dlls/opengl32/tests/opengl.c

   1 /*
   2  * Some tests for OpenGL functions
   3  *
   4  * Copyright (C) 2007 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 #define MAX_FORMATS 256
  26 typedef void* HPBUFFERARB;
  27
  28 /* WGL_ARB_extensions_string */
  29 static const char* (WINAPI *pwglGetExtensionsStringARB)(HDC);
  30 static int (WINAPI *pwglReleasePbufferDCARB)(HPBUFFERARB, HDC);
  31
  32 /* WGL_ARB_make_current_read */
  33 static BOOL (WINAPI *pwglMakeContextCurrentARB)(HDC hdraw, HDC hread, HGLRC hglrc);
  34 static HDC (WINAPI *pwglGetCurrentReadDCARB)();
  35
  36 /* WGL_ARB_pixel_format */
  37 #define WGL_COLOR_BITS_ARB 0x2014
  38 #define WGL_RED_BITS_ARB   0x2015
  39 #define WGL_GREEN_BITS_ARB 0x2017
  40 #define WGL_BLUE_BITS_ARB  0x2019
  41 #define WGL_ALPHA_BITS_ARB 0x201B
  42 #define WGL_SUPPORT_GDI_ARB   0x200F
  43 #define WGL_DOUBLE_BUFFER_ARB 0x2011
  44
  45 static BOOL (WINAPI *pwglChoosePixelFormatARB)(HDC, const int *, const FLOAT *, UINT, int *, UINT *);
  46 static BOOL (WINAPI *pwglGetPixelFormatAttribivARB)(HDC, int, int, UINT, const int *, int *);
  47
  48 /* WGL_ARB_pbuffer */
  49 #define WGL_DRAW_TO_PBUFFER_ARB 0x202D
  50 static HPBUFFERARB* (WINAPI *pwglCreatePbufferARB)(HDC, int, int, int, const int *);
  51 static HDC (WINAPI *pwglGetPbufferDCARB)(HPBUFFERARB);
  52
  53 static const char* wgl_extensions = NULL;
  54
  55 static void init_functions(void)
  56 {
  57 #define GET_PROC(func) \
  58     p ## func = (void*)wglGetProcAddress(#func); \
  59     if(!p ## func) \
  60       trace("wglGetProcAddress(%s) failed\n", #func);
  61
  62     /* WGL_ARB_extensions_string */
  63     GET_PROC(wglGetExtensionsStringARB)
  64
  65     /* WGL_ARB_make_current_read */
  66     GET_PROC(wglMakeContextCurrentARB);
  67     GET_PROC(wglGetCurrentReadDCARB);
  68
  69     /* WGL_ARB_pixel_format */
  70     GET_PROC(wglChoosePixelFormatARB)
  71     GET_PROC(wglGetPixelFormatAttribivARB)
  72
  73     /* WGL_ARB_pbuffer */
  74     GET_PROC(wglCreatePbufferARB)
  75     GET_PROC(wglGetPbufferDCARB)
  76     GET_PROC(wglReleasePbufferDCARB)
  77
  78 #undef GET_PROC
  79 }
  80
  81 static void test_pbuffers(HDC hdc)
  82 {
  83     const int iAttribList[] = { WGL_DRAW_TO_PBUFFER_ARB, 1, /* Request pbuffer support */
  84                                 0 };
  85     int iFormats[MAX_FORMATS];
  86     unsigned int nOnscreenFormats;
  87     unsigned int nFormats;
  88     int i, res;
  89     int iPixelFormat = 0;
  90
  91     nOnscreenFormats = DescribePixelFormat(hdc, 0, 0, NULL);
  92
  93     /* When you want to render to a pbuffer you need to call wglGetPbufferDCARB which
  94      * returns a 'magic' HDC which you can then pass to wglMakeCurrent to switch rendering
  95      * to the pbuffer. Below some tests are performed on what happens if you use standard WGL calls
  96      * on this 'magic' HDC for both a pixelformat that support onscreen and offscreen rendering
  97      * and a pixelformat that's only available for offscreen rendering (this means that only
  98      * wglChoosePixelFormatARB and friends know about the format.
  99      *
 100      * The first thing we need are pixelformats with pbuffer capabilities.
 101      */
 102     res = pwglChoosePixelFormatARB(hdc, iAttribList, NULL, MAX_FORMATS, iFormats, &nFormats);
 103     if(res <= 0)
 104     {
 105         skip("No pbuffer compatible formats found while WGL_ARB_pbuffer is supported\n");
 106         return;
 107     }
 108     trace("nOnscreenFormats: %d\n", nOnscreenFormats);
 109     trace("Total number of pbuffer capable pixelformats: %d\n", nFormats);
 110
 111     /* Try to select an onscreen pixelformat out of the list */
 112     for(i=0; i < nFormats; i++)
 113     {
 114         /* Check if the format is onscreen, if it is choose it */
 115         if(iFormats[i] <= nOnscreenFormats)
 116         {
 117             iPixelFormat = iFormats[i];
 118             trace("Selected iPixelFormat=%d\n", iPixelFormat);
 119             break;
 120         }
 121     }
 122
 123     /* A video driver supports a large number of onscreen and offscreen pixelformats.
 124      * The traditional WGL calls only see a subset of the whole pixelformat list. First
 125      * of all they only see the onscreen formats (the offscreen formats are at the end of the
 126      * pixelformat list) and second extended pixelformat capabilities are hidden from the
 127      * standard WGL calls. Only functions that depend on WGL_ARB_pixel_format can see them.
 128      *
 129      * Below we check if the pixelformat is also supported onscreen.
 130      */
 131     if(iPixelFormat != 0)
 132     {
 133         HDC pbuffer_hdc;
 134         HPBUFFERARB pbuffer = pwglCreatePbufferARB(hdc, iPixelFormat, 640 /* width */, 480 /* height */, NULL);
 135         if(!pbuffer)
 136             skip("Pbuffer creation failed!\n");
 137
 138         /* Test the pixelformat returned by GetPixelFormat on a pbuffer as the behavior is not clear */
 139         pbuffer_hdc = pwglGetPbufferDCARB(pbuffer);
 140         res = GetPixelFormat(pbuffer_hdc);
 141         ok(res == iPixelFormat, "Unexpected iPixelFormat=%d returned by GetPixelFormat for format %d\n", res, iPixelFormat);
 142         trace("iPixelFormat returned by GetPixelFormat: %d\n", res);
 143         trace("PixelFormat from wglChoosePixelFormatARB: %d\n", iPixelFormat);
 144
 145         pwglReleasePbufferDCARB(pbuffer, hdc);
 146     }
 147     else skip("Pbuffer test for onscreen pixelformat skipped as no onscreen format with pbuffer capabilities have been found\n");
 148
 149     /* Search for a real offscreen format */
 150     for(i=0, iPixelFormat=0; i<nFormats; i++)
 151     {
 152         if(iFormats[i] > nOnscreenFormats)
 153         {
 154             iPixelFormat = iFormats[i];
 155             trace("Selected iPixelFormat: %d\n", iPixelFormat);
 156             break;
 157         }
 158     }
 159
 160     if(iPixelFormat != 0)
 161     {
 162         HDC pbuffer_hdc;
 163         HPBUFFERARB pbuffer = pwglCreatePbufferARB(hdc, iPixelFormat, 640 /* width */, 480 /* height */, NULL);
 164         if(!pbuffer)
 165             skip("Pbuffer creation failed!\n");
 166
 167         /* Test the pixelformat returned by GetPixelFormat on a pbuffer as the behavior is not clear */
 168         pbuffer_hdc = pwglGetPbufferDCARB(pbuffer);
 169         res = GetPixelFormat(pbuffer_hdc);
 170
 171         ok(res == 1, "Unexpected iPixelFormat=%d (1 expected) returned by GetPixelFormat for offscreen format %d\n", res, iPixelFormat);
 172         trace("iPixelFormat returned by GetPixelFormat: %d\n", res);
 173         trace("PixelFormat from wglChoosePixelFormatARB: %d\n", iPixelFormat);
 174         pwglReleasePbufferDCARB(pbuffer, hdc);
 175     }
 176     else skip("Pbuffer test for offscreen pixelformat skipped as no offscreen-only format with pbuffer capabilities has been found\n");
 177 }
 178
 179 static void test_setpixelformat(HDC winhdc)
 180 {
 181     int res = 0;
 182     int nCfgs;
 183     int pf;
 184     int i;
 185     PIXELFORMATDESCRIPTOR pfd = {
 186         sizeof(PIXELFORMATDESCRIPTOR),
 187         1,                     /* version */
 188         PFD_DRAW_TO_WINDOW |
 189         PFD_SUPPORT_OPENGL |
 190         PFD_DOUBLEBUFFER,
 191         PFD_TYPE_RGBA,
 192         24,                    /* 24-bit color depth */
 193         0, 0, 0, 0, 0, 0,      /* color bits */
 194         0,                     /* alpha buffer */
 195         0,                     /* shift bit */
 196         0,                     /* accumulation buffer */
 197         0, 0, 0, 0,            /* accum bits */
 198         32,                    /* z-buffer */
 199         0,                     /* stencil buffer */
 200         0,                     /* auxiliary buffer */
 201         PFD_MAIN_PLANE,        /* main layer */
 202         0,                     /* reserved */
 203         0, 0, 0                /* layer masks */
 204     };
 205
 206     HDC hdc = GetDC(0);
 207     ok(hdc != 0, "GetDC(0) failed!\n");
 208
 209     /* This should pass even on the main device context */
 210     pf = ChoosePixelFormat(hdc, &pfd);
 211     ok(pf != 0, "ChoosePixelFormat failed on main device context\n");
 212
 213     /* SetPixelFormat on the main device context 'X root window' should fail */
 214     res = SetPixelFormat(hdc, pf, &pfd);
 215     ok(res == 0, "SetPixelFormat on main device context should fail\n");
 216
 217     /* Setting the same format that was set on the HDC is allowed; other
 218        formats fail */
 219     nCfgs = DescribePixelFormat(winhdc, 0, 0, NULL);
 220     pf = GetPixelFormat(winhdc);
 221     for(i = 1;i <= nCfgs;i++)
 222     {
 223         int res = SetPixelFormat(winhdc, i, NULL);
 224         if(i == pf) ok(res, "Failed to set the same pixel format\n");
 225         else ok(!res, "Unexpectedly set an alternate pixel format\n");
 226     }
 227 }
 228
 229 static void test_colorbits(HDC hdc)
 230 {
 231     const int iAttribList[] = { WGL_COLOR_BITS_ARB, WGL_RED_BITS_ARB, WGL_GREEN_BITS_ARB,
 232                                 WGL_BLUE_BITS_ARB, WGL_ALPHA_BITS_ARB };
 233     int iAttribRet[sizeof(iAttribList)/sizeof(iAttribList[0])];
 234     const int iAttribs[] = { WGL_ALPHA_BITS_ARB, 1, 0 };
 235     unsigned int nFormats;
 236     int res;
 237     int iPixelFormat = 0;
 238
 239     if (!pwglChoosePixelFormatARB)
 240     {
 241         skip("wglChoosePixelFormatARB is not available\n");
 242         return;
 243     }
 244
 245     /* We need a pixel format with at least one bit of alpha */
 246     res = pwglChoosePixelFormatARB(hdc, iAttribs, NULL, 1, &iPixelFormat, &nFormats);
 247     if(res == FALSE || nFormats == 0)
 248     {
 249         skip("No suitable pixel formats found\n");
 250         return;
 251     }
 252
 253     res = pwglGetPixelFormatAttribivARB(hdc, iPixelFormat, 0,
 254               sizeof(iAttribList)/sizeof(iAttribList[0]), iAttribList, iAttribRet);
 255     if(res == FALSE)
 256     {
 257         skip("wglGetPixelFormatAttribivARB failed\n");
 258         return;
 259     }
 260     iAttribRet[1] += iAttribRet[2]+iAttribRet[3]+iAttribRet[4];
 261     ok(iAttribRet[0] == iAttribRet[1], "WGL_COLOR_BITS_ARB (%d) does not equal R+G+B+A (%d)!\n",
 262                                        iAttribRet[0], iAttribRet[1]);
 263 }
 264
 265 static void test_gdi_dbuf(HDC hdc)
 266 {
 267     const int iAttribList[] = { WGL_SUPPORT_GDI_ARB, WGL_DOUBLE_BUFFER_ARB };
 268     int iAttribRet[sizeof(iAttribList)/sizeof(iAttribList[0])];
 269     unsigned int nFormats;
 270     int iPixelFormat;
 271     int res;
 272
 273     if (!pwglGetPixelFormatAttribivARB)
 274     {
 275         skip("wglGetPixelFormatAttribivARB is not available\n");
 276         return;
 277     }
 278
 279     nFormats = DescribePixelFormat(hdc, 0, 0, NULL);
 280     for(iPixelFormat = 1;iPixelFormat <= nFormats;iPixelFormat++)
 281     {
 282         res = pwglGetPixelFormatAttribivARB(hdc, iPixelFormat, 0,
 283                   sizeof(iAttribList)/sizeof(iAttribList[0]), iAttribList,
 284                   iAttribRet);
 285         ok(res!=FALSE, "wglGetPixelFormatAttribivARB failed for pixel format %d\n", iPixelFormat);
 286         if(res == FALSE)
 287             continue;
 288
 289         ok(!(iAttribRet[0] && iAttribRet[1]), "GDI support and double buffering on pixel format %d\n", iPixelFormat);
 290     }
 291 }
 292
 293 static void test_make_current_read(HDC hdc)
 294 {
 295     int res;
 296     HDC hread;
 297     HGLRC hglrc = wglCreateContext(hdc);
 298
 299     if(!hglrc)
 300     {
 301         skip("wglCreateContext failed!\n");
 302         return;
 303     }
 304
 305     res = wglMakeCurrent(hdc, hglrc);
 306     if(!res)
 307     {
 308         skip("wglMakeCurrent failed!\n");
 309         return;
 310     }
 311
 312     /* Test what wglGetCurrentReadDCARB does for wglMakeCurrent as the spec doesn't mention it */
 313     hread = pwglGetCurrentReadDCARB();
 314     trace("hread %p, hdc %p\n", hread, hdc);
 315     ok(hread == hdc, "wglGetCurrentReadDCARB failed for standard wglMakeCurrent\n");
 316
 317     pwglMakeContextCurrentARB(hdc, hdc, hglrc);
 318     hread = pwglGetCurrentReadDCARB();
 319     ok(hread == hdc, "wglGetCurrentReadDCARB failed for wglMakeContextCurrent\n");
 320 }
 321
 322 static void test_dc(HWND hwnd, HDC hdc)
 323 {
 324     int pf1, pf2;
 325     HDC hdc2;
 326
 327     /* Get another DC and make sure it has the same pixel format */
 328     hdc2 = GetDC(hwnd);
 329     if(hdc != hdc2)
 330     {
 331         pf1 = GetPixelFormat(hdc);
 332         pf2 = GetPixelFormat(hdc2);
 333         ok(pf1 == pf2, "Second DC does not have the same format (%d != %d)\n", pf1, pf2);
 334     }
 335     else
 336         skip("Could not get a different DC for the window\n");
 337
 338     if(hdc2)
 339     {
 340         ReleaseDC(hwnd, hdc2);
 341         hdc2 = NULL;
 342     }
 343 }
 344
 345 START_TEST(opengl)
 346 {
 347     HWND hwnd;
 348     PIXELFORMATDESCRIPTOR pfd = {
