dlls/opengl32/tests/opengl.c

   1 /*
   2  * Some tests for OpenGL functions
   3  *
   4  * Copyright (C) 2007-2008 Roderick Colenbrander
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <windows.h>
  22 #include <wingdi.h>
  23 #include "wine/test.h"
  24
  25 const unsigned char * WINAPI glGetString(unsigned int);
  26 #define GL_VENDOR 0x1F00
  27 #define GL_RENDERER 0x1F01
  28 #define GL_VERSION 0x1F02
  29
  30 #define MAX_FORMATS 256
  31 typedef void* HPBUFFERARB;
  32
  33 /* WGL_ARB_create_context */
  34 HGLRC (WINAPI *pwglCreateContextAttribsARB)(HDC hDC, HGLRC hShareContext, const int *attribList);
  35 /* GetLastError */
  36 #define ERROR_INVALID_VERSION_ARB 0x2095
  37 #define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
  38 #define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
  39 #define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
  40 #define WGL_CONTEXT_FLAGS_ARB 0x2094
  41 /* Flags for WGL_CONTEXT_FLAGS_ARB */
  42 #define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
  43 #define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB  0x0002
  44
  45 /* WGL_ARB_extensions_string */
  46 static const char* (WINAPI *pwglGetExtensionsStringARB)(HDC);
  47 static int (WINAPI *pwglReleasePbufferDCARB)(HPBUFFERARB, HDC);
  48
  49 /* WGL_ARB_make_current_read */
  50 static BOOL (WINAPI *pwglMakeContextCurrentARB)(HDC hdraw, HDC hread, HGLRC hglrc);
  51 static HDC (WINAPI *pwglGetCurrentReadDCARB)();
  52
  53 /* WGL_ARB_pixel_format */
  54 #define WGL_ACCELERATION_ARB 0x2003
  55 #define WGL_COLOR_BITS_ARB 0x2014
  56 #define WGL_RED_BITS_ARB   0x2015
  57 #define WGL_GREEN_BITS_ARB 0x2017
  58 #define WGL_BLUE_BITS_ARB  0x2019
  59 #define WGL_ALPHA_BITS_ARB 0x201B
  60 #define WGL_SUPPORT_GDI_ARB   0x200F
  61 #define WGL_DOUBLE_BUFFER_ARB 0x2011
  62 #define WGL_NO_ACCELERATION_ARB        0x2025
  63 #define WGL_GENERIC_ACCELERATION_ARB   0x2026
  64 #define WGL_FULL_ACCELERATION_ARB      0x2027
  65
  66 static BOOL (WINAPI *pwglChoosePixelFormatARB)(HDC, const int *, const FLOAT *, UINT, int *, UINT *);
  67 static BOOL (WINAPI *pwglGetPixelFormatAttribivARB)(HDC, int, int, UINT, const int *, int *);
  68
  69 /* WGL_ARB_pbuffer */
  70 #define WGL_DRAW_TO_PBUFFER_ARB 0x202D
  71 static HPBUFFERARB* (WINAPI *pwglCreatePbufferARB)(HDC, int, int, int, const int *);
  72 static HDC (WINAPI *pwglGetPbufferDCARB)(HPBUFFERARB);
  73
  74 static const char* wgl_extensions = NULL;
  75
  76 static void init_functions(void)
  77 {
  78 #define GET_PROC(func) \
  79     p ## func = (void*)wglGetProcAddress(#func); \
  80     if(!p ## func) \
  81       trace("wglGetProcAddress(%s) failed\n", #func);
  82
  83     /* WGL_ARB_create_context */
  84     GET_PROC(wglCreateContextAttribsARB);
  85
  86     /* WGL_ARB_extensions_string */
  87     GET_PROC(wglGetExtensionsStringARB)
  88
  89     /* WGL_ARB_make_current_read */
  90     GET_PROC(wglMakeContextCurrentARB);
  91     GET_PROC(wglGetCurrentReadDCARB);
  92
  93     /* WGL_ARB_pixel_format */
  94     GET_PROC(wglChoosePixelFormatARB)
  95     GET_PROC(wglGetPixelFormatAttribivARB)
  96
  97     /* WGL_ARB_pbuffer */
  98     GET_PROC(wglCreatePbufferARB)
  99     GET_PROC(wglGetPbufferDCARB)
 100     GET_PROC(wglReleasePbufferDCARB)
 101
 102 #undef GET_PROC
 103 }
 104
 105 static void test_pbuffers(HDC hdc)
 106 {
 107     const int iAttribList[] = { WGL_DRAW_TO_PBUFFER_ARB, 1, /* Request pbuffer support */
 108                                 0 };
 109     int iFormats[MAX_FORMATS];
 110     unsigned int nOnscreenFormats;
 111     unsigned int nFormats;
 112     int i, res;
 113     int iPixelFormat = 0;
 114
 115     nOnscreenFormats = DescribePixelFormat(hdc, 0, 0, NULL);
 116
 117     /* When you want to render to a pbuffer you need to call wglGetPbufferDCARB which
 118      * returns a 'magic' HDC which you can then pass to wglMakeCurrent to switch rendering
 119      * to the pbuffer. Below some tests are performed on what happens if you use standard WGL calls
 120      * on this 'magic' HDC for both a pixelformat that support onscreen and offscreen rendering
 121      * and a pixelformat that's only available for offscreen rendering (this means that only
 122      * wglChoosePixelFormatARB and friends know about the format.
 123      *
 124      * The first thing we need are pixelformats with pbuffer capabilities.
 125      */
 126     res = pwglChoosePixelFormatARB(hdc, iAttribList, NULL, MAX_FORMATS, iFormats, &nFormats);
 127     if(res <= 0)
 128     {
 129         skip("No pbuffer compatible formats found while WGL_ARB_pbuffer is supported\n");
 130         return;
 131     }
 132     trace("nOnscreenFormats: %d\n", nOnscreenFormats);
 133     trace("Total number of pbuffer capable pixelformats: %d\n", nFormats);
 134
 135     /* Try to select an onscreen pixelformat out of the list */
 136     for(i=0; i < nFormats; i++)
 137     {
 138         /* Check if the format is onscreen, if it is choose it */
 139         if(iFormats[i] <= nOnscreenFormats)
 140         {
 141             iPixelFormat = iFormats[i];
 142             trace("Selected iPixelFormat=%d\n", iPixelFormat);
 143             break;
 144         }
 145     }
 146
 147     /* A video driver supports a large number of onscreen and offscreen pixelformats.
 148      * The traditional WGL calls only see a subset of the whole pixelformat list. First
 149      * of all they only see the onscreen formats (the offscreen formats are at the end of the
 150      * pixelformat list) and second extended pixelformat capabilities are hidden from the
 151      * standard WGL calls. Only functions that depend on WGL_ARB_pixel_format can see them.
 152      *
 153      * Below we check if the pixelformat is also supported onscreen.
 154      */
 155     if(iPixelFormat != 0)
 156     {
 157         HDC pbuffer_hdc;
 158         HPBUFFERARB pbuffer = pwglCreatePbufferARB(hdc, iPixelFormat, 640 /* width */, 480 /* height */, NULL);
 159         if(!pbuffer)
 160             skip("Pbuffer creation failed!\n");
 161
 162         /* Test the pixelformat returned by GetPixelFormat on a pbuffer as the behavior is not clear */
 163         pbuffer_hdc = pwglGetPbufferDCARB(pbuffer);
 164         res = GetPixelFormat(pbuffer_hdc);
 165         ok(res == iPixelFormat, "Unexpected iPixelFormat=%d returned by GetPixelFormat for format %d\n", res, iPixelFormat);
 166         trace("iPixelFormat returned by GetPixelFormat: %d\n", res);
 167         trace("PixelFormat from wglChoosePixelFormatARB: %d\n", iPixelFormat);
 168
 169         pwglReleasePbufferDCARB(pbuffer, hdc);
 170     }
 171     else skip("Pbuffer test for onscreen pixelformat skipped as no onscreen format with pbuffer capabilities have been found\n");
 172
 173     /* Search for a real offscreen format */
 174     for(i=0, iPixelFormat=0; i<nFormats; i++)
 175     {
 176         if(iFormats[i] > nOnscreenFormats)
 177         {
 178             iPixelFormat = iFormats[i];
 179             trace("Selected iPixelFormat: %d\n", iPixelFormat);
 180             break;
 181         }
 182     }
 183
 184     if(iPixelFormat != 0)
 185     {
 186         HDC pbuffer_hdc;
 187         HPBUFFERARB pbuffer = pwglCreatePbufferARB(hdc, iPixelFormat, 640 /* width */, 480 /* height */, NULL);
 188         if(!pbuffer)
 189             skip("Pbuffer creation failed!\n");
 190
 191         /* Test the pixelformat returned by GetPixelFormat on a pbuffer as the behavior is not clear */
 192         pbuffer_hdc = pwglGetPbufferDCARB(pbuffer);
 193         res = GetPixelFormat(pbuffer_hdc);
 194
 195         ok(res == 1, "Unexpected iPixelFormat=%d (1 expected) returned by GetPixelFormat for offscreen format %d\n", res, iPixelFormat);
 196         trace("iPixelFormat returned by GetPixelFormat: %d\n", res);
 197         trace("PixelFormat from wglChoosePixelFormatARB: %d\n", iPixelFormat);
 198         pwglReleasePbufferDCARB(pbuffer, hdc);
 199     }
 200     else skip("Pbuffer test for offscreen pixelformat skipped as no offscreen-only format with pbuffer capabilities has been found\n");
 201 }
 202
 203 static void test_setpixelformat(HDC winhdc)
 204 {
 205     int res = 0;
 206     int nCfgs;
 207     int pf;
 208     int i;
 209     HWND hwnd;
 210     PIXELFORMATDESCRIPTOR pfd = {
 211         sizeof(PIXELFORMATDESCRIPTOR),
 212         1,                     /* version */
 213         PFD_DRAW_TO_WINDOW |
 214         PFD_SUPPORT_OPENGL |
 215         PFD_DOUBLEBUFFER,
 216         PFD_TYPE_RGBA,
 217         24,                    /* 24-bit color depth */
 218         0, 0, 0, 0, 0, 0,      /* color bits */
 219         0,                     /* alpha buffer */
 220         0,                     /* shift bit */
 221         0,                     /* accumulation buffer */
 222         0, 0, 0, 0,            /* accum bits */
 223         32,                    /* z-buffer */
 224         0,                     /* stencil buffer */
 225         0,                     /* auxiliary buffer */
 226         PFD_MAIN_PLANE,        /* main layer */
 227         0,                     /* reserved */
 228         0, 0, 0                /* layer masks */
 229     };
 230
 231     HDC hdc = GetDC(0);
 232     ok(hdc != 0, "GetDC(0) failed!\n");
 233
 234     /* This should pass even on the main device context */
 235     pf = ChoosePixelFormat(hdc, &pfd);
 236     ok(pf != 0, "ChoosePixelFormat failed on main device context\n");
 237
 238     /* SetPixelFormat on the main device context 'X root window' should fail,
 239      * but some broken drivers allow it
 240      */
 241     res = SetPixelFormat(hdc, pf, &pfd);
 242     trace("SetPixelFormat on main device context %s\n", res ? "succeeded" : "failed");
 243
 244     /* Setting the same format that was set on the HDC is allowed; other
 245        formats fail */
 246     nCfgs = DescribePixelFormat(winhdc, 0, 0, NULL);
 247     pf = GetPixelFormat(winhdc);
 248     for(i = 1;i <= nCfgs;i++)
 249     {
 250         int res = SetPixelFormat(winhdc, i, NULL);
 251         if(i == pf) ok(res, "Failed to set the same pixel format\n");
 252         else ok(!res, "Unexpectedly set an alternate pixel format\n");
 253     }
 254
 255     hwnd = CreateWindow("static", "Title", WS_OVERLAPPEDWINDOW,
 256                         10, 10, 200, 200, NULL, NULL, NULL, NULL);
 257     ok(hwnd != NULL, "err: %d\n", GetLastError());
 258     if (hwnd)
 259     {
 260         HDC hdc = GetDC( hwnd );
 261         pf = ChoosePixelFormat( hdc, &pfd );
 262         ok( pf != 0, "ChoosePixelFormat failed\n" );
 263         res = SetPixelFormat( hdc, pf, &pfd );
 264         ok( res != 0, "SetPixelFormat failed\n" );
 265         i = GetPixelFormat( hdc );
 266         ok( i == pf, "GetPixelFormat returned wrong format %d/%d\n", i, pf );
 267         ReleaseDC( hwnd, hdc );
 268         hdc = GetWindowDC( hwnd );
 269         i = GetPixelFormat( hdc );
 270         ok( i == pf, "GetPixelFormat returned wrong format %d/%d\n", i, pf );
 271         ReleaseDC( hwnd, hdc );
 272         DestroyWindow( hwnd );
 273     }
 274
 275     hwnd = CreateWindow("static", "Title", WS_OVERLAPPEDWINDOW,
 276                         10, 10, 200, 200, NULL, NULL, NULL, NULL);
 277     ok(hwnd != NULL, "err: %d\n", GetLastError());
 278     if (hwnd)
 279     {
 280         HDC hdc = GetWindowDC( hwnd );
 281         pf = ChoosePixelFormat( hdc, &pfd );
 282         ok( pf != 0, "ChoosePixelFormat failed\n" );
 283         res = SetPixelFormat( hdc, pf, &pfd );
 284         ok( res != 0, "SetPixelFormat failed\n" );
 285         i = GetPixelFormat( hdc );
 286         ok( i == pf, "GetPixelFormat returned wrong format %d/%d\n", i, pf );
 287         ReleaseDC( hwnd, hdc );
 288         DestroyWindow( hwnd );
 289     }
 290 }
 291
 292 static void test_sharelists(HDC winhdc)
 293 {
 294     HGLRC hglrc1, hglrc2, hglrc3;
 295     int res;
 296
 297     hglrc1 = wglCreateContext(winhdc);
 298     res = wglShareLists(0, 0);
 299     ok(res == FALSE, "Sharing display lists for no contexts passed!\n");
 300
 301     /* Test 1: Create a context and just share lists without doing anything special */
 302     hglrc2 = wglCreateContext(winhdc);
 303     if(hglrc2)
 304     {
 305         res = wglShareLists(hglrc1, hglrc2);
 306         ok(res, "Sharing of display lists failed\n");
 307         wglDeleteContext(hglrc2);
 308     }
 309
 310     /* Test 2: Share display lists with a 'destination' context which has been made current */
 311     hglrc2 = wglCreateContext(winhdc);
 312     if(hglrc2)
 313     {
 314         res = wglMakeCurrent(winhdc, hglrc2);
 315         ok(res, "Make current failed\n");
 316         res = wglShareLists(hglrc1, hglrc2);
 317         todo_wine ok(res, "Sharing display lists with a destination context which has been made current passed\n");
 318         wglMakeCurrent(0, 0);
 319         wglDeleteContext(hglrc2);
 320     }
 321
 322     /* Test 3: Share display lists with a context which already shares display lists with another context.
 323      * According to MSDN the second paramater can't share any display lists but some buggy drivers might allow it */
 324     hglrc3 = wglCreateContext(winhdc);
 325     if(hglrc3)
 326     {
 327         res = wglShareLists(hglrc3, hglrc1);
 328         ok(res == FALSE, "Sharing of display lists failed for a context which already shared lists before\n");
 329         wglDeleteContext(hglrc3);
 330     }
 331
 332     /* Test 4: Share display lists with a 'source' context which has been made current */
 333     hglrc2 = wglCreateContext(winhdc);
 334     if(hglrc2)
 335     {
 336         res = wglMakeCurrent(winhdc, hglrc1);
 337         ok(res, "Make current failed\n");
 338         res = wglShareLists(hglrc1, hglrc2);
 339         ok(res, "Sharing display lists with a source context which has been made current passed\n");
 340         wglMakeCurrent(0, 0);
 341         wglDeleteContext(hglrc2);
 342     }
 343 }
 344
 345 static void test_makecurrent(HDC winhdc)
 346 {
 347     BOOL ret;
 348     HGLRC hglrc;
 349
 350     hglrc = wglCreateContext(winhdc);
 351     ok( hglrc != 0, "wglCreateContext failed\n" );
 352
 353     ret = wglMakeCurrent( winhdc, hglrc );
 354     ok( ret, "wglMakeCurrent failed\n" );
 355
 356     ok( wglGetCurrentContext() == hglrc, "wrong context\n" );
 357 }
 358
 359 static void test_colorbits(HDC hdc)
 360 {
 361     const int iAttribList[] = { WGL_COLOR_BITS_ARB, WGL_RED_BITS_ARB, WGL_GREEN_BITS_ARB,
 362                                 WGL_BLUE_BITS_ARB, WGL_ALPHA_BITS_ARB };
 363     int iAttribRet[sizeof(iAttribList)/sizeof(iAttribList[0])];
 364     const int iAttribs[] = { WGL_ALPHA_BITS_ARB, 1, 0 };
 365     unsigned int nFormats;
 366     int res;
 367     int iPixelFormat = 0;
 368
 369     if (!pwglChoosePixelFormatARB)
 370     {
 371         win_skip("wglChoosePixelFormatARB is not available\n");
 372         return;
 373     }
 374
 375     /* We need a pixel format with at least one bit of alpha */
 376     res = pwglChoosePixelFormatARB(hdc, iAttribs, NULL, 1, &iPixelFormat, &nFormats);
 377     if(res == FALSE || nFormats == 0)
 378     {
