dlls/opengl32/wgl_ext.c

   1 /* Support for window-specific OpenGL extensions.
   2  *
   3  * Copyright (c) 2004 Lionel Ulmer
   4  * Copyright (c) 2005 Alex Woods
   5  * Copyright (c) 2005 Raphael Junqueira
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winuser.h"
  32 #include "winerror.h"
  33
  34 #include "gdi.h"
  35 #include "wgl_ext.h"
  36 #include "opengl_ext.h"
  37 #include "wine/library.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(wgl);
  41
  42
  43 /* x11drv GDI escapes */
  44 #define X11DRV_ESCAPE 6789
  45 enum x11drv_escape_codes
  46 {
  47     X11DRV_GET_DISPLAY,   /* get X11 display for a DC */
  48     X11DRV_GET_DRAWABLE,  /* get current drawable for a DC */
  49     X11DRV_GET_FONT,      /* get current X font for a DC */
  50     X11DRV_SET_DRAWABLE,     /* set current drawable for a DC */
  51 };
  52 struct x11drv_escape_set_drawable
  53 {
  54     enum x11drv_escape_codes code;         /* escape code (X11DRV_SET_DRAWABLE) */
  55     Drawable                 drawable;     /* X drawable */
  56     int                      mode;         /* ClipByChildren or IncludeInferiors */
  57     POINT                    org;          /* origin of DC relative to drawable */
  58     POINT                    drawable_org; /* origin of drawable relative to screen */
  59 };
  60
  61 /* retrieve the X display to use on a given DC */
  62 inline static Display *get_display( HDC hdc )
  63 {
  64     Display *display;
  65     enum x11drv_escape_codes escape = X11DRV_GET_DISPLAY;
  66
  67     if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape,
  68                     sizeof(display), (LPSTR)&display )) display = NULL;
  69     return display;
  70 }
  71 inline static void set_drawable( HDC hdc, Drawable drawable )
  72 {
  73     struct x11drv_escape_set_drawable escape;
  74
  75     escape.code = X11DRV_SET_DRAWABLE;
  76     escape.drawable = drawable;
  77     escape.mode = IncludeInferiors;
  78     escape.org.x = escape.org.y = 0;
  79     escape.drawable_org.x = escape.drawable_org.y = 0;
  80
  81     ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL );
  82 }
  83
  84 /* Some WGL extensions... */
  85 static const char *WGL_extensions_base = "WGL_ARB_extensions_string WGL_EXT_extensions_string";
  86 static char *WGL_extensions = NULL;
  87
  88 /**
  89  * Extensions-query functions
  90  *
  91  * @TODO: use a struct to handle parameters
  92  */
  93 static BOOL query_function_make_current_read(glXGetProcAddressARB_t proc, const char *gl_version, const char *gl_extensions,
  94                                       const char* glx_version, const char *glx_extensions,
  95                                       const char *server_glx_extensions, const char *client_glx_extensions)
  96 {
  97   return 0 <= strcmp("1.3", glx_version);
  98 }
  99
 100 static BOOL query_function_multisample(glXGetProcAddressARB_t proc, const char *gl_version, const char *gl_extensions,
 101                                 const char* glx_version, const char *glx_extensions,
 102                                 const char *server_glx_extensions, const char *client_glx_extensions)
 103 {
 104   return NULL != strstr(glx_extensions, "GLX_ARB_multisample");
 105 }
 106
 107 static BOOL query_function_pbuffer(glXGetProcAddressARB_t proc, const char *gl_version, const char *gl_extensions,
 108                             const char* glx_version, const char *glx_extensions,
 109                             const char *server_glx_extensions, const char *client_glx_extensions)
 110 {
 111   TRACE("gl_version is: \"%s\"\n", gl_version);
 112   TRACE("glx_exts is: \"%s\"\n", glx_extensions);
 113
 114   return 0 <= strcmp("1.3", glx_version) || NULL != strstr(glx_extensions, "GLX_SGIX_pbuffer");
 115 }
 116
 117 static BOOL query_function_pixel_format(glXGetProcAddressARB_t proc, const char *gl_version, const char *gl_extensions,
 118                                  const char* glx_version, const char *glx_extensions,
 119                                  const char *server_glx_extensions, const char *client_glx_extensions)
 120 {
 121   return TRUE;
 122 }
 123
 124 /** GLX_ARB_render_texture */
 125 /**
 126  * http://oss.sgi.com/projects/ogl-sample/registry/ARB/wgl_render_texture.txt
 127  * ~/tmp/ogl/ogl_offscreen_rendering_3
 128  */
 129 static Bool (*p_glXBindTexImageARB)(Display *dpy, GLXPbuffer pbuffer, int buffer);
 130 static Bool (*p_glXReleaseTexImageARB)(Display *dpy, GLXPbuffer pbuffer, int buffer);
 131 static Bool (*p_glXDrawableAttribARB)(Display *dpy, GLXDrawable draw, const int *attribList);
 132 static int  use_render_texture_emulation = 0;
 133 static int  use_render_texture_ati = 0;
 134 static BOOL query_function_render_texture(glXGetProcAddressARB_t proc, const char *gl_version, const char *gl_extensions,
 135                                    const char* glx_version, const char *glx_extensions,
 136                                    const char *server_glx_extensions, const char *client_glx_extensions)
 137 {
 138   BOOL bTest = FALSE;
 139   if (NULL != strstr(glx_extensions, "GLX_ATI_render_texture")) {
 140     p_glXBindTexImageARB = proc( (const GLubyte *) "glXBindTexImageARB");
 141     p_glXReleaseTexImageARB = proc( (const GLubyte *) "glXReleaseTexImageARB");
 142     p_glXDrawableAttribARB = proc( (const GLubyte *) "glXDrawableAttribARB");
 143     bTest = (NULL != p_glXBindTexImageARB && NULL != p_glXReleaseTexImageARB && NULL != p_glXDrawableAttribARB);
 144   }
 145   if (bTest) {
 146     TRACE("Active WGL_render_texture: found GLX_ATI_render_texture extensions\n");
 147     use_render_texture_ati = 1;
 148     return bTest;
 149   }
 150   bTest = (0 <= strcmp("1.3", glx_version) || NULL != strstr(glx_extensions, "GLX_SGIX_pbuffer"));
 151   if (bTest) {
 152     if (NULL != strstr(glx_extensions, "GLX_ARB_render_texture")) {
 153       p_glXBindTexImageARB = proc( (const GLubyte *) "glXBindTexImageARB");
 154       p_glXReleaseTexImageARB = proc( (const GLubyte *) "glXReleaseTexImageARB");
 155       p_glXDrawableAttribARB = proc( (const GLubyte *) "glXDrawableAttribARB");
 156       TRACE("glXBindTexImageARB found as %p\n", p_glXBindTexImageARB);
 157       TRACE("glXReleaseTexImageARB found as %p\n", p_glXReleaseTexImageARB);
 158       TRACE("glXDrawableAttribARB found as %p\n", p_glXDrawableAttribARB);
 159       bTest = (NULL != p_glXBindTexImageARB && NULL != p_glXReleaseTexImageARB && NULL != p_glXDrawableAttribARB);
 160     } else {
 161       TRACE("Active WGL_render_texture: emulation using pbuffers\n");
 162       use_render_texture_emulation = 1;
 163     }
 164   }
 165   return bTest;
 166 }
 167
 168 static int (*p_glXSwapIntervalSGI)(int);
 169 static BOOL query_function_swap_control(glXGetProcAddressARB_t proc, const char *gl_version, const char *gl_extensions,
 170                                  const char* glx_version, const char *glx_extensions,
 171                                  const char *server_glx_extensions, const char *client_glx_extensions)
 172 {
 173   BOOL bTest = (0 <= strcmp("1.3", glx_version) || NULL != strstr(glx_extensions, "GLX_SGI_swap_control"));
 174   if (bTest) {
 175     p_glXSwapIntervalSGI = proc( (const GLubyte *) "glXSwapIntervalSGI");
 176     bTest = (NULL != p_glXSwapIntervalSGI);
 177   }
 178   return bTest;
 179 }
 180
 181 /***********************************************************************
 182  *              wglGetExtensionsStringEXT(OPENGL32.@)
 183  */
 184 const char * WINAPI wglGetExtensionsStringEXT(void) {
 185     TRACE("() returning \"%s\"\n", WGL_extensions);
 186
 187     return WGL_extensions;
 188 }
 189
 190 /***********************************************************************
 191  *              wglGetExtensionsStringARB(OPENGL32.@)
 192  */
 193 const char * WINAPI wglGetExtensionsStringARB(HDC hdc) {
 194     TRACE("() returning \"%s\"\n", WGL_extensions);
 195
 196     return WGL_extensions;
 197 }
 198
 199 static int swap_interval = 1;
 200
 201 /***********************************************************************
 202  *              wglSwapIntervalEXT(OPENGL32.@)
 203  */
 204 BOOL WINAPI wglSwapIntervalEXT(int interval) {
 205   TRACE("(%d)\n", interval);
 206   swap_interval = interval;
 207   if (NULL != p_glXSwapIntervalSGI) {
 208     return 0 == p_glXSwapIntervalSGI(interval);
 209   }
 210   WARN("(): GLX_SGI_swap_control extension seems not supported\n");
 211   return TRUE;
 212 }
 213
 214 /***********************************************************************
 215  *              wglGetSwapIntervalEXT(OPENGL32.@)
 216  */
 217 int WINAPI wglGetSwapIntervalEXT(VOID) {
 218     FIXME("(),stub!\n");
 219     return swap_interval;
 220 }
 221
 222 typedef struct wine_glpbuffer {
 223   Drawable   drawable;
 224   Display*   display;
 225   int        pixelFormat;
 226   int        width;
 227   int        height;
 228   int*       attribList;
 229   HDC        hdc;
 230
 231   int        use_render_texture;
 232   GLuint     texture_target;
 233   GLuint     texture_bind_target;
 234   GLuint     texture;
 235   int        texture_level;
 236   HDC        prev_hdc;
 237   HGLRC      prev_ctx;
 238   HDC        render_hdc;
 239   HGLRC      render_ctx;
 240 } Wine_GLPBuffer;
 241
 242 #define PUSH1(attribs,att)        attribs[nAttribs++] = (att);
 243 #define PUSH2(attribs,att,value)  attribs[nAttribs++] = (att); attribs[nAttribs++] = (value);
 244
 245 #define WGL_NUMBER_PIXEL_FORMATS_ARB            0x2000
 246 #define WGL_DRAW_TO_WINDOW_ARB                  0x2001
 247 #define WGL_DRAW_TO_BITMAP_ARB                  0x2002
 248 #define WGL_ACCELERATION_ARB                    0x2003
 249 #define WGL_NEED_PALETTE_ARB                    0x2004
 250 #define WGL_NEED_SYSTEM_PALETTE_ARB             0x2005
 251 #define WGL_SWAP_LAYER_BUFFERS_ARB              0x2006
 252 #define WGL_SWAP_METHOD_ARB                     0x2007
 253 #define WGL_NUMBER_OVERLAYS_ARB                 0x2008
 254 #define WGL_NUMBER_UNDERLAYS_ARB                0x2009
 255 #define WGL_TRANSPARENT_ARB                     0x200A
 256 #define WGL_TRANSPARENT_RED_VALUE_ARB           0x2037
 257 #define WGL_TRANSPARENT_GREEN_VALUE_ARB         0x2038
 258 #define WGL_TRANSPARENT_BLUE_VALUE_ARB          0x2039
 259 #define WGL_TRANSPARENT_ALPHA_VALUE_ARB         0x203A
 260 #define WGL_TRANSPARENT_INDEX_VALUE_ARB         0x203B
 261 #define WGL_SHARE_DEPTH_ARB                     0x200C
 262 #define WGL_SHARE_STENCIL_ARB                   0x200D
 263 #define WGL_SHARE_ACCUM_ARB                     0x200E
 264 #define WGL_SUPPORT_GDI_ARB                     0x200F
 265 #define WGL_SUPPORT_OPENGL_ARB                  0x2010
 266 #define WGL_DOUBLE_BUFFER_ARB                   0x2011
 267 #define WGL_STEREO_ARB                          0x2012
 268 #define WGL_PIXEL_TYPE_ARB                      0x2013
 269 #define WGL_COLOR_BITS_ARB                      0x2014
 270 #define WGL_RED_BITS_ARB                        0x2015
 271 #define WGL_RED_SHIFT_ARB                       0x2016
 272 #define WGL_GREEN_BITS_ARB                      0x2017
 273 #define WGL_GREEN_SHIFT_ARB                     0x2018
 274 #define WGL_BLUE_BITS_ARB                       0x2019
 275 #define WGL_BLUE_SHIFT_ARB                      0x201A
 276 #define WGL_ALPHA_BITS_ARB                      0x201B
 277 #define WGL_ALPHA_SHIFT_ARB                     0x201C
 278 #define WGL_ACCUM_BITS_ARB                      0x201D
 279 #define WGL_ACCUM_RED_BITS_ARB                  0x201E
 280 #define WGL_ACCUM_GREEN_BITS_ARB                0x201F
 281 #define WGL_ACCUM_BLUE_BITS_ARB                 0x2020
 282 #define WGL_ACCUM_ALPHA_BITS_ARB                0x2021
 283 #define WGL_DEPTH_BITS_ARB                      0x2022
 284 #define WGL_STENCIL_BITS_ARB                    0x2023
 285 #define WGL_AUX_BUFFERS_ARB                     0x2024
 286
 287 #define WGL_NO_ACCELERATION_ARB                 0x2025
 288 #define WGL_GENERIC_ACCELERATION_ARB            0x2026
 289 #define WGL_FULL_ACCELERATION_ARB               0x2027
 290
 291 #define WGL_PBUFFER_WIDTH_ARB                   0x2034
 292 #define WGL_PBUFFER_HEIGHT_ARB                  0x2035
 293 #define WGL_PBUFFER_LOST_ARB                    0x2036
 294 #define WGL_DRAW_TO_PBUFFER_ARB                 0x202D
 295 #define WGL_MAX_PBUFFER_PIXELS_ARB              0x202E
 296 #define WGL_MAX_PBUFFER_WIDTH_ARB               0x202F
 297 #define WGL_MAX_PBUFFER_HEIGHT_ARB              0x2030
 298 #define WGL_PBUFFER_LARGEST_ARB                 0x2033
 299
 300 #define WGL_TYPE_RGBA_ARB                       0x202B
 301 #define WGL_TYPE_COLORINDEX_ARB                 0x202C
 302
 303 #define WGL_SAMPLE_BUFFERS_ARB                  0x2041
 304 #define WGL_SAMPLES_ARB                         0x2042
 305
 306 /**
 307  * WGL_render_texture
 308  */
 309 /** GetPixelFormat/ChoosePixelFormat */
 310 #define WGL_BIND_TO_TEXTURE_RGB_ARB             0x2070
 311 #define WGL_BIND_TO_TEXTURE_RGBA_ARB            0x2071
 312 /** CreatePbuffer / QueryPbuffer */
 313 #define WGL_TEXTURE_FORMAT_ARB                  0x2072
 314 #define WGL_TEXTURE_TARGET_ARB                  0x2073
 315 #define WGL_MIPMAP_TEXTURE_ARB                  0x2074
 316 /** CreatePbuffer / QueryPbuffer */
 317 #define WGL_TEXTURE_RGB_ARB                     0x2075
 318 #define WGL_TEXTURE_RGBA_ARB                    0x2076
 319 #define WGL_NO_TEXTURE_ARB                      0x2077
 320 /** CreatePbuffer / QueryPbuffer */
 321 #define WGL_TEXTURE_CUBE_MAP_ARB                0x2078
 322 #define WGL_TEXTURE_1D_ARB                      0x2079
 323 #define WGL_TEXTURE_2D_ARB                      0x207A
 324 #define WGL_NO_TEXTURE_ARB                      0x2077
 325 /** SetPbufferAttribARB/QueryPbufferARB parameters */
 326 #define WGL_MIPMAP_LEVEL_ARB                    0x207B
 327 #define WGL_CUBE_MAP_FACE_ARB                   0x207C
 328 /** SetPbufferAttribARB/QueryPbufferARB attribs */
 329 #define WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB     0x207D
 330 #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB     0x207E
 331 #define WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB     0x207F
 332 #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB     0x2080
 333 #define WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB     0x2081
 334 #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB     0x2082
 335 /** BindTexImageARB/ReleaseTexImageARB */
 336 #define WGL_FRONT_LEFT_ARB                  0x2083
 337 #define WGL_FRONT_RIGHT_ARB                 0x2084
 338 #define WGL_BACK_LEFT_ARB                   0x2085
 339 #define WGL_BACK_RIGHT_ARB                  0x2086
 340 #define WGL_AUX0_ARB                        0x2087
 341 #define WGL_AUX1_ARB                        0x2088
 342 #define WGL_AUX2_ARB                        0x2089
 343 #define WGL_AUX3_ARB                        0x208A
 344 #define WGL_AUX4_ARB                        0x208B
 345 #define WGL_AUX5_ARB                        0x208C
 346 #define WGL_AUX6_ARB                        0x208D
 347 #define WGL_AUX7_ARB                        0x208E
 348 #define WGL_AUX8_ARB                        0x208F
 349 #define WGL_AUX9_ARB                        0x2090
 350
 351 /**
 352  * WGL_ATI_pixel_format_float / WGL_ARB_color_buffer_float
 353  */
 354 #define WGL_TYPE_RGBA_FLOAT_ATI             0x21A0
 355 #define GL_RGBA_FLOAT_MODE_ATI              0x8820
 356 #define GL_COLOR_CLEAR_UNCLAMPED_VALUE_ATI  0x8835
 357 #define GL_CLAMP_VERTEX_COLOR_ARB           0x891A
 358 #define GL_CLAMP_FRAGMENT_COLOR_ARB         0x891B
 359 #define GL_CLAMP_READ_COLOR_ARB             0x891C
 360 /** GLX_ATI_pixel_format_float */
 361 #define GLX_RGBA_FLOAT_ATI_BIT              0x00000100
 362 /** GLX_ARB_pixel_format_float */
 363 #define GLX_RGBA_FLOAT_BIT                  0x00000004
 364 #define GLX_RGBA_FLOAT_TYPE                 0x20B9
 365 /** GLX_ATI_render_texture */
 366 #define GLX_BIND_TO_TEXTURE_RGB_ATI         0x9800
 367 #define GLX_BIND_TO_TEXTURE_RGBA_ATI        0x9801
 368 #define GLX_TEXTURE_FORMAT_ATI              0x9802
 369 #define GLX_TEXTURE_TARGET_ATI              0x9803
 370 #define GLX_MIPMAP_TEXTURE_ATI              0x9804
 371 #define GLX_TEXTURE_RGB_ATI                 0x9805
 372 #define GLX_TEXTURE_RGBA_ATI                0x9806
 373 #define GLX_NO_TEXTURE_ATI                  0x9807
 374 #define GLX_TEXTURE_CUBE_MAP_ATI            0x9808
 375 #define GLX_TEXTURE_1D_ATI                  0x9809
 376 #define GLX_TEXTURE_2D_ATI                  0x980A
 377 #define GLX_MIPMAP_LEVEL_ATI                0x980B
 378 #define GLX_CUBE_MAP_FACE_ATI               0x980C
 379 #define GLX_TEXTURE_CUBE_MAP_POSITIVE_X_ATI 0x980D
 380 #define GLX_TEXTURE_CUBE_MAP_NEGATIVE_X_ATI 0x980E
 381 #define GLX_TEXTURE_CUBE_MAP_POSITIVE_Y_ATI 0x980F
 382 #define GLX_TEXTURE_CUBE_MAP_NEGATIVE_Y_ATI 0x9810
 383 #define GLX_TEXTURE_CUBE_MAP_POSITIVE_Z_ATI 0x9811
 384 #define GLX_TEXTURE_CUBE_MAP_NEGATIVE_Z_ATI 0x9812
 385 #define GLX_FRONT_LEFT_ATI                  0x9813
 386 #define GLX_FRONT_RIGHT_ATI                 0x9814
 387 #define GLX_BACK_LEFT_ATI                   0x9815
 388 #define GLX_BACK_RIGHT_ATI                  0x9816
 389 #define GLX_AUX0_ATI                        0x9817
 390 #define GLX_AUX1_ATI                        0x9818
 391 #define GLX_AUX2_ATI                        0x9819
 392 #define GLX_AUX3_ATI                        0x981A
 393 #define GLX_AUX4_ATI                        0x981B
 394 #define GLX_AUX5_ATI                        0x981C
 395 #define GLX_AUX6_ATI                        0x981D
 396 #define GLX_AUX7_ATI                        0x981E
 397 #define GLX_AUX8_ATI                        0x981F
 398 #define GLX_AUX9_ATI                        0x9820
 399 #define GLX_BIND_TO_TEXTURE_LUMINANCE_ATI   0x9821
 400 #define GLX_BIND_TO_TEXTURE_INTENSITY_ATI   0x9822
 401
 402
 403
 404 #if 0 /* not used yet */
 405 static int ConvertAttribGLXtoWGL(const int* iWGLAttr, int* oGLXAttr) {
 406   int nAttribs = 0;
 407   FIXME("not yet implemented!\n");
 408   return nAttribs;
 409 }
 410 #endif
 411
 412 static int ConvertAttribWGLtoGLX(const int* iWGLAttr, int* oGLXAttr, Wine_GLPBuffer* pbuf) {
 413   int nAttribs = 0;
 414   unsigned cur = 0;
 415   int pop;
 416   int isColor = 0;
 417   int wantColorBits = 0;
 418   int sz_alpha = 0;
 419
 420   while (0 != iWGLAttr[cur]) {
 421     TRACE("pAttr[%d] = %x\n", cur, iWGLAttr[cur]);
 422
 423     switch (iWGLAttr[cur]) {
 424     case WGL_COLOR_BITS_ARB:
 425       pop = iWGLAttr[++cur];
 426       wantColorBits = pop; /** see end */
 427       break;
 428     case WGL_BLUE_BITS_ARB:
 429       pop = iWGLAttr[++cur];
 430       PUSH2(oGLXAttr, GLX_BLUE_SIZE, pop);
 431       TRACE("pAttr[%d] = GLX_BLUE_SIZE: %d\n", cur, pop);
 432       break;
 433     case WGL_RED_BITS_ARB:
 434       pop = iWGLAttr[++cur];
 435       PUSH2(oGLXAttr, GLX_RED_SIZE, pop);
 436       TRACE("pAttr[%d] = GLX_RED_SIZE: %d\n", cur, pop);
 437       break;
 438     case WGL_GREEN_BITS_ARB:
 439       pop = iWGLAttr[++cur];
 440       PUSH2(oGLXAttr, GLX_GREEN_SIZE, pop);
 441       TRACE("pAttr[%d] = GLX_GREEN_SIZE: %d\n", cur, pop);
 442       break;
 443     case WGL_ALPHA_BITS_ARB:
 444       pop = iWGLAttr[++cur];
 445       sz_alpha = pop;
 446       PUSH2(oGLXAttr, GLX_ALPHA_SIZE, pop);
 447       TRACE("pAttr[%d] = GLX_ALPHA_SIZE: %d\n", cur, pop);
 448       break;
 449     case WGL_DEPTH_BITS_ARB:
 450       pop = iWGLAttr[++cur];
 451       PUSH2(oGLXAttr, GLX_DEPTH_SIZE, pop);
 452       TRACE("pAttr[%d] = GLX_DEPTH_SIZE: %d\n", cur, pop);
 453       break;
 454     case WGL_STENCIL_BITS_ARB:
 455       pop = iWGLAttr[++cur];
 456       PUSH2(oGLXAttr, GLX_STENCIL_SIZE, pop);
 457       TRACE("pAttr[%d] = GLX_STENCIL_SIZE: %d\n", cur, pop);
 458       break;
 459     case WGL_DOUBLE_BUFFER_ARB:
 460       pop = iWGLAttr[++cur];
 461       PUSH2(oGLXAttr, GLX_DOUBLEBUFFER, pop);
 462       TRACE("pAttr[%d] = GLX_DOUBLEBUFFER: %d\n", cur, pop);
 463       break;
 464
 465     case WGL_PIXEL_TYPE_ARB:
 466       pop = iWGLAttr[++cur];
 467       switch (pop) {
 468       case WGL_TYPE_COLORINDEX_ARB: pop = GLX_COLOR_INDEX_BIT; isColor = 1; break ;
 469       case WGL_TYPE_RGBA_ARB: pop = GLX_RGBA_BIT; break ;
 470       case WGL_TYPE_RGBA_FLOAT_ATI: pop = GLX_RGBA_FLOAT_ATI_BIT; break ;
 471       default:
 472         ERR("unexpected PixelType(%x)\n", pop);
 473         pop = 0;
 474       }
 475       PUSH2(oGLXAttr, GLX_RENDER_TYPE, pop);
 476       TRACE("pAttr[%d] = GLX_RENDER_TYPE: %d\n", cur, pop);
 477       break;
 478
 479     case WGL_SUPPORT_GDI_ARB:
 480       pop = iWGLAttr[++cur];
 481       PUSH2(oGLXAttr, GLX_X_RENDERABLE, pop);
 482       TRACE("pAttr[%d] = GLX_RENDERABLE: %d\n", cur, pop);
 483       break;
 484
 485     case WGL_DRAW_TO_BITMAP_ARB:
 486       pop = iWGLAttr[++cur];
 487       PUSH2(oGLXAttr, GLX_X_RENDERABLE, pop);
 488       TRACE("pAttr[%d] = GLX_RENDERABLE: %d\n", cur, pop);
 489       if (pop) {
 490         PUSH2(oGLXAttr, GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT);
 491         TRACE("pAttr[%d] = GLX_DRAWABLE_TYPE: GLX_PIXMAP_BIT\n", cur);
 492       }
 493       break;
 494
 495     case WGL_DRAW_TO_WINDOW_ARB:
 496       pop = iWGLAttr[++cur];
 497       if (pop) {
 498         PUSH2(oGLXAttr, GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT);
 499         TRACE("pAttr[%d] = GLX_DRAWABLE_TYPE: GLX_WINDOW_BIT\n", cur);
 500       }
 501       break;
 502
 503     case WGL_DRAW_TO_PBUFFER_ARB:
 504       pop = iWGLAttr[++cur];
 505       PUSH2(oGLXAttr, GLX_X_RENDERABLE, pop);
 506       TRACE("pAttr[%d] = GLX_RENDERABLE: %d\n", cur, pop);
 507       if (pop) {
 508         PUSH2(oGLXAttr, GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT);
 509         TRACE("pAttr[%d] = GLX_DRAWABLE_TYPE: GLX_PBUFFER_BIT\n", cur);
 510       }
 511       break;
 512
 513     case WGL_ACCELERATION_ARB:
 514     case WGL_SUPPORT_OPENGL_ARB:
 515       pop = iWGLAttr[++cur];
 516       /** nothing to do, if we are here, supposing support Accelerated OpenGL */
 517       TRACE("pAttr[%d] = WGL_SUPPORT_OPENGL_ARB: %d\n", cur, pop);
 518       break;
 519
 520     case WGL_PBUFFER_LARGEST_ARB:
 521       pop = iWGLAttr[++cur];
 522       PUSH2(oGLXAttr, GLX_LARGEST_PBUFFER, pop);
 523       TRACE("pAttr[%d] = GLX_LARGEST_PBUFFER: %x\n", cur, pop);
 524       break;
 525
 526     case WGL_SAMPLE_BUFFERS_ARB:
 527       pop = iWGLAttr[++cur];
 528       PUSH2(oGLXAttr, GLX_SAMPLE_BUFFERS_ARB, pop);
 529       TRACE("pAttr[%d] = GLX_SAMPLE_BUFFERS_ARB: %x\n", cur, pop);
 530       break;
 531
 532     case WGL_SAMPLES_ARB:
 533       pop = iWGLAttr[++cur];
 534       PUSH2(oGLXAttr, GLX_SAMPLES_ARB, pop);
 535       TRACE("pAttr[%d] = GLX_SAMPLES_ARB: %x\n", cur, pop);
 536       break;
 537
 538     case WGL_TEXTURE_FORMAT_ARB:
 539     case WGL_TEXTURE_TARGET_ARB:
 540     case WGL_MIPMAP_TEXTURE_ARB:
 541       TRACE("WGL_render_texture Attributes: %x as %x\n", iWGLAttr[cur], iWGLAttr[cur + 1]);
 542       pop = iWGLAttr[++cur];
 543       if (NULL == pbuf) {
 544         ERR("trying to use GLX_Pbuffer Attributes without Pbuffer (was %x)\n", iWGLAttr[cur]);
 545       }
 546       if (use_render_texture_ati) {
 547         /** nothing to do here */
 548       }
 549       else if (!use_render_texture_emulation) {
 550         if (WGL_NO_TEXTURE_ARB != pop) {
 551           ERR("trying to use WGL_render_texture Attributes without support (was %x)\n", iWGLAttr[cur]);
 552           return -1; /** error: don't support it */
 553         } else {
 554           PUSH2(oGLXAttr, GLX_X_RENDERABLE, pop);
 555           PUSH2(oGLXAttr, GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT);
 556         }
 557       }
 558       break ;
 559
 560     case WGL_BIND_TO_TEXTURE_RGB_ARB:
 561     case WGL_BIND_TO_TEXTURE_RGBA_ARB:
 562       pop = iWGLAttr[++cur];
 563       /** cannot be converted, see direct handling on
 564        *   - wglGetPixelFormatAttribivARB
 565        *  TODO: wglChoosePixelFormat
 566        */
 567       break ;
 568
 569     default:
 570       FIXME("unsupported %x WGL Attribute\n", iWGLAttr[cur]);
 571       break;
 572     }
 573     ++cur;
 574   }
 575
 576   /**
 577    * Trick as WGL_COLOR_BITS_ARB != GLX_BUFFER_SIZE
 578    *    WGL_COLOR_BITS_ARB + WGL_ALPHA_BITS_ARB == GLX_BUFFER_SIZE
 579    *
 580    *  WGL_COLOR_BITS_ARB
 581    *     The number of color bitplanes in each color buffer. For RGBA
 582    *     pixel types, it is the size of the color buffer, excluding the
 583    *     alpha bitplanes. For color-index pixels, it is the size of the
 584    *     color index buffer.