 349         sizeof(PIXELFORMATDESCRIPTOR),
 350         1,                     /* version */
 351         PFD_DRAW_TO_WINDOW |
 352         PFD_SUPPORT_OPENGL |
 353         PFD_DOUBLEBUFFER,
 354         PFD_TYPE_RGBA,
 355         24,                    /* 24-bit color depth */
 356         0, 0, 0, 0, 0, 0,      /* color bits */
 357         0,                     /* alpha buffer */
 358         0,                     /* shift bit */
 359         0,                     /* accumulation buffer */
 360         0, 0, 0, 0,            /* accum bits */
 361         32,                    /* z-buffer */
 362         0,                     /* stencil buffer */
 363         0,                     /* auxiliary buffer */
 364         PFD_MAIN_PLANE,        /* main layer */
 365         0,                     /* reserved */
 366         0, 0, 0                /* layer masks */
 367     };
 368
 369     hwnd = CreateWindow("static", "Title", WS_OVERLAPPEDWINDOW,
 370                         10, 10, 200, 200, NULL, NULL, NULL, NULL);
 371     ok(hwnd != NULL, "err: %d\n", GetLastError());
 372     if (hwnd)
 373     {
 374         HDC hdc;
 375         int iPixelFormat, res;
 376         HGLRC hglrc;
 377         DWORD error;
 378         ShowWindow(hwnd, SW_SHOW);
 379
 380         hdc = GetDC(hwnd);
 381
 382         iPixelFormat = ChoosePixelFormat(hdc, &pfd);
 383         ok(iPixelFormat > 0, "No pixelformat found!\n"); /* This should never happen as ChoosePixelFormat always returns a closest match */
 384
 385         /* We shouldn't be able to create a context from a hdc which doesn't have a pixel format set */
 386         hglrc = wglCreateContext(hdc);
 387         ok(hglrc == NULL, "wglCreateContext should fail when no pixel format has been set, but it passed\n");
 388         error = GetLastError();
 389         ok(error == ERROR_INVALID_PIXEL_FORMAT, "expected ERROR_INVALID_PIXEL_FORMAT for wglCreateContext without a pixelformat set, but received %#x\n", error);
 390
 391         res = SetPixelFormat(hdc, iPixelFormat, &pfd);
 392         ok(res, "SetPixelformat failed: %x\n", GetLastError());
 393
 394         test_dc(hwnd, hdc);
 395
 396         hglrc = wglCreateContext(hdc);
 397         res = wglMakeCurrent(hdc, hglrc);
 398         ok(res, "wglMakeCurrent failed!\n");
 399         init_functions();
 400
 401         test_setpixelformat(hdc);
 402         test_colorbits(hdc);
 403         test_gdi_dbuf(hdc);
 404
 405         if (!pwglGetExtensionsStringARB)
 406         {
 407             skip("wglGetExtensionsStringARB is not available\n");
 408             DestroyWindow(hwnd);
 409             return;
 410         }
 411
 412         wgl_extensions = pwglGetExtensionsStringARB(hdc);
 413         if(wgl_extensions == NULL) skip("Skipping opengl32 tests because this OpenGL implementation doesn't support WGL extensions!\n");
 414
 415         if(strstr(wgl_extensions, "WGL_ARB_make_current_read"))
 416             test_make_current_read(hdc);
 417         else
 418             trace("WGL_ARB_make_current_read not supported, skipping test\n");
 419
 420         if(strstr(wgl_extensions, "WGL_ARB_pbuffer"))
 421             test_pbuffers(hdc);
 422         else
 423             trace("WGL_ARB_pbuffer not supported, skipping pbuffer test\n");
 424
 425         DestroyWindow(hwnd);
 426     }
 427 }