time but in case of WGL you
1635      * do this using wglShareLists which you can call after creating the context.
1636      * To emulate WGL we try to delay the creation of the context until wglShareLists or wglMakeCurrent.
1637      * Up to now that works fine.
1638      *
1639      * The delayed GLX context creation could cause issues for wglCopyContext as it might get called
1640      * when there is no GLX context yet. The chance this will cause problems is small as at the time of
1641      * writing Wine has had OpenGL support for more than 7 years and this function has remained a stub
1642      * ever since then.
1643      */
1644     if(!src->ctx || !dst->ctx) {
1645         /* NOTE: As a special case, if both GLX contexts are NULL, that means
1646          * neither WGL context was made current. In that case, both contexts
1647          * are in a default state, so any copy would no-op.
1648          */
1649         if(!src->ctx && !dst->ctx) {
1650             TRACE("No source or destination contexts set. No-op.\n");
1651             return TRUE;
1652         }
1653
1654         if (!src->ctx) {
1655             wine_tsx11_lock();
1656             src->ctx = create_glxcontext(gdi_display, src, NULL);
1657             TRACE(" created a delayed OpenGL context (%p)\n", src->ctx);
1658         }
1659         else if (!dst->ctx) {
1660             wine_tsx11_lock();
1661             dst->ctx = create_glxcontext(gdi_display, dst, NULL);
1662             TRACE(" created a delayed OpenGL context (%p)\n", dst->ctx);
1663         }
1664     }
1665     else
1666         wine_tsx11_lock();
1667
1668     pglXCopyContext(gdi_display, src->ctx, dst->ctx, mask);
1669     wine_tsx11_unlock();
1670
1671     /* As opposed to wglCopyContext, glXCopyContext doesn't return anything, so hopefully we passed */
1672     return TRUE;
1673 }
1674
1675 /**
1676  * X11DRV_wglCreateContext
1677  *
1678  * For OpenGL32 wglCreateContext.
1679  */
1680 HGLRC CDECL X11DRV_wglCreateContext(X11DRV_PDEVICE *physDev)
1681 {
1682     Wine_GLContext *ret;
1683     WineGLPixelFormat *fmt;
1684     int hdcPF = physDev->current_pf;
1685     int fmt_count = 0;
1686     HDC hdc = physDev->hdc;
1687
1688     TRACE("(%p)->(PF:%d)\n", hdc, hdcPF);
1689
1690     if (!has_opengl()) return 0;
1691
1692     fmt = ConvertPixelFormatWGLtoGLX(gdi_display, hdcPF, TRUE /* Offscreen */, &fmt_count);
1693     /* We can render using the iPixelFormat (1) of Wine's Main visual AND using some offscreen formats.
1694      * Note that standard WGL-calls don't recognize offscreen-only formats. For that reason pbuffers
1695      * use a sort of 'proxy' HDC (wglGetPbufferDCARB).
1696      * If this fails something is very wrong on the system. */
1697     if(!fmt) {
1698         ERR("Cannot get FB Config for iPixelFormat %d, expect problems!\n", hdcPF);
1699         SetLastError(ERROR_INVALID_PIXEL_FORMAT);
1700         return NULL;
1701     }
1702
1703     /* The context will be allocated in the wglMakeCurrent call */
1704     wine_tsx11_lock();
1705     ret = alloc_context();
1706     wine_tsx11_unlock();
1707     ret->hdc = hdc;
1708     ret->fmt = fmt;
1709
1710     /*ret->vis = vis;*/
1711     ret->vis = pglXGetVisualFromFBConfig(gdi_display, fmt->fbconfig);
1712
1713     TRACE(" creating context %p (GL context creation delayed)\n", ret);
1714     return (HGLRC) ret;
1715 }
1716
1717 /**
1718  * X11DRV_wglDeleteContext
1719  *
1720  * For OpenGL32 wglDeleteContext.
1721  */
1722 BOOL CDECL X11DRV_wglDeleteContext(HGLRC hglrc)
1723 {
1724     Wine_GLContext *ctx = (Wine_GLContext *) hglrc;
1725     BOOL ret = TRUE;
1726
1727     TRACE("(%p)\n", hglrc);
1728
1729     if (!has_opengl()) return 0;
1730
1731     wine_tsx11_lock();
1732     /* A game (Half Life not to name it) deletes twice the same context,
1733     * so make sure it is valid first */
1734     if (is_valid_context( ctx ))
1735     {
1736         if (ctx->ctx) pglXDestroyContext(gdi_display, ctx->ctx);
1737         free_context(ctx);
1738     }
1739     else
1740     {
1741         WARN("Error deleting context !\n");
1742         SetLastError(ERROR_INVALID_HANDLE);
1743         ret = FALSE;
1744     }
1745     wine_tsx11_unlock();
1746
1747     return ret;
1748 }
1749
1750 /**
1751  * X11DRV_wglGetCurrentReadDCARB
1752  *
1753  * For OpenGL32 wglGetCurrentReadDCARB.
1754  */
1755 static HDC WINAPI X11DRV_wglGetCurrentReadDCARB(void)
1756 {
1757     HDC ret = 0;
1758     Wine_GLContext *ctx = NtCurrentTeb()->glContext;
1759
1760     if (ctx) ret = ctx->read_hdc;
1761
1762     TRACE(" returning %p (GL drawable %lu)\n", ret, ctx ? ctx->drawables[1] : 0);
1763     return ret;
1764 }
1765
1766 /**
1767  * X11DRV_wglGetProcAddress
1768  *
1769  * For OpenGL32 wglGetProcAddress.
1770  */
1771 PROC CDECL X11DRV_wglGetProcAddress(LPCSTR lpszProc)
1772 {
1773     int i, j;
1774     const WineGLExtension *ext;
1775
1776     int padding = 32 - strlen(lpszProc);
1777     if (padding < 0)
1778         padding = 0;
1779
1780     if (!has_opengl()) return NULL;
1781
1782     /* Check the table of WGL extensions to see if we need to return a WGL extension
1783      * or a function pointer to a native OpenGL function. */
1784     if(strncmp(lpszProc, "wgl", 3) != 0) {
1785         return pglXGetProcAddressARB((const GLubyte*)lpszProc);
1786     } else {
1787         TRACE("('%s'):%*s", lpszProc, padding, " ");
1788         for (i = 0; i < WineGLExtensionListSize; ++i) {
1789             ext = WineGLExtensionList[i];
1790             for (j = 0; ext->extEntryPoints[j].funcName; ++j) {
1791                 if (strcmp(ext->extEntryPoints[j].funcName, lpszProc) == 0) {
1792                     TRACE("(%p) - WineGL\n", ext->extEntryPoints[j].funcAddress);
1793                     return ext->extEntryPoints[j].funcAddress;
1794                 }
1795             }
1796         }
1797     }
1798
1799     WARN("(%s) - not found\n", lpszProc);
1800     return NULL;
1801 }
1802
1803 /**
1804  * X11DRV_wglMakeCurrent
1805  *
1806  * For OpenGL32 wglMakeCurrent.
1807  */
1808 BOOL CDECL X11DRV_wglMakeCurrent(X11DRV_PDEVICE *physDev, HGLRC hglrc) {
1809     BOOL ret;
1810     HDC hdc = physDev->hdc;
1811     DWORD type = GetObjectType(hdc);
1812     Wine_GLContext *ctx = (Wine_GLContext *) hglrc;
1813
1814     TRACE("(%p,%p)\n", hdc, hglrc);
1815
1816     if (!has_opengl()) return FALSE;
1817
1818     wine_tsx11_lock();
1819     if (hglrc == NULL) {
1820         ret = pglXMakeCurrent(gdi_display, None, NULL);
1821         NtCurrentTeb()->glContext = NULL;
1822     } else if (ctx->fmt->iPixelFormat != physDev->current_pf) {
1823         WARN( "mismatched pixel format hdc %p %u ctx %p %u\n",
1824               hdc, physDev->current_pf, ctx, ctx->fmt->iPixelFormat );
1825         SetLastError( ERROR_INVALID_PIXEL_FORMAT );
1826         ret = FALSE;
1827     } else {
1828         Drawable drawable = get_glxdrawable(physDev);
1829         if (ctx->ctx == NULL) {
1830             /* The describe lines below are for debugging purposes only */
1831             if (TRACE_ON(wgl)) {
1832                 describeDrawable(physDev);
1833                 describeContext(ctx);
1834             }
1835
1836             /* Create a GLX context using the same visual as chosen earlier in wglCreateContext.
1837              * We are certain that the drawable and context are compatible as we only allow compatible formats.
1838              */
1839             TRACE(" Creating GLX Context\n");
1840             ctx->ctx = create_glxcontext(gdi_display, ctx, NULL);
1841             TRACE(" created a delayed OpenGL context (%p)\n", ctx->ctx);
1842         }
1843         TRACE(" make current for dis %p, drawable %p, ctx %p\n", gdi_display, (void*) drawable, ctx->ctx);
1844         ret = pglXMakeCurrent(gdi_display, drawable, ctx->ctx);
1845         NtCurrentTeb()->glContext = ctx;
1846         if(ret)
1847         {
1848             ctx->hdc = hdc;
1849             ctx->read_hdc = hdc;
1850             ctx->drawables[0] = drawable;
1851             ctx->drawables[1] = drawable;
1852             ctx->refresh_drawables = FALSE;
1853
1854             if (type == OBJ_MEMDC)
1855             {
1856                 ctx->do_escape = TRUE;
1857                 pglDrawBuffer(GL_FRONT_LEFT);
1858             }
1859         }
1860     }
1861     wine_tsx11_unlock();
1862     TRACE(" returning %s\n", (ret ? "True" : "False"));
1863     return ret;
1864 }
1865
1866 /**
1867  * X11DRV_wglMakeContextCurrentARB
1868  *
1869  * For OpenGL32 wglMakeContextCurrentARB
1870  */
1871 BOOL CDECL X11DRV_wglMakeContextCurrentARB(X11DRV_PDEVICE* pDrawDev, X11DRV_PDEVICE* pReadDev, HGLRC hglrc)
1872 {
1873     BOOL ret;
1874
1875     TRACE("(%p,%p,%p)\n", pDrawDev, pReadDev, hglrc);
1876
1877     if (!has_opengl()) return 0;
1878
1879     wine_tsx11_lock();
1880     if (hglrc == NULL) {
1881         ret = pglXMakeCurrent(gdi_display, None, NULL);
1882         NtCurrentTeb()->glContext = NULL;
1883     } else {
1884         if (NULL == pglXMakeContextCurrent) {
1885             ret = FALSE;
1886         } else {
1887             Wine_GLContext *ctx = (Wine_GLContext *) hglrc;
1888             Drawable d_draw = get_glxdrawable(pDrawDev);
1889             Drawable d_read = get_glxdrawable(pReadDev);
1890
1891             if (ctx->ctx == NULL) {
1892                 ctx->ctx = create_glxcontext(gdi_display, ctx, NULL);
1893                 TRACE(" created a delayed OpenGL context (%p)\n", ctx->ctx);
1894             }
1895             ctx->hdc = pDrawDev->hdc;
1896             ctx->read_hdc = pReadDev->hdc;
1897             ctx->drawables[0] = d_draw;
1898             ctx->drawables[1] = d_read;
1899             ctx->refresh_drawables = FALSE;
1900             ret = pglXMakeContextCurrent(gdi_display, d_draw, d_read, ctx->ctx);
1901             NtCurrentTeb()->glContext = ctx;
1902         }
1903     }
1904     wine_tsx11_unlock();
1905
1906     TRACE(" returning %s\n", (ret ? "True" : "False"));
1907     return ret;
1908 }
1909
1910 /**
1911  * X11DRV_wglShareLists
1912  *
1913  * For OpenGL32 wglShareLists.
