mirror of
https://github.com/nigels-com/glew.git
synced 2024-11-24 23:05:06 +00:00
450 lines
12 KiB
C
450 lines
12 KiB
C
}
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#endif /* _WIN32 */
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/* ------------------------------------------------------------------------ */
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int main (int argc, char** argv)
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{
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GLuint err;
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struct createParams params =
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{
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#if defined(GLEW_OSMESA)
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#elif defined(_WIN32)
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-1, /* pixelformat */
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#elif !defined(__HAIKU__) && !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
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"", /* display */
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-1, /* visual */
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#endif
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0, /* major */
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0, /* minor */
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0, /* profile mask */
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0 /* flags */
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};
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if (glewParseArgs(argc-1, argv+1, ¶ms))
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{
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fprintf(stderr, "Usage: glewinfo "
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#if defined(GLEW_OSMESA)
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#elif defined(_WIN32)
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"[-pf <pixelformat>] "
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#elif !defined(__HAIKU__) && !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
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"[-display <display>] "
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"[-visual <visual id>] "
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#endif
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"[-version <OpenGL version>] "
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"[-profile core|compatibility] "
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"[-flag debug|forward]"
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"\n");
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return 1;
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}
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if (GL_TRUE == glewCreateContext(¶ms))
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{
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fprintf(stderr, "Error: glewCreateContext failed\n");
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glewDestroyContext();
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return 1;
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}
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glewExperimental = GL_TRUE;
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err = glewInit();
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if (GLEW_OK != err)
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{
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fprintf(stderr, "Error [main]: glewInit failed: %s\n", glewGetErrorString(err));
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glewDestroyContext();
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return 1;
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}
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#if defined(_WIN32)
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#if defined(_MSC_VER) && (_MSC_VER >= 1400)
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if (fopen_s(&f, "glewinfo.txt", "w") != 0)
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f = stdout;
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#else
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f = fopen("glewinfo.txt", "w");
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#endif
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if (f == NULL) f = stdout;
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#else
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f = stdout;
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#endif
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fprintf(f, "---------------------------\n");
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fprintf(f, " GLEW Extension Info\n");
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fprintf(f, "---------------------------\n\n");
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fprintf(f, "GLEW version %s\n", glewGetString(GLEW_VERSION));
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#if defined(GLEW_OSMESA)
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#elif defined(_WIN32)
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fprintf(f, "Reporting capabilities of pixelformat %d\n", params.pixelformat);
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#elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
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fprintf(f, "Reporting capabilities of display %s, visual 0x%x\n",
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params.display == NULL ? getenv("DISPLAY") : params.display, params.visual);
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#endif
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fprintf(f, "Running on a %s from %s\n",
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glGetString(GL_RENDERER), glGetString(GL_VENDOR));
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fprintf(f, "OpenGL version %s is supported\n", glGetString(GL_VERSION));
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glewInfo();
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#if defined(GLEW_OSMESA)
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#elif defined(_WIN32)
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wglewInfo();
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#else
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glxewInfo();
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#endif
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if (f != stdout) fclose(f);
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glewDestroyContext();
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return 0;
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}
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/* ------------------------------------------------------------------------ */
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GLboolean glewParseArgs (int argc, char** argv, struct createParams *params)
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{
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int p = 0;
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while (p < argc)
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{
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if (!strcmp(argv[p], "-version"))
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{
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if (++p >= argc) return GL_TRUE;
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if (sscanf(argv[p++], "%d.%d", ¶ms->major, ¶ms->minor) != 2) return GL_TRUE;
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}
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else if (!strcmp(argv[p], "-profile"))
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{
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if (++p >= argc) return GL_TRUE;
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if (strcmp("core", argv[p]) == 0) params->profile |= 1;