 379         skip("No suitable pixel formats found\n");
 380         return;
 381     }
 382
 383     res = pwglGetPixelFormatAttribivARB(hdc, iPixelFormat, 0,
 384               sizeof(iAttribList)/sizeof(iAttribList[0]), iAttribList, iAttribRet);
 385     if(res == FALSE)
 386     {
 387         skip("wglGetPixelFormatAttribivARB failed\n");
 388         return;
 389     }
 390     iAttribRet[1] += iAttribRet[2]+iAttribRet[3]+iAttribRet[4];
 391     ok(iAttribRet[0] == iAttribRet[1], "WGL_COLOR_BITS_ARB (%d) does not equal R+G+B+A (%d)!\n",
 392                                        iAttribRet[0], iAttribRet[1]);
 393 }
 394
 395 static void test_gdi_dbuf(HDC hdc)
 396 {
 397     const int iAttribList[] = { WGL_SUPPORT_GDI_ARB, WGL_DOUBLE_BUFFER_ARB };
 398     int iAttribRet[sizeof(iAttribList)/sizeof(iAttribList[0])];
 399     unsigned int nFormats;
 400     int iPixelFormat;
 401     int res;
 402
 403     if (!pwglGetPixelFormatAttribivARB)
 404     {
 405         win_skip("wglGetPixelFormatAttribivARB is not available\n");
 406         return;
 407     }
 408
 409     nFormats = DescribePixelFormat(hdc, 0, 0, NULL);
 410     for(iPixelFormat = 1;iPixelFormat <= nFormats;iPixelFormat++)
 411     {
 412         res = pwglGetPixelFormatAttribivARB(hdc, iPixelFormat, 0,
 413                   sizeof(iAttribList)/sizeof(iAttribList[0]), iAttribList,
 414                   iAttribRet);
 415         ok(res!=FALSE, "wglGetPixelFormatAttribivARB failed for pixel format %d\n", iPixelFormat);
 416         if(res == FALSE)
 417             continue;
 418
 419         ok(!(iAttribRet[0] && iAttribRet[1]), "GDI support and double buffering on pixel format %d\n", iPixelFormat);
 420     }
 421 }
 422
 423 static void test_acceleration(HDC hdc)
 424 {
 425     const int iAttribList[] = { WGL_ACCELERATION_ARB };
 426     int iAttribRet[sizeof(iAttribList)/sizeof(iAttribList[0])];
 427     unsigned int nFormats;
 428     int iPixelFormat;
 429     int res;
 430     PIXELFORMATDESCRIPTOR pfd;
 431
 432     if (!pwglGetPixelFormatAttribivARB)
 433     {
 434         win_skip("wglGetPixelFormatAttribivARB is not available\n");
 435         return;
 436     }
 437
 438     nFormats = DescribePixelFormat(hdc, 0, 0, NULL);
 439     for(iPixelFormat = 1; iPixelFormat <= nFormats; iPixelFormat++)
 440     {
 441         res = pwglGetPixelFormatAttribivARB(hdc, iPixelFormat, 0,
 442                   sizeof(iAttribList)/sizeof(iAttribList[0]), iAttribList,
 443                   iAttribRet);
 444         ok(res!=FALSE, "wglGetPixelFormatAttribivARB failed for pixel format %d\n", iPixelFormat);
 445         if(res == FALSE)
 446             continue;
 447
 448         memset(&pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
 449         DescribePixelFormat(hdc, iPixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
 450
 451         switch(iAttribRet[0])
 452         {
 453             case WGL_NO_ACCELERATION_ARB:
 454                 ok( (pfd.dwFlags & (PFD_GENERIC_FORMAT | PFD_GENERIC_ACCELERATED)) == PFD_GENERIC_FORMAT , "Expected only PFD_GENERIC_FORMAT to be set for WGL_NO_ACCELERATION_ARB!: iPixelFormat=%d, dwFlags=%x!\n", iPixelFormat, pfd.dwFlags);
 455                 break;
 456             case WGL_GENERIC_ACCELERATION_ARB:
 457                 ok( (pfd.dwFlags & (PFD_GENERIC_FORMAT | PFD_GENERIC_ACCELERATED)) == (PFD_GENERIC_FORMAT | PFD_GENERIC_ACCELERATED), "Expected both PFD_GENERIC_FORMAT and PFD_GENERIC_ACCELERATION to be set for WGL_GENERIC_ACCELERATION_ARB: iPixelFormat=%d, dwFlags=%x!\n", iPixelFormat, pfd.dwFlags);
 458                 break;
 459             case WGL_FULL_ACCELERATION_ARB:
 460                 ok( (pfd.dwFlags & (PFD_GENERIC_FORMAT | PFD_GENERIC_ACCELERATED)) == 0, "Expected no PFD_GENERIC_FORMAT/_ACCELERATION to be set for WGL_FULL_ACCELERATION_ARB: iPixelFormat=%d, dwFlags=%x!\n", iPixelFormat, pfd.dwFlags);
 461                 break;
 462         }
 463     }
 464 }
 465
 466 static void test_make_current_read(HDC hdc)
 467 {
 468     int res;
 469     HDC hread;
 470     HGLRC hglrc = wglCreateContext(hdc);
 471
 472     if(!hglrc)
 473     {
 474         skip("wglCreateContext failed!\n");
 475         return;
 476     }
 477
 478     res = wglMakeCurrent(hdc, hglrc);
 479     if(!res)
 480     {
 481         skip("wglMakeCurrent failed!\n");
 482         return;
 483     }
 484
 485     /* Test what wglGetCurrentReadDCARB does for wglMakeCurrent as the spec doesn't mention it */
 486     hread = pwglGetCurrentReadDCARB();
 487     trace("hread %p, hdc %p\n", hread, hdc);
 488     ok(hread == hdc, "wglGetCurrentReadDCARB failed for standard wglMakeCurrent\n");
 489
 490     pwglMakeContextCurrentARB(hdc, hdc, hglrc);
 491     hread = pwglGetCurrentReadDCARB();
 492     ok(hread == hdc, "wglGetCurrentReadDCARB failed for wglMakeContextCurrent\n");
 493 }
 494
 495 static void test_dc(HWND hwnd, HDC hdc)
 496 {
 497     int pf1, pf2;
 498     HDC hdc2;
 499
 500     /* Get another DC and make sure it has the same pixel format */
 501     hdc2 = GetDC(hwnd);
 502     if(hdc != hdc2)
 503     {
 504         pf1 = GetPixelFormat(hdc);
 505         pf2 = GetPixelFormat(hdc2);
 506         ok(pf1 == pf2, "Second DC does not have the same format (%d != %d)\n", pf1, pf2);
 507     }
 508     else
 509         skip("Could not get a different DC for the window\n");
 510
 511     if(hdc2)
 512     {
 513         ReleaseDC(hwnd, hdc2);
 514         hdc2 = NULL;
 515     }
 516 }
 517
 518 static void test_opengl3(HDC hdc)
 519 {
 520     /* Try to create a context using an invalid OpenGL version namely 0.x */
 521     {
 522         HGLRC gl3Ctx;
 523         int attribs[] = {WGL_CONTEXT_MAJOR_VERSION_ARB, 0, 0};
 524
 525         gl3Ctx = pwglCreateContextAttribsARB(hdc, 0, attribs);
 526         ok(gl3Ctx == 0, "wglCreateContextAttribs with major version=0 should fail!\n");
 527
 528         if(gl3Ctx)
 529             wglDeleteContext(gl3Ctx);
 530     }
 531
 532     /* Try to create a context compatible with OpenGL 1.x; 1.0-2.1 is allowed */
 533     {
 534         HGLRC gl3Ctx;
 535         int attribs[] = {WGL_CONTEXT_MAJOR_VERSION_ARB, 1, 0};
 536
 537         gl3Ctx = pwglCreateContextAttribsARB(hdc, 0, attribs);
 538         ok(gl3Ctx != 0, "pwglCreateContextAttribsARB for a 1.x context failed!\n");
 539         wglDeleteContext(gl3Ctx);
 540     }
 541
 542     /* Try to pass an invalid HDC */
 543     {
 544         HGLRC gl3Ctx;
 545         DWORD error;
 546         gl3Ctx = pwglCreateContextAttribsARB((HDC)0xdeadbeef, 0, 0);
 547         ok(gl3Ctx == 0, "pwglCreateContextAttribsARB using an invalid HDC passed\n");
 548         error = GetLastError();
 549         todo_wine ok(error == ERROR_DC_NOT_FOUND, "Expected ERROR_DC_NOT_FOUND, got error=%x\n", error);
 550         wglDeleteContext(gl3Ctx);
 551     }
 552
 553     /* Try to pass an invalid shareList */
 554     {
 555         HGLRC gl3Ctx;
 556         DWORD error;
 557         gl3Ctx = pwglCreateContextAttribsARB(hdc, (HGLRC)0xdeadbeef, 0);
 558         ok(gl3Ctx == 0, "pwglCreateContextAttribsARB using an invalid shareList passed\n");
 559         error = GetLastError();
 560         todo_wine ok(error == ERROR_INVALID_OPERATION, "Expected ERROR_INVALID_OPERATION, got error=%x\n", error);
 561         wglDeleteContext(gl3Ctx);
 562     }
 563
 564     /* Try to create an OpenGL 3.0 context */
 565     {
 566         int attribs[] = {WGL_CONTEXT_MAJOR_VERSION_ARB, 3, WGL_CONTEXT_MINOR_VERSION_ARB, 0, 0};
 567         HGLRC gl3Ctx = pwglCreateContextAttribsARB(hdc, 0, attribs);
 568
 569         if(gl3Ctx == NULL)
 570         {
 571             skip("Skipping the rest of the WGL_ARB_create_context test due to lack of OpenGL 3.0\n");
 572             return;
 573         }
 574
 575         wglDeleteContext(gl3Ctx);
 576     }
 577
 578     /* Test matching an OpenGL 3.0 context with an older one, OpenGL 3.0 should allow it until the new object model is introduced in a future revision */
 579     {
 580         HGLRC glCtx = wglCreateContext(hdc);
 581
 582         int attribs[] = {WGL_CONTEXT_MAJOR_VERSION_ARB, 3, WGL_CONTEXT_MINOR_VERSION_ARB, 0, 0};
 583         int attribs_future[] = {WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, WGL_CONTEXT_MAJOR_VERSION_ARB, 3, WGL_CONTEXT_MINOR_VERSION_ARB, 0, 0};
 584
 585         HGLRC gl3Ctx = pwglCreateContextAttribsARB(hdc, glCtx, attribs);
 586         ok(gl3Ctx != NULL, "Sharing of a display list between OpenGL 3.0 and OpenGL 1.x/2.x failed!\n");
 587         if(gl3Ctx)
 588             wglDeleteContext(gl3Ctx);
 589
 590         gl3Ctx = pwglCreateContextAttribsARB(hdc, glCtx, attribs_future);
 591         ok(gl3Ctx != NULL, "Sharing of a display list between a forward compatible OpenGL 3.0 context and OpenGL 1.x/2.x failed!\n");
 592         if(gl3Ctx)
 593             wglDeleteContext(gl3Ctx);
 594
 595         if(glCtx)
 596             wglDeleteContext(glCtx);
 597     }
 598
 599     /* Try to create an OpenGL 3.0 context and test windowless rendering */
 600     {
 601         HGLRC gl3Ctx;
 602         int attribs[] = {WGL_CONTEXT_MAJOR_VERSION_ARB, 3, WGL_CONTEXT_MINOR_VERSION_ARB, 0, 0};
 603         BOOL res;
 604
 605         gl3Ctx = pwglCreateContextAttribsARB(hdc, 0, attribs);
 606         ok(gl3Ctx != 0, "pwglCreateContextAttribsARB for a 3.0 context failed!\n");
 607
 608         /* OpenGL 3.0 allows offscreen rendering WITHOUT a drawable */
 609         /* NOTE: Nvidia's 177.89 beta drivers don't allow this yet */
 610         res = wglMakeCurrent(0, gl3Ctx);
 611         todo_wine ok(res == TRUE, "OpenGL 3.0 should allow windowless rendering, but the test failed!\n");
 612         if(res)
 613             wglMakeCurrent(0, 0);
 614
 615         if(gl3Ctx)
 616             wglDeleteContext(gl3Ctx);
 617     }
 618 }
 619
 620 START_TEST(opengl)
 621 {
 622     HWND hwnd;
 623     PIXELFORMATDESCRIPTOR pfd = {
 624         sizeof(PIXELFORMATDESCRIPTOR),
 625         1,                     /* version */
 626         PFD_DRAW_TO_WINDOW |
 627         PFD_SUPPORT_OPENGL |
 628         PFD_DOUBLEBUFFER,
 629         PFD_TYPE_RGBA,
 630         24,                    /* 24-bit color depth */
 631         0, 0, 0, 0, 0, 0,      /* color bits */
 632         0,                     /* alpha buffer */
 633         0,                     /* shift bit */
 634         0,                     /* accumulation buffer */
 635         0, 0, 0, 0,            /* accum bits */
 636         32,                    /* z-buffer */
 637         0,                     /* stencil buffer */
 638         0,                     /* auxiliary buffer */
 639         PFD_MAIN_PLANE,        /* main layer */
 640         0,                     /* reserved */
 641         0, 0, 0                /* layer masks */
 642     };
 643
 644     hwnd = CreateWindow("static", "Title", WS_OVERLAPPEDWINDOW,