1914  */
1915 BOOL CDECL X11DRV_wglShareLists(HGLRC hglrc1, HGLRC hglrc2) {
1916     Wine_GLContext *org  = (Wine_GLContext *) hglrc1;
1917     Wine_GLContext *dest = (Wine_GLContext *) hglrc2;
1918
1919     TRACE("(%p, %p)\n", org, dest);
1920
1921     if (!has_opengl()) return FALSE;
1922
1923     if (NULL != dest && dest->ctx != NULL) {
1924         ERR("Could not share display lists, context already created !\n");
1925         return FALSE;
1926     } else {
1927         if(org && dest && (GetObjectType(org->hdc) == OBJ_MEMDC) ^ (GetObjectType(dest->hdc) == OBJ_MEMDC)) {
1928             WARN("Attempting to share a context between a direct and indirect rendering context, expect issues!\n");
1929         }
1930
1931         if (org->ctx == NULL) {
1932             wine_tsx11_lock();
1933             describeContext(org);
1934
1935             org->ctx = create_glxcontext(gdi_display, org, NULL);
1936             wine_tsx11_unlock();
1937             TRACE(" created a delayed OpenGL context (%p) for Wine context %p\n", org->ctx, org);
1938         }
1939         if (NULL != dest) {
1940             wine_tsx11_lock();
1941             describeContext(dest);
1942             dest->ctx = create_glxcontext(gdi_display, dest, org->ctx);
1943             wine_tsx11_unlock();
1944             TRACE(" created a delayed OpenGL context (%p) for Wine context %p sharing lists with OpenGL ctx %p\n", dest->ctx, dest, org->ctx);
1945             return TRUE;
1946         }
1947     }
1948     return FALSE;
1949 }
1950
1951 static BOOL internal_wglUseFontBitmaps(HDC hdc, DWORD first, DWORD count, DWORD listBase, DWORD (WINAPI *GetGlyphOutline_ptr)(HDC,UINT,UINT,LPGLYPHMETRICS,DWORD,LPVOID,const MAT2*))
1952 {
1953      /* We are running using client-side rendering fonts... */
1954      GLYPHMETRICS gm;
1955      unsigned int glyph, size = 0;
1956      void *bitmap = NULL, *gl_bitmap = NULL;
1957      int org_alignment;
1958
1959      wine_tsx11_lock();
1960      pglGetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment);
1961      pglPixelStorei(GL_UNPACK_ALIGNMENT, 4);
1962      wine_tsx11_unlock();
1963
1964      for (glyph = first; glyph < first + count; glyph++) {
1965          static const MAT2 identity = { {0,1},{0,0},{0,0},{0,1} };
1966          unsigned int needed_size = GetGlyphOutline_ptr(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
1967          unsigned int height, width_int;
1968
1969          TRACE("Glyph : %3d / List : %d\n", glyph, listBase);
1970          if (needed_size == GDI_ERROR) {
1971              TRACE("  - needed size : %d (GDI_ERROR)\n", needed_size);
1972              goto error;
1973          } else {
1974              TRACE("  - needed size : %d\n", needed_size);
1975          }
1976
1977          if (needed_size > size) {
1978              size = needed_size;
1979              HeapFree(GetProcessHeap(), 0, bitmap);
1980              HeapFree(GetProcessHeap(), 0, gl_bitmap);
1981              bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1982              gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1983          }
1984          if (GetGlyphOutline_ptr(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, &identity) == GDI_ERROR)
1985              goto error;
1986          if (TRACE_ON(wgl)) {
1987              unsigned int height, width, bitmask;
1988              unsigned char *bitmap_ = bitmap;
1989
1990              TRACE("  - bbox : %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY);
1991              TRACE("  - origin : (%d , %d)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y);
1992              TRACE("  - increment : %d - %d\n", gm.gmCellIncX, gm.gmCellIncY);
1993              if (needed_size != 0) {
1994                  TRACE("  - bitmap :\n");
1995                  for (height = 0; height < gm.gmBlackBoxY; height++) {
1996                      TRACE("      ");
1997                      for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) {
1998                          if (bitmask == 0) {
1999                              bitmap_ += 1;
2000                              bitmask = 0x80;
2001                          }
2002                          if (*bitmap_ & bitmask)
2003                              TRACE("*");
2004                          else
2005                              TRACE(" ");
2006                      }
2007                      bitmap_ += (4 - ((UINT_PTR)bitmap_ & 0x03));
2008                      TRACE("\n");
2009                  }
2010              }
2011          }
2012
2013          /* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
2014          * glyph for it to be drawn properly.
2015          */
2016          if (needed_size != 0) {
2017              width_int = (gm.gmBlackBoxX + 31) / 32;
2018              for (height = 0; height < gm.gmBlackBoxY; height++) {
2019                  unsigned int width;
2020                  for (width = 0; width < width_int; width++) {
2021                      ((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] =
2022                      ((int *) bitmap)[height * width_int + width];
2023                  }
2024              }
2025          }
2026
2027          wine_tsx11_lock();
2028          pglNewList(listBase++, GL_COMPILE);
2029          if (needed_size != 0) {
2030              pglBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
2031                      0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y,
2032                      gm.gmCellIncX, gm.gmCellIncY,
2033                      gl_bitmap);
2034          } else {
2035              /* This is the case of 'empty' glyphs like the space character */
2036              pglBitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL);
2037          }
2038          pglEndList();
2039          wine_tsx11_unlock();
2040      }
2041
2042      wine_tsx11_lock();
2043      pglPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
2044      wine_tsx11_unlock();
2045
2046      HeapFree(GetProcessHeap(), 0, bitmap);
2047      HeapFree(GetProcessHeap(), 0, gl_bitmap);
2048      return TRUE;
2049
2050   error:
2051      wine_tsx11_lock();
2052      pglPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
2053      wine_tsx11_unlock();
2054
2055      HeapFree(GetProcessHeap(), 0, bitmap);
2056      HeapFree(GetProcessHeap(), 0, gl_bitmap);
2057      return FALSE;
2058 }
2059
2060 /**
2061  * X11DRV_wglUseFontBitmapsA
2062  *
2063  * For OpenGL32 wglUseFontBitmapsA.
2064  */
2065 BOOL CDECL X11DRV_wglUseFontBitmapsA(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
2066 {
2067      Font fid = physDev->font;
2068
2069      TRACE("(%p, %d, %d, %d) using font %ld\n", physDev->hdc, first, count, listBase, fid);
2070
2071      if (!has_opengl()) return FALSE;
2072
2073      if (fid == 0) {
2074          return internal_wglUseFontBitmaps(physDev->hdc, first, count, listBase, GetGlyphOutlineA);
2075      }
2076
2077      wine_tsx11_lock();
2078      /* I assume that the glyphs are at the same position for X and for Windows */
2079      pglXUseXFont(fid, first, count, listBase);
2080      wine_tsx11_unlock();
2081      return TRUE;
2082 }
2083
2084 /**
2085  * X11DRV_wglUseFontBitmapsW
2086  *
2087  * For OpenGL32 wglUseFontBitmapsW.
2088  */
2089 BOOL CDECL X11DRV_wglUseFontBitmapsW(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
2090 {
2091      Font fid = physDev->font;
2092
2093      TRACE("(%p, %d, %d, %d) using font %ld\n", physDev->hdc, first, count, listBase, fid);
2094
2095      if (!has_opengl()) return FALSE;
2096
2097      if (fid == 0) {
2098          return internal_wglUseFontBitmaps(physDev->hdc, first, count, listBase, GetGlyphOutlineW);
2099      }
2100
2101      WARN("Using the glX API for the WCHAR variant - some characters may come out incorrectly !\n");
2102
2103      wine_tsx11_lock();
2104      /* I assume that the glyphs are at the same position for X and for Windows */
2105      pglXUseXFont(fid, first, count, listBase);
2106      wine_tsx11_unlock();
2107      return TRUE;
2108 }
2109
2110 /* WGL helper function which handles differences in glGetIntegerv from WGL and GLX */
2111 static void WINAPI X11DRV_wglGetIntegerv(GLenum pname, GLint* params)
2112 {
2113     wine_tsx11_lock();
2114     switch(pname)
2115     {
2116     case GL_DEPTH_BITS:
2117         {
2118             Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2119
2120             pglGetIntegerv(pname, params);
2121             /**
2122              * if we cannot find a Wine Context
2123              * we only have the default wine desktop context,
2124              * so if we have only a 24 depth say we have 32
2125              */
2126             if (!ctx && *params == 24) {
2127                 *params = 32;
2128             }
2129             TRACE("returns GL_DEPTH_BITS as '%d'\n", *params);
2130             break;
2131         }
2132     case GL_ALPHA_BITS:
2133         {
2134             Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2135
2136             pglXGetFBConfigAttrib(gdi_display, ctx->fmt->fbconfig, GLX_ALPHA_SIZE, params);
2137             TRACE("returns GL_ALPHA_BITS as '%d'\n", *params);
2138             break;
2139         }
2140     default:
2141         pglGetIntegerv(pname, params);
2142         break;
2143     }
2144     wine_tsx11_unlock();
2145 }
2146
2147 void flush_gl_drawable(X11DRV_PDEVICE *physDev)
2148 {
2149     int w, h;
2150
2151     if (!physDev->gl_copy)
2152         return;
2153
2154     w = physDev->dc_rect.right - physDev->dc_rect.left;
2155     h = physDev->dc_rect.bottom - physDev->dc_rect.top;
2156
2157     if(w > 0 && h > 0) {
2158         Drawable src = physDev->pixmap;
2159         if(!src) src = physDev->gl_drawable;
2160
2161         /* The GL drawable may be lagged behind if we don't flush first, so
2162          * flush the display make sure we copy up-to-date data */
2163         wine_tsx11_lock();
2164         XFlush(gdi_display);
2165         XSetFunction(gdi_display, physDev->gc, GXcopy);
2166         XCopyArea(gdi_display, src, physDev->drawable, physDev->gc, 0, 0, w, h,
2167                   physDev->dc_rect.left, physDev->dc_rect.top);
2168         wine_tsx11_unlock();
2169     }
2170 }
2171
2172
2173 static void WINAPI X11DRV_wglFinish(void)
2174 {
2175     Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2176     enum x11drv_escape_codes code = X11DRV_FLUSH_GL_DRAWABLE;
2177
2178     wine_tsx11_lock();
2179     sync_context(ctx);
2180     pglFinish();
2181     wine_tsx11_unlock();
2182     if (ctx) ExtEscape(ctx->hdc, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, 0, NULL );
2183 }
2184
2185 static void WINAPI X11DRV_wglFlush(void)
2186 {
2187     Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2188     enum x11drv_escape_codes code = X11DRV_FLUSH_GL_DRAWABLE;
2189
2190     wine_tsx11_lock();
2191     sync_context(ctx);
2192     pglFlush();
2193     wine_tsx11_unlock();
2194     if (ctx) ExtEscape(ctx->hdc, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, 0, NULL );
2195 }
2196
2197 /**
2198  * X11DRV_wglGetExtensionsStringARB
2199  *
2200  * WGL_ARB_extensions_string: wglGetExtensionsStringARB
2201  */
2202 static const char * WINAPI X11DRV_wglGetExtensionsStringARB(HDC hdc) {
2203     TRACE("() returning \"%s\"\n", WineGLInfo.wglExtensions);
2204     return WineGLInfo.wglExtensions;
2205 }
2206
2207 /**
2208  * X11DRV_wglCreatePbufferARB
2209  *
2210  * WGL_ARB_pbuffer: wglCreatePbufferARB
2211  */
2212 static HPBUFFERARB WINAPI X11DRV_wglCreatePbufferARB(HDC hdc, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList)
2213 {
2214     Wine_GLPBuffer* object = NULL;
2215     WineGLPixelFormat *fmt = NULL;