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else if (strcmp("compatibility",argv[p]) == 0) params->profile |= 2;
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else return GL_TRUE;
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++p;
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}
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else if (!strcmp(argv[p], "-flag"))
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{
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if (++p >= argc) return GL_TRUE;
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if (strcmp("debug", argv[p]) == 0) params->flags |= 1;
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else if (strcmp("forward",argv[p]) == 0) params->flags |= 2;
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else return GL_TRUE;
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++p;
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}
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#if defined(GLEW_OSMESA)
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#elif defined(_WIN32)
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else if (!strcmp(argv[p], "-pf") || !strcmp(argv[p], "-pixelformat"))
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{
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if (++p >= argc) return GL_TRUE;
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params->pixelformat = strtol(argv[p++], NULL, 0);
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}
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#elif !defined(__HAIKU__) && !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
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else if (!strcmp(argv[p], "-display"))
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{
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if (++p >= argc) return GL_TRUE;
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params->display = argv[p++];
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}
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else if (!strcmp(argv[p], "-visual"))
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{
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if (++p >= argc) return GL_TRUE;
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params->visual = (int)strtol(argv[p++], NULL, 0);
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}
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#endif
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else
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return GL_TRUE;
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}
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return GL_FALSE;
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}
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/* ------------------------------------------------------------------------ */
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#if defined(GLEW_OSMESA)
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OSMesaContext ctx;
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static const GLint osmFormat = GL_UNSIGNED_BYTE;
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static const GLint osmWidth = 640;
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static const GLint osmHeight = 480;
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static GLubyte *osmPixels = NULL;
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GLboolean glewCreateContext (struct createParams *params)
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{
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ctx = OSMesaCreateContext(OSMESA_RGBA, NULL);
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if (NULL == ctx) return GL_TRUE;
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if (NULL == osmPixels)
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{
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osmPixels = (GLubyte *) calloc(osmWidth*osmHeight*4, 1);
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}
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if (!OSMesaMakeCurrent(ctx, osmPixels, GL_UNSIGNED_BYTE, osmWidth, osmHeight))
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{
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return GL_TRUE;
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}
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return GL_FALSE;
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}
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void glewDestroyContext ()
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{
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if (NULL != ctx) OSMesaDestroyContext(ctx);
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}
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#elif defined(_WIN32)
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HWND wnd = NULL;
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HDC dc = NULL;
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HGLRC rc = NULL;
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GLboolean glewCreateContext (struct createParams* params)
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{
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WNDCLASS wc;
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PIXELFORMATDESCRIPTOR pfd;
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/* register window class */
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ZeroMemory(&wc, sizeof(WNDCLASS));
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wc.hInstance = GetModuleHandle(NULL);
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wc.lpfnWndProc = DefWindowProc;
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wc.lpszClassName = "GLEW";
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if (0 == RegisterClass(&wc)) return GL_TRUE;
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/* create window */
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wnd = CreateWindow("GLEW", "GLEW", 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
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CW_USEDEFAULT, NULL, NULL, GetModuleHandle(NULL), NULL);
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if (NULL == wnd) return GL_TRUE;
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/* get the device context */
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dc = GetDC(wnd);
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if (NULL == dc) return GL_TRUE;
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/* find pixel format */
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ZeroMemory(&pfd, sizeof(PIXELFORMATDESCRIPTOR));
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if (params->pixelformat == -1) /* find default */
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{
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pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
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params->pixelformat = ChoosePixelFormat(dc, &pfd);
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if (params->pixelformat == 0) return GL_TRUE;
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}
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/* set the pixel format for the dc */
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if (FALSE == SetPixelFormat(dc, params->pixelformat, &pfd)) return GL_TRUE;
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/* create rendering context */
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rc = wglCreateContext(dc);
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if (NULL == rc) return GL_TRUE;
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if (FALSE == wglMakeCurrent(dc, rc)) return GL_TRUE;
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if (params->major || params->profile || params->flags)
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{
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HGLRC oldRC = rc;