 585    *
 586    *  GLX_BUFFER_SIZE
 587    *     This attribute defines the number of bits per color buffer.
 588    *     For GLX FBConfigs that correspond to a PseudoColor or StaticColor visual,
 589    *     this is equal to the depth value reported in the X11 visual.
 590    *     For GLX FBConfigs that correspond to TrueColor or DirectColor visual,
 591    *     this is the sum of GLX_RED_SIZE, GLX_GREEN_SIZE, GLX_BLUE_SIZE, and GLX_ALPHA_SIZE.
 592    *
 593    */
 594   if (0 < wantColorBits) {
 595     if (!isColor) {
 596       wantColorBits += sz_alpha;
 597     }
 598     if (32 < wantColorBits) {
 599       ERR("buggy %d GLX_BUFFER_SIZE default to 32\n", wantColorBits);
 600       wantColorBits = 32;
 601     }
 602     PUSH2(oGLXAttr, GLX_BUFFER_SIZE, wantColorBits);
 603     TRACE("pAttr[%d] = WGL_COLOR_BITS_ARB: %d\n", cur, wantColorBits);
 604   }
 605
 606   return nAttribs;
 607 }
 608
 609 GLboolean WINAPI wglGetPixelFormatAttribivARB(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues)
 610 {
 611   Display* display = get_display( hdc );
 612   UINT i;
 613   GLXFBConfig* cfgs = NULL;
 614   GLXFBConfig  curCfg = NULL;
 615   int nCfgs = 0;
 616   int hTest;
 617   int tmp;
 618   int curGLXAttr = 0;
 619   int nWGLFormats = 0;
 620   int fmt_index = 0;
 621
 622   TRACE("(%p, %d, %d, %d, %p, %p)\n", hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, piValues);
 623
 624   if (0 < iLayerPlane) {
 625     FIXME("unsupported iLayerPlane(%d) > 0, returns FALSE\n", iLayerPlane);
 626     return GL_FALSE;
 627   }
 628
 629   cfgs = glXGetFBConfigs(display, DefaultScreen(display), &nCfgs);
 630   if (NULL == cfgs) {
 631     ERR("no FB Configs found for display(%p)\n", display);
 632     return GL_FALSE;
 633   }
 634
 635   /* Convert the WGL pixelformat to a GLX one, if this fails then most likely the iPixelFormat isn't supoprted.
 636    * We don't have to fail yet as a program can specify an invaled iPixelFormat (lets say 0) if it wants to query
 637    * the number of supported WGL formats. Whether the iPixelFormat is valid is handled in the for-loop below. */
 638   if(!ConvertPixelFormatWGLtoGLX(display, iPixelFormat, &fmt_index, &nWGLFormats)) {
 639     ERR("Unable to convert iPixelFormat %d to a GLX one, expect problems!\n", iPixelFormat);
 640   }
 641
 642   for (i = 0; i < nAttributes; ++i) {
 643     const int curWGLAttr = piAttributes[i];
 644     TRACE("pAttr[%d] = %x\n", i, curWGLAttr);
 645
 646     switch (curWGLAttr) {
 647     case WGL_NUMBER_PIXEL_FORMATS_ARB:
 648       piValues[i] = nWGLFormats;
 649       continue ;
 650
 651     case WGL_SUPPORT_OPENGL_ARB:
 652       piValues[i] = GL_TRUE;
 653       continue ;
 654
 655     case WGL_ACCELERATION_ARB:
 656       curGLXAttr = GLX_CONFIG_CAVEAT;
 657       if (nCfgs < iPixelFormat || 0 >= iPixelFormat) goto pix_error;
 658       curCfg = cfgs[iPixelFormat - 1];
 659       hTest = glXGetFBConfigAttrib(display, curCfg, curGLXAttr, &tmp);
 660       if (hTest) goto get_error;
 661       switch (tmp) {
 662       case GLX_NONE: piValues[i] = WGL_FULL_ACCELERATION_ARB; break;
 663       case GLX_SLOW_CONFIG: piValues[i] = WGL_NO_ACCELERATION_ARB; break;
 664       case GLX_NON_CONFORMANT_CONFIG: piValues[i] = WGL_FULL_ACCELERATION_ARB; break;
 665       default:
 666         ERR("unexpected Config Caveat(%x)\n", tmp);
 667         piValues[i] = WGL_NO_ACCELERATION_ARB;
 668       }
 669       continue ;
 670
 671     case WGL_TRANSPARENT_ARB:
 672       curGLXAttr = GLX_TRANSPARENT_TYPE;
 673       /* Check if the format is supported by checking if iPixelFormat isn't larger than the max number of
 674        * supported WGLFormats and also check if the GLX fmt_index is valid. */
 675       if((iPixelFormat > nWGLFormats) || (fmt_index > nCfgs)) goto pix_error;
 676       curCfg = cfgs[fmt_index];
 677       hTest = glXGetFBConfigAttrib(display, curCfg, curGLXAttr, &tmp);
 678       if (hTest) goto get_error;
 679       piValues[i] = GL_FALSE;
 680       if (GLX_NONE != tmp) piValues[i] = GL_TRUE;
 681       continue ;
 682
 683     case WGL_PIXEL_TYPE_ARB:
 684       curGLXAttr = GLX_RENDER_TYPE;
 685       /* Check if the format is supported by checking if iPixelFormat isn't larger than the max number of
 686        * supported WGLFormats and also check if the GLX fmt_index is valid. */
 687       if((iPixelFormat > nWGLFormats) || (fmt_index > nCfgs)) goto pix_error;
 688       curCfg = cfgs[fmt_index];
 689       hTest = glXGetFBConfigAttrib(display, curCfg, curGLXAttr, &tmp);
 690       if (hTest) goto get_error;
 691       TRACE("WGL_PIXEL_TYPE_ARB: GLX_RENDER_TYPE = 0x%x\n", tmp);
 692       if      (tmp & GLX_RGBA_BIT)           { piValues[i] = WGL_TYPE_RGBA_ARB; }
 693       else if (tmp & GLX_COLOR_INDEX_BIT)    { piValues[i] = WGL_TYPE_COLORINDEX_ARB; }
 694       else if (tmp & GLX_RGBA_FLOAT_BIT)     { piValues[i] = WGL_TYPE_RGBA_FLOAT_ATI; }
 695       else if (tmp & GLX_RGBA_FLOAT_ATI_BIT) { piValues[i] = WGL_TYPE_RGBA_FLOAT_ATI; }
 696       else {
 697         ERR("unexpected RenderType(%x)\n", tmp);
 698         piValues[i] = WGL_TYPE_RGBA_ARB;
 699       }
 700       continue ;
 701
 702     case WGL_COLOR_BITS_ARB:
 703       /** see ConvertAttribWGLtoGLX for explain */
 704       /* Check if the format is supported by checking if iPixelFormat isn't larger than the max number of
 705        * supported WGLFormats and also check if the GLX fmt_index is valid. */
 706       if((iPixelFormat > nWGLFormats) || (fmt_index > nCfgs)) goto pix_error;
 707       curCfg = cfgs[fmt_index];
 708       hTest = glXGetFBConfigAttrib(display, curCfg, GLX_BUFFER_SIZE, piValues + i);
 709       if (hTest) goto get_error;
 710       TRACE("WGL_COLOR_BITS_ARB: GLX_BUFFER_SIZE = %d\n", piValues[i]);
 711       hTest = glXGetFBConfigAttrib(display, curCfg, GLX_ALPHA_SIZE, &tmp);
 712       if (hTest) goto get_error;
 713       TRACE("WGL_COLOR_BITS_ARB: GLX_ALPHA_SIZE = %d\n", tmp);
 714       piValues[i] = piValues[i] - tmp;
 715       continue ;
 716
 717     case WGL_BIND_TO_TEXTURE_RGB_ARB:
 718       if (use_render_texture_ati) {
 719         curGLXAttr = GLX_BIND_TO_TEXTURE_RGB_ATI;
 720         break;
 721       }
 722     case WGL_BIND_TO_TEXTURE_RGBA_ARB:
 723       if (use_render_texture_ati) {
 724         curGLXAttr = GLX_BIND_TO_TEXTURE_RGBA_ATI;
 725         break;
 726       }
 727       if (!use_render_texture_emulation) {
 728         piValues[i] = GL_FALSE;
 729         continue ;
 730       }
 731       curGLXAttr = GLX_RENDER_TYPE;
 732       /* Check if the format is supported by checking if iPixelFormat isn't larger than the max number of
 733        * supported WGLFormats and also check if the GLX fmt_index is valid. */
 734       if((iPixelFormat > nWGLFormats) || (fmt_index > nCfgs)) goto pix_error;
 735       curCfg = cfgs[fmt_index];
 736       hTest = glXGetFBConfigAttrib(display, curCfg, curGLXAttr, &tmp);
 737       if (hTest) goto get_error;
 738       if (GLX_COLOR_INDEX_BIT == tmp) {
 739         piValues[i] = GL_FALSE;
 740         continue ;
 741       }
 742       hTest = glXGetFBConfigAttrib(display, curCfg, GLX_DRAWABLE_TYPE, &tmp);
 743       if (hTest) goto get_error;
 744       piValues[i] = (tmp & GLX_PBUFFER_BIT) ? GL_TRUE : GL_FALSE;
 745       continue ;
 746
 747     case WGL_BLUE_BITS_ARB:
 748       curGLXAttr = GLX_BLUE_SIZE;
 749       break;
 750     case WGL_RED_BITS_ARB:
 751       curGLXAttr = GLX_RED_SIZE;
 752       break;
 753     case WGL_GREEN_BITS_ARB:
 754       curGLXAttr = GLX_GREEN_SIZE;
 755       break;
 756     case WGL_ALPHA_BITS_ARB:
 757       curGLXAttr = GLX_ALPHA_SIZE;
 758       break;
 759     case WGL_DEPTH_BITS_ARB:
 760       curGLXAttr = GLX_DEPTH_SIZE;
 761       break;
 762     case WGL_STENCIL_BITS_ARB:
 763       curGLXAttr = GLX_STENCIL_SIZE;
 764       break;
 765     case WGL_DOUBLE_BUFFER_ARB:
 766       curGLXAttr = GLX_DOUBLEBUFFER;
 767       break;
 768     case WGL_STEREO_ARB:
 769       curGLXAttr = GLX_STEREO;
 770       break;
 771     case WGL_AUX_BUFFERS_ARB:
 772       curGLXAttr = GLX_AUX_BUFFERS;
 773       break;
 774
 775     case WGL_SUPPORT_GDI_ARB:
 776     case WGL_DRAW_TO_WINDOW_ARB:
 777     case WGL_DRAW_TO_BITMAP_ARB:
 778     case WGL_DRAW_TO_PBUFFER_ARB:
 779       curGLXAttr = GLX_X_RENDERABLE;
 780       break;
 781
 782     case WGL_PBUFFER_LARGEST_ARB:
 783       curGLXAttr = GLX_LARGEST_PBUFFER;
 784       break;
 785
 786     case WGL_SAMPLE_BUFFERS_ARB:
 787       curGLXAttr = GLX_SAMPLE_BUFFERS_ARB;
 788       break;
 789
 790     case WGL_SAMPLES_ARB:
 791       curGLXAttr = GLX_SAMPLES_ARB;
 792       break;
 793
 794     default:
 795       FIXME("unsupported %x WGL Attribute\n", curWGLAttr);
 796     }
 797
 798     if (0 != curGLXAttr) {
 799       /* Check if the format is supported by checking if iPixelFormat isn't larger than the max number of
 800        * supported WGLFormats and also check if the GLX fmt_index is valid. */
 801       if((iPixelFormat > 0) && ((iPixelFormat > nWGLFormats) || (fmt_index > nCfgs))) goto pix_error;
 802       curCfg = cfgs[fmt_index];
 803       hTest = glXGetFBConfigAttrib(display, curCfg, curGLXAttr, piValues + i);
 804       if (hTest) goto get_error;
 805     } else {
 806       piValues[i] = GL_FALSE;
 807     }
 808   }
 809
 810   return GL_TRUE;
 811
 812 get_error:
 813   ERR("(%p): unexpected failure on GetFBConfigAttrib(%x) returns FALSE\n", hdc, curGLXAttr);
 814   XFree(cfgs);
 815   return GL_FALSE;
 816
 817 pix_error:
 818   ERR("(%p): unexpected iPixelFormat(%d) vs nFormats(%d), returns FALSE\n", hdc, iPixelFormat, nCfgs);
 819   XFree(cfgs);
 820   return GL_FALSE;
 821 }
 822
 823 GLboolean WINAPI wglGetPixelFormatAttribfvARB(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues)
 824 {
 825     FIXME("(%p, %d, %d, %d, %p, %p): stub\n", hdc, iPixelFormat, iLayerPlane, nAttributes, piAttributes, pfValues);
 826     return GL_FALSE;
 827 }
 828 /**
 829  * http://publib.boulder.ibm.com/infocenter/pseries/index.jsp?topic=/com.ibm.aix.doc/libs/openglrf/glXChooseFBConfig.htm
 830  */
 831 GLboolean WINAPI wglChoosePixelFormatARB(HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats)
 832 {
 833   Display* display = get_display( hdc );
 834   int gl_test = 0;
 835   int attribs[256];
 836   int nAttribs = 0;
 837   GLboolean res = FALSE;
 838
 839   /* We need the visualid to check if the format is suitable */
 840   VisualID visualid = (VisualID)GetPropA( GetDesktopWindow(), "__wine_x11_visual_id" );
 841
 842   GLXFBConfig* cfgs = NULL;
 843   int nCfgs = 0;
 844   UINT it;
 845   int fmt_id;
 846
 847   GLXFBConfig* cfgs_fmt = NULL;
 848   int nCfgs_fmt = 0;
 849   UINT it_fmt;
 850   int tmp_fmt_id;
 851   int tmp_vis_id;
 852
 853   int pfmt_it = 0;
 854   int offscreen_index = 1; /* Start at one because we allways have a main visual at iPixelFormat=1 */
 855
 856   TRACE("(%p, %p, %p, %d, %p, %p): hackish\n", hdc, piAttribIList, pfAttribFList, nMaxFormats, piFormats, nNumFormats);
 857   if (NULL != pfAttribFList) {
 858     FIXME("unused pfAttribFList\n");
 859   }
 860
 861   nAttribs = ConvertAttribWGLtoGLX(piAttribIList, attribs, NULL);
 862   if (-1 == nAttribs) {
 863     WARN("Cannot convert WGL to GLX attributes\n");
 864     return GL_FALSE;
 865   }
 866   PUSH1(attribs, None);
 867
 868   /* Search for FB configurations matching the requirements in attribs */
 869   cfgs = glXChooseFBConfig(display, DefaultScreen(display), attribs, &nCfgs);
 870   if (NULL == cfgs) {
 871     WARN("Compatible Pixel Format not found\n");
 872     return GL_FALSE;
 873   }
 874
 875   /* Get a list of all FB configurations */
 876   cfgs_fmt = glXGetFBConfigs(display, DefaultScreen(display), &nCfgs_fmt);
 877   if (NULL == cfgs_fmt) {
 878     ERR("Failed to get All FB Configs\n");
 879     XFree(cfgs);
 880     return GL_FALSE;
 881   }
 882
 883   /* Loop through all matching formats and check if they are suitable.
 884    * Note that this function should at max return nMaxFormats different formats */
 885   for (it = 0; pfmt_it < nMaxFormats && it < nCfgs; ++it) {
 886     gl_test = glXGetFBConfigAttrib(display, cfgs[it], GLX_FBCONFIG_ID, &fmt_id);
 887     if (gl_test) {
 888       ERR("Failed to retrieve FBCONFIG_ID from GLXFBConfig, expect problems.\n");
 889       continue ;
 890     }
 891
 892     gl_test = glXGetFBConfigAttrib(display, cfgs[it], GLX_VISUAL_ID, &tmp_vis_id);
 893     if (gl_test) {
 894       ERR("Failed to retrieve VISUAL_ID from GLXFBConfig, expect problems.\n");
 895       continue ;
 896     }
 897
 898     /* When the visualid of the GLXFBConfig matches the one of the main visual we have found our
 899      * only supported onscreen rendering format. This format has a WGL index of 1. */
 900     if(tmp_vis_id == visualid) {
 901       piFormats[pfmt_it] = 1;
 902       ++pfmt_it;
 903       res = GL_TRUE;
 904       TRACE("Found compatible GLXFBConfig 0x%x with WGL index 1\n", fmt_id);
 905       continue;
 906     }
 907     /* Only continue with this loop for offscreen rendering formats (visualid = 0) */
 908     else if(tmp_vis_id != 0) {
 909       TRACE("Discarded GLXFBConfig %0x with VisualID %x because the visualid is not the same as our main visual (%lx)\n", fmt_id, tmp_vis_id, visualid);
 910       continue;
 911     }
 912
 913     /* Find the index of the found format in the whole format table */
 914     for (it_fmt = 0; it_fmt < nCfgs_fmt; ++it_fmt) {
 915       gl_test = glXGetFBConfigAttrib(display, cfgs_fmt[it_fmt], GLX_FBCONFIG_ID, &tmp_fmt_id);
 916       if (gl_test) {
 917         ERR("Failed to retrieve FBCONFIG_ID from GLXFBConfig, expect problems.\n");
 918         continue ;
 919       }
 920       gl_test = glXGetFBConfigAttrib(display, cfgs[it], GLX_VISUAL_ID, &tmp_vis_id);
 921       if (gl_test) {
 922         ERR("Failed to retrieve VISUAL_ID from GLXFBConfig, expect problems.\n");
 923         continue ;
 924       }
 925       /* The format of Wine's main visual is stored at index 1 of our WGL format table.