2216     int nCfgs = 0;
2217     int attribs[256];
2218     int nAttribs = 0;
2219
2220     TRACE("(%p, %d, %d, %d, %p)\n", hdc, iPixelFormat, iWidth, iHeight, piAttribList);
2221
2222     if (0 >= iPixelFormat) {
2223         ERR("(%p): unexpected iPixelFormat(%d) <= 0, returns NULL\n", hdc, iPixelFormat);
2224         SetLastError(ERROR_INVALID_PIXEL_FORMAT);
2225         return NULL; /* unexpected error */
2226     }
2227
2228     /* Convert the WGL pixelformat to a GLX format, if it fails then the format is invalid */
2229     fmt = ConvertPixelFormatWGLtoGLX(gdi_display, iPixelFormat, TRUE /* Offscreen */, &nCfgs);
2230     if(!fmt) {
2231         ERR("(%p): unexpected iPixelFormat(%d) > nFormats(%d), returns NULL\n", hdc, iPixelFormat, nCfgs);
2232         SetLastError(ERROR_INVALID_PIXEL_FORMAT);
2233         goto create_failed; /* unexpected error */
2234     }
2235
2236     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(Wine_GLPBuffer));
2237     if (NULL == object) {
2238         SetLastError(ERROR_NO_SYSTEM_RESOURCES);
2239         goto create_failed; /* unexpected error */
2240     }
2241     object->hdc = hdc;
2242     object->display = gdi_display;
2243     object->width = iWidth;
2244     object->height = iHeight;
2245     object->fmt = fmt;
2246
2247     PUSH2(attribs, GLX_PBUFFER_WIDTH,  iWidth);
2248     PUSH2(attribs, GLX_PBUFFER_HEIGHT, iHeight);
2249     while (piAttribList && 0 != *piAttribList) {
2250         int attr_v;
2251         switch (*piAttribList) {
2252             case WGL_PBUFFER_LARGEST_ARB: {
2253                 ++piAttribList;
2254                 attr_v = *piAttribList;
2255                 TRACE("WGL_LARGEST_PBUFFER_ARB = %d\n", attr_v);
2256                 PUSH2(attribs, GLX_LARGEST_PBUFFER, attr_v);
2257                 break;
2258             }
2259
2260             case WGL_TEXTURE_FORMAT_ARB: {
2261                 ++piAttribList;
2262                 attr_v = *piAttribList;
2263                 TRACE("WGL_render_texture Attribute: WGL_TEXTURE_FORMAT_ARB as %x\n", attr_v);
2264                 if (use_render_texture_ati) {
2265                     int type = 0;
2266                     switch (attr_v) {
2267                         case WGL_NO_TEXTURE_ARB: type = GLX_NO_TEXTURE_ATI; break ;
2268                         case WGL_TEXTURE_RGB_ARB: type = GLX_TEXTURE_RGB_ATI; break ;
2269                         case WGL_TEXTURE_RGBA_ARB: type = GLX_TEXTURE_RGBA_ATI; break ;
2270                         default:
2271                             SetLastError(ERROR_INVALID_DATA);
2272                             goto create_failed;
2273                     }
2274                     object->use_render_texture = 1;
2275                     PUSH2(attribs, GLX_TEXTURE_FORMAT_ATI, type);
2276                 } else {
2277                     if (WGL_NO_TEXTURE_ARB == attr_v) {
2278                         object->use_render_texture = 0;
2279                     } else {
2280                         if (!use_render_texture_emulation) {
2281                             SetLastError(ERROR_INVALID_DATA);
2282                             goto create_failed;
2283                         }
2284                         switch (attr_v) {
2285                             case WGL_TEXTURE_RGB_ARB:
2286                                 object->use_render_texture = GL_RGB;
2287                                 object->texture_bpp = 3;
2288                                 object->texture_format = GL_RGB;
2289                                 object->texture_type = GL_UNSIGNED_BYTE;
2290                                 break;
2291                             case WGL_TEXTURE_RGBA_ARB:
2292                                 object->use_render_texture = GL_RGBA;
2293                                 object->texture_bpp = 4;
2294                                 object->texture_format = GL_RGBA;
2295                                 object->texture_type = GL_UNSIGNED_BYTE;
2296                                 break;
2297
2298                             /* WGL_FLOAT_COMPONENTS_NV */
2299                             case WGL_TEXTURE_FLOAT_R_NV:
2300                                 object->use_render_texture = GL_FLOAT_R_NV;
2301                                 object->texture_bpp = 4;
2302                                 object->texture_format = GL_RED;
2303                                 object->texture_type = GL_FLOAT;
2304                                 break;
2305                             case WGL_TEXTURE_FLOAT_RG_NV:
2306                                 object->use_render_texture = GL_FLOAT_RG_NV;
2307                                 object->texture_bpp = 8;
2308                                 object->texture_format = GL_LUMINANCE_ALPHA;
2309                                 object->texture_type = GL_FLOAT;
2310                                 break;
2311                             case WGL_TEXTURE_FLOAT_RGB_NV:
2312                                 object->use_render_texture = GL_FLOAT_RGB_NV;
2313                                 object->texture_bpp = 12;
2314                                 object->texture_format = GL_RGB;
2315                                 object->texture_type = GL_FLOAT;
2316                                 break;
2317                             case WGL_TEXTURE_FLOAT_RGBA_NV:
2318                                 object->use_render_texture = GL_FLOAT_RGBA_NV;
2319                                 object->texture_bpp = 16;
2320                                 object->texture_format = GL_RGBA;
2321                                 object->texture_type = GL_FLOAT;
2322                                 break;
2323                             default:
2324                                 ERR("Unknown texture format: %x\n", attr_v);
2325                                 SetLastError(ERROR_INVALID_DATA);
2326                                 goto create_failed;
2327                         }
2328                     }
2329                 }
2330                 break;
2331             }
2332
2333             case WGL_TEXTURE_TARGET_ARB: {
2334                 ++piAttribList;
2335                 attr_v = *piAttribList;
2336                 TRACE("WGL_render_texture Attribute: WGL_TEXTURE_TARGET_ARB as %x\n", attr_v);
2337                 if (use_render_texture_ati) {
2338                     int type = 0;
2339                     switch (attr_v) {
2340                         case WGL_NO_TEXTURE_ARB: type = GLX_NO_TEXTURE_ATI; break ;
2341                         case WGL_TEXTURE_CUBE_MAP_ARB: type = GLX_TEXTURE_CUBE_MAP_ATI; break ;
2342                         case WGL_TEXTURE_1D_ARB: type = GLX_TEXTURE_1D_ATI; break ;
2343                         case WGL_TEXTURE_2D_ARB: type = GLX_TEXTURE_2D_ATI; break ;
2344                         default:
2345                             SetLastError(ERROR_INVALID_DATA);
2346                             goto create_failed;
2347                     }
2348                     PUSH2(attribs, GLX_TEXTURE_TARGET_ATI, type);
2349                 } else {
2350                     if (WGL_NO_TEXTURE_ARB == attr_v) {
2351                         object->texture_target = 0;
2352                     } else {
2353                         if (!use_render_texture_emulation) {
2354                             SetLastError(ERROR_INVALID_DATA);
2355                             goto create_failed;
2356                         }
2357                         switch (attr_v) {
2358                             case WGL_TEXTURE_CUBE_MAP_ARB: {
2359                                 if (iWidth != iHeight) {
2360                                     SetLastError(ERROR_INVALID_DATA);
2361                                     goto create_failed;
2362                                 }
2363                                 object->texture_target = GL_TEXTURE_CUBE_MAP;
2364                                 object->texture_bind_target = GL_TEXTURE_BINDING_CUBE_MAP;
2365                                break;
2366                             }
2367                             case WGL_TEXTURE_1D_ARB: {
2368                                 if (1 != iHeight) {
2369                                     SetLastError(ERROR_INVALID_DATA);
2370                                     goto create_failed;
2371                                 }
2372                                 object->texture_target = GL_TEXTURE_1D;
2373                                 object->texture_bind_target = GL_TEXTURE_BINDING_1D;
2374                                 break;
2375                             }
2376                             case WGL_TEXTURE_2D_ARB: {
2377                                 object->texture_target = GL_TEXTURE_2D;
2378                                 object->texture_bind_target = GL_TEXTURE_BINDING_2D;
2379                                 break;
2380                             }
2381                             case WGL_TEXTURE_RECTANGLE_NV: {
2382                                 object->texture_target = GL_TEXTURE_RECTANGLE_NV;
2383                                 object->texture_bind_target = GL_TEXTURE_BINDING_RECTANGLE_NV;
2384                                 break;
2385                             }
2386                             default:
2387                                 ERR("Unknown texture target: %x\n", attr_v);
2388                                 SetLastError(ERROR_INVALID_DATA);
2389                                 goto create_failed;
2390                         }
2391                     }
2392                 }
2393                 break;
2394             }
2395
2396             case WGL_MIPMAP_TEXTURE_ARB: {
2397                 ++piAttribList;
2398                 attr_v = *piAttribList;
2399                 TRACE("WGL_render_texture Attribute: WGL_MIPMAP_TEXTURE_ARB as %x\n", attr_v);
2400                 if (use_render_texture_ati) {
2401                     PUSH2(attribs, GLX_MIPMAP_TEXTURE_ATI, attr_v);
2402                 } else {
2403                     if (!use_render_texture_emulation) {
2404                         SetLastError(ERROR_INVALID_DATA);
2405                         goto create_failed;
2406                     }
2407                 }
2408                 break;
2409             }
2410         }
2411         ++piAttribList;
2412     }
2413
2414     PUSH1(attribs, None);
2415     wine_tsx11_lock();
2416     object->drawable = pglXCreatePbuffer(gdi_display, fmt->fbconfig, attribs);
2417     wine_tsx11_unlock();
2418     TRACE("new Pbuffer drawable as %p\n", (void*) object->drawable);
2419     if (!object->drawable) {
2420         SetLastError(ERROR_NO_SYSTEM_RESOURCES);
2421         goto create_failed; /* unexpected error */
2422     }
2423     TRACE("->(%p)\n", object);
2424     return object;
2425
2426 create_failed:
2427     HeapFree(GetProcessHeap(), 0, object);
2428     TRACE("->(FAILED)\n");
2429     return NULL;
2430 }
2431
2432 /**
2433  * X11DRV_wglDestroyPbufferARB
2434  *
2435  * WGL_ARB_pbuffer: wglDestroyPbufferARB
2436  */
2437 static GLboolean WINAPI X11DRV_wglDestroyPbufferARB(HPBUFFERARB hPbuffer)
2438 {
2439     Wine_GLPBuffer* object = hPbuffer;
2440     TRACE("(%p)\n", hPbuffer);
2441     if (NULL == object) {
2442         SetLastError(ERROR_INVALID_HANDLE);
2443         return GL_FALSE;
2444     }
2445     wine_tsx11_lock();
2446     pglXDestroyPbuffer(object->display, object->drawable);
2447     wine_tsx11_unlock();
2448     HeapFree(GetProcessHeap(), 0, object);
2449     return GL_TRUE;
2450 }
2451
2452 /**
2453  * X11DRV_wglGetPbufferDCARB
2454  *
2455  * WGL_ARB_pbuffer: wglGetPbufferDCARB
2456  * The function wglGetPbufferDCARB returns a device context for a pbuffer.