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int contextAttrs[20];
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int i;
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wglewInit();
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/* Intel HD 3000 has WGL_ARB_create_context, but not WGL_ARB_create_context_profile */
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if (!wglewGetExtension("WGL_ARB_create_context"))
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return GL_TRUE;
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i = 0;
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if (params->major)
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{
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contextAttrs[i++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
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contextAttrs[i++] = params->major;
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contextAttrs[i++] = WGL_CONTEXT_MINOR_VERSION_ARB;
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contextAttrs[i++] = params->minor;
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}
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if (params->profile)
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{
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contextAttrs[i++] = WGL_CONTEXT_PROFILE_MASK_ARB;
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contextAttrs[i++] = params->profile;
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}
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if (params->flags)
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{
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contextAttrs[i++] = WGL_CONTEXT_FLAGS_ARB;
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contextAttrs[i++] = params->flags;
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}
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contextAttrs[i++] = 0;
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rc = wglCreateContextAttribsARB(dc, 0, contextAttrs);
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if (NULL == rc) return GL_TRUE;
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if (!wglMakeCurrent(dc, rc)) return GL_TRUE;
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wglDeleteContext(oldRC);
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}
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return GL_FALSE;
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}
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void glewDestroyContext ()
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{
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if (NULL != rc) wglMakeCurrent(NULL, NULL);
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if (NULL != rc) wglDeleteContext(rc);
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if (NULL != wnd && NULL != dc) ReleaseDC(wnd, dc);
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if (NULL != wnd) DestroyWindow(wnd);
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UnregisterClass("GLEW", GetModuleHandle(NULL));
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}
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/* ------------------------------------------------------------------------ */
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#elif defined(__APPLE__) && !defined(GLEW_APPLE_GLX)
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#include <OpenGL/OpenGL.h>
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#include <OpenGL/CGLTypes.h>
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CGLContextObj ctx, octx;
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GLboolean glewCreateContext (struct createParams *params)
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{
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CGLPixelFormatAttribute contextAttrs[20];
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int i;
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CGLPixelFormatObj pf;
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GLint npix;
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CGLError error;
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i = 0;
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contextAttrs[i++] = kCGLPFAAccelerated; /* No software rendering */
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#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_7
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if (params->profile & GL_CONTEXT_CORE_PROFILE_BIT)
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{
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if (params->major==3 && params->minor>=2)
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{
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contextAttrs[i++] = kCGLPFAOpenGLProfile; /* OSX 10.7 Lion onwards */
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contextAttrs[i++] = (CGLPixelFormatAttribute) kCGLOGLPVersion_3_2_Core; /* 3.2 Core Context */
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}
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}
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#endif
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contextAttrs[i++] = 0;
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error = CGLChoosePixelFormat(contextAttrs, &pf, &npix);
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if (error) return GL_TRUE;
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error = CGLCreateContext(pf, NULL, &ctx);
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if (error) return GL_TRUE;
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CGLReleasePixelFormat(pf);
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octx = CGLGetCurrentContext();
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error = CGLSetCurrentContext(ctx);
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if (error) return GL_TRUE;
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/* Needed for Regal on the Mac */
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#if defined(GLEW_REGAL) && defined(__APPLE__)
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RegalMakeCurrent(ctx);
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#endif
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return GL_FALSE;
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}
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void glewDestroyContext ()
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{
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CGLSetCurrentContext(octx);
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CGLReleaseContext(ctx);
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}
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/* ------------------------------------------------------------------------ */
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#elif defined(__HAIKU__)
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GLboolean glewCreateContext (struct createParams *params)
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{
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/* TODO: Haiku: We need to call C++ code here */
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return GL_FALSE;
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}
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void glewDestroyContext ()
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{
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/* TODO: Haiku: We need to call C++ code here */
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}
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/* ------------------------------------------------------------------------ */
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#else /* __UNIX || (__APPLE__ && GLEW_APPLE_GLX) */
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Display* dpy = NULL;
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XVisualInfo* vi = NULL;
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XVisualInfo* vis = NULL;