 645                         10, 10, 200, 200, NULL, NULL, NULL, NULL);
 646     ok(hwnd != NULL, "err: %d\n", GetLastError());
 647     if (hwnd)
 648     {
 649         HDC hdc;
 650         int iPixelFormat, res;
 651         HGLRC hglrc;
 652         DWORD error;
 653         ShowWindow(hwnd, SW_SHOW);
 654
 655         hdc = GetDC(hwnd);
 656
 657         iPixelFormat = ChoosePixelFormat(hdc, &pfd);
 658         if(iPixelFormat == 0)
 659         {
 660             /* This should never happen as ChoosePixelFormat always returns a closest match, but currently this fails in Wine if we don't have glX */
 661             win_skip("Unable to find pixel format.\n");
 662             goto cleanup;
 663         }
 664
 665         /* We shouldn't be able to create a context from a hdc which doesn't have a pixel format set */
 666         hglrc = wglCreateContext(hdc);
 667         ok(hglrc == NULL, "wglCreateContext should fail when no pixel format has been set, but it passed\n");
 668         error = GetLastError();
 669         ok(error == ERROR_INVALID_PIXEL_FORMAT, "expected ERROR_INVALID_PIXEL_FORMAT for wglCreateContext without a pixelformat set, but received %#x\n", error);
 670
 671         res = SetPixelFormat(hdc, iPixelFormat, &pfd);
 672         ok(res, "SetPixelformat failed: %x\n", GetLastError());
 673
 674         test_dc(hwnd, hdc);
 675
 676         hglrc = wglCreateContext(hdc);
 677         res = wglMakeCurrent(hdc, hglrc);
 678         ok(res, "wglMakeCurrent failed!\n");
 679         if(res)
 680         {
 681             trace("OpenGL renderer: %s\n", glGetString(GL_RENDERER));
 682             trace("OpenGL driver version: %s\n", glGetString(GL_VERSION));
 683             trace("OpenGL vendor: %s\n", glGetString(GL_VENDOR));
 684         }
 685         else
 686         {
 687             skip("Skipping OpenGL tests without a current context\n");
 688             return;
 689         }
 690
 691         /* Initialisation of WGL functions depends on an implicit WGL context. For this reason we can't load them before making
 692          * any WGL call :( On Wine this would work but not on real Windows because there can be different implementations (software, ICD, MCD).
 693          */
 694         init_functions();
 695         /* The lack of wglGetExtensionsStringARB in general means broken software rendering or the lack of decent OpenGL support, skip tests in such cases */
 696         if (!pwglGetExtensionsStringARB)
 697         {
 698             win_skip("wglGetExtensionsStringARB is not available\n");
 699             return;
 700         }
 701
 702         test_makecurrent(hdc);
 703         test_setpixelformat(hdc);
 704         test_sharelists(hdc);
 705         test_colorbits(hdc);
 706         test_gdi_dbuf(hdc);
 707         test_acceleration(hdc);
 708
 709         wgl_extensions = pwglGetExtensionsStringARB(hdc);
 710         if(wgl_extensions == NULL) skip("Skipping opengl32 tests because this OpenGL implementation doesn't support WGL extensions!\n");
 711
 712         if(strstr(wgl_extensions, "WGL_ARB_create_context"))
 713             test_opengl3(hdc);
 714
 715         if(strstr(wgl_extensions, "WGL_ARB_make_current_read"))
 716             test_make_current_read(hdc);
 717         else
 718             skip("WGL_ARB_make_current_read not supported, skipping test\n");
 719
 720         if(strstr(wgl_extensions, "WGL_ARB_pbuffer"))
 721             test_pbuffers(hdc);
 722         else
 723             skip("WGL_ARB_pbuffer not supported, skipping pbuffer test\n");
 724
 725 cleanup:
 726         ReleaseDC(hwnd, hdc);
 727         DestroyWindow(hwnd);
 728     }
 729 }