2457  * Gdi32 implements the part of this function which creates a device context.
2458  * This part associates the physDev with the X drawable of the pbuffer.
2459  */
2460 HDC CDECL X11DRV_wglGetPbufferDCARB(X11DRV_PDEVICE *physDev, HPBUFFERARB hPbuffer)
2461 {
2462     Wine_GLPBuffer* object = hPbuffer;
2463     if (NULL == object) {
2464         SetLastError(ERROR_INVALID_HANDLE);
2465         return NULL;
2466     }
2467
2468     /* The function wglGetPbufferDCARB returns a DC to which the pbuffer can be connected.
2469      * All formats in our pixelformat list are compatible with each other and the main drawable. */
2470     physDev->current_pf = object->fmt->iPixelFormat;
2471     physDev->drawable = object->drawable;
2472     SetRect( &physDev->drawable_rect, 0, 0, object->width, object->height );
2473     physDev->dc_rect = physDev->drawable_rect;
2474
2475     TRACE("(%p)->(%p)\n", hPbuffer, physDev->hdc);
2476     return physDev->hdc;
2477 }
2478
2479 /**
2480  * X11DRV_wglQueryPbufferARB
2481  *
2482  * WGL_ARB_pbuffer: wglQueryPbufferARB
2483  */
2484 static GLboolean WINAPI X11DRV_wglQueryPbufferARB(HPBUFFERARB hPbuffer, int iAttribute, int *piValue)
2485 {
2486     Wine_GLPBuffer* object = hPbuffer;
2487     TRACE("(%p, 0x%x, %p)\n", hPbuffer, iAttribute, piValue);
2488     if (NULL == object) {
2489         SetLastError(ERROR_INVALID_HANDLE);
2490         return GL_FALSE;
2491     }
2492     switch (iAttribute) {
2493         case WGL_PBUFFER_WIDTH_ARB:
2494             wine_tsx11_lock();
2495             pglXQueryDrawable(object->display, object->drawable, GLX_WIDTH, (unsigned int*) piValue);
2496             wine_tsx11_unlock();
2497             break;
2498         case WGL_PBUFFER_HEIGHT_ARB:
2499             wine_tsx11_lock();
2500             pglXQueryDrawable(object->display, object->drawable, GLX_HEIGHT, (unsigned int*) piValue);
2501             wine_tsx11_unlock();
2502             break;
2503
2504         case WGL_PBUFFER_LOST_ARB:
2505             /* GLX Pbuffers cannot be lost by default. We can support this by
2506              * setting GLX_PRESERVED_CONTENTS to False and using glXSelectEvent
2507              * to receive pixel buffer clobber events, however that may or may
2508              * not give any benefit */
2509             *piValue = GL_FALSE;
2510             break;
2511
2512         case WGL_TEXTURE_FORMAT_ARB:
2513             if (use_render_texture_ati) {
2514                 unsigned int tmp;
2515                 int type = WGL_NO_TEXTURE_ARB;
2516                 wine_tsx11_lock();
2517                 pglXQueryDrawable(object->display, object->drawable, GLX_TEXTURE_FORMAT_ATI, &tmp);
2518                 wine_tsx11_unlock();
2519                 switch (tmp) {
2520                     case GLX_NO_TEXTURE_ATI: type = WGL_NO_TEXTURE_ARB; break ;
2521                     case GLX_TEXTURE_RGB_ATI: type = WGL_TEXTURE_RGB_ARB; break ;
2522                     case GLX_TEXTURE_RGBA_ATI: type = WGL_TEXTURE_RGBA_ARB; break ;
2523                 }
2524                 *piValue = type;
2525             } else {
2526                 if (!object->use_render_texture) {
2527                     *piValue = WGL_NO_TEXTURE_ARB;
2528                 } else {
2529                     if (!use_render_texture_emulation) {
2530                         SetLastError(ERROR_INVALID_HANDLE);
2531                         return GL_FALSE;
2532                     }
2533                     switch(object->use_render_texture) {
2534                         case GL_RGB:
2535                             *piValue = WGL_TEXTURE_RGB_ARB;
2536                             break;
2537                         case GL_RGBA:
2538                             *piValue = WGL_TEXTURE_RGBA_ARB;
2539                             break;
2540                         /* WGL_FLOAT_COMPONENTS_NV */
2541                         case GL_FLOAT_R_NV:
2542                             *piValue = WGL_TEXTURE_FLOAT_R_NV;
2543                             break;
2544                         case GL_FLOAT_RG_NV:
2545                             *piValue = WGL_TEXTURE_FLOAT_RG_NV;
2546                             break;
2547                         case GL_FLOAT_RGB_NV:
2548                             *piValue = WGL_TEXTURE_FLOAT_RGB_NV;
2549                             break;
2550                         case GL_FLOAT_RGBA_NV:
2551                             *piValue = WGL_TEXTURE_FLOAT_RGBA_NV;
2552                             break;
2553                         default:
2554                             ERR("Unknown texture format: %x\n", object->use_render_texture);
2555                     }
2556                 }
2557             }
2558             break;
2559
2560         case WGL_TEXTURE_TARGET_ARB:
2561             if (use_render_texture_ati) {
2562                 unsigned int tmp;
2563                 int type = WGL_NO_TEXTURE_ARB;
2564                 wine_tsx11_lock();
2565                 pglXQueryDrawable(object->display, object->drawable, GLX_TEXTURE_TARGET_ATI, &tmp);
2566                 wine_tsx11_unlock();
2567                 switch (tmp) {
2568                     case GLX_NO_TEXTURE_ATI: type = WGL_NO_TEXTURE_ARB; break ;
2569                     case GLX_TEXTURE_CUBE_MAP_ATI: type = WGL_TEXTURE_CUBE_MAP_ARB; break ;
2570                     case GLX_TEXTURE_1D_ATI: type = WGL_TEXTURE_1D_ARB; break ;
2571                     case GLX_TEXTURE_2D_ATI: type = WGL_TEXTURE_2D_ARB; break ;
2572                 }
2573                 *piValue = type;
2574             } else {
2575             if (!object->texture_target) {
2576                 *piValue = WGL_NO_TEXTURE_ARB;
2577             } else {
2578                 if (!use_render_texture_emulation) {
2579                     SetLastError(ERROR_INVALID_DATA);
2580                     return GL_FALSE;
2581                 }
2582                 switch (object->texture_target) {
2583                     case GL_TEXTURE_1D:       *piValue = WGL_TEXTURE_1D_ARB; break;
2584                     case GL_TEXTURE_2D:       *piValue = WGL_TEXTURE_2D_ARB; break;
2585                     case GL_TEXTURE_CUBE_MAP: *piValue = WGL_TEXTURE_CUBE_MAP_ARB; break;
2586                     case GL_TEXTURE_RECTANGLE_NV: *piValue = WGL_TEXTURE_RECTANGLE_NV; break;
2587                 }
2588             }
2589         }
2590         break;
2591
2592     case WGL_MIPMAP_TEXTURE_ARB:
2593         if (use_render_texture_ati) {
2594             wine_tsx11_lock();
2595             pglXQueryDrawable(object->display, object->drawable, GLX_MIPMAP_TEXTURE_ATI, (unsigned int*) piValue);
2596             wine_tsx11_unlock();
2597         } else {
2598             *piValue = GL_FALSE; /** don't support that */
2599             FIXME("unsupported WGL_ARB_render_texture attribute query for 0x%x\n", iAttribute);
2600         }
2601         break;
2602
2603     default:
2604         FIXME("unexpected attribute %x\n", iAttribute);
2605         break;
2606     }
2607
2608     return GL_TRUE;
2609 }
2610
2611 /**
2612  * X11DRV_wglReleasePbufferDCARB
2613  *
2614  * WGL_ARB_pbuffer: wglReleasePbufferDCARB
2615  */
2616 static int WINAPI X11DRV_wglReleasePbufferDCARB(HPBUFFERARB hPbuffer, HDC hdc)
2617 {
2618     TRACE("(%p, %p)\n", hPbuffer, hdc);
2619     return DeleteDC(hdc);
2620 }
2621
2622 /**
2623  * X11DRV_wglSetPbufferAttribARB
2624  *
2625  * WGL_ARB_pbuffer: wglSetPbufferAttribARB
2626  */
2627 static GLboolean WINAPI X11DRV_wglSetPbufferAttribARB(HPBUFFERARB hPbuffer, const int *piAttribList)
2628 {
2629     Wine_GLPBuffer* object = hPbuffer;
2630     GLboolean ret = GL_FALSE;
2631
2632     WARN("(%p, %p): alpha-testing, report any problem\n", hPbuffer, piAttribList);
2633     if (NULL == object) {
2634         SetLastError(ERROR_INVALID_HANDLE);
2635         return GL_FALSE;
2636     }
2637     if (!object->use_render_texture) {
2638         SetLastError(ERROR_INVALID_HANDLE);
2639         return GL_FALSE;
2640     }
2641     if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
2642         return GL_TRUE;
2643     }
2644     if (NULL != pglXDrawableAttribATI) {
2645         if (use_render_texture_ati) {
2646             FIXME("Need conversion for GLX_ATI_render_texture\n");
2647         }
2648         wine_tsx11_lock();
2649         ret = pglXDrawableAttribATI(object->display, object->drawable, piAttribList);
2650         wine_tsx11_unlock();
2651     }
2652     return ret;
2653 }
2654
2655 /**
2656  * X11DRV_wglChoosePixelFormatARB
2657  *
2658  * WGL_ARB_pixel_format: wglChoosePixelFormatARB
2659  */
2660 static GLboolean WINAPI X11DRV_wglChoosePixelFormatARB(HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats)
2661 {
2662     int gl_test = 0;
2663     int attribs[256];
2664     int nAttribs = 0;
2665     GLXFBConfig* cfgs = NULL;
2666     int nCfgs = 0;
2667     int it;
2668     int fmt_id;
2669     WineGLPixelFormat *fmt;
2670     UINT pfmt_it = 0;
2671     int run;
2672     int i;
2673     DWORD dwFlags = 0;
2674
2675     TRACE("(%p, %p, %p, %d, %p, %p): hackish\n", hdc, piAttribIList, pfAttribFList, nMaxFormats, piFormats, nNumFormats);
2676     if (NULL != pfAttribFList) {
2677         FIXME("unused pfAttribFList\n");
2678     }
2679
2680     nAttribs = ConvertAttribWGLtoGLX(piAttribIList, attribs, NULL);
2681     if (-1 == nAttribs) {
2682         WARN("Cannot convert WGL to GLX attributes\n");
2683         return GL_FALSE;
2684     }
2685     PUSH1(attribs, None);
2686
2687     /* There is no 1:1 mapping between GLX and WGL formats because we duplicate some GLX formats for bitmap rendering (see get_formats).