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GLXContext ctx = NULL;
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Window wnd = 0;
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Colormap cmap = 0;
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GLboolean glewCreateContext (struct createParams *params)
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{
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int attrib[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
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int erb, evb;
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XSetWindowAttributes swa;
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/* open display */
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dpy = XOpenDisplay(params->display);
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if (NULL == dpy) return GL_TRUE;
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/* query for glx */
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if (!glXQueryExtension(dpy, &erb, &evb)) return GL_TRUE;
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/* choose visual */
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if (params->visual == -1)
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{
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vi = glXChooseVisual(dpy, DefaultScreen(dpy), attrib);
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if (NULL == vi) return GL_TRUE;
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params->visual = (int)XVisualIDFromVisual(vi->visual);
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}
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else
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{
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int n_vis, i;
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vis = XGetVisualInfo(dpy, 0, NULL, &n_vis);
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for (i=0; i<n_vis; i++)
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{
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if ((int)XVisualIDFromVisual(vis[i].visual) == params->visual)
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vi = &vis[i];
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}
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if (vi == NULL) return GL_TRUE;
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}
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/* create context */
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ctx = glXCreateContext(dpy, vi, None, True);
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if (NULL == ctx) return GL_TRUE;
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/* create window */
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/*wnd = XCreateSimpleWindow(dpy, RootWindow(dpy, vi->screen), 0, 0, 1, 1, 1, 0, 0);*/
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cmap = XCreateColormap(dpy, RootWindow(dpy, vi->screen), vi->visual, AllocNone);
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swa.border_pixel = 0;
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swa.colormap = cmap;
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wnd = XCreateWindow(dpy, RootWindow(dpy, vi->screen),
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0, 0, 1, 1, 0, vi->depth, InputOutput, vi->visual,
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CWBorderPixel | CWColormap, &swa);
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/* make context current */
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if (!glXMakeCurrent(dpy, wnd, ctx)) return GL_TRUE;
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if (params->major || params->profile || params->flags)
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{
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GLXContext oldCtx = ctx;
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GLXFBConfig *FBConfigs;
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int FBConfigAttrs[] = { GLX_FBCONFIG_ID, 0, None };
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int contextAttrs[20];
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int nelems, i;
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glxewInit();
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if (!glxewGetExtension("GLX_ARB_create_context"))
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return GL_TRUE;
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if (glXQueryContext(dpy, oldCtx, GLX_FBCONFIG_ID, &FBConfigAttrs[1]))
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return GL_TRUE;
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FBConfigs = glXChooseFBConfig(dpy, vi->screen, FBConfigAttrs, &nelems);
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if (nelems < 1)
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return GL_TRUE;
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i = 0;
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if (params->major)
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{
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contextAttrs[i++] = GLX_CONTEXT_MAJOR_VERSION_ARB;
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contextAttrs[i++] = params->major;
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contextAttrs[i++] = GLX_CONTEXT_MINOR_VERSION_ARB;
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contextAttrs[i++] = params->minor;
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}
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if (params->profile)
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{
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contextAttrs[i++] = GLX_CONTEXT_PROFILE_MASK_ARB;
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contextAttrs[i++] = params->profile;
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}
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if (params->flags)
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{
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contextAttrs[i++] = GLX_CONTEXT_FLAGS_ARB;
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contextAttrs[i++] = params->flags;
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}
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contextAttrs[i++] = None;
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ctx = glXCreateContextAttribsARB(dpy, *FBConfigs, NULL, True, contextAttrs);
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if (NULL == ctx) return GL_TRUE;
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if (!glXMakeCurrent(dpy, wnd, ctx)) return GL_TRUE;
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glXDestroyContext(dpy, oldCtx);
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XFree(FBConfigs);
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}
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return GL_FALSE;
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}
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void glewDestroyContext ()
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{
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if (NULL != dpy && NULL != ctx) glXDestroyContext(dpy, ctx);
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if (NULL != dpy && 0 != wnd) XDestroyWindow(dpy, wnd);
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if (NULL != dpy && 0 != cmap) XFreeColormap(dpy, cmap);
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if (NULL != vis)
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XFree(vis);
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else if (NULL != vi)
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XFree(vi);
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if (NULL != dpy) XCloseDisplay(dpy);
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}
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#endif /* __UNIX || (__APPLE__ && GLEW_APPLE_GLX) */
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