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 CDECL 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 CDECL 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 CDECL 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 CDECL 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 CDECL 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 CDECL 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 CDECL 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 CDECL 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 CDECL 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 CDECL 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 CDECL 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, size = 0;
1896      void *bitmap = NULL, *gl_bitmap = NULL;
1897      int org_alignment;
1898
1899      wine_tsx11_lock();
1900      pglGetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment);
1901      pglPixelStorei(GL_UNPACK_ALIGNMENT, 4);
1902      wine_tsx11_unlock();
1903
1904      for (glyph = first; glyph < first + count; glyph++) {
1905          unsigned int needed_size = GetGlyphOutline_ptr(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, NULL);
1906          unsigned int height, width_int;
1907
1908          TRACE("Glyph : %3d / List : %d\n", glyph, listBase);
1909          if (needed_size == GDI_ERROR) {
1910              TRACE("  - needed size : %d (GDI_ERROR)\n", needed_size);
1911              goto error;
1912          } else {
1913              TRACE("  - needed size : %d\n", needed_size);
1914          }
1915
1916          if (needed_size > size) {
1917              size = needed_size;
1918              HeapFree(GetProcessHeap(), 0, bitmap);
1919              HeapFree(GetProcessHeap(), 0, gl_bitmap);
1920              bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1921              gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1922          }
1923          if (GetGlyphOutline_ptr(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, NULL) == GDI_ERROR) goto error;
1924          if (TRACE_ON(wgl)) {
1925              unsigned int height, width, bitmask;
1926              unsigned char *bitmap_ = bitmap;
1927
1928              TRACE("  - bbox : %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY);
1929              TRACE("  - origin : (%d , %d)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y);
1930              TRACE("  - increment : %d - %d\n", gm.gmCellIncX, gm.gmCellIncY);
1931              if (needed_size != 0) {
1932                  TRACE("  - bitmap :\n");
1933                  for (height = 0; height < gm.gmBlackBoxY; height++) {
1934                      TRACE("      ");
1935                      for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) {
1936                          if (bitmask == 0) {
1937                              bitmap_ += 1;
1938                              bitmask = 0x80;
1939                          }
1940                          if (*bitmap_ & bitmask)
1941                              TRACE("*");
1942                          else
1943                              TRACE(" ");
1944                      }
1945                      bitmap_ += (4 - ((UINT_PTR)bitmap_ & 0x03));
1946                      TRACE("\n");
1947                  }
1948              }
1949          }
1950
1951          /* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
1952          * glyph for it to be drawn properly.
1953          */
1954          if (needed_size != 0) {
1955              width_int = (gm.gmBlackBoxX + 31) / 32;
1956              for (height = 0; height < gm.gmBlackBoxY; height++) {
1957                  unsigned int width;
1958                  for (width = 0; width < width_int; width++) {
1959                      ((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] =
1960                      ((int *) bitmap)[height * width_int + width];
1961                  }
1962              }
1963          }
1964
1965          wine_tsx11_lock();
1966          pglNewList(listBase++, GL_COMPILE);
1967          if (needed_size != 0) {
1968              pglBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
1969                      0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y,
1970                      gm.gmCellIncX, gm.gmCellIncY,
1971                      gl_bitmap);
1972          } else {
1973              /* This is the case of 'empty' glyphs like the space character */
1974              pglBitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL);
1975          }
1976          pglEndList();
1977          wine_tsx11_unlock();
1978      }
1979
1980      wine_tsx11_lock();
1981      pglPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
1982      wine_tsx11_unlock();
1983
1984      HeapFree(GetProcessHeap(), 0, bitmap);
1985      HeapFree(GetProcessHeap(), 0, gl_bitmap);
1986      return TRUE;
1987
1988   error:
1989      wine_tsx11_lock();
1990      pglPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
1991      wine_tsx11_unlock();
1992
1993      HeapFree(GetProcessHeap(), 0, bitmap);
1994      HeapFree(GetProcessHeap(), 0, gl_bitmap);
1995      return FALSE;
1996 }
1997
1998 /**
1999  * X11DRV_wglUseFontBitmapsA
2000  *
2001  * For OpenGL32 wglUseFontBitmapsA.
2002  */
2003 BOOL CDECL X11DRV_wglUseFontBitmapsA(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
2004 {
2005      Font fid = physDev->font;
2006
2007      TRACE("(%p, %d, %d, %d) using font %ld\n", physDev->hdc, first, count, listBase, fid);
2008
2009      if (!has_opengl()) return FALSE;
2010
2011      if (fid == 0) {
2012          return internal_wglUseFontBitmaps(physDev->hdc, first, count, listBase, GetGlyphOutlineA);
2013      }
2014
2015      wine_tsx11_lock();
2016      /* I assume that the glyphs are at the same position for X and for Windows */
2017      pglXUseXFont(fid, first, count, listBase);
2018      wine_tsx11_unlock();
2019      return TRUE;
2020 }
2021
2022 /**
2023  * X11DRV_wglUseFontBitmapsW
2024  *
2025  * For OpenGL32 wglUseFontBitmapsW.
2026  */
2027 BOOL CDECL X11DRV_wglUseFontBitmapsW(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
2028 {
2029      Font fid = physDev->font;
2030
2031      TRACE("(%p, %d, %d, %d) using font %ld\n", physDev->hdc, first, count, listBase, fid);
2032
2033      if (!has_opengl()) return FALSE;
2034
2035      if (fid == 0) {
2036          return internal_wglUseFontBitmaps(physDev->hdc, first, count, listBase, GetGlyphOutlineW);
2037      }
2038
2039      WARN("Using the glX API for the WCHAR variant - some characters may come out incorrectly !\n");
2040
2041      wine_tsx11_lock();
2042      /* I assume that the glyphs are at the same position for X and for Windows */
2043      pglXUseXFont(fid, first, count, listBase);
2044      wine_tsx11_unlock();
2045      return TRUE;
2046 }
2047
2048 /* WGL helper function which handles differences in glGetIntegerv from WGL and GLX */
2049 static void WINAPI X11DRV_wglGetIntegerv(GLenum pname, GLint* params)
2050 {
2051     wine_tsx11_lock();
2052     switch(pname)
2053     {
2054     case GL_DEPTH_BITS:
2055         {
2056             Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2057
2058             pglGetIntegerv(pname, params);
2059             /**
2060              * if we cannot find a Wine Context
2061              * we only have the default wine desktop context,
2062              * so if we have only a 24 depth say we have 32
2063              */
2064             if (!ctx && *params == 24) {
2065                 *params = 32;
2066             }
2067             TRACE("returns GL_DEPTH_BITS as '%d'\n", *params);
2068             break;
2069         }
2070     case GL_ALPHA_BITS:
2071         {
2072             Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2073
2074             pglXGetFBConfigAttrib(gdi_display, ctx->fmt->fbconfig, GLX_ALPHA_SIZE, params);
2075             TRACE("returns GL_ALPHA_BITS as '%d'\n", *params);
2076             break;
2077         }
2078     default:
2079         pglGetIntegerv(pname, params);
2080         break;
2081     }
2082     wine_tsx11_unlock();
2083 }
2084
2085 void flush_gl_drawable(X11DRV_PDEVICE *physDev)
2086 {
2087     int w, h;
2088
2089     if (!physDev->gl_copy)
2090         return;
2091
2092     w = physDev->dc_rect.right - physDev->dc_rect.left;
2093     h = physDev->dc_rect.bottom - physDev->dc_rect.top;
2094
2095     if(w > 0 && h > 0) {
2096         Drawable src = physDev->pixmap;
2097         if(!src) src = physDev->gl_drawable;
2098
2099         /* The GL drawable may be lagged behind if we don't flush first, so
2100          * flush the display make sure we copy up-to-date data */
2101         wine_tsx11_lock();
2102         XFlush(gdi_display);
2103         XSetFunction(gdi_display, physDev->gc, GXcopy);
2104         XCopyArea(gdi_display, src, physDev->drawable, physDev->gc, 0, 0, w, h,
2105                   physDev->dc_rect.left, physDev->dc_rect.top);
2106         wine_tsx11_unlock();
2107     }
2108 }
2109
2110
2111 static void WINAPI X11DRV_wglFinish(void)
2112 {
2113     Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2114     enum x11drv_escape_codes code = X11DRV_FLUSH_GL_DRAWABLE;
2115
2116     wine_tsx11_lock();
2117     sync_context(ctx);
2118     pglFinish();
2119     wine_tsx11_unlock();
2120     if (ctx) ExtEscape(ctx->hdc, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, 0, NULL );
2121 }
2122
2123 static void WINAPI X11DRV_wglFlush(void)
2124 {
2125     Wine_GLContext *ctx = NtCurrentTeb()->glContext;
2126     enum x11drv_escape_codes code = X11DRV_FLUSH_GL_DRAWABLE;
2127
2128     wine_tsx11_lock();
2129     sync_context(ctx);
2130     pglFlush();
2131     wine_tsx11_unlock();
2132     if (ctx) ExtEscape(ctx->hdc, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, 0, NULL );
2133 }
2134
2135 /**
2136  * X11DRV_wglGetExtensionsStringARB
2137  *
2138  * WGL_ARB_extensions_string: wglGetExtensionsStringARB
2139  */
2140 static const char * WINAPI X11DRV_wglGetExtensionsStringARB(HDC hdc) {
2141     TRACE("() returning \"%s\"\n", WineGLInfo.wglExtensions);
2142     return WineGLInfo.wglExtensions;
2143 }
2144
2145 /**
2146  * X11DRV_wglCreatePbufferARB
2147  *
2148  * WGL_ARB_pbuffer: wglCreatePbufferARB
2149  */
2150 static HPBUFFERARB WINAPI X11DRV_wglCreatePbufferARB(HDC hdc, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList)
2151 {
2152     Wine_GLPBuffer* object = NULL;
2153     WineGLPixelFormat *fmt = NULL;
2154     int nCfgs = 0;
2155     int attribs[256];
2156     int nAttribs = 0;
2157
2158     TRACE("(%p, %d, %d, %d, %p)\n", hdc, iPixelFormat, iWidth, iHeight, piAttribList);
2159
2160     if (0 >= iPixelFormat) {
2161         ERR("(%p): unexpected iPixelFormat(%d) <= 0, returns NULL\n", hdc, iPixelFormat);
2162         SetLastError(ERROR_INVALID_PIXEL_FORMAT);
2163         return NULL; /* unexpected error */
2164     }
2165
2166     /* Convert the WGL pixelformat to a GLX format, if it fails then the format is invalid */
2167     fmt = ConvertPixelFormatWGLtoGLX(gdi_display, iPixelFormat, TRUE /* Offscreen */, &nCfgs);
2168     if(!fmt) {
2169         ERR("(%p): unexpected iPixelFormat(%d) > nFormats(%d), returns NULL\n", hdc, iPixelFormat, nCfgs);
2170         SetLastError(ERROR_INVALID_PIXEL_FORMAT);
2171         goto create_failed; /* unexpected error */
2172     }
2173
2174     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(Wine_GLPBuffer));
2175     if (NULL == object) {
2176         SetLastError(ERROR_NO_SYSTEM_RESOURCES);
2177         goto create_failed; /* unexpected error */
2178     }
2179     object->hdc = hdc;
2180     object->display = gdi_display;
2181     object->width = iWidth;
2182     object->height = iHeight;
2183     object->fmt = fmt;
2184
2185     PUSH2(attribs, GLX_PBUFFER_WIDTH,  iWidth);
2186     PUSH2(attribs, GLX_PBUFFER_HEIGHT, iHeight);
2187     while (piAttribList && 0 != *piAttribList) {
2188         int attr_v;
2189         switch (*piAttribList) {
2190             case WGL_PBUFFER_LARGEST_ARB: {
2191                 ++piAttribList;
2192                 attr_v = *piAttribList;
2193                 TRACE("WGL_LARGEST_PBUFFER_ARB = %d\n", attr_v);
2194                 PUSH2(attribs, GLX_LARGEST_PBUFFER, attr_v);
2195                 break;
2196             }
2197
2198             case WGL_TEXTURE_FORMAT_ARB: {
2199                 ++piAttribList;
2200                 attr_v = *piAttribList;
2201                 TRACE("WGL_render_texture Attribute: WGL_TEXTURE_FORMAT_ARB as %x\n", attr_v);
2202                 if (use_render_texture_ati) {
2203                     int type = 0;
2204                     switch (attr_v) {
2205                         case WGL_NO_TEXTURE_ARB: type = GLX_NO_TEXTURE_ATI; break ;
2206                         case WGL_TEXTURE_RGB_ARB: type = GLX_TEXTURE_RGB_ATI; break ;
2207                         case WGL_TEXTURE_RGBA_ARB: type = GLX_TEXTURE_RGBA_ATI; break ;
2208                         default:
2209                             SetLastError(ERROR_INVALID_DATA);
2210                             goto create_failed;
2211                     }
2212                     object->use_render_texture = 1;
2213                     PUSH2(attribs, GLX_TEXTURE_FORMAT_ATI, type);
2214                 } else {
2215                     if (WGL_NO_TEXTURE_ARB == attr_v) {
2216                         object->use_render_texture = 0;
2217                     } else {
2218                         if (!use_render_texture_emulation) {
2219                             SetLastError(ERROR_INVALID_DATA);
2220                             goto create_failed;
2221                         }
2222                         switch (attr_v) {
2223                             case WGL_TEXTURE_RGB_ARB:
2224                                 object->use_render_texture = GL_RGB;
2225                                 object->texture_bpp = 3;
2226                                 object->texture_format = GL_RGB;
2227                                 object->texture_type = GL_UNSIGNED_BYTE;
2228                                 break;
2229                             case WGL_TEXTURE_RGBA_ARB:
2230                                 object->use_render_texture = GL_RGBA;
2231                                 object->texture_bpp = 4;
2232                                 object->texture_format = GL_RGBA;
2233                                 object->texture_type = GL_UNSIGNED_BYTE;
2234                                 break;
2235
2236                             /* WGL_FLOAT_COMPONENTS_NV */
2237                             case WGL_TEXTURE_FLOAT_R_NV:
2238                                 object->use_render_texture = GL_FLOAT_R_NV;
2239                                 object->texture_bpp = 4;
2240                                 object->texture_format = GL_RED;
2241                                 object->texture_type = GL_FLOAT;
2242                                 break;
2243                             case WGL_TEXTURE_FLOAT_RG_NV:
2244                                 object->use_render_texture = GL_FLOAT_RG_NV;
2245                                 object->texture_bpp = 8;
2246                                 object->texture_format = GL_LUMINANCE_ALPHA;
2247                                 object->texture_type = GL_FLOAT;
2248                                 break;
2249                             case WGL_TEXTURE_FLOAT_RGB_NV:
2250                                 object->use_render_texture = GL_FLOAT_RGB_NV;
2251                                 object->texture_bpp = 12;
2252                                 object->texture_format = GL_RGB;
2253                                 object->texture_type = GL_FLOAT;
2254                                 break;
2255                             case WGL_TEXTURE_FLOAT_RGBA_NV:
2256                                 object->use_render_texture = GL_FLOAT_RGBA_NV;
2257                                 object->texture_bpp = 16;
2258                                 object->texture_format = GL_RGBA;
2259                                 object->texture_type = GL_FLOAT;
2260                                 break;
2261                             default:
2262                                 ERR("Unknown texture format: %x\n", attr_v);
2263                                 SetLastError(ERROR_INVALID_DATA);
2264                                 goto create_failed;
2265                         }
2266                     }
2267                 }
2268                 break;
2269             }
2270
2271             case WGL_TEXTURE_TARGET_ARB: {
2272                 ++piAttribList;
2273                 attr_v = *piAttribList;
2274                 TRACE("WGL_render_texture Attribute: WGL_TEXTURE_TARGET_ARB as %x\n", attr_v);
2275                 if (use_render_texture_ati) {
2276                     int type = 0;
2277                     switch (attr_v) {
2278                         case WGL_NO_TEXTURE_ARB: type = GLX_NO_TEXTURE_ATI; break ;
2279                         case WGL_TEXTURE_CUBE_MAP_ARB: type = GLX_TEXTURE_CUBE_MAP_ATI; break ;
2280                         case WGL_TEXTURE_1D_ARB: type = GLX_TEXTURE_1D_ATI; break ;
2281                         case WGL_TEXTURE_2D_ARB: type = GLX_TEXTURE_2D_ATI; break ;
2282                         default:
2283                             SetLastError(ERROR_INVALID_DATA);
2284                             goto create_failed;
2285                     }
2286                     PUSH2(attribs, GLX_TEXTURE_TARGET_ATI, type);
2287                 } else {
2288                     if (WGL_NO_TEXTURE_ARB == attr_v) {
2289                         object->texture_target = 0;
2290                     } else {
2291                         if (!use_render_texture_emulation) {
2292                             SetLastError(ERROR_INVALID_DATA);
2293                             goto create_failed;
2294                         }
2295                         switch (attr_v) {
2296                             case WGL_TEXTURE_CUBE_MAP_ARB: {
2297                                 if (iWidth != iHeight) {
2298                                     SetLastError(ERROR_INVALID_DATA);
2299                                     goto create_failed;
2300                                 }
2301                                 object->texture_target = GL_TEXTURE_CUBE_MAP;
2302                                 object->texture_bind_target = GL_TEXTURE_BINDING_CUBE_MAP;
2303                                break;
2304                             }
2305                             case WGL_TEXTURE_1D_ARB: {
2306                                 if (1 != iHeight) {
2307                                     SetLastError(ERROR_INVALID_DATA);
2308                                     goto create_failed;
2309                                 }
2310                                 object->texture_target = GL_TEXTURE_1D;
2311                                 object->texture_bind_target = GL_TEXTURE_BINDING_1D;
2312                                 break;
2313                             }
2314                             case WGL_TEXTURE_2D_ARB: {
2315                                 object->texture_target = GL_TEXTURE_2D;
2316                                 object->texture_bind_target = GL_TEXTURE_BINDING_2D;
2317                                 break;
2318                             }
2319                             case WGL_TEXTURE_RECTANGLE_NV: {
2320                                 object->texture_target = GL_TEXTURE_RECTANGLE_NV;
2321                                 object->texture_bind_target = GL_TEXTURE_BINDING_RECTANGLE_NV;
2322                                 break;
2323                             }
2324                             default:
2325                                 ERR("Unknown texture target: %x\n", attr_v);
2326                                 SetLastError(ERROR_INVALID_DATA);
2327                                 goto create_failed;
2328                         }
2329                     }
2330                 }
2331                 break;
2332             }
2333
2334             case WGL_MIPMAP_TEXTURE_ARB: {
2335                 ++piAttribList;
2336                 attr_v = *piAttribList;
2337                 TRACE("WGL_render_texture Attribute: WGL_MIPMAP_TEXTURE_ARB as %x\n", attr_v);
2338                 if (use_render_texture_ati) {
2339                     PUSH2(attribs, GLX_MIPMAP_TEXTURE_ATI, attr_v);
2340                 } else {
2341                     if (!use_render_texture_emulation) {
2342                         SetLastError(ERROR_INVALID_DATA);
2343                         goto create_failed;
2344                     }
2345                 }
2346                 break;
2347             }
2348         }
2349         ++piAttribList;
2350     }
2351
2352     PUSH1(attribs, None);
2353     wine_tsx11_lock();
2354     object->drawable = pglXCreatePbuffer(gdi_display, fmt->fbconfig, attribs);
2355     wine_tsx11_unlock();
2356     TRACE("new Pbuffer drawable as %p\n", (void*) object->drawable);
2357     if (!object->drawable) {
2358         SetLastError(ERROR_NO_SYSTEM_RESOURCES);
2359         goto create_failed; /* unexpected error */
2360     }
2361     TRACE("->(%p)\n", object);
2362     return object;
2363
2364 create_failed:
2365     HeapFree(GetProcessHeap(), 0, object);
2366     TRACE("->(FAILED)\n");
2367     return NULL;
2368 }
2369
2370 /**
2371  * X11DRV_wglDestroyPbufferARB
2372  *
2373  * WGL_ARB_pbuffer: wglDestroyPbufferARB
2374  */
2375 static GLboolean WINAPI X11DRV_wglDestroyPbufferARB(HPBUFFERARB hPbuffer)
2376 {
2377     Wine_GLPBuffer* object = hPbuffer;
2378     TRACE("(%p)\n", hPbuffer);
2379     if (NULL == object) {
2380         SetLastError(ERROR_INVALID_HANDLE);
2381         return GL_FALSE;
2382     }
2383     wine_tsx11_lock();
2384     pglXDestroyPbuffer(object->display, object->drawable);
2385     wine_tsx11_unlock();
2386     HeapFree(GetProcessHeap(), 0, object);
2387     return GL_TRUE;
2388 }
2389
2390 /**
2391  * X11DRV_wglGetPbufferDCARB
2392  *
2393  * WGL_ARB_pbuffer: wglGetPbufferDCARB
2394  * The function wglGetPbufferDCARB returns a device context for a pbuffer.
2395  * Gdi32 implements the part of this function which creates a device context.
2396  * This part associates the physDev with the X drawable of the pbuffer.
2397  */
2398 HDC CDECL X11DRV_wglGetPbufferDCARB(X11DRV_PDEVICE *physDev, HPBUFFERARB hPbuffer)
2399 {
2400     Wine_GLPBuffer* object = hPbuffer;
2401     if (NULL == object) {
2402         SetLastError(ERROR_INVALID_HANDLE);
2403         return NULL;
2404     }
2405
2406     /* The function wglGetPbufferDCARB returns a DC to which the pbuffer can be connected.
2407      * All formats in our pixelformat list are compatible with each other and the main drawable. */
2408     physDev->current_pf = object->fmt->iPixelFormat;
2409     physDev->drawable = object->drawable;
2410     SetRect( &physDev->drawable_rect, 0, 0, object->width, object->height );
2411     physDev->dc_rect = physDev->drawable_rect;
2412
2413     TRACE("(%p)->(%p)\n", hPbuffer, physDev->hdc);
2414     return physDev->hdc;
2415 }
2416
2417 /**
2418  * X11DRV_wglQueryPbufferARB
2419  *
2420  * WGL_ARB_pbuffer: wglQueryPbufferARB
2421  */
2422 static GLboolean WINAPI X11DRV_wglQueryPbufferARB(HPBUFFERARB hPbuffer, int iAttribute, int *piValue)
2423 {
2424     Wine_GLPBuffer* object = hPbuffer;
2425     TRACE("(%p, 0x%x, %p)\n", hPbuffer, iAttribute, piValue);
2426     if (NULL == object) {
2427         SetLastError(ERROR_INVALID_HANDLE);
2428         return GL_FALSE;
2429     }
2430     switch (iAttribute) {
2431         case WGL_PBUFFER_WIDTH_ARB:
2432             wine_tsx11_lock();
2433             pglXQueryDrawable(object->display, object->drawable, GLX_WIDTH, (unsigned int*) piValue);
2434             wine_tsx11_unlock();
2435             break;
2436         case WGL_PBUFFER_HEIGHT_ARB:
2437             wine_tsx11_lock();
2438             pglXQueryDrawable(object->display, object->drawable, GLX_HEIGHT, (unsigned int*) piValue);
2439             wine_tsx11_unlock();
2440             break;
2441
2442         case WGL_PBUFFER_LOST_ARB:
2443             /* GLX Pbuffers cannot be lost by default. We can support this by
2444              * setting GLX_PRESERVED_CONTENTS to False and using glXSelectEvent
2445              * to receive pixel buffer clobber events, however that may or may
2446              * not give any benefit */
2447             *piValue = GL_FALSE;
2448             break;
2449
2450         case WGL_TEXTURE_FORMAT_ARB:
2451             if (use_render_texture_ati) {
2452                 unsigned int tmp;
2453                 int type = WGL_NO_TEXTURE_ARB;
2454                 wine_tsx11_lock();
2455                 pglXQueryDrawable(object->display, object->drawable, GLX_TEXTURE_FORMAT_ATI, &tmp);
2456                 wine_tsx11_unlock();
2457                 switch (tmp) {
2458                     case GLX_NO_TEXTURE_ATI: type = WGL_NO_TEXTURE_ARB; break ;
2459                     case GLX_TEXTURE_RGB_ATI: type = WGL_TEXTURE_RGB_ARB; break ;
2460                     case GLX_TEXTURE_RGBA_ATI: type = WGL_TEXTURE_RGBA_ARB; break ;
2461                 }
2462                 *piValue = type;
2463             } else {
2464                 if (!object->use_render_texture) {
2465                     *piValue = WGL_NO_TEXTURE_ARB;
2466                 } else {
2467                     if (!use_render_texture_emulation) {
2468                         SetLastError(ERROR_INVALID_HANDLE);
2469                         return GL_FALSE;
2470                     }
2471                     switch(object->use_render_texture) {
2472                         case GL_RGB:
2473                             *piValue = WGL_TEXTURE_RGB_ARB;
2474                             break;
2475                         case GL_RGBA:
2476                             *piValue = WGL_TEXTURE_RGBA_ARB;
2477                             break;
2478                         /* WGL_FLOAT_COMPONENTS_NV */
2479                         case GL_FLOAT_R_NV:
2480                             *piValue = WGL_TEXTURE_FLOAT_R_NV;
2481                             break;
2482                         case GL_FLOAT_RG_NV:
2483                             *piValue = WGL_TEXTURE_FLOAT_RG_NV;
2484                             break;
2485                         case GL_FLOAT_RGB_NV:
2486                             *piValue = WGL_TEXTURE_FLOAT_RGB_NV;
2487                             break;
2488                         case GL_FLOAT_RGBA_NV:
2489                             *piValue = WGL_TEXTURE_FLOAT_RGBA_NV;
2490                             break;
2491                         default:
2492                             ERR("Unknown texture format: %x\n", object->use_render_texture);
2493                     }
2494                 }
2495             }
2496             break;
2497
2498         case WGL_TEXTURE_TARGET_ARB:
2499             if (use_render_texture_ati) {
2500                 unsigned int tmp;
2501                 int type = WGL_NO_TEXTURE_ARB;
2502                 wine_tsx11_lock();
2503                 pglXQueryDrawable(object->display, object->drawable, GLX_TEXTURE_TARGET_ATI, &tmp);
2504                 wine_tsx11_unlock();
2505                 switch (tmp) {
2506                     case GLX_NO_TEXTURE_ATI: type = WGL_NO_TEXTURE_ARB; break ;
2507                     case GLX_TEXTURE_CUBE_MAP_ATI: type = WGL_TEXTURE_CUBE_MAP_ARB; break ;
2508                     case GLX_TEXTURE_1D_ATI: type = WGL_TEXTURE_1D_ARB; break ;
2509                     case GLX_TEXTURE_2D_ATI: type = WGL_TEXTURE_2D_ARB; break ;
2510                 }
2511                 *piValue = type;
2512             } else {
2513             if (!object->texture_target) {
2514                 *piValue = WGL_NO_TEXTURE_ARB;
2515             } else {
2516                 if (!use_render_texture_emulation) {
2517                     SetLastError(ERROR_INVALID_DATA);
2518                     return GL_FALSE;
2519                 }
2520                 switch (object->texture_target) {
2521                     case GL_TEXTURE_1D:       *piValue = WGL_TEXTURE_1D_ARB; break;
2522                     case GL_TEXTURE_2D:       *piValue = WGL_TEXTURE_2D_ARB; break;
2523                     case GL_TEXTURE_CUBE_MAP: *piValue = WGL_TEXTURE_CUBE_MAP_ARB; break;
2524                     case GL_TEXTURE_RECTANGLE_NV: *piValue = WGL_TEXTURE_RECTANGLE_NV; break;
2525                 }
2526             }
2527         }
2528         break;
2529
2530     case WGL_MIPMAP_TEXTURE_ARB:
2531         if (use_render_texture_ati) {
2532             wine_tsx11_lock();
2533             pglXQueryDrawable(object->display, object->drawable, GLX_MIPMAP_TEXTURE_ATI, (unsigned int*) piValue);
2534             wine_tsx11_unlock();
2535         } else {
2536             *piValue = GL_FALSE; /** don't support that */
2537             FIXME("unsupported WGL_ARB_render_texture attribute query for 0x%x\n", iAttribute);
2538         }
2539         break;
2540
2541     default:
2542         FIXME("unexpected attribute %x\n", iAttribute);
2543         break;
2544     }
2545
2546     return GL_TRUE;
2547 }
2548
2549 /**
2550  * X11DRV_wglReleasePbufferDCARB
2551  *
2552  * WGL_ARB_pbuffer: wglReleasePbufferDCARB
2553  */
2554 static int WINAPI X11DRV_wglReleasePbufferDCARB(HPBUFFERARB hPbuffer, HDC hdc)
2555 {
2556     TRACE("(%p, %p)\n", hPbuffer, hdc);
2557     return DeleteDC(hdc);
2558 }
2559
2560 /**
2561  * X11DRV_wglSetPbufferAttribARB
2562  *
2563  * WGL_ARB_pbuffer: wglSetPbufferAttribARB
2564  */
2565 static GLboolean WINAPI X11DRV_wglSetPbufferAttribARB(HPBUFFERARB hPbuffer, const int *piAttribList)
2566 {
2567     Wine_GLPBuffer* object = hPbuffer;
2568     GLboolean ret = GL_FALSE;
2569
2570     WARN("(%p, %p): alpha-testing, report any problem\n", hPbuffer, piAttribList);
2571     if (NULL == object) {
2572         SetLastError(ERROR_INVALID_HANDLE);
2573         return GL_FALSE;
2574     }
2575     if (!object->use_render_texture) {
2576         SetLastError(ERROR_INVALID_HANDLE);
2577         return GL_FALSE;
2578     }
2579     if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
2580         return GL_TRUE;
2581     }
2582     if (NULL != pglXDrawableAttribATI) {
2583         if (use_render_texture_ati) {
2584             FIXME("Need conversion for GLX_ATI_render_texture\n");
2585         }
2586         wine_tsx11_lock();
2587         ret = pglXDrawableAttribATI(object->display, object->drawable, piAttribList);
2588         wine_tsx11_unlock();
2589     }
2590     return ret;
2591 }
2592
2593 /**
2594  * X11DRV_wglChoosePixelFormatARB
2595  *
2596  * WGL_ARB_pixel_format: wglChoosePixelFormatARB
2597  */
2598 static GLboolean WINAPI X11DRV_wglChoosePixelFormatARB(HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats)
2599 {
2600     int gl_test = 0;
2601     int attribs[256];
2602     int nAttribs = 0;
2603     GLXFBConfig* cfgs = NULL;
2604     int nCfgs = 0;
2605     int it;
2606     int fmt_id;
2607     WineGLPixelFormat *fmt;
2608     UINT pfmt_it = 0;
2609     int run;
2610
2611     TRACE("(%p, %p, %p, %d, %p, %p): hackish\n", hdc, piAttribIList, pfAttribFList, nMaxFormats, piFormats, nNumFormats);
2612     if (NULL != pfAttribFList) {
2613         FIXME("unused pfAttribFList\n");
2614     }
2615
2616     nAttribs = ConvertAttribWGLtoGLX(piAttribIList, attribs, NULL);
2617     if (-1 == nAttribs) {
2618         WARN("Cannot convert WGL to GLX attributes\n");
2619         return GL_FALSE;
2620     }
2621     PUSH1(attribs, None);
2622
2623     /* Search for FB configurations matching the requirements in attribs */
2624     wine_tsx11_lock();
2625     cfgs = pglXChooseFBConfig(gdi_display, DefaultScreen(gdi_display), attribs, &nCfgs);
2626     if (NULL == cfgs) {
2627         wine_tsx11_unlock();
2628         WARN("Compatible Pixel Format not found\n");
2629         return GL_FALSE;
2630     }
2631
2632     /* Loop through all matching formats and check if they are suitable.
2633     * Note that this function should at max return nMaxFormats different formats */
2634     for(run=0; run < 2; run++)
2635     {
2636         for (it = 0; it < nCfgs; ++it) {
2637             gl_test = pglXGetFBConfigAttrib(gdi_display, cfgs[it], GLX_FBCONFIG_ID, &fmt_id);
2638             if (gl_test) {
2639                 ERR("Failed to retrieve FBCONFIG_ID from GLXFBConfig, expect problems.\n");
2640                 continue;
2641             }
2642
2643             /* Search for the format in our list of compatible formats */
2644             fmt = ConvertPixelFormatGLXtoWGL(gdi_display, fmt_id);
2645             if(!fmt)
2646                 continue;
2647
2648             /* During the first run we only want onscreen formats and during the second only offscreen 'XOR' */
2649             if( ((run == 0) && fmt->offscreenOnly) || ((run == 1) && !fmt->offscreenOnly) )
2650                 continue;
2651
2652             if(pfmt_it < nMaxFormats) {
2653                 piFormats[pfmt_it] = fmt->iPixelFormat;
2654                 TRACE("at %d/%d found FBCONFIG_ID 0x%x (%d)\n", it + 1, nCfgs, fmt_id, piFormats[pfmt_it]);
2655             }
2656             pfmt_it++;
2657         }
2658     }
2659
2660     *nNumFormats = pfmt_it;
2661     /** free list */
2662     XFree(cfgs);
2663     wine_tsx11_unlock();
2664     return GL_TRUE;
2665 }
2666
2667 /**
2668  * X11DRV_wglGetPixelFormatAttribivARB
2669  *
2670  * WGL_ARB_pixel_format: wglGetPixelFormatAttribivARB
2671  */
2672 static GLboolean WINAPI X11DRV_wglGetPixelFormatAttribivARB(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues)
2673 {
2674     UINT i;
2675     WineGLPixelFormat *fmt = NULL;
2676     int hTest;
2677     int tmp;
2678     int curGLXAttr = 0;
2679     int nWGLFormats = 0;
2680
2681     TRACE("(%p, %d, %d, %d, %p, %p)\n", hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, piValues);
2682
2683     if (0 < iLayerPlane) {
2684         FIXME("unsupported iLayerPlane(%d) > 0, returns FALSE\n", iLayerPlane);
2685         return GL_FALSE;
2686     }
2687
2688     /* Convert the WGL pixelformat to a GLX one, if this fails then most likely the iPixelFormat isn't supported.
2689     * We don't have to fail yet as a program can specify an invalid iPixelFormat (lets say 0) if it wants to query
2690     * the number of supported WGL formats. Whether the iPixelFormat is valid is handled in the for-loop below. */
2691     fmt = ConvertPixelFormatWGLtoGLX(gdi_display, iPixelFormat, TRUE /* Offscreen */, &nWGLFormats);
2692     if(!fmt) {
2693         WARN("Unable to convert iPixelFormat %d to a GLX one!\n", iPixelFormat);
2694     }
2695
2696     wine_tsx11_lock();
2697     for (i = 0; i < nAttributes; ++i) {
2698         const int curWGLAttr = piAttributes[i];
2699         TRACE("pAttr[%d] = %x\n", i, curWGLAttr);
2700
2701         switch (curWGLAttr) {
2702             case WGL_NUMBER_PIXEL_FORMATS_ARB:
2703                 piValues[i] = nWGLFormats;
2704                 continue;
2705
2706             case WGL_SUPPORT_OPENGL_ARB:
2707                 piValues[i] = GL_TRUE;
2708                 continue;
2709
2710             case WGL_ACCELERATION_ARB:
2711                 curGLXAttr = GLX_CONFIG_CAVEAT;
2712                 if (!fmt) goto pix_error;
2713                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, &tmp);
2714                 if (hTest) goto get_error;
2715                 switch (tmp) {
2716                     case GLX_NONE: piValues[i] = WGL_FULL_ACCELERATION_ARB; break;
2717                     case GLX_SLOW_CONFIG: piValues[i] = WGL_GENERIC_ACCELERATION_ARB; break;
2718                     case GLX_NON_CONFORMANT_CONFIG: piValues[i] = WGL_FULL_ACCELERATION_ARB; break;
2719                     default:
2720                         ERR("unexpected Config Caveat(%x)\n", tmp);
2721                         piValues[i] = WGL_NO_ACCELERATION_ARB;
2722                 }
2723                 continue;
2724
2725             case WGL_TRANSPARENT_ARB:
2726                 curGLXAttr = GLX_TRANSPARENT_TYPE;
2727                 if (!fmt) goto pix_error;
2728                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, &tmp);
2729                 if (hTest) goto get_error;
2730                     piValues[i] = GL_FALSE;
2731                 if (GLX_NONE != tmp) piValues[i] = GL_TRUE;
2732                     continue;
2733
2734             case WGL_PIXEL_TYPE_ARB:
2735                 curGLXAttr = GLX_RENDER_TYPE;
2736                 if (!fmt) goto pix_error;
2737                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, &tmp);
2738                 if (hTest) goto get_error;
2739                 TRACE("WGL_PIXEL_TYPE_ARB: GLX_RENDER_TYPE = 0x%x\n", tmp);
2740                 if      (tmp & GLX_RGBA_BIT)           { piValues[i] = WGL_TYPE_RGBA_ARB; }
2741                 else if (tmp & GLX_COLOR_INDEX_BIT)    { piValues[i] = WGL_TYPE_COLORINDEX_ARB; }
2742                 else if (tmp & GLX_RGBA_FLOAT_BIT)     { piValues[i] = WGL_TYPE_RGBA_FLOAT_ATI; }
2743                 else if (tmp & GLX_RGBA_FLOAT_ATI_BIT) { piValues[i] = WGL_TYPE_RGBA_FLOAT_ATI; }
2744                 else {
2745                     ERR("unexpected RenderType(%x)\n", tmp);
2746                     piValues[i] = WGL_TYPE_RGBA_ARB;
2747                 }
2748                 continue;
2749
2750             case WGL_COLOR_BITS_ARB:
2751                 curGLXAttr = GLX_BUFFER_SIZE;
2752                 break;
2753
2754             case WGL_BIND_TO_TEXTURE_RGB_ARB:
2755                 if (use_render_texture_ati) {
2756                     curGLXAttr = GLX_BIND_TO_TEXTURE_RGB_ATI;
2757                     break;
2758                 }
2759             case WGL_BIND_TO_TEXTURE_RGBA_ARB:
2760                 if (use_render_texture_ati) {
2761                     curGLXAttr = GLX_BIND_TO_TEXTURE_RGBA_ATI;
2762                     break;
2763                 }
2764                 if (!use_render_texture_emulation) {
2765                     piValues[i] = GL_FALSE;
2766                     continue;
2767                 }
2768                 curGLXAttr = GLX_RENDER_TYPE;
2769                 if (!fmt) goto pix_error;
2770                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, &tmp);
2771                 if (hTest) goto get_error;
2772                 if (GLX_COLOR_INDEX_BIT == tmp) {
2773                     piValues[i] = GL_FALSE;
2774                     continue;
2775                 }
2776                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DRAWABLE_TYPE, &tmp);
2777                 if (hTest) goto get_error;
2778                 piValues[i] = (tmp & GLX_PBUFFER_BIT) ? GL_TRUE : GL_FALSE;
2779                 continue;
2780
2781             case WGL_BLUE_BITS_ARB:
2782                 curGLXAttr = GLX_BLUE_SIZE;
2783                 break;
2784             case WGL_RED_BITS_ARB:
2785                 curGLXAttr = GLX_RED_SIZE;
2786                 break;
2787             case WGL_GREEN_BITS_ARB:
2788                 curGLXAttr = GLX_GREEN_SIZE;
2789                 break;
2790             case WGL_ALPHA_BITS_ARB:
2791                 curGLXAttr = GLX_ALPHA_SIZE;
2792                 break;
2793             case WGL_DEPTH_BITS_ARB:
2794                 curGLXAttr = GLX_DEPTH_SIZE;
2795                 break;
2796             case WGL_STENCIL_BITS_ARB:
2797                 curGLXAttr = GLX_STENCIL_SIZE;
2798                 break;
2799             case WGL_DOUBLE_BUFFER_ARB:
2800                 curGLXAttr = GLX_DOUBLEBUFFER;
2801                 break;
2802             case WGL_STEREO_ARB:
2803                 curGLXAttr = GLX_STEREO;
2804                 break;
2805             case WGL_AUX_BUFFERS_ARB:
2806                 curGLXAttr = GLX_AUX_BUFFERS;
2807                 break;
2808
2809             case WGL_SUPPORT_GDI_ARB:
2810                 if (!fmt) goto pix_error;
2811                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DOUBLEBUFFER, &tmp);
2812                 if (hTest) goto get_error;
2813                 if(tmp) {
2814                     piValues[i] = GL_FALSE;
2815                     continue;
2816                 }
2817                 curGLXAttr = GLX_X_RENDERABLE;
2818                 break;
2819
2820             case WGL_DRAW_TO_WINDOW_ARB:
2821             case WGL_DRAW_TO_BITMAP_ARB:
2822             case WGL_DRAW_TO_PBUFFER_ARB:
2823                 if (!fmt) goto pix_error;
2824                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_DRAWABLE_TYPE, &tmp);
2825                 if (hTest) goto get_error;
2826                 if((curWGLAttr == WGL_DRAW_TO_WINDOW_ARB && (tmp&GLX_WINDOW_BIT)) ||
2827                    (curWGLAttr == WGL_DRAW_TO_BITMAP_ARB && (tmp&GLX_PIXMAP_BIT)) ||
2828                    (curWGLAttr == WGL_DRAW_TO_PBUFFER_ARB && (tmp&GLX_PBUFFER_BIT)))
2829                     piValues[i] = GL_TRUE;
2830                 else
2831                     piValues[i] = GL_FALSE;
2832                 continue;
2833
2834             case WGL_PBUFFER_LARGEST_ARB:
2835                 curGLXAttr = GLX_LARGEST_PBUFFER;
2836                 break;
2837
2838             case WGL_SAMPLE_BUFFERS_ARB:
2839                 curGLXAttr = GLX_SAMPLE_BUFFERS_ARB;
2840                 break;
2841
2842             case WGL_SAMPLES_ARB:
2843                 curGLXAttr = GLX_SAMPLES_ARB;
2844                 break;
2845
2846             case WGL_FLOAT_COMPONENTS_NV:
2847                 curGLXAttr = GLX_FLOAT_COMPONENTS_NV;
2848                 break;
2849
2850             case WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT:
2851                 curGLXAttr = GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT;
2852                 break;
2853
2854             case WGL_ACCUM_RED_BITS_ARB:
2855                 curGLXAttr = GLX_ACCUM_RED_SIZE;
2856                 break;
2857             case WGL_ACCUM_GREEN_BITS_ARB:
2858                 curGLXAttr = GLX_ACCUM_GREEN_SIZE;
2859                 break;
2860             case WGL_ACCUM_BLUE_BITS_ARB:
2861                 curGLXAttr = GLX_ACCUM_BLUE_SIZE;
2862                 break;
2863             case WGL_ACCUM_ALPHA_BITS_ARB:
2864                 curGLXAttr = GLX_ACCUM_ALPHA_SIZE;
2865                 break;
2866             case WGL_ACCUM_BITS_ARB:
2867                 if (!fmt) goto pix_error;
2868                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_RED_SIZE, &tmp);
2869                 if (hTest) goto get_error;
2870                 piValues[i] = tmp;
2871                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_GREEN_SIZE, &tmp);
2872                 if (hTest) goto get_error;
2873                 piValues[i] += tmp;
2874                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_BLUE_SIZE, &tmp);
2875                 if (hTest) goto get_error;
2876                 piValues[i] += tmp;
2877                 hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, GLX_ACCUM_ALPHA_SIZE, &tmp);
2878                 if (hTest) goto get_error;
2879                 piValues[i] += tmp;
2880                 continue;
2881
2882             default:
2883                 FIXME("unsupported %x WGL Attribute\n", curWGLAttr);
2884         }
2885
2886         /* Retrieve a GLX FBConfigAttrib when the attribute to query is valid and
2887          * iPixelFormat != 0. When iPixelFormat is 0 the only value which makes
2888          * sense to query is WGL_NUMBER_PIXEL_FORMATS_ARB.
2889          *
2890          * TODO: properly test the behavior of wglGetPixelFormatAttrib*v on Windows
2891          *       and check which options can work using iPixelFormat=0 and which not.
2892          *       A problem would be that this function is an extension. This would
2893          *       mean that the behavior could differ between different vendors (ATI, Nvidia, ..).
2894          */
2895         if (0 != curGLXAttr && iPixelFormat != 0) {
2896             if (!fmt) goto pix_error;
2897             hTest = pglXGetFBConfigAttrib(gdi_display, fmt->fbconfig, curGLXAttr, piValues + i);
2898             if (hTest) goto get_error;
2899             curGLXAttr = 0;
2900         } else {
2901             piValues[i] = GL_FALSE;
2902         }
2903     }
2904     wine_tsx11_unlock();
2905     return GL_TRUE;
2906
2907 get_error:
2908     wine_tsx11_unlock();
2909     ERR("(%p): unexpected failure on GetFBConfigAttrib(%x) returns FALSE\n", hdc, curGLXAttr);
2910     return GL_FALSE;
2911
2912 pix_error:
2913     wine_tsx11_unlock();
2914     ERR("(%p): unexpected iPixelFormat(%d) vs nFormats(%d), returns FALSE\n", hdc, iPixelFormat, nWGLFormats);
2915     return GL_FALSE;
2916 }
2917
2918 /**
2919  * X11DRV_wglGetPixelFormatAttribfvARB
2920  *
2921  * WGL_ARB_pixel_format: wglGetPixelFormatAttribfvARB
2922  */
2923 static GLboolean WINAPI X11DRV_wglGetPixelFormatAttribfvARB(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues)
2924 {
2925     int *attr;
2926     int ret;
2927     UINT i;
2928
2929     TRACE("(%p, %d, %d, %d, %p, %p)\n", hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, pfValues);
2930
2931     /* Allocate a temporary array to store integer values */
2932     attr = HeapAlloc(GetProcessHeap(), 0, nAttributes * sizeof(int));
2933     if (!attr) {
2934         ERR("couldn't allocate %d array\n", nAttributes);
2935         return GL_FALSE;
2936     }
2937
2938     /* Piggy-back on wglGetPixelFormatAttribivARB */
2939     ret = X11DRV_wglGetPixelFormatAttribivARB(hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, attr);
2940     if (ret) {
2941         /* Convert integer values to float. Should also check for attributes
2942            that can give decimal values here */
2943         for (i=0; i<nAttributes;i++) {
2944             pfValues[i] = attr[i];
2945         }
2946     }
2947
2948     HeapFree(GetProcessHeap(), 0, attr);
2949     return ret;
2950 }
2951
2952 /**
2953  * X11DRV_wglBindTexImageARB
2954  *
2955  * WGL_ARB_render_texture: wglBindTexImageARB
2956  */
2957 static GLboolean WINAPI X11DRV_wglBindTexImageARB(HPBUFFERARB hPbuffer, int iBuffer)
2958 {
2959     Wine_GLPBuffer* object = hPbuffer;
2960     GLboolean ret = GL_FALSE;
2961
2962     TRACE("(%p, %d)\n", hPbuffer, iBuffer);
2963     if (NULL == object) {
2964         SetLastError(ERROR_INVALID_HANDLE);
2965         return GL_FALSE;
2966     }
2967     if (!object->use_render_texture) {
2968         SetLastError(ERROR_INVALID_HANDLE);
2969         return GL_FALSE;
2970     }
2971
2972     if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
2973         static int init = 0;
2974         int prev_binded_texture = 0;
2975         GLXContext prev_context;
2976         Drawable prev_drawable;
2977         GLXContext tmp_context;
2978
2979         wine_tsx11_lock();
2980         prev_context = pglXGetCurrentContext();
2981         prev_drawable = pglXGetCurrentDrawable();
2982
2983         /* Our render_texture emulation is basic and lacks some features (1D/Cube support).
2984            This is mostly due to lack of demos/games using them. Further the use of glReadPixels
2985            isn't ideal performance wise but I wasn't able to get other ways working.
2986         */
2987         if(!init) {
2988             init = 1; /* Only show the FIXME once for performance reasons */
2989             FIXME("partial stub!\n");
2990         }
2991
2992         TRACE("drawable=%p, context=%p\n", (void*)object->drawable, prev_context);
2993         tmp_context = pglXCreateNewContext(gdi_display, object->fmt->fbconfig, object->fmt->render_type, prev_context, True);
2994
2995         pglGetIntegerv(object->texture_bind_target, &prev_binded_texture);
2996
2997         /* Switch to our pbuffer */
2998         pglXMakeCurrent(gdi_display, object->drawable, tmp_context);
2999
3000         /* Make sure that the prev_binded_texture is set as the current texture state isn't shared between contexts.
3001          * After that upload the pbuffer texture data. */
3002         pglBindTexture(object->texture_target, prev_binded_texture);
3003         pglCopyTexImage2D(object->texture_target, 0, object->use_render_texture, 0, 0, object->width, object->height, 0);
3004
3005         /* Switch back to the original drawable and upload the pbuffer-texture */
3006         pglXMakeCurrent(object->display, prev_drawable, prev_context);
3007         pglXDestroyContext(gdi_display, tmp_context);
3008         wine_tsx11_unlock();
3009         return GL_TRUE;
3010     }
3011
3012     if (NULL != pglXBindTexImageATI) {
3013         int buffer;
3014
3015         switch(iBuffer)
3016         {
3017             case WGL_FRONT_LEFT_ARB:
3018                 buffer = GLX_FRONT_LEFT_ATI;
3019                 break;
3020             case WGL_FRONT_RIGHT_ARB:
3021                 buffer = GLX_FRONT_RIGHT_ATI;
3022                 break;
3023             case WGL_BACK_LEFT_ARB:
3024                 buffer = GLX_BACK_LEFT_ATI;
3025                 break;
3026             case WGL_BACK_RIGHT_ARB:
3027                 buffer = GLX_BACK_RIGHT_ATI;
3028                 break;
3029             default:
3030                 ERR("Unknown iBuffer=%#x\n", iBuffer);
3031                 return FALSE;
3032         }
3033
3034         /* In the sample 'ogl_offscreen_rendering_3' from codesampler.net I get garbage on the screen.
3035          * I'm not sure if that's a bug in the ATI extension or in the program. I think that the program
3036          * expected a single buffering format since it didn't ask for double buffering. A buffer swap
3037          * fixed the program. I don't know what the correct behavior is. On the other hand that demo
3038          * works fine using our pbuffer emulation path.
3039          */
3040         wine_tsx11_lock();
3041         ret = pglXBindTexImageATI(object->display, object->drawable, buffer);
3042         wine_tsx11_unlock();
3043     }
3044     return ret;
3045 }
3046
3047 /**
3048  * X11DRV_wglReleaseTexImageARB
3049  *
3050  * WGL_ARB_render_texture: wglReleaseTexImageARB
3051  */
3052 static GLboolean WINAPI X11DRV_wglReleaseTexImageARB(HPBUFFERARB hPbuffer, int iBuffer)
3053 {
3054     Wine_GLPBuffer* object = hPbuffer;
3055     GLboolean ret = GL_FALSE;
3056
3057     TRACE("(%p, %d)\n", hPbuffer, iBuffer);
3058     if (NULL == object) {
3059         SetLastError(ERROR_INVALID_HANDLE);
3060         return GL_FALSE;
3061     }
3062     if (!object->use_render_texture) {
3063         SetLastError(ERROR_INVALID_HANDLE);
3064         return GL_FALSE;
3065     }
3066     if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
3067         return GL_TRUE;
3068     }
3069     if (NULL != pglXReleaseTexImageATI) {
3070         int buffer;
3071
3072         switch(iBuffer)
3073         {
3074             case WGL_FRONT_LEFT_ARB:
3075                 buffer = GLX_FRONT_LEFT_ATI;
3076                 break;
3077             case WGL_FRONT_RIGHT_ARB:
3078                 buffer = GLX_FRONT_RIGHT_ATI;
3079                 break;
3080             case WGL_BACK_LEFT_ARB:
3081                 buffer = GLX_BACK_LEFT_ATI;
3082                 break;
3083             case WGL_BACK_RIGHT_ARB:
3084                 buffer = GLX_BACK_RIGHT_ATI;
3085                 break;
3086             default:
3087                 ERR("Unknown iBuffer=%#x\n", iBuffer);
3088                 return FALSE;
3089         }
3090         wine_tsx11_lock();
3091         ret = pglXReleaseTexImageATI(object->display, object->drawable, buffer);
3092         wine_tsx11_unlock();
3093     }
3094     return ret;
3095 }
3096
3097 /**
3098  * X11DRV_wglGetExtensionsStringEXT
3099  *
3100  * WGL_EXT_extensions_string: wglGetExtensionsStringEXT
3101  */
3102 static const char * WINAPI X11DRV_wglGetExtensionsStringEXT(void) {
3103     TRACE("() returning \"%s\"\n", WineGLInfo.wglExtensions);
3104     return WineGLInfo.wglExtensions;
3105 }
3106
3107 /**
3108  * X11DRV_wglGetSwapIntervalEXT
3109  *
3110  * WGL_EXT_swap_control: wglGetSwapIntervalEXT
3111  */
3112 static int WINAPI X11DRV_wglGetSwapIntervalEXT(VOID) {
3113     FIXME("(),stub!\n");
3114     return swap_interval;
3115 }
3116
3117 /**
3118  * X11DRV_wglSwapIntervalEXT
3119  *
3120  * WGL_EXT_swap_control: wglSwapIntervalEXT
3121  */
3122 static BOOL WINAPI X11DRV_wglSwapIntervalEXT(int interval) {
3123     BOOL ret = TRUE;
3124
3125     TRACE("(%d)\n", interval);
3126     swap_interval = interval;
3127     if (NULL != pglXSwapIntervalSGI) {
3128         wine_tsx11_lock();
3129         ret = !pglXSwapIntervalSGI(interval);
3130         wine_tsx11_unlock();
3131     }
3132     else WARN("(): GLX_SGI_swap_control extension seems not supported\n");
3133     return ret;
3134 }
3135
3136 /**
3137  * X11DRV_wglAllocateMemoryNV
3138  *
3139  * WGL_NV_vertex_array_range: wglAllocateMemoryNV
3140  */
3141 static void* WINAPI X11DRV_wglAllocateMemoryNV(GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority) {
3142     void *ret = NULL;
3143     TRACE("(%d, %f, %f, %f)\n", size, readfreq, writefreq, priority );
3144
3145     if (pglXAllocateMemoryNV)
3146     {
3147         wine_tsx11_lock();
3148         ret = pglXAllocateMemoryNV(size, readfreq, writefreq, priority);
3149         wine_tsx11_unlock();
3150     }
3151     return ret;
3152 }
3153
3154 /**
3155  * X11DRV_wglFreeMemoryNV
3156  *
3157  * WGL_NV_vertex_array_range: wglFreeMemoryNV
3158  */
3159 static void WINAPI X11DRV_wglFreeMemoryNV(GLvoid* pointer) {
3160     TRACE("(%p)\n", pointer);
3161     if (pglXFreeMemoryNV == NULL)
3162         return;
3163
3164     wine_tsx11_lock();
3165     pglXFreeMemoryNV(pointer);
3166     wine_tsx11_unlock();
3167 }
3168
3169 /**
3170  * X11DRV_wglSetPixelFormatWINE
3171  *
3172  * WGL_WINE_pixel_format_passthrough: wglSetPixelFormatWINE
3173  * This is a WINE-specific wglSetPixelFormat which can set the pixel format multiple times.
3174  */
3175 BOOL CDECL X11DRV_wglSetPixelFormatWINE(X11DRV_PDEVICE *physDev, int iPixelFormat, const PIXELFORMATDESCRIPTOR *ppfd)
3176 {
3177     TRACE("(%p,%d,%p)\n", physDev, iPixelFormat, ppfd);
3178
3179     if (!has_opengl()) return FALSE;
3180
3181     if (physDev->current_pf == iPixelFormat) return TRUE;
3182
3183     /* Relay to the core SetPixelFormat */
3184     TRACE("Changing iPixelFormat from %d to %d\n", physDev->current_pf, iPixelFormat);
3185     return internal_SetPixelFormat(physDev, iPixelFormat, ppfd);
3186 }
3187
3188 /**
3189  * glxRequireVersion (internal)
3190  *
3191  * Check if the supported GLX version matches requiredVersion.
3192  */
3193 static BOOL glxRequireVersion(int requiredVersion)
3194 {
3195     /* Both requiredVersion and glXVersion[1] contains the minor GLX version */
3196     if(requiredVersion <= WineGLInfo.glxVersion[1])
3197         return TRUE;
3198
3199     return FALSE;
3200 }
3201
3202 static BOOL glxRequireExtension(const char *requiredExtension)
3203 {
3204     if (strstr(WineGLInfo.glxExtensions, requiredExtension) == NULL) {
3205         return FALSE;
3206     }
3207
3208     return TRUE;
3209 }
3210
3211 static void register_extension_string(const char *ext)
3212 {
3213     if (WineGLInfo.wglExtensions[0])
3214         strcat(WineGLInfo.wglExtensions, " ");
3215     strcat(WineGLInfo.wglExtensions, ext);
3216
3217     TRACE("'%s'\n", ext);
3218 }
3219
3220 static BOOL register_extension(const WineGLExtension * ext)
3221 {
3222     int i;
3223
3224     assert( WineGLExtensionListSize < MAX_EXTENSIONS );
3225     WineGLExtensionList[WineGLExtensionListSize++] = ext;
3226
3227     register_extension_string(ext->extName);
3228
3229     for (i = 0; ext->extEntryPoints[i].funcName; ++i)
3230         TRACE("    - '%s'\n", ext->extEntryPoints[i].funcName);
3231
3232     return TRUE;
3233 }
3234
3235 static const WineGLExtension WGL_internal_functions =
3236 {
3237   "",
3238   {
3239     { "wglGetIntegerv", X11DRV_wglGetIntegerv },
3240     { "wglFinish", X11DRV_wglFinish },
3241     { "wglFlush", X11DRV_wglFlush },
3242   }
3243 };
3244
3245
3246 static const WineGLExtension WGL_ARB_extensions_string =
3247 {
3248   "WGL_ARB_extensions_string",
3249   {
3250     { "wglGetExtensionsStringARB", X11DRV_wglGetExtensionsStringARB },
3251   }
3252 };
3253
3254 static const WineGLExtension WGL_ARB_make_current_read =
3255 {
3256   "WGL_ARB_make_current_read",
3257   {
3258     { "wglGetCurrentReadDCARB", X11DRV_wglGetCurrentReadDCARB },
3259     { "wglMakeContextCurrentARB", X11DRV_wglMakeContextCurrentARB },
3260   }
3261 };
3262
3263 static const WineGLExtension WGL_ARB_multisample =
3264 {
3265   "WGL_ARB_multisample",
3266 };
3267
3268 static const WineGLExtension WGL_ARB_pbuffer =
3269 {
3270   "WGL_ARB_pbuffer",
3271   {
3272     { "wglCreatePbufferARB", X11DRV_wglCreatePbufferARB },
3273     { "wglDestroyPbufferARB", X11DRV_wglDestroyPbufferARB },
3274     { "wglGetPbufferDCARB", X11DRV_wglGetPbufferDCARB },
3275     { "wglQueryPbufferARB", X11DRV_wglQueryPbufferARB },
3276     { "wglReleasePbufferDCARB", X11DRV_wglReleasePbufferDCARB },
3277     { "wglSetPbufferAttribARB", X11DRV_wglSetPbufferAttribARB },
3278   }
3279 };
3280
3281 static const WineGLExtension WGL_ARB_pixel_format =
3282 {
3283   "WGL_ARB_pixel_format",
3284   {
3285     { "wglChoosePixelFormatARB", X11DRV_wglChoosePixelFormatARB },
3286     { "wglGetPixelFormatAttribfvARB", X11DRV_wglGetPixelFormatAttribfvARB },
3287     { "wglGetPixelFormatAttribivARB", X11DRV_wglGetPixelFormatAttribivARB },
3288   }
3289 };
3290
3291 static const WineGLExtension WGL_ARB_render_texture =
3292 {
3293   "WGL_ARB_render_texture",
3294   {
3295     { "wglBindTexImageARB", X11DRV_wglBindTexImageARB },
3296     { "wglReleaseTexImageARB", X11DRV_wglReleaseTexImageARB },
3297   }
3298 };
3299
3300 static const WineGLExtension WGL_EXT_extensions_string =
3301 {
3302   "WGL_EXT_extensions_string",
3303   {
3304     { "wglGetExtensionsStringEXT", X11DRV_wglGetExtensionsStringEXT },
3305   }
3306 };
3307
3308 static const WineGLExtension WGL_EXT_swap_control =
3309 {
3310   "WGL_EXT_swap_control",
3311   {
3312     { "wglSwapIntervalEXT", X11DRV_wglSwapIntervalEXT },
3313     { "wglGetSwapIntervalEXT", X11DRV_wglGetSwapIntervalEXT },
3314   }
3315 };
3316
3317 static const WineGLExtension WGL_NV_vertex_array_range =
3318 {
3319   "WGL_NV_vertex_array_range",
3320   {
3321     { "wglAllocateMemoryNV", X11DRV_wglAllocateMemoryNV },
3322     { "wglFreeMemoryNV", X11DRV_wglFreeMemoryNV },
3323   }
3324 };
3325
3326 static const WineGLExtension WGL_WINE_pixel_format_passthrough =
3327 {
3328   "WGL_WINE_pixel_format_passthrough",
3329   {
3330     { "wglSetPixelFormatWINE", X11DRV_wglSetPixelFormatWINE },
3331   }
3332 };
3333
3334 /**
3335  * X11DRV_WineGL_LoadExtensions
3336  */
3337 static void X11DRV_WineGL_LoadExtensions(void)
3338 {
3339     WineGLInfo.wglExtensions[0] = 0;
3340
3341     /* Load Wine internal functions */
3342     register_extension(&WGL_internal_functions);
3343
3344     /* ARB Extensions */
3345
3346     if(glxRequireExtension("GLX_ARB_fbconfig_float"))
3347     {
3348         register_extension_string("WGL_ARB_pixel_format_float");
3349         register_extension_string("WGL_ATI_pixel_format_float");
3350     }
3351
3352     register_extension(&WGL_ARB_extensions_string);
3353
3354     if (glxRequireVersion(3))
3355         register_extension(&WGL_ARB_make_current_read);
3356
3357     if (glxRequireExtension("GLX_ARB_multisample"))
3358         register_extension(&WGL_ARB_multisample);
3359
3360     /* In general pbuffer functionality requires support in the X-server. The functionality is
3361      * available either when the GLX_SGIX_pbuffer is present or when the GLX server version is 1.3.
3362      * All display drivers except for Nvidia's use the GLX module from Xfree86/Xorg which only
3363      * supports GLX 1.2. The endresult is that only Nvidia's drivers support pbuffers.
3364      *
3365      * The only other drive which has pbuffer support is Ati's FGLRX driver. They provide clientside GLX 1.3 support
3366      * without support in the X-server (which other Mesa based drivers require).
3367      *
3368      * Support pbuffers when the GLX version is 1.3 and GLX_SGIX_pbuffer is available. Further pbuffers can
3369      * also be supported when GLX_ATI_render_texture is available. This extension depends on pbuffers, so when it
3370      * is available pbuffers must be available too. */
3371     if ( (glxRequireVersion(3) && glxRequireExtension("GLX_SGIX_pbuffer")) || glxRequireExtension("GLX_ATI_render_texture"))
3372         register_extension(&WGL_ARB_pbuffer);
3373
3374     register_extension(&WGL_ARB_pixel_format);
3375
3376     /* Support WGL_ARB_render_texture when there's support or pbuffer based emulation */
3377     if (glxRequireExtension("GLX_ATI_render_texture") ||
3378         glxRequireExtension("GLX_ARB_render_texture") ||
3379         (glxRequireVersion(3) && glxRequireExtension("GLX_SGIX_pbuffer") && use_render_texture_emulation))
3380     {
3381         register_extension(&WGL_ARB_render_texture);
3382
3383         /* The WGL version of GLX_NV_float_buffer requires render_texture */
3384         if(glxRequireExtension("GLX_NV_float_buffer"))
3385             register_extension_string("WGL_NV_float_buffer");
3386
3387         /* Again there's no GLX equivalent for this extension, so depend on the required GL extension */
3388         if(strstr(WineGLInfo.glExtensions, "GL_NV_texture_rectangle") != NULL)
3389             register_extension_string("WGL_NV_texture_rectangle");
3390     }
3391
3392     /* EXT Extensions */
3393
3394     register_extension(&WGL_EXT_extensions_string);
3395
3396     /* Load this extension even when it isn't backed by a GLX extension because it is has been around for ages.
3397      * Games like Call of Duty and K.O.T.O.R. rely on it. Further our emulation is good enough. */
3398     register_extension(&WGL_EXT_swap_control);
3399
3400     if(glxRequireExtension("GLX_EXT_framebuffer_sRGB"))
3401         register_extension_string("WGL_EXT_framebuffer_sRGB");
3402
3403     /* The OpenGL extension GL_NV_vertex_array_range adds wgl/glX functions which aren't exported as 'real' wgl/glX extensions. */
3404     if(strstr(WineGLInfo.glExtensions, "GL_NV_vertex_array_range") != NULL)
3405         register_extension(&WGL_NV_vertex_array_range);
3406
3407     /* WINE-specific WGL Extensions */
3408
3409     /* In WineD3D we need the ability to set the pixel format more than once (e.g. after a device reset).
3410      * The default wglSetPixelFormat doesn't allow this, so add our own which allows it.
3411      */
3412     register_extension(&WGL_WINE_pixel_format_passthrough);
3413 }
3414
3415
3416 Drawable get_glxdrawable(X11DRV_PDEVICE *physDev)
3417 {
3418     Drawable ret;
3419
3420     if(physDev->bitmap)
3421     {
3422         if (physDev->bitmap->hbitmap == BITMAP_stock_phys_bitmap.hbitmap)
3423             ret = physDev->drawable; /* PBuffer */
3424         else
3425             ret = physDev->bitmap->glxpixmap;
3426     }
3427     else if(physDev->gl_drawable)
3428         ret = physDev->gl_drawable;
3429     else
3430         ret = physDev->drawable;
3431     return ret;
3432 }
3433
3434 BOOL destroy_glxpixmap(Display *display, XID glxpixmap)
3435 {
3436     wine_tsx11_lock();
3437     pglXDestroyGLXPixmap(display, glxpixmap);
3438     wine_tsx11_unlock();
3439     return TRUE;
3440 }
3441
3442 /**
3443  * X11DRV_SwapBuffers
3444  *
3445  * Swap the buffers of this DC
3446  */
3447 BOOL CDECL X11DRV_SwapBuffers(X11DRV_PDEVICE *physDev)
3448 {
3449   GLXDrawable drawable;
3450   Wine_GLContext *ctx = NtCurrentTeb()->glContext;
3451
3452   if (!has_opengl()) return FALSE;
3453
3454   TRACE("(%p)\n", physDev);
3455
3456   drawable = get_glxdrawable(physDev);
3457
3458   wine_tsx11_lock();
3459   sync_context(ctx);
3460   if(physDev->pixmap) {
3461       if(pglXCopySubBufferMESA) {
3462           int w = physDev->dc_rect.right - physDev->dc_rect.left;
3463           int h = physDev->dc_rect.bottom - physDev->dc_rect.top;
3464
3465           /* (glX)SwapBuffers has an implicit glFlush effect, however
3466            * GLX_MESA_copy_sub_buffer doesn't. Make sure GL is flushed before
3467            * copying */
3468           pglFlush();
3469           if(w > 0 && h > 0)
3470               pglXCopySubBufferMESA(gdi_display, drawable, 0, 0, w, h);
3471       }
3472       else
3473           pglXSwapBuffers(gdi_display, drawable);
3474   }
3475   else
3476       pglXSwapBuffers(gdi_display, drawable);
3477
3478   flush_gl_drawable(physDev);
3479   wine_tsx11_unlock();
3480
3481   /* FPS support */
3482   if (TRACE_ON(fps))
3483   {
3484       static long prev_time, start_time;
3485       static unsigned long frames, frames_total;
3486
3487       DWORD time = GetTickCount();
3488       frames++;
3489       frames_total++;
3490       /* every 1.5 seconds */
3491       if (time - prev_time > 1500) {
3492           TRACE_(fps)("@ approx %.2ffps, total %.2ffps\n",
3493                       1000.0*frames/(time - prev_time), 1000.0*frames_total/(time - start_time));
3494           prev_time = time;
3495           frames = 0;
3496           if(start_time == 0) start_time = time;
3497       }
3498   }
3499
3500   return TRUE;
3501 }
3502
3503 XVisualInfo *visual_from_fbconfig_id( XID fbconfig_id )
3504 {
3505     WineGLPixelFormat *fmt;
3506     XVisualInfo *ret;
3507
3508     fmt = ConvertPixelFormatGLXtoWGL(gdi_display, fbconfig_id);
3509     if(fmt == NULL)
3510         return NULL;
3511
3512     wine_tsx11_lock();
3513     ret = pglXGetVisualFromFBConfig(gdi_display, fmt->fbconfig);
3514     wine_tsx11_unlock();
3515     return ret;
3516 }
3517
3518 #else  /* no OpenGL includes */
3519
3520 static inline void opengl_error(void)
3521 {
3522     static int warned;
3523     if (!warned++) ERR("No OpenGL support compiled in.\n");
3524 }
3525
3526 int pixelformat_from_fbconfig_id(XID fbconfig_id)
3527 {
3528     return 0;
3529 }
3530
3531 void mark_drawable_dirty(Drawable old, Drawable new)
3532 {
3533 }
3534
3535 void flush_gl_drawable(X11DRV_PDEVICE *physDev)
3536 {
3537 }
3538
3539 Drawable create_glxpixmap(Display *display, XVisualInfo *vis, Pixmap parent)
3540 {
3541     return 0;
3542 }
3543
3544 /***********************************************************************
3545  *              ChoosePixelFormat (X11DRV.@)
3546  */
3547 int CDECL X11DRV_ChoosePixelFormat(X11DRV_PDEVICE *physDev,
3548                                      const PIXELFORMATDESCRIPTOR *ppfd) {
3549   opengl_error();
3550   return 0;
3551 }
3552
3553 /***********************************************************************
3554  *              DescribePixelFormat (X11DRV.@)
3555  */
3556 int CDECL X11DRV_DescribePixelFormat(X11DRV_PDEVICE *physDev,
3557                                      int iPixelFormat,
3558                                      UINT nBytes,
3559                                      PIXELFORMATDESCRIPTOR *ppfd) {
3560   opengl_error();
3561   return 0;
3562 }
3563
3564 /***********************************************************************
3565  *              GetPixelFormat (X11DRV.@)
3566  */
3567 int CDECL X11DRV_GetPixelFormat(X11DRV_PDEVICE *physDev) {
3568   opengl_error();
3569   return 0;
3570 }
3571
3572 /***********************************************************************
3573  *              SetPixelFormat (X11DRV.@)
3574  */
3575 BOOL CDECL X11DRV_SetPixelFormat(X11DRV_PDEVICE *physDev,
3576                                    int iPixelFormat,
3577                                    const PIXELFORMATDESCRIPTOR *ppfd) {
3578   opengl_error();
3579   return FALSE;
3580 }
3581
3582 /***********************************************************************
3583  *              SwapBuffers (X11DRV.@)
3584  */
3585 BOOL CDECL X11DRV_SwapBuffers(X11DRV_PDEVICE *physDev) {
3586   opengl_error();
3587   return FALSE;
3588 }
3589
3590 /**
3591  * X11DRV_wglCopyContext
3592  *
3593  * For OpenGL32 wglCopyContext.
3594  */
3595 BOOL CDECL X11DRV_wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask) {
3596     opengl_error();
3597     return FALSE;
3598 }
3599
3600 /**
3601  * X11DRV_wglCreateContext
3602  *
3603  * For OpenGL32 wglCreateContext.
3604  */
3605 HGLRC CDECL X11DRV_wglCreateContext(X11DRV_PDEVICE *physDev) {
3606     opengl_error();
3607     return NULL;
3608 }
3609
3610 /**
3611  * X11DRV_wglDeleteContext
3612  *
3613  * For OpenGL32 wglDeleteContext.
3614  */
3615 BOOL CDECL X11DRV_wglDeleteContext(HGLRC hglrc) {
3616     opengl_error();
3617     return FALSE;
3618 }
3619
3620 /**
3621  * X11DRV_wglGetProcAddress
3622  *
3623  * For OpenGL32 wglGetProcAddress.
3624  */
3625 PROC CDECL X11DRV_wglGetProcAddress(LPCSTR lpszProc) {
3626     opengl_error();
3627     return NULL;
3628 }
3629
3630 HDC CDECL X11DRV_wglGetPbufferDCARB(X11DRV_PDEVICE *hDevice, void *hPbuffer)
3631 {
3632     opengl_error();
3633     return NULL;
3634 }
3635
3636 BOOL CDECL X11DRV_wglMakeContextCurrentARB(X11DRV_PDEVICE* hDrawDev, X11DRV_PDEVICE* hReadDev, HGLRC hglrc) {
3637     opengl_error();
3638     return FALSE;
3639 }
3640
3641 /**
3642  * X11DRV_wglMakeCurrent
3643  *
3644  * For OpenGL32 wglMakeCurrent.
3645  */
3646 BOOL CDECL X11DRV_wglMakeCurrent(X11DRV_PDEVICE *physDev, HGLRC hglrc) {
3647     opengl_error();
3648     return FALSE;
3649 }
3650
3651 /**
3652  * X11DRV_wglShareLists
3653  *
3654  * For OpenGL32 wglShareLists.
3655  */
3656 BOOL CDECL X11DRV_wglShareLists(HGLRC hglrc1, HGLRC hglrc2) {
3657     opengl_error();
3658     return FALSE;
3659 }
3660
3661 /**
3662  * X11DRV_wglUseFontBitmapsA
3663  *
3664  * For OpenGL32 wglUseFontBitmapsA.
3665  */
3666 BOOL CDECL X11DRV_wglUseFontBitmapsA(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
3667 {
3668     opengl_error();
3669     return FALSE;
3670 }
3671
3672 /**
3673  * X11DRV_wglUseFontBitmapsW
3674  *
3675  * For OpenGL32 wglUseFontBitmapsW.
3676  */
3677 BOOL CDECL X11DRV_wglUseFontBitmapsW(X11DRV_PDEVICE *physDev, DWORD first, DWORD count, DWORD listBase)
3678 {
3679     opengl_error();
3680     return FALSE;
3681 }
3682
3683 /**
3684  * X11DRV_wglSetPixelFormatWINE
3685  *
3686  * WGL_WINE_pixel_format_passthrough: wglSetPixelFormatWINE
3687  * This is a WINE-specific wglSetPixelFormat which can set the pixel format multiple times.
3688  */
3689 BOOL CDECL X11DRV_wglSetPixelFormatWINE(X11DRV_PDEVICE *physDev, int iPixelFormat, const PIXELFORMATDESCRIPTOR *ppfd)
3690 {
3691     opengl_error();
3692     return FALSE;
3693 }
3694
3695 Drawable get_glxdrawable(X11DRV_PDEVICE *physDev)
3696 {
3697     return 0;
3698 }
3699
3700 BOOL destroy_glxpixmap(Display *display, XID glxpixmap)
3701 {
3702     return FALSE;
3703 }
3704
3705 XVisualInfo *visual_from_fbconfig_id( XID fbconfig_id )
3706 {
3707     return NULL;
3708 }
3709
3710 #endif /* defined(HAVE_OPENGL) */