2688      * Flags like PFD_SUPPORT_GDI, PFD_DRAW_TO_BITMAP and others are a property of the WineGLPixelFormat. We don't query these attributes
2689      * using glXChooseFBConfig but we filter the result of glXChooseFBConfig later on by passing a dwFlags to 'ConvertPixelFormatGLXtoWGL'. */
2690     for(i=0; piAttribIList[i] != 0; i+=2)
2691     {
2692         switch(piAttribIList[i])
2693         {
2694             case WGL_DRAW_TO_BITMAP_ARB:
2695                 if(piAttribIList[i+1])
2696                     dwFlags |= PFD_DRAW_TO_BITMAP;
2697                 break;
2698             case WGL_ACCELERATION_ARB:
2699                 switch(piAttribIList[i+1])
2700                 {
2701                     case WGL_NO_ACCELERATION_ARB:
2702                         dwFlags |= PFD_GENERIC_FORMAT;
2703                         break;
2704                     case WGL_GENERIC_ACCELERATION_ARB:
2705                         dwFlags |= PFD_GENERIC_ACCELERATED;
2706                         break;
2707                     case WGL_FULL_ACCELERATION_ARB:
2708                         /* Nothing to do */
2709                         break;
2710                 }
2711                 break;
2712             case WGL_SUPPORT_GDI_ARB:
2713                 if(piAttribIList[i+1])
2714                     dwFlags |= PFD_SUPPORT_GDI;
2715                 break;
2716         }
2717     }
2718
2719     /* Search for FB configurations matching the requirements in attribs */
2720     wine_tsx11_lock();
2721     cfgs = pglXChooseFBConfig(gdi_display, DefaultScreen(gdi_display), attribs, &nCfgs);
2722     if (NULL == cfgs) {
2723         wine_tsx11_unlock();
2724         WARN("Compatible Pixel Format not found\n");
2725         return GL_FALSE;
2726     }
2727
2728     /* Loop through all matching formats and check if they are suitable.
2729     * Note that this function should at max return nMaxFormats different formats */
2730     for(run=0; run < 2; run++)
2731     {
2732         for (it = 0; it < nCfgs; ++it) {
2733             gl_test = pglXGetFBConfigAttrib(gdi_display, cfgs[it], GLX_FBCONFIG_ID, &fmt_id);
2734             if (gl_test) {
2735                 ERR("Failed to retrieve FBCONFIG_ID from GLXFBConfig, expect problems.\n");
2736                 continue;
2737             }
2738
2739             /* Search for the format in our list of compatible formats */
2740             fmt = ConvertPixelFormatGLXtoWGL(gdi_display, fmt_id, dwFlags);
2741             if(!fmt)
2742                 continue;
2743
2744             /* During the first run we only want onscreen formats and during the second only offscreen 'XOR' */
2745             if( ((run == 0) && fmt->offscreenOnly) || ((run == 1) && !fmt->offscreenOnly) )
2746                 continue;
2747
2748             if(pfmt_it < nMaxFormats) {
2749                 piFormats[pfmt_it] = fmt->iPixelFormat;
2750                 TRACE("at %d/%d found FBCONFIG_ID 0x%x (%d)\n", it + 1, nCfgs, fmt_id, piFormats[pfmt_it]);
2751             }
2752             pfmt_it++;
2753         }
2754     }
2755
2756     *nNumFormats = pfmt_it;
2757     /** free list */
2758     XFree(cfgs);
2759     wine_tsx11_unlock();
2760     return GL_TRUE;
2761 }
2762
2763 /**
2764  * X11DRV_wglGetPixelFormatAttribivARB
2765  *
2766  * WGL_ARB_pixel_format: wglGetPixelFormatAttribivARB
2767  */
2768 static GLboolean WINAPI X11DRV_wglGetPixelFormatAttribivARB(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues)
2769 {
2770     UINT i;
2771     WineGLPixelFormat *fmt = NULL;
2772     int hTest;
2773     int tmp;
2774     int curGLXAttr = 0;
2775     int nWGLFormats = 0;
2776
2777     TRACE("(%p, %d, %d, %d, %p, %p)\n", hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, piValues);
2778
2779     if (0 < iLayerPlane) {
2780         FIXME("unsupported iLayerPlane(%d) > 0, returns FALSE\n", iLayerPlane);
2781         return GL_FALSE;
2782     }
2783
2784     /* Convert the WGL pixelformat to a GLX one, if this fails then most likely the iPixelFormat isn't supported.
2785     * We don't have to fail yet as a program can specify an invalid iPixelFormat (lets say 0) if it wants to query
2786     * the number of supported WGL formats. Whether the iPixelFormat is valid is handled in the for-loop below. */
2787     fmt = ConvertPixelFormatWGLtoGLX(gdi_display, iPixelFormat, TRUE /* Offscreen */, &nWGLFormats);
2788     if(!fmt) {
2789         WARN("Unable to convert iPixelFormat %d to a GLX one!\n", iPixelFormat);
2790     }
2791
2792     wine_tsx11_lock();
2793     for (i = 0; i < nAttributes; ++i) {
2794         const int curWGLAttr = piAttributes[i];
2795         TRACE("pAttr[%d] = %x\n", i, curWGLAttr);
2796
2797         switch (curWGLAttr) {
2798             case WGL_NUMBER_PIXEL_FORMATS_ARB:
2799                 piValues[i] = nWGLFormats;
2800                 continue;
2801
2802             case WGL_SUPPORT_OPENGL_ARB:
2803                 piValues[i] = GL_TRUE;
2804                 continue;
2805
2806             case WGL_ACCELERATION_ARB:
2807                 curGLXAttr = GLX_CONFIG_CAVEAT;
2808                 if (!fmt) goto pix_error;
2809                 if(fmt->dwFlags & PFD_GENERIC_FORMAT)
2810                     piValues[i] = WGL_NO_ACCELERATION_ARB;
2811                 else if(fmt->dwFlags & PFD_GENERIC_ACCELERATED)
2812                     piValues[i] = WGL_GENERIC_ACCELERATION_ARB;
2813                 else
2814                     piValues[i] = WGL_FULL_ACCELERATION_ARB;
2815                 continue;
2816
2817             case WGL_TRANSPARENT_ARB:
2818                 curGLXAttr = GLX_TRANSPARENT_TYPE;
2819                 if (!fmt) goto pix_error;
2820                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, &tmp);
2821                 if (hTest) goto get_error;
2822                     piValues[i] = GL_FALSE;
2823                 if (GLX_NONE != tmp) piValues[i] = GL_TRUE;
2824                     continue;
2825
2826             case WGL_PIXEL_TYPE_ARB:
2827                 curGLXAttr = GLX_RENDER_TYPE;
2828                 if (!fmt) goto pix_error;
2829                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, &tmp);
2830                 if (hTest) goto get_error;
2831                 TRACE("WGL_PIXEL_TYPE_ARB: GLX_RENDER_TYPE = 0x%x\n", tmp);
2832                 if      (tmp & GLX_RGBA_BIT)           { piValues[i] = WGL_TYPE_RGBA_ARB; }
2833                 else if (tmp & GLX_COLOR_INDEX_BIT)    { piValues[i] = WGL_TYPE_COLORINDEX_ARB; }
2834                 else if (tmp & GLX_RGBA_FLOAT_BIT)     { piValues[i] = WGL_TYPE_RGBA_FLOAT_ATI; }
2835                 else if (tmp & GLX_RGBA_FLOAT_ATI_BIT) { piValues[i] = WGL_TYPE_RGBA_FLOAT_ATI; }
2836                 else if (tmp & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) { piValues[i] = WGL_TYPE_RGBA_UNSIGNED_FLOAT_EXT; }
2837                 else {
2838                     ERR("unexpected RenderType(%x)\n", tmp);
2839                     piValues[i] = WGL_TYPE_RGBA_ARB;
2840                 }
2841                 continue;
2842
2843             case WGL_COLOR_BITS_ARB:
2844                 curGLXAttr = GLX_BUFFER_SIZE;
2845                 break;
2846
2847             case WGL_BIND_TO_TEXTURE_RGB_ARB:
2848                 if (use_render_texture_ati) {
2849                     curGLXAttr = GLX_BIND_TO_TEXTURE_RGB_ATI;
2850                     break;
2851                 }
2852             case WGL_BIND_TO_TEXTURE_RGBA_ARB:
2853                 if (use_render_texture_ati) {
2854                     curGLXAttr = GLX_BIND_TO_TEXTURE_RGBA_ATI;
2855                     break;
2856                 }
2857                 if (!use_render_texture_emulation) {
2858                     piValues[i] = GL_FALSE;
2859                     continue;
2860                 }
2861                 curGLXAttr = GLX_RENDER_TYPE;
2862                 if (!fmt) goto pix_error;
2863                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, &tmp);
2864                 if (hTest) goto get_error;
2865                 if (GLX_COLOR_INDEX_BIT == tmp) {
2866                     piValues[i] = GL_FALSE;
2867                     continue;
2868                 }
2869                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DRAWABLE_TYPE, &tmp);
2870                 if (hTest) goto get_error;
2871                 piValues[i] = (tmp & GLX_PBUFFER_BIT) ? GL_TRUE : GL_FALSE;
2872                 continue;
2873
2874             case WGL_BLUE_BITS_ARB:
2875                 curGLXAttr = GLX_BLUE_SIZE;
2876                 break;
2877             case WGL_RED_BITS_ARB:
2878                 curGLXAttr = GLX_RED_SIZE;
2879                 break;
2880             case WGL_GREEN_BITS_ARB:
2881                 curGLXAttr = GLX_GREEN_SIZE;
2882                 break;
2883             case WGL_ALPHA_BITS_ARB:
2884                 curGLXAttr = GLX_ALPHA_SIZE;
2885                 break;
2886             case WGL_DEPTH_BITS_ARB:
2887                 curGLXAttr = GLX_DEPTH_SIZE;
2888                 break;
2889             case WGL_STENCIL_BITS_ARB:
2890                 curGLXAttr = GLX_STENCIL_SIZE;
2891                 break;
2892             case WGL_DOUBLE_BUFFER_ARB:
2893                 curGLXAttr = GLX_DOUBLEBUFFER;
2894                 break;
2895             case WGL_STEREO_ARB:
2896                 curGLXAttr = GLX_STEREO;
2897                 break;
2898             case WGL_AUX_BUFFERS_ARB:
2899                 curGLXAttr = GLX_AUX_BUFFERS;
2900                 break;
2901
2902             case WGL_SUPPORT_GDI_ARB:
2903                 if (!fmt) goto pix_error;
2904                 piValues[i] = (fmt->dwFlags & PFD_SUPPORT_GDI) ? TRUE : FALSE;
2905                 continue;
2906
2907             case WGL_DRAW_TO_BITMAP_ARB:
2908                 if (!fmt) goto pix_error;
2909                 piValues[i] = (fmt->dwFlags & PFD_DRAW_TO_BITMAP) ? TRUE : FALSE;
2910                 continue;
2911
2912             case WGL_DRAW_TO_WINDOW_ARB:
2913             case WGL_DRAW_TO_PBUFFER_ARB:
2914                 if (!fmt) goto pix_error;
2915                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DRAWABLE_TYPE, &tmp);
2916                 if (hTest) goto get_error;
2917                 if((curWGLAttr == WGL_DRAW_TO_WINDOW_ARB && (tmp&GLX_WINDOW_BIT)) ||
2918                    (curWGLAttr == WGL_DRAW_TO_PBUFFER_ARB && (tmp&GLX_PBUFFER_BIT)))
2919                     piValues[i] = GL_TRUE;
2920                 else
2921                     piValues[i] = GL_FALSE;
2922                 continue;
2923
2924             case WGL_SWAP_METHOD_ARB:
2925                 /* For now return SWAP_EXCHANGE_ARB which is the best type of buffer switch available.
2926                  * Later on we can also use GLX_OML_swap_method on drivers which support this. At this
2927                  * point only ATI offers this.
2928                  */
2929                 piValues[i] = WGL_SWAP_EXCHANGE_ARB;
2930                 break;
2931
2932             case WGL_PBUFFER_LARGEST_ARB:
2933                 curGLXAttr = GLX_LARGEST_PBUFFER;
2934                 break;
2935
2936             case WGL_SAMPLE_BUFFERS_ARB:
2937                 curGLXAttr = GLX_SAMPLE_BUFFERS_ARB;
2938                 break;
2939
2940             case WGL_SAMPLES_ARB:
2941                 curGLXAttr = GLX_SAMPLES_ARB;
2942                 break;
2943
2944             case WGL_FLOAT_COMPONENTS_NV:
2945                 curGLXAttr = GLX_FLOAT_COMPONENTS_NV;
2946                 break;
2947
2948             case WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT:
2949                 curGLXAttr = GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT;
2950                 break;
2951
2952             case WGL_TYPE_RGBA_UNSIGNED_FLOAT_EXT:
2953                 curGLXAttr = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
2954                 break;
2955
2956             case WGL_ACCUM_RED_BITS_ARB:
2957                 curGLXAttr = GLX_ACCUM_RED_SIZE;
2958                 break;
2959             case WGL_ACCUM_GREEN_BITS_ARB:
2960                 curGLXAttr = GLX_ACCUM_GREEN_SIZE;
2961                 break;
2962             case WGL_ACCUM_BLUE_BITS_ARB:
2963                 curGLXAttr = GLX_ACCUM_BLUE_SIZE;
2964                 break;
2965             case WGL_ACCUM_ALPHA_BITS_ARB:
2966                 curGLXAttr = GLX_ACCUM_ALPHA_SIZE;
2967                 break;
2968             case WGL_ACCUM_BITS_ARB:
2969                 if (!fmt) goto pix_error;
2970                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_RED_SIZE, &tmp);
2971                 if (hTest) goto get_error;
2972                 piValues[i] = tmp;
2973                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_GREEN_SIZE, &tmp);
2974                 if (hTest) goto get_error;
2975                 piValues[i] += tmp;
2976                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_BLUE_SIZE, &tmp);
2977                 if (hTest) goto get_error;
2978                 piValues[i] += tmp;
2979                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_ALPHA_SIZE, &tmp);
2980                 if (hTest) goto get_error;
2981                 piValues[i] += tmp;
2982                 continue;
2983
2984             default:
2985                 FIXME("unsupported %x WGL Attribute\n", curWGLAttr);
2986         }
2987
2988         /* Retrieve a GLX FBConfigAttrib when the attribute to query is valid and
2989          * iPixelFormat != 0. When iPixelFormat is 0 the only value which makes
2990          * sense to query is WGL_NUMBER_PIXEL_FORMATS_ARB.
2991          *
2992          * TODO: properly test the behavior of wglGetPixelFormatAttrib*v on Windows
2993          *       and check which options can work using iPixelFormat=0 and which not.
2994          *       A problem would be that this function is an extension. This would
2995          *       mean that the behavior could differ between different vendors (ATI, Nvidia, ..).
2996          */
2997         if (0 != curGLXAttr && iPixelFormat != 0) {
2998             if (!fmt) goto pix_error;
2999             hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, piValues + i);
3000             if (hTest) goto get_error;
3001             curGLXAttr = 0;
3002         } else {
3003             piValues[i] = GL_FALSE;
3004         }
3005     }
3006     wine_tsx11_unlock();
3007     return GL_TRUE;
3008
3009 get_error:
3010     wine_tsx11_unlock();
3011     ERR("(%p): unexpected failure on GetFBConfigAttrib(%x) returns FALSE\n", hdc, curGLXAttr);
3012     return GL_FALSE;
3013
3014 pix_error:
3015     wine_tsx11_unlock();
3016     ERR("(%p): unexpected iPixelFormat(%d) vs nFormats(%d), returns FALSE\n", hdc, iPixelFormat, nWGLFormats);
3017     return GL_FALSE;
3018 }
3019
3020 /**
3021  * X11DRV_wglGetPixelFormatAttribfvARB
3022  *
3023  * WGL_ARB_pixel_format: wglGetPixelFormatAttribfvARB
3024  */
3025 static GLboolean WINAPI X11DRV_wglGetPixelFormatAttribfvARB(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues)
3026 {
3027     int *attr;
3028     int ret;
3029     UINT i;
3030
3031     TRACE("(%p, %d, %d, %d, %p, %p)\n", hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, pfValues);
3032
3033     /* Allocate a temporary array to store integer values */
3034     attr = HeapAlloc(GetProcessHeap(), 0, nAttributes * sizeof(int));
3035     if (!attr) {
3036         ERR("couldn't allocate %d array\n", nAttributes);
3037         return GL_FALSE;
3038     }
3039
3040     /* Piggy-back on wglGetPixelFormatAttribivARB */
3041     ret = X11DRV_wglGetPixelFormatAttribivARB(hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, attr);
3042     if (ret) {
3043         /* Convert integer values to float. Should also check for attributes
3044            that can give decimal values here */
3045         for (i=0; i<nAttributes;i++) {
3046             pfValues[i] = attr[i];
3047         }
3048     }
3049
3050     HeapFree(GetProcessHeap(), 0, attr);
3051     return ret;
3052 }
3053
3054 /**
3055  * X11DRV_wglBindTexImageARB
3056  *
3057  * WGL_ARB_render_texture: wglBindTexImageARB
3058  */
3059 static GLboolean WINAPI X11DRV_wglBindTexImageARB(HPBUFFERARB hPbuffer, int iBuffer)
3060 {
3061     Wine_GLPBuffer* object = hPbuffer;
3062     GLboolean ret = GL_FALSE;
3063
3064     TRACE("(%p, %d)\n", hPbuffer, iBuffer);
3065     if (NULL == object) {
3066         SetLastError(ERROR_INVALID_HANDLE);
3067         return GL_FALSE;
3068     }
3069     if (!object->use_render_texture) {
3070         SetLastError(ERROR_INVALID_HANDLE);
3071         return GL_FALSE;
3072     }
3073
3074     if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
3075         static int init = 0;
3076         int prev_binded_texture = 0;
3077         GLXContext prev_context;
3078         Drawable prev_drawable;
3079         GLXContext tmp_context;
3080
3081         wine_tsx11_lock();
3082         prev_context = pglXGetCurrentContext();
3083         prev_drawable = pglXGetCurrentDrawable();
3084
3085         /* Our render_texture emulation is basic and lacks some features (1D/Cube support).
3086            This is mostly due to lack of demos/games using them. Further the use of glReadPixels
3087            isn't ideal performance wise but I wasn't able to get other ways working.
3088         */
3089         if(!init) {
3090             init = 1; /* Only show the FIXME once for performance reasons */
3091             FIXME("partial stub!\n");
3092         }
3093
3094         TRACE("drawable=%p, context=%p\n", (void*)object->drawable, prev_context);
3095         tmp_context = pglXCreateNewContext(gdi_display, object->fmt->fbconfig, object->fmt->render_type, prev_context, True);
3096
3097         pglGetIntegerv(object->texture_bind_target, &prev_binded_texture);
3098
3099         /* Switch to our pbuffer */
3100         pglXMakeCurrent(gdi_display, object->drawable, tmp_context);
3101
3102         /* Make sure that the prev_binded_texture is set as the current texture state isn't shared between contexts.
3103          * After that upload the pbuffer texture data. */
3104         pglBindTexture(object->texture_target, prev_binded_texture);
3105         pglCopyTexImage2D(object->texture_target, 0, object->use_render_texture, 0, 0, object->width, object->height, 0);
3106
3107         /* Switch back to the original drawable and upload the pbuffer-texture */
3108         pglXMakeCurrent(object->display, prev_drawable, prev_context);
3109         pglXDestroyContext(gdi_display, tmp_context);
3110         wine_tsx11_unlock();
3111         return GL_TRUE;
3112     }
3113
3114     if (NULL != pglXBindTexImageATI) {
3115         int buffer;
3116
3117         switch(iBuffer)
3118         {
3119             case WGL_FRONT_LEFT_ARB:
3120                 buffer = GLX_FRONT_LEFT_ATI;
3121                 break;
3122             case WGL_FRONT_RIGHT_ARB:
3123                 buffer = GLX_FRONT_RIGHT_ATI;
3124                 break;
3125             case WGL_BACK_LEFT_ARB:
3126                 buffer = GLX_BACK_LEFT_ATI;
3127                 break;
3128             case WGL_BACK_RIGHT_ARB:
3129                 buffer = GLX_BACK_RIGHT_ATI;
3130                 break;
3131             default:
3132                 ERR("Unknown iBuffer=%#x\n", iBuffer);
3133                 return FALSE;
3134         }
3135
3136         /* In the sample 'ogl_offscreen_rendering_3' from codesampler.net I get garbage on the screen.
3137          * I'm not sure if that's a bug in the ATI extension or in the program. I think that the program
3138          * expected a single buffering format since it didn't ask for double buffering. A buffer swap
3139          * fixed the program. I don't know what the correct behavior is. On the other hand that demo
3140          * works fine using our pbuffer emulation path.
3141          */
3142         wine_tsx11_lock();
3143         ret = pglXBindTexImageATI(object->display, object->drawable, buffer);
3144         wine_tsx11_unlock();
3145     }
3146     return ret;
3147 }
3148
3149 /**
3150  * X11DRV_wglReleaseTexImageARB
3151  *
3152  * WGL_ARB_render_texture: wglReleaseTexImageARB
3153  */
3154 static GLboolean WINAPI X11DRV_wglReleaseTexImageARB(HPBUFFERARB hPbuffer, int iBuffer)
3155 {
3156     Wine_GLPBuffer* object = hPbuffer;
3157     GLboolean ret = GL_FALSE;
3158
3159     TRACE("(%p, %d)\n", hPbuffer, iBuffer);
3160     if (NULL == object) {
3161         SetLastError(ERROR_INVALID_HANDLE);
3162         return GL_FALSE;
3163     }
3164     if (!object->use_render_texture) {
3165         SetLastError(ERROR_INVALID_HANDLE);
3166         return GL_FALSE;
3167     }
3168     if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
3169         return GL_TRUE;
3170     }
3171     if (NULL != pglXReleaseTexImageATI) {
3172         int buffer;
3173
3174         switch(iBuffer)
3175         {
3176             case WGL_FRONT_LEFT_ARB:
3177                 buffer = GLX_FRONT_LEFT_ATI;
3178                 break;
3179             case WGL_FRONT_RIGHT_ARB:
3180                 buffer = GLX_FRONT_RIGHT_ATI;
3181                 break;
3182             case WGL_BACK_LEFT_ARB:
3183                 buffer = GLX_BACK_LEFT_ATI;
3184                 break;
3185             case WGL_BACK_RIGHT_ARB:
3186                 buffer = GLX_BACK_RIGHT_ATI;
3187                 break;
3188             default:
3189                 ERR("Unknown iBuffer=%#x\n", iBuffer);
3190                 return FALSE;
3191         }
3192         wine_tsx11_lock();
3193         ret = pglXReleaseTexImageATI(object->display, object->drawable, buffer);
3194         wine_tsx11_unlock();
3195     }
3196     return ret;
3197 }
3198
3199 /**
3200  * X11DRV_wglGetExtensionsStringEXT
3201  *
3202  * WGL_EXT_extensions_string: wglGetExtensionsStringEXT
3203  */
3204 static const char * WINAPI X11DRV_wglGetExtensionsStringEXT(void) {
3205     TRACE("() returning \"%s\"\n", WineGLInfo.wglExtensions);
3206     return WineGLInfo.wglExtensions;
3207 }
3208
3209 /**
3210  * X11DRV_wglGetSwapIntervalEXT
3211  *
3212  * WGL_EXT_swap_control: wglGetSwapIntervalEXT
3213  */
3214 static int WINAPI X11DRV_wglGetSwapIntervalEXT(VOID) {
3215     FIXME("(),stub!\n");
3216     return swap_interval;
3217 }
3218
3219 /**
3220  * X11DRV_wglSwapIntervalEXT
3221  *
3222  * WGL_EXT_swap_control: wglSwapIntervalEXT
3223  */
3224 static BOOL WINAPI X11DRV_wglSwapIntervalEXT(int interval) {
3225     BOOL ret = TRUE;
3226
3227     TRACE("(%d)\n", interval);
3228     swap_interval = interval;
3229     if (NULL != pglXSwapIntervalSGI) {
3230         wine_tsx11_lock();
3231         ret = !pglXSwapIntervalSGI(interval);
3232         wine_tsx11_unlock();
3233     }
3234     else WARN("(): GLX_SGI_swap_control extension seems not supported\n");
3235     return ret;
3236 }
3237
3238 /**
3239  * X11DRV_wglAllocateMemoryNV
3240  *
3241  * WGL_NV_vertex_array_range: wglAllocateMemoryNV
3242  */
3243 static void* WINAPI X11DRV_wglAllocateMemoryNV(GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority) {
3244     void *ret = NULL;
3245     TRACE("(%d, %f, %f, %f)\n", size, readfreq, writefreq, priority );
3246
3247     if (pglXAllocateMemoryNV)
3248     {
3249         wine_tsx11_lock();
3250         ret = pglXAllocateMemoryNV(size, readfreq, writefreq, priority);
3251         wine_tsx11_unlock();
3252     }
3253     return ret;
3254 }
3255
3256 /**
3257  * X11DRV_wglFreeMemoryNV
3258  *
3259  * WGL_NV_vertex_array_range: wglFreeMemoryNV
3260  */
3261 static void WINAPI X11DRV_wglFreeMemoryNV(GLvoid* pointer) {
3262     TRACE("(%p)\n", pointer);
3263     if (pglXFreeMemoryNV == NULL)
3264         return;
3265
3266     wine_tsx11_lock();
3267     pglXFreeMemoryNV(pointer);
3268     wine_tsx11_unlock();
3269 }
3270
3271 /**
3272  * X11DRV_wglSetPixelFormatWINE
3273  *
3274  * WGL_WINE_pixel_format_passthrough: wglSetPixelFormatWINE
3275  * This is a WINE-specific wglSetPixelFormat which can set the pixel format multiple times.
3276  */
3277 BOOL CDECL X11DRV_wglSetPixelFormatWINE(X11DRV_PDEVICE *physDev, int iPixelFormat, const PIXELFORMATDESCRIPTOR *ppfd)
3278 {
3279     TRACE("(%p,%d,%p)\n", physDev, iPixelFormat, ppfd);
3280
3281     if (!has_opengl()) return FALSE;
3282
3283     if (physDev->current_pf == iPixelFormat) return TRUE;
3284
3285     /* Relay to the core SetPixelFormat */
3286     TRACE("Changing iPixelFormat from %d to %d\n", physDev->current_pf, iPixelFormat);
3287     return internal_SetPixelFormat(physDev, iPixelFormat, ppfd);
3288 }
3289
3290 /**
3291  * glxRequireVersion (internal)
3292  *
3293  * Check if the supported GLX version matches requiredVersion.
3294  */
3295 static BOOL glxRequireVersion(int requiredVersion)
3296 {
3297     /* Both requiredVersion and glXVersion[1] contains the minor GLX version */
3298     if(requiredVersion <= WineGLInfo.glxVersion[1])
3299         return TRUE;
3300
3301     return FALSE;
3302 }
3303
3304 static BOOL glxRequireExtension(const char *requiredExtension)
3305 {
3306     if (strstr(WineGLInfo.glxExtensions, requiredExtension) == NULL) {
3307         return FALSE;
3308     }
3309
3310     return TRUE;
3311 }
3312
3313 static void register_extension_string(const char *ext)
3314 {
3315     if (WineGLInfo.wglExtensions[0])
3316         strcat(WineGLInfo.wglExtensions, " ");
3317     strcat(WineGLInfo.wglExtensions, ext);
3318
3319     TRACE("'%s'\n", ext);
3320 }
3321
3322 static BOOL register_extension(const WineGLExtension * ext)
3323 {
3324     int i;
3325
3326     assert( WineGLExtensionListSize < MAX_EXTENSIONS );
3327     WineGLExtensionList[WineGLExtensionListSize++] = ext;
3328
3329     register_extension_string(ext->extName);
3330
3331     for (i = 0; ext->extEntryPoints[i].funcName; ++i)
3332         TRACE("    - '%s'\n", ext->extEntryPoints[i].funcName);
3333
3334     return TRUE;
3335 }
3336
3337 static const WineGLExtension WGL_internal_functions =
3338 {
3339   "",
3340   {
3341     { "wglGetIntegerv", X11DRV_wglGetIntegerv },
3342     { "wglFinish", X11DRV_wglFinish },
3343     { "wglFlush", X11DRV_wglFlush },
3344   }
3345 };
3346
3347
3348 static const WineGLExtension WGL_ARB_extensions_string =
3349 {
3350   "WGL_ARB_extensions_string",
3351   {
3352     { "wglGetExtensionsStringARB", X11DRV_wglGetExtensionsStringARB },
3353   }
3354 };
3355
3356 static const WineGLExtension WGL_ARB_make_current_read =
3357 {
3358   "WGL_ARB_make_current_read",
3359   {
3360     { "wglGetCurrentReadDCARB", X11DRV_wglGetCurrentReadDCARB },
3361     { "wglMakeContextCurrentARB", X11DRV_wglMakeContextCurrentARB },
3362   }
3363 };
3364
3365 static const WineGLExtension WGL_ARB_multisample =
3366 {
3367   "WGL_ARB_multisample",
3368 };
3369
3370 static const WineGLExtension WGL_ARB_pbuffer =
3371 {
3372   "WGL_ARB_pbuffer",
3373   {
3374     { "wglCreatePbufferARB", X11DRV_wglCreatePbufferARB },
3375     { "wglDestroyPbufferARB", X11DRV_wglDestroyPbufferARB },
3376     { "wglGetPbufferDCARB", X11DRV_wglGetPbufferDCARB },
3377     { "wglQueryPbufferARB", X11DRV_wglQueryPbufferARB },
3378     { "wglReleasePbufferDCARB", X11DRV_wglReleasePbufferDCARB },
3379     { "wglSetPbufferAttribARB", X11DRV_wglSetPbufferAttribARB },
3380   }
3381 };
3382
3383 static const WineGLExtension WGL_ARB_pixel_format =
3384 {
3385   "WGL_ARB_pixel_format",
3386   {
3387     { "wglChoosePixelFormatARB", X11DRV_wglChoosePixelFormatARB },
3388     { "wglGetPixelFormatAttribfvARB", X11DRV_wglGetPixelFormatAttribfvARB },
3389     { "wglGetPixelFormatAttribivARB", X11DRV_wglGetPixelFormatAttribivARB },
3390   }
3391 };
3392
3393 static const WineGLExtension WGL_ARB_render_texture =
3394 {
3395   "WGL_ARB_render_texture",
3396   {
3397     { "wglBindTexImageARB", X11DRV_wglBindTexImageARB },
3398     { "wglReleaseTexImageARB", X11DRV_wglReleaseTexImageARB },
3399   }
3400 };
3401
3402 static const WineGLExtension WGL_EXT_extensions_string =
3403 {
3404   "WGL_EXT_extensions_string",
3405   {
3406     { "wglGetExtensionsStringEXT", X11DRV_wglGetExtensionsStringEXT },
3407   }
3408 };
3409
3410 static const WineGLExtension WGL_EXT_swap_control =
3411 {
3412   "WGL_EXT_swap_control",
3413   {
3414     { "wglSwapIntervalEXT", X11DRV_wglSwapIntervalEXT },
3415     { "wglGetSwapIntervalEXT", X11DRV_wglGetSwapIntervalEXT },
3416   }
3417 };
3418
3419 static const WineGLExtension WGL_NV_vertex_array_range =
3420 {
3421   "WGL_NV_vertex_array_range",
3422   {
3423     { "wglAllocateMemoryNV", X11DRV_wglAllocateMemoryNV },
3424     { "wglFreeMemoryNV", X11DRV_wglFreeMemoryNV },
3425   }
3426 };
3427
3428 static const WineGLExtension WGL_WINE_pixel_format_passthrough =
3429 {
3430   "WGL_WINE_pixel_format_passthrough",
3431   {
3432     { "wglSetPixelFormatWINE", X11DRV_wglSetPixelFormatWINE },
3433   }
3434 };
3435
3436 /**
3437  * X11DRV_WineGL_LoadExtensions
3438  */
3439 static void X11DRV_WineGL_LoadExtensions(void)
3440 {
3441     WineGLInfo.wglExtensions[0] = 0;
3442
3443     /* Load Wine internal functions */
3444     register_extension(&WGL_internal_functions);
3445
3446     /* ARB Extensions */
3447
3448     if(glxRequireExtension("GLX_ARB_fbconfig_float"))
3449     {
3450         register_extension_string("WGL_ARB_pixel_format_float");
3451         register_extension_string("WGL_ATI_pixel_format_float");
3452     }
3453
3454     register_extension(&WGL_ARB_extensions_string);
3455
3456     if (glxRequireVersion(3))
3457         register_extension(&WGL_ARB_make_current_read);
3458
3459     if (glxRequireExtension("GLX_ARB_multisample"))
3460         register_extension(&WGL_ARB_multisample);
3461
3462     /* In general pbuffer functionality requires support in the X-server. The functionality is
3463      * available either when the GLX_SGIX_pbuffer is present or when the GLX server version is 1.3.
3464      * All display drivers except for Nvidia's use the GLX module from Xfree86/Xorg which only
3465      * supports GLX 1.2. The endresult is that only Nvidia's drivers support pbuffers.
3466      *
3467      * The only other drive which has pbuffer support is Ati's FGLRX driver. They provide clientside GLX 1.3 support
3468      * without support in the X-server (which other Mesa based drivers require).
3469      *
3470      * Support pbuffers when the GLX version is 1.3 and GLX_SGIX_pbuffer is available. Further pbuffers can
3471      * also be supported when GLX_ATI_render_texture is available. This extension depends on pbuffers, so when it
3472      * is available pbuffers must be available too. */
3473     if ( (glxRequireVersion(3) && glxRequireExtension("GLX_SGIX_pbuffer")) || glxRequireExtension("GLX_ATI_render_texture"))
3474         register_extension(&WGL_ARB_pbuffer);
3475
3476     register_extension(&WGL_ARB_pixel_format);
3477
3478     /* Support WGL_ARB_render_texture when there's support or pbuffer based emulation */
3479     if (glxRequireExtension("GLX_ATI_render_texture") ||
3480         glxRequireExtension("GLX_ARB_render_texture") ||
3481         (glxRequireVersion(3) && glxRequireExtension("GLX_SGIX_pbuffer") && use_render_texture_emulation))
3482     {
3483         register_extension(&WGL_ARB_render_texture);
3484
3485         /* The WGL version of GLX_NV_float_buffer requires render_texture */
3486         if(glxRequireExtension("GLX_NV_float_buffer"))
3487             register_extension_string("WGL_NV_float_buffer");
3488
3489         /* Again there's no GLX equivalent for this extension, so depend on the required GL extension */
3490         if(strstr(WineGLInfo.glExtensions, "GL_NV_texture_rectangle") != NULL)
3491             register_extension_string("WGL_NV_texture_rectangle");
3492     }
3493
3494     /* EXT Extensions */
3495
3496     register_extension(&WGL_EXT_extensions_string);
3497
3498     /* Load this extension even when it isn't backed by a GLX extension because it is has been around for ages.