 926        * At higher indices we store offscreen rendering formats (visualid=0). Below we calculate
 927        * the index of the offscreen format. We do this by counting the number of offscreen formats
 928        * which we see upto reaching our target format. */
 929       if(tmp_vis_id == 0)
 930         offscreen_index++;
 931
 932       /* We have found the format in the table (note the format is offscreen) */
 933       if (fmt_id == tmp_fmt_id) {
 934         int tmp;
 935
 936         piFormats[pfmt_it] = offscreen_index + 1; /* Add 1 to get a one-based index */
 937         ++pfmt_it;
 938         glXGetFBConfigAttrib(display, cfgs_fmt[it_fmt], GLX_ALPHA_SIZE, &tmp);
 939         TRACE("ALPHA_SIZE of FBCONFIG_ID(%d/%d) found as '%d'\n", it_fmt + 1, nCfgs_fmt, tmp);
 940         break ;
 941       }
 942     }
 943     if (it_fmt == nCfgs_fmt) {
 944       ERR("Failed to get valid fmt for %d. Try next.\n", it);
 945       continue ;
 946     }
 947     TRACE("at %d/%d found FBCONFIG_ID(%d/%d)\n", it + 1, nCfgs, piFormats[it], nCfgs_fmt);
 948   }
 949
 950   *nNumFormats = pfmt_it;
 951   /** free list */
 952   XFree(cfgs);
 953   XFree(cfgs_fmt);
 954   return GL_TRUE;
 955 }
 956
 957 #define HPBUFFERARB void *
 958 HPBUFFERARB WINAPI wglCreatePbufferARB(HDC hdc, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList)
 959 {
 960   Wine_GLPBuffer* object = NULL;
 961   Display* display = get_display( hdc );
 962   GLXFBConfig* cfgs = NULL;
 963   int nCfgs = 0;
 964   int attribs[256];
 965   unsigned nAttribs = 0;
 966   int fmt_index = 0;
 967
 968   TRACE("(%p, %d, %d, %d, %p)\n", hdc, iPixelFormat, iWidth, iHeight, piAttribList);
 969
 970   if (0 >= iPixelFormat) {
 971     ERR("(%p): unexpected iPixelFormat(%d) <= 0, returns NULL\n", hdc, iPixelFormat);
 972     SetLastError(ERROR_INVALID_PIXEL_FORMAT);
 973     return NULL; /* unexpected error */
 974   }
 975
 976   cfgs = glXGetFBConfigs(display, DefaultScreen(display), &nCfgs);
 977
 978   if (NULL == cfgs || 0 == nCfgs) {
 979     ERR("(%p): Cannot get FB Configs for iPixelFormat(%d), returns NULL\n", hdc, iPixelFormat);
 980     SetLastError(ERROR_INVALID_PIXEL_FORMAT);
 981     return NULL; /* unexpected error */
 982   }
 983
 984   /* Convert the WGL pixelformat to a GLX format, if it fails then the format is invalid */
 985   if(!ConvertPixelFormatWGLtoGLX(display, iPixelFormat, &fmt_index, &nCfgs)) {
 986     ERR("(%p): unexpected iPixelFormat(%d) > nFormats(%d), returns NULL\n", hdc, iPixelFormat, nCfgs);
 987     SetLastError(ERROR_INVALID_PIXEL_FORMAT);
 988     goto create_failed; /* unexpected error */
 989   }
 990
 991   object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(Wine_GLPBuffer));
 992   if (NULL == object) {
 993     SetLastError(ERROR_NO_SYSTEM_RESOURCES);
 994     goto create_failed; /* unexpected error */
 995   }
 996   object->hdc = hdc;
 997   object->display = display;
 998   object->width = iWidth;
 999   object->height = iHeight;
1000
1001   nAttribs = ConvertAttribWGLtoGLX(piAttribList, attribs, object);
1002   if (-1 == nAttribs) {
1003     WARN("Cannot convert WGL to GLX attributes\n");
1004     goto create_failed;
1005   }
1006   PUSH2(attribs, GLX_PBUFFER_WIDTH,  iWidth);
1007   PUSH2(attribs, GLX_PBUFFER_HEIGHT, iHeight);
1008   while (0 != *piAttribList) {
1009     int attr_v;
1010     switch (*piAttribList) {
1011     case WGL_TEXTURE_FORMAT_ARB: {
1012       ++piAttribList;
1013       attr_v = *piAttribList;
1014       TRACE("WGL_render_texture Attribute: WGL_TEXTURE_FORMAT_ARB as %x\n", attr_v);
1015       if (use_render_texture_ati) {
1016         int type = 0;
1017         switch (attr_v) {
1018         case WGL_NO_TEXTURE_ARB: type = GLX_NO_TEXTURE_ATI; break ;
1019         case WGL_TEXTURE_RGB_ARB: type = GLX_TEXTURE_RGB_ATI; break ;
1020         case WGL_TEXTURE_RGBA_ARB: type = GLX_TEXTURE_RGBA_ATI; break ;
1021         default:
1022           SetLastError(ERROR_INVALID_DATA);
1023           goto create_failed;
1024         }
1025         object->use_render_texture = 1;
1026         PUSH2(attribs, GLX_TEXTURE_FORMAT_ATI, type);
1027       } else {
1028         if (WGL_NO_TEXTURE_ARB == attr_v) {
1029           object->use_render_texture = 0;
1030         } else {
1031           if (!use_render_texture_emulation) {
1032             SetLastError(ERROR_INVALID_DATA);
1033             goto create_failed;
1034           }
1035           switch (attr_v) {
1036           case WGL_TEXTURE_RGB_ARB:
1037             object->use_render_texture = GL_RGB;
1038             break;
1039           case WGL_TEXTURE_RGBA_ARB:
1040             object->use_render_texture = GL_RGBA;
1041             break;
1042           default:
1043             SetLastError(ERROR_INVALID_DATA);
1044             goto create_failed;
1045           }
1046         }
1047       }
1048       break;
1049     }
1050
1051     case WGL_TEXTURE_TARGET_ARB: {
1052       ++piAttribList;
1053       attr_v = *piAttribList;
1054       TRACE("WGL_render_texture Attribute: WGL_TEXTURE_TARGET_ARB as %x\n", attr_v);
1055       if (use_render_texture_ati) {
1056         int type = 0;
1057         switch (attr_v) {
1058         case WGL_NO_TEXTURE_ARB: type = GLX_NO_TEXTURE_ATI; break ;
1059         case WGL_TEXTURE_CUBE_MAP_ARB: type = GLX_TEXTURE_CUBE_MAP_ATI; break ;
1060         case WGL_TEXTURE_1D_ARB: type = GLX_TEXTURE_1D_ATI; break ;
1061         case WGL_TEXTURE_2D_ARB: type = GLX_TEXTURE_2D_ATI; break ;
1062         default:
1063           SetLastError(ERROR_INVALID_DATA);
1064           goto create_failed;
1065         }
1066         PUSH2(attribs, GLX_TEXTURE_TARGET_ATI, type);
1067       } else {
1068         if (WGL_NO_TEXTURE_ARB == attr_v) {
1069           object->texture_target = 0;
1070         } else {
1071           if (!use_render_texture_emulation) {
1072             SetLastError(ERROR_INVALID_DATA);
1073             goto create_failed;
1074           }
1075           switch (attr_v) {
1076           case WGL_TEXTURE_CUBE_MAP_ARB: {
1077             if (iWidth != iHeight) {
1078               SetLastError(ERROR_INVALID_DATA);
1079               goto create_failed;
1080             }
1081             object->texture_target = GL_TEXTURE_CUBE_MAP;
1082             object->texture_bind_target = GL_TEXTURE_CUBE_MAP;
1083             break;
1084           }
1085           case WGL_TEXTURE_1D_ARB: {
1086             if (1 != iHeight) {
1087               SetLastError(ERROR_INVALID_DATA);
1088               goto create_failed;
1089             }
1090             object->texture_target = GL_TEXTURE_1D;
1091             object->texture_bind_target = GL_TEXTURE_1D;
1092             break;
1093           }
1094           case WGL_TEXTURE_2D_ARB: {
1095             object->texture_target = GL_TEXTURE_2D;
1096             object->texture_bind_target = GL_TEXTURE_2D;
1097             break;
1098           }
1099           default:
1100             SetLastError(ERROR_INVALID_DATA);
1101             goto create_failed;
1102           }
1103         }
1104       }
1105       break;
1106     }
1107
1108     case WGL_MIPMAP_TEXTURE_ARB: {
1109       ++piAttribList;
1110       attr_v = *piAttribList;
1111       TRACE("WGL_render_texture Attribute: WGL_MIPMAP_TEXTURE_ARB as %x\n", attr_v);
1112       if (use_render_texture_ati) {
1113         PUSH2(attribs, GLX_MIPMAP_TEXTURE_ATI, attr_v);
1114       } else {
1115         if (!use_render_texture_emulation) {
1116           SetLastError(ERROR_INVALID_DATA);
1117           goto create_failed;
1118         }
1119         /*
1120         if (0 != attr_v) {
1121           SetLastError(ERROR_INVALID_DATA);
1122           goto create_failed;
1123         }
1124         */
1125       }
1126       break ;
1127     }
1128     }
1129     ++piAttribList;
1130   }
1131
1132   PUSH1(attribs, None);
1133   object->drawable = glXCreatePbuffer(display, cfgs[fmt_index], attribs);
1134   TRACE("new Pbuffer drawable as %p\n", (void*) object->drawable);
1135   if (!object->drawable) {
1136     SetLastError(ERROR_NO_SYSTEM_RESOURCES);
1137     goto create_failed; /* unexpected error */
1138   }
1139   TRACE("->(%p)\n", object);
1140
1141   /** free list */
1142   XFree(cfgs);
1143   return (HPBUFFERARB) object;
1144
1145 create_failed:
1146   if (NULL != cfgs) XFree(cfgs);
1147   HeapFree(GetProcessHeap(), 0, object);
1148   TRACE("->(FAILED)\n");
1149   return (HPBUFFERARB) NULL;
1150 }
1151
1152 HDC WINAPI wglGetPbufferDCARB(HPBUFFERARB hPbuffer)
1153 {
1154   Wine_GLPBuffer* object = (Wine_GLPBuffer*) hPbuffer;
1155   HDC hDC;
1156   if (NULL == object) {
1157     SetLastError(ERROR_INVALID_HANDLE);
1158     return NULL;
1159   }
1160   hDC = CreateCompatibleDC(object->hdc);
1161
1162   /* The function wglGetPbufferDCARB returns a DC to which the pbuffer can be connected.
1163    * We only support one onscreen rendering format (the one from the main visual), so use that. */
1164   SetPixelFormat(hDC, 1, NULL);
1165   set_drawable(hDC, object->drawable); /* works ?? */
1166   TRACE("(%p)->(%p)\n", hPbuffer, hDC);
1167   return hDC;
1168 }
1169
1170 int WINAPI wglReleasePbufferDCARB(HPBUFFERARB hPbuffer, HDC hdc)
1171 {
1172   TRACE("(%p, %p)\n", hPbuffer, hdc);
1173   DeleteDC(hdc);
1174   return 0;
1175 }
1176
1177 GLboolean WINAPI wglDestroyPbufferARB(HPBUFFERARB hPbuffer)
1178 {
1179   Wine_GLPBuffer* object = (Wine_GLPBuffer*) hPbuffer;
1180   TRACE("(%p)\n", hPbuffer);
1181   if (NULL == object) {
1182     SetLastError(ERROR_INVALID_HANDLE);
1183     return GL_FALSE;
1184   }
1185   glXDestroyPbuffer(object->display, object->drawable);
1186   HeapFree(GetProcessHeap(), 0, object);
1187   return GL_TRUE;
1188 }
1189
1190 GLboolean WINAPI wglQueryPbufferARB(HPBUFFERARB hPbuffer, int iAttribute, int *piValue)
1191 {
1192   Wine_GLPBuffer* object = (Wine_GLPBuffer*) hPbuffer;
1193   TRACE("(%p, 0x%x, %p)\n", hPbuffer, iAttribute, piValue);
1194   if (NULL == object) {
1195     SetLastError(ERROR_INVALID_HANDLE);
1196     return GL_FALSE;
1197   }
1198   switch (iAttribute) {
1199   case WGL_PBUFFER_WIDTH_ARB:
1200     glXQueryDrawable(object->display, object->drawable, GLX_WIDTH, (unsigned int*) piValue);
1201     break;
1202   case WGL_PBUFFER_HEIGHT_ARB:
1203     glXQueryDrawable(object->display, object->drawable, GLX_HEIGHT, (unsigned int*) piValue);
1204     break;
1205
1206   case WGL_PBUFFER_LOST_ARB:
1207     FIXME("unsupported WGL_PBUFFER_LOST_ARB (need glXSelectEvent/GLX_DAMAGED work)\n");
1208     break;
1209
1210   case WGL_TEXTURE_FORMAT_ARB:
1211     if (use_render_texture_ati) {
1212       unsigned int tmp;
1213       int type = WGL_NO_TEXTURE_ARB;
1214       glXQueryDrawable(object->display, object->drawable, GLX_TEXTURE_FORMAT_ATI, &tmp);
1215       switch (tmp) {
1216       case GLX_NO_TEXTURE_ATI: type = WGL_NO_TEXTURE_ARB; break ;
1217       case GLX_TEXTURE_RGB_ATI: type = WGL_TEXTURE_RGB_ARB; break ;
1218       case GLX_TEXTURE_RGBA_ATI: type = WGL_TEXTURE_RGBA_ARB; break ;
1219       }
1220       *piValue = type;
1221     } else {
1222       if (!object->use_render_texture) {
1223         *piValue = WGL_NO_TEXTURE_ARB;
1224       } else {
1225         if (!use_render_texture_emulation) {
1226           SetLastError(ERROR_INVALID_HANDLE);
1227           return GL_FALSE;
1228         }
1229         if (GL_RGBA == object->use_render_texture) {
1230           *piValue = WGL_TEXTURE_RGBA_ARB;
1231         } else {
1232           *piValue = WGL_TEXTURE_RGB_ARB;
1233         }
1234       }
1235     }
1236     break;
1237
1238   case WGL_TEXTURE_TARGET_ARB:
1239     if (use_render_texture_ati) {
1240       unsigned int tmp;
1241       int type = WGL_NO_TEXTURE_ARB;
1242       glXQueryDrawable(object->display, object->drawable, GLX_TEXTURE_TARGET_ATI, &tmp);
1243       switch (tmp) {
1244       case GLX_NO_TEXTURE_ATI: type = WGL_NO_TEXTURE_ARB; break ;
1245       case GLX_TEXTURE_CUBE_MAP_ATI: type = WGL_TEXTURE_CUBE_MAP_ARB; break ;
1246       case GLX_TEXTURE_1D_ATI: type = WGL_TEXTURE_1D_ARB; break ;
1247       case GLX_TEXTURE_2D_ATI: type = WGL_TEXTURE_2D_ARB; break ;
1248       }
1249       *piValue = type;
1250     } else {
1251       if (!object->texture_target) {
1252         *piValue = WGL_NO_TEXTURE_ARB;
1253       } else {
1254         if (!use_render_texture_emulation) {
1255           SetLastError(ERROR_INVALID_DATA);
1256           return GL_FALSE;
1257         }
1258         switch (object->texture_target) {
1259         case GL_TEXTURE_1D:       *piValue = WGL_TEXTURE_CUBE_MAP_ARB; break;
1260         case GL_TEXTURE_2D:       *piValue = WGL_TEXTURE_1D_ARB; break;
1261         case GL_TEXTURE_CUBE_MAP: *piValue = WGL_TEXTURE_2D_ARB; break;
1262         }
1263       }
1264     }
1265     break;
1266
1267   case WGL_MIPMAP_TEXTURE_ARB:
1268     if (use_render_texture_ati) {
1269       glXQueryDrawable(object->display, object->drawable, GLX_MIPMAP_TEXTURE_ATI, (unsigned int*) piValue);
1270     } else {
1271       *piValue = GL_FALSE; /** don't support that */
1272       FIXME("unsupported WGL_ARB_render_texture attribute query for 0x%x\n", iAttribute);
1273     }
1274     break;
1275
1276   default:
1277     FIXME("unexpected attribute %x\n", iAttribute);
1278     break;
1279   }
1280
1281   return GL_TRUE;
1282 }
1283
1284 static GLboolean WINAPI wglBindTexImageARB(HPBUFFERARB hPbuffer, int iBuffer)
1285 {
1286   Wine_GLPBuffer* object = (Wine_GLPBuffer*) hPbuffer;
1287   TRACE("(%p, %d)\n", hPbuffer, iBuffer);
1288   if (NULL == object) {
1289     SetLastError(ERROR_INVALID_HANDLE);
1290     return GL_FALSE;
1291   }
1292   if (!object->use_render_texture) {
1293     SetLastError(ERROR_INVALID_HANDLE);
1294     return GL_FALSE;
1295   }
1296   if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
1297     int do_init = 0;
1298     GLint prev_binded_tex;
1299     glGetIntegerv(object->texture_target, &prev_binded_tex);
1300     if (NULL == object->render_ctx) {
1301       object->render_hdc = wglGetPbufferDCARB(hPbuffer);
1302       object->render_ctx = wglCreateContext(object->render_hdc);
1303       do_init = 1;
1304     }
1305     object->prev_hdc = wglGetCurrentDC();
1306     object->prev_ctx = wglGetCurrentContext();
1307     wglMakeCurrent(object->render_hdc, object->render_ctx);
1308     /*
1309     if (do_init) {
1310       glBindTexture(object->texture_target, object->texture);
1311       if (GL_RGBA == object->use_render_texture) {
1312         glTexImage2D(object->texture_target, 0, GL_RGBA8, object->width, object->height, 0, GL_RGBA, GL_FLOAT, NULL);
1313       } else {
1314         glTexImage2D(object->texture_target, 0, GL_RGB8, object->width, object->height, 0, GL_RGB, GL_FLOAT, NULL);
1315       }
1316     }
1317     */
1318     object->texture = prev_binded_tex;
1319     return GL_TRUE;
1320   }
1321   if (NULL != p_glXBindTexImageARB) {
1322     return p_glXBindTexImageARB(object->display, object->drawable, iBuffer);
1323   }
1324   return GL_FALSE;
1325 }
1326
1327 static GLboolean WINAPI wglReleaseTexImageARB(HPBUFFERARB hPbuffer, int iBuffer)
1328 {
1329   Wine_GLPBuffer* object = (Wine_GLPBuffer*) hPbuffer;
1330   TRACE("(%p, %d)\n", hPbuffer, iBuffer);
1331   if (NULL == object) {
1332     SetLastError(ERROR_INVALID_HANDLE);
1333     return GL_FALSE;
1334   }
1335   if (!object->use_render_texture) {
1336     SetLastError(ERROR_INVALID_HANDLE);
1337     return GL_FALSE;
1338   }
1339   if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
1340     /*
1341     GLint prev_binded_tex;
1342     glGetIntegerv(object->texture_target, &prev_binded_tex);
1343     if (GL_TEXTURE_1D == object->texture_target) {
1344       glCopyTexSubImage1D(object->texture_target, object->texture_level, 0, 0, 0, object->width);
1345     } else {
1346       glCopyTexSubImage2D(object->texture_target, object->texture_level, 0, 0, 0, 0, object->width, object->height);
1347     }
1348     glBindTexture(object->texture_target, prev_binded_tex);
1349     SwapBuffers(object->render_hdc);
1350     */
1351     glBindTexture(object->texture_target, object->texture);
1352     if (GL_TEXTURE_1D == object->texture_target) {
1353       glCopyTexSubImage1D(object->texture_target, object->texture_level, 0, 0, 0, object->width);
1354     } else {
1355       glCopyTexSubImage2D(object->texture_target, object->texture_level, 0, 0, 0, 0, object->width, object->height);
1356     }
1357
1358     wglMakeCurrent(object->prev_hdc, object->prev_ctx);
1359     return GL_TRUE;
1360   }
1361   if (NULL != p_glXReleaseTexImageARB) {
1362     return p_glXReleaseTexImageARB(object->display, object->drawable, iBuffer);
1363   }
1364   return GL_FALSE;
1365 }
1366
1367 static GLboolean WINAPI wglSetPbufferAttribARB(HPBUFFERARB hPbuffer, const int *piAttribList)
1368 {
1369   Wine_GLPBuffer* object = (Wine_GLPBuffer*) hPbuffer;
1370   WARN("(%p, %p): alpha-testing, report any problem\n", hPbuffer, piAttribList);
1371   if (NULL == object) {
1372     SetLastError(ERROR_INVALID_HANDLE);
1373     return GL_FALSE;
1374   }
1375   if (!object->use_render_texture) {
1376     SetLastError(ERROR_INVALID_HANDLE);
1377     return GL_FALSE;
1378   }
1379   if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
1380     return GL_TRUE;
1381   }
1382   if (NULL != p_glXDrawableAttribARB) {
1383     if (use_render_texture_ati) {
1384       FIXME("Need conversion for GLX_ATI_render_texture\n");
1385     }
1386     return p_glXDrawableAttribARB(object->display, object->drawable, piAttribList);
1387   }
1388   return GL_FALSE;
1389 }
1390
1391 static const struct {
1392     const char *name;
1393     BOOL (*query_function)(glXGetProcAddressARB_t proc, const char *gl_version, const char *gl_extensions,
1394                            const char *glx_version, const char *glx_extensions,
1395                            const char *server_glx_extensions, const char *client_glx_extensions);
1396 } extension_list[] = {
1397   { "WGL_ARB_make_current_read", query_function_make_current_read },
1398   { "WGL_ARB_multisample",       query_function_multisample },
1399   { "WGL_ARB_pbuffer",           query_function_pbuffer },
1400   { "WGL_ARB_pixel_format" ,     query_function_pixel_format },
1401   { "WGL_ARB_render_texture",    query_function_render_texture },
1402   { "WGL_EXT_swap_control",      query_function_swap_control }
1403 };
1404
1405 /* Used to initialize the WGL extension string at DLL loading */
1406 void wgl_ext_initialize_extensions(Display *display, int screen, glXGetProcAddressARB_t proc, const char* disabled_extensions)
1407 {
1408     int size = strlen(WGL_extensions_base);
1409     const char *glx_extensions = glXQueryExtensionsString(display, screen);
1410     const char *server_glx_extensions = glXQueryServerString(display, screen, GLX_EXTENSIONS);
1411     const char *client_glx_extensions = glXGetClientString(display, GLX_EXTENSIONS);
1412     const char *gl_extensions = (const char *) glGetString(GL_EXTENSIONS);
1413     const char *gl_version = (const char *) glGetString(GL_VERSION);
1414     const char *server_glx_version = glXQueryServerString(display, screen, GLX_VERSION);
1415     const char *glx_version = glXGetClientString(display, GLX_VERSION);
1416     int i;
1417
1418     TRACE("GL version         : %s.\n", debugstr_a(gl_version));
1419     TRACE("GL exts            : %s.\n", debugstr_a(gl_extensions));
1420     TRACE("GLX exts           : %s.\n", debugstr_a(glx_extensions));
1421     TRACE("Server GLX version : %s.\n", debugstr_a(server_glx_version));
1422     TRACE("Client GLX version : %s.\n", debugstr_a(glx_version));
1423     TRACE("Server GLX exts    : %s.\n", debugstr_a(server_glx_extensions));
1424     TRACE("Client GLX exts    : %s.\n", debugstr_a(client_glx_extensions));
1425
1426     for (i = 0; i < (sizeof(extension_list) / sizeof(extension_list[0])); i++) {
1427         if (strstr(disabled_extensions, extension_list[i].name)) continue ; /* disabled by config, next */
1428         if (extension_list[i].query_function(proc,
1429                                              gl_version, gl_extensions,
1430                                              glx_version, glx_extensions,
1431                                              server_glx_extensions, client_glx_extensions)) {
1432             size += strlen(extension_list[i].name) + 1;
1433         }
1434     }
1435
1436     /* For the moment, only 'base' extensions are supported. */
1437     WGL_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size + 1);
1438     if (WGL_extensions == NULL) {
1439         WGL_extensions = (char *) WGL_extensions_base;
1440     } else {
1441         strcpy(WGL_extensions, WGL_extensions_base);
1442         for (i = 0; i < (sizeof(extension_list) / sizeof(extension_list[0])); i++) {
1443             if (strstr(disabled_extensions, extension_list[i].name)) continue ; /* disabled by config, next */
1444             if (extension_list[i].query_function(proc,
1445                                                  gl_version, gl_extensions,
1446                                                  glx_version, glx_extensions,
1447                                                  server_glx_extensions, client_glx_extensions)) {
1448                 strcat(WGL_extensions, " ");
1449                 strcat(WGL_extensions, extension_list[i].name);
1450             }
1451         }
1452     }
1453
1454     TRACE("Supporting following WGL extensions : %s.\n", debugstr_a(WGL_extensions));
1455 }
1456
1457 void wgl_ext_finalize_extensions(void)
1458 {
1459     if (WGL_extensions != WGL_extensions_base) {
1460         HeapFree(GetProcessHeap(), 0, WGL_extensions);
1461     }
1462 }
1463
1464
1465 /* these are located in wgl.c for convenience of implementation */
1466 BOOL    WINAPI wglMakeContextCurrentARB(HDC,HDC,HGLRC);
1467 HDC     WINAPI wglGetCurrentReadDCARB(void);
1468
1469
1470 /*
1471  * Putting this at the end to prevent having to write the prototypes :-)
1472  *
1473  * @WARNING: this list must be ordered by name
1474  *
1475  * @TODO: real handle caps on providing some func_init functions (third param, ex: to check extensions)
1476  */
1477 WGL_extension wgl_extension_registry[] = {
1478     { "wglBindTexImageARB", (void *) wglBindTexImageARB, NULL, NULL},
1479     { "wglChoosePixelFormatARB", (void *) wglChoosePixelFormatARB, NULL, NULL},
1480     { "wglCreatePbufferARB", (void *) wglCreatePbufferARB, NULL, NULL},
1481     { "wglDestroyPbufferARB", (void *) wglDestroyPbufferARB, NULL, NULL},
1482     { "wglGetCurrentReadDCARB", (void *) wglGetCurrentReadDCARB, NULL, NULL},
1483     { "wglGetExtensionsStringARB", (void *) wglGetExtensionsStringARB, NULL, NULL},
1484     { "wglGetExtensionsStringEXT", (void *) wglGetExtensionsStringEXT, NULL, NULL},
1485     { "wglGetPbufferDCARB", (void *) wglGetPbufferDCARB, NULL, NULL},
1486     { "wglGetPixelFormatAttribfvARB", (void *) wglGetPixelFormatAttribfvARB, NULL, NULL},
1487     { "wglGetPixelFormatAttribivARB", (void *) wglGetPixelFormatAttribivARB, NULL, NULL},
1488     { "wglGetSwapIntervalEXT", (void *) wglGetSwapIntervalEXT, NULL, NULL},
1489     { "wglMakeContextCurrentARB", (void *) wglMakeContextCurrentARB, NULL, NULL },
1490     { "wglQueryPbufferARB", (void *) wglQueryPbufferARB, NULL, NULL},
1491     { "wglReleasePbufferDCARB", (void *) wglReleasePbufferDCARB, NULL, NULL},
1492     { "wglReleaseTexImageARB", (void *) wglReleaseTexImageARB, NULL, NULL},
1493     { "wglSetPbufferAttribARB", (void *) wglSetPbufferAttribARB, NULL, NULL},
1494     { "wglSwapIntervalEXT", (void *) wglSwapIntervalEXT, NULL, NULL}
1495 };
1496 int wgl_extension_registry_size = sizeof(wgl_extension_registry) / sizeof(wgl_extension_registry[0]);