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