3499      * Games like Call of Duty and K.O.T.O.R. rely on it. Further our emulation is good enough. */
3500     register_extension(&WGL_EXT_swap_control);
3501
3502     if(glxRequireExtension("GLX_EXT_framebuffer_sRGB"))
3503         register_extension_string("WGL_EXT_framebuffer_sRGB");
3504
3505     if(glxRequireExtension("GLX_EXT_fbconfig_packed_float"))
3506         register_extension_string("WGL_EXT_pixel_format_packed_float");
3507
3508     /* The OpenGL extension GL_NV_vertex_array_range adds wgl/glX functions which aren't exported as 'real' wgl/glX extensions. */
3509     if(strstr(WineGLInfo.glExtensions, "GL_NV_vertex_array_range") != NULL)
3510         register_extension(&WGL_NV_vertex_array_range);
3511
3512     /* WINE-specific WGL Extensions */
3513
3514     /* In WineD3D we need the ability to set the pixel format more than once (e.g. after a device reset).
3515      * The default wglSetPixelFormat doesn't allow this, so add our own which allows it.
3516      */
3517     register_extension(&WGL_WINE_pixel_format_passthrough);
3518 }
3519
3520
3521 Drawable get_glxdrawable(X11DRV_PDEVICE *physDev)
3522 {
3523     Drawable ret;
3524
3525     if(physDev->bitmap)
3526     {
3527         if (physDev->bitmap->hbitmap == BITMAP_stock_phys_bitmap.hbitmap)
3528             ret = physDev->drawable; /* PBuffer */
3529         else
3530             ret = physDev->bitmap->glxpixmap;
3531     }
3532     else if(physDev->gl_drawable)
3533         ret = physDev->gl_drawable;
3534     else
3535         ret = physDev->drawable;
3536     return ret;
3537 }
3538
3539 BOOL destroy_glxpixmap(Display *display, XID glxpixmap)
3540 {
3541     wine_tsx11_lock();
3542     pglXDestroyGLXPixmap(display, glxpixmap);
3543     wine_tsx11_unlock();
3544     return TRUE;
3545 }
3546
3547 /**
3548  * X11DRV_SwapBuffers
3549  *
3550  * Swap the buffers of this DC
3551  */
3552 BOOL CDECL X11DRV_SwapBuffers(X11DRV_PDEVICE *physDev)
3553 {
3554   GLXDrawable drawable;
3555   Wine_GLContext *ctx = NtCurrentTeb()->glContext;
3556
3557   if (!has_opengl()) return FALSE;
3558
3559   TRACE("(%p)\n", physDev);
3560
3561   drawable = get_glxdrawable(physDev);
3562
3563   wine_tsx11_lock();
3564   sync_context(ctx);
3565   if(physDev->pixmap) {
3566       if(pglXCopySubBufferMESA) {
3567           int w = physDev->dc_rect.right - physDev->dc_rect.left;
3568           int h = physDev->dc_rect.bottom - physDev->dc_rect.top;
3569
3570           /* (glX)SwapBuffers has an implicit glFlush effect, however
3571            * GLX_MESA_copy_sub_buffer doesn't. Make sure GL is flushed before
3572            * copying */
3573           pglFlush();
3574           if(w > 0 && h > 0)
3575               pglXCopySubBufferMESA(gdi_display, drawable, 0, 0, w, h);
3576       }
3577       else
3578           pglXSwapBuffers(gdi_display, drawable);
3579   }
3580   else
3581       pglXSwapBuffers(gdi_display, drawable);
3582
3583   flush_gl_drawable(physDev);
3584   wine_tsx11_unlock();
3585
3586   /* FPS support */
3587   if (TRACE_ON(fps))
3588   {
3589       static long prev_time, start_time;
3590       static unsigned long frames, frames_total;
3591
3592       DWORD time = GetTickCount();
3593       frames++;
3594       frames_total++;
3595       /* every 1.5 seconds */
3596       if (time - prev_time > 1500) {
3597           TRACE_(fps)("@ approx %.2ffps, total %.2ffps\n",
3598                       1000.0*frames/(time - prev_time), 1000.0*frames_total/(time - start_time));
3599           prev_time = time;
3600           frames = 0;
3601           if(start_time == 0) start_time = time;
3602       }
3603   }
3604
3605   return TRUE;
3606 }
3607
3608 XVisualInfo *visual_from_fbconfig_id( XID fbconfig_id )
3609 {
3610     WineGLPixelFormat *fmt;
3611     XVisualInfo *ret;
3612
3613     fmt = ConvertPixelFormatGLXtoWGL(gdi_display, fbconfig_id, 0 /* no flags */);
3614     if(fmt == NULL)
3615         return NULL;
3616
3617     wine_tsx11_lock();
3618     ret = pglXGetVisualFromFBConfig(gdi_display, fmt->fbconfig);
3619     wine_tsx11_unlock();
3620     return ret;
3621 }
3622
3623 #else  /* no OpenGL includes */
3624
3625 void X11DRV_OpenGL_Cleanup(void)
3626 {
3627 }
3628
3629 static inline void opengl_error(void)
3630 {
3631     static int warned;
3632     if (!warned++) ERR("No OpenGL support compiled in.\n");
3633 }
3634
3635 int pixelformat_from_fbconfig_id(XID fbconfig_id)
3636 {
3637     return 0;
3638 }
3639
3640 void mark_drawable_dirty(Drawable old, Drawable new)
3641 {
3642 }
3643
3644 void flush_gl_drawable(X11DRV_PDEVICE *physDev)
3645 {
3646 }
3647
3648 Drawable create_glxpixmap(Display *display, XVisualInfo *vis, Pixmap parent)
3649 {
3650     return 0;
3651 }
3652
3653 /***********************************************************************
3654  *              ChoosePixelFormat (X11DRV.@)
3655  */
3656 int CDECL X11DRV_ChoosePixelFormat(X11DRV_PDEVICE *physDev,
3657                                      const PIXELFORMATDESCRIPTOR *ppfd) {
3658   opengl_error();
3659   return 0;
3660 }
3661
3662 /***********************************************************************
3663  *              DescribePixelFormat (X11DRV.@)
3664  */
3665 int CDECL X11DRV_DescribePixelFormat(X11DRV_PDEVICE *physDev,
3666                                      int iPixelFormat,
3667                                      UINT nBytes,
3668                                      PIXELFORMATDESCRIPTOR *ppfd) {
3669   opengl_error();
3670   return 0;
3671 }
3672
3673 /***********************************************************************
3674  *              GetPixelFormat (X11DRV.@)
3675  */
3676 int CDECL X11DRV_GetPixelFormat(X11DRV_PDEVICE *physDev) {
3677   opengl_error();
3678   return 0;
3679 }
3680
3681 /***********************************************************************
3682  *              SetPixelFormat (X11DRV.@)
3683  */
3684 BOOL CDECL X11DRV_SetPixelFormat(X11DRV_PDEVICE *physDev,
3685                                    int iPixelFormat,
3686                                    const PIXELFORMATDESCRIPTOR *ppfd) {
3687   opengl_error();
3688   return FALSE;
3689 }
3690
3691 /***********************************************************************
3692  *              SwapBuffers (X11DRV.@)
3693  */
3694 BOOL CDECL X11DRV_SwapBuffers(X11DRV_PDEVICE *physDev) {
3695   opengl_error();
3696   return FALSE;
3697 }
3698
3699 /**
3700  * X11DRV_wglCopyContext
3701  *
3702  * For OpenGL32 wglCopyContext.
3703  */
3704 BOOL CDECL X11DRV_wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask) {
3705     opengl_error();
3706     return FALSE;
3707 }
3708
3709 /**
3710  * X11DRV_wglCreateContext
3711  *
3712  * For OpenGL32 wglCreateContext.
3713  */
3714 HGLRC CDECL X11DRV_wglCreateContext(X11DRV_PDEVICE *physDev) {
3715     opengl_error();
3716     return NULL;
3717 }
3718
3719 /**
3720  * X11DRV_wglDeleteContext
3721  *
3722  * For OpenGL32 wglDeleteContext.
3723  */
3724 BOOL CDECL X11DRV_wglDeleteContext(HGLRC hglrc) {
3725     opengl_error();
3726     return FALSE;
3727 }
3728
3729 /**
3730  * X11DRV_wglGetProcAddress
3731  *
3732  * For OpenGL32 wglGetProcAddress.
3733  */
3734 PROC CDECL X11DRV_wglGetProcAddress(LPCSTR lpszProc) {
3735     opengl_error();
3736     return NULL;
3737 }
3738
3739 HDC CDECL X11DRV_wglGetPbufferDCARB(X11DRV_PDEVICE *hDevice, void *hPbuffer)
3740 {
3741     opengl_error();
3742     return NULL;
3743 }
3744
3745 BOOL CDECL X11DRV_wglMakeContextCurrentARB(X11DRV_PDEVICE* hDrawDev, X11DRV_PDEVICE* hReadDev, HGLRC hglrc) {
3746     opengl_error();
3747     return FALSE;
3748 }
3749
3750 /**
3751  * X11DRV_wglMakeCurrent
3752  *
3753  * For OpenGL32 wglMakeCurrent.
3754  */
3755 BOOL CDECL X11DRV_wglMakeCurrent(X11DRV_PDEVICE *physDev, HGLRC hglrc) {
3756     opengl_error();
3757     return FALSE;
3758 }
3759
3760 /**
3761  * X11DRV_wglShareLists
3762  *
3763  * For OpenGL32 wglShareLists.
3764  */
3765 BOOL CDECL X11DRV_wglShareLists(HGLRC hglrc1, HGLRC hglrc2) {
3766     opengl_error();
3767     return FALSE;
3768 }
3769
3770 /**
3771  * X11DRV_wglUseFontBitmapsA
3772  *
3773  * For OpenGL32 wglUseFontBitmapsA.
3774  */
3775 BOOL CDECL X11DRV_wglUseFontBitmapsA(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
3776 {
3777     opengl_error();
3778     return FALSE;
3779 }
3780
3781 /**
3782  * X11DRV_wglUseFontBitmapsW
3783  *
3784  * For OpenGL32 wglUseFontBitmapsW.
3785  */
3786 BOOL CDECL X11DRV_wglUseFontBitmapsW(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
3787 {
3788     opengl_error();
3789     return FALSE;
3790 }
3791
3792 /**
3793  * X11DRV_wglSetPixelFormatWINE
3794  *
3795  * WGL_WINE_pixel_format_passthrough: wglSetPixelFormatWINE
3796  * This is a WINE-specific wglSetPixelFormat which can set the pixel format multiple times.
3797  */
3798 BOOL CDECL X11DRV_wglSetPixelFormatWINE(X11DRV_PDEVICE *physDev, int iPixelFormat, const PIXELFORMATDESCRIPTOR *ppfd)
3799 {
3800     opengl_error();
3801     return FALSE;
3802 }
3803
3804 Drawable get_glxdrawable(X11DRV_PDEVICE *physDev)
3805 {
3806     return 0;
3807 }
3808
3809 BOOL destroy_glxpixmap(Display *display, XID glxpixmap)
3810 {
3811     return FALSE;
3812 }
3813
3814 XVisualInfo *visual_from_fbconfig_id( XID fbconfig_id )
3815 {
3816     return NULL;
3817 }
3818
3819 #endif /* defined(HAVE_OPENGL) */