示例#1
0
int main(int argc, char** argv)
{
    int ch, client, major, minor, revision, profile;
    GLint redbits, greenbits, bluebits, alphabits, depthbits, stencilbits;
    int list_extensions = GLFW_FALSE, list_layers = GLFW_FALSE;
    GLenum error;
    GLFWwindow* window;

    enum { CLIENT, CONTEXT, BEHAVIOR, DEBUG, FORWARD, HELP, EXTENSIONS, LAYERS,
           MAJOR, MINOR, PROFILE, ROBUSTNESS, VERSION,
           REDBITS, GREENBITS, BLUEBITS, ALPHABITS, DEPTHBITS, STENCILBITS,
           ACCUMREDBITS, ACCUMGREENBITS, ACCUMBLUEBITS, ACCUMALPHABITS,
           AUXBUFFERS, SAMPLES, STEREO, SRGB, SINGLEBUFFER, NOERROR_SRSLY };
    const struct option options[] =
    {
        { "behavior",         1, NULL, BEHAVIOR },
        { "client-api",       1, NULL, CLIENT },
        { "context-api",      1, NULL, CONTEXT },
        { "debug",            0, NULL, DEBUG },
        { "forward",          0, NULL, FORWARD },
        { "help",             0, NULL, HELP },
        { "list-extensions",  0, NULL, EXTENSIONS },
        { "list-layers",      0, NULL, LAYERS },
        { "major",            1, NULL, MAJOR },
        { "minor",            1, NULL, MINOR },
        { "profile",          1, NULL, PROFILE },
        { "robustness",       1, NULL, ROBUSTNESS },
        { "version",          0, NULL, VERSION },
        { "red-bits",         1, NULL, REDBITS },
        { "green-bits",       1, NULL, GREENBITS },
        { "blue-bits",        1, NULL, BLUEBITS },
        { "alpha-bits",       1, NULL, ALPHABITS },
        { "depth-bits",       1, NULL, DEPTHBITS },
        { "stencil-bits",     1, NULL, STENCILBITS },
        { "accum-red-bits",   1, NULL, ACCUMREDBITS },
        { "accum-green-bits", 1, NULL, ACCUMGREENBITS },
        { "accum-blue-bits",  1, NULL, ACCUMBLUEBITS },
        { "accum-alpha-bits", 1, NULL, ACCUMALPHABITS },
        { "aux-buffers",      1, NULL, AUXBUFFERS },
        { "samples",          1, NULL, SAMPLES },
        { "stereo",           0, NULL, STEREO },
        { "srgb",             0, NULL, SRGB },
        { "singlebuffer",     0, NULL, SINGLEBUFFER },
        { "no-error",         0, NULL, NOERROR_SRSLY },
        { NULL, 0, NULL, 0 }
    };

    // Initialize GLFW and create window

    if (!valid_version())
        exit(EXIT_FAILURE);

    glfwSetErrorCallback(error_callback);

    if (!glfwInit())
        exit(EXIT_FAILURE);

    while ((ch = getopt_long(argc, argv, "a:b:c:dfhlm:n:p:s:v", options, NULL)) != -1)
    {
        switch (ch)
        {
            case 'a':
            case CLIENT:
                if (strcasecmp(optarg, API_NAME_OPENGL) == 0)
                    glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_API);
                else if (strcasecmp(optarg, API_NAME_OPENGL_ES) == 0)
                    glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
                break;
            case 'b':
            case BEHAVIOR:
                if (strcasecmp(optarg, BEHAVIOR_NAME_NONE) == 0)
                {
                    glfwWindowHint(GLFW_CONTEXT_RELEASE_BEHAVIOR,
                                   GLFW_RELEASE_BEHAVIOR_NONE);
                }
                else if (strcasecmp(optarg, BEHAVIOR_NAME_FLUSH) == 0)
                {
                    glfwWindowHint(GLFW_CONTEXT_RELEASE_BEHAVIOR,
                                   GLFW_RELEASE_BEHAVIOR_FLUSH);
                }
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
                break;
            case 'c':
            case CONTEXT:
                if (strcasecmp(optarg, API_NAME_NATIVE) == 0)
                    glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API);
                else if (strcasecmp(optarg, API_NAME_EGL) == 0)
                    glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_EGL_CONTEXT_API);
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
                break;
            case 'd':
            case DEBUG:
                glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GLFW_TRUE);
                break;
            case 'f':
            case FORWARD:
                glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE);
                break;
            case 'h':
            case HELP:
                usage();
                exit(EXIT_SUCCESS);
            case 'l':
            case EXTENSIONS:
                list_extensions = GLFW_TRUE;
                break;
            case LAYERS:
                list_layers = GLFW_TRUE;
                break;
            case 'm':
            case MAJOR:
                glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, atoi(optarg));
                break;
            case 'n':
            case MINOR:
                glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, atoi(optarg));
                break;
            case 'p':
            case PROFILE:
                if (strcasecmp(optarg, PROFILE_NAME_CORE) == 0)
                {
                    glfwWindowHint(GLFW_OPENGL_PROFILE,
                                   GLFW_OPENGL_CORE_PROFILE);
                }
                else if (strcasecmp(optarg, PROFILE_NAME_COMPAT) == 0)
                {
                    glfwWindowHint(GLFW_OPENGL_PROFILE,
                                   GLFW_OPENGL_COMPAT_PROFILE);
                }
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
                break;
            case 's':
            case ROBUSTNESS:
                if (strcasecmp(optarg, STRATEGY_NAME_NONE) == 0)
                {
                    glfwWindowHint(GLFW_CONTEXT_ROBUSTNESS,
                                   GLFW_NO_RESET_NOTIFICATION);
                }
                else if (strcasecmp(optarg, STRATEGY_NAME_LOSE) == 0)
                {
                    glfwWindowHint(GLFW_CONTEXT_ROBUSTNESS,
                                   GLFW_LOSE_CONTEXT_ON_RESET);
                }
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
                break;
            case 'v':
            case VERSION:
                print_version();
                exit(EXIT_SUCCESS);
            case REDBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_RED_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_RED_BITS, atoi(optarg));
                break;
            case GREENBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_GREEN_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_GREEN_BITS, atoi(optarg));
                break;
            case BLUEBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_BLUE_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_BLUE_BITS, atoi(optarg));
                break;
            case ALPHABITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_ALPHA_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_ALPHA_BITS, atoi(optarg));
                break;
            case DEPTHBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_DEPTH_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_DEPTH_BITS, atoi(optarg));
                break;
            case STENCILBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_STENCIL_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_STENCIL_BITS, atoi(optarg));
                break;
            case ACCUMREDBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_ACCUM_RED_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_ACCUM_RED_BITS, atoi(optarg));
                break;
            case ACCUMGREENBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_ACCUM_GREEN_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_ACCUM_GREEN_BITS, atoi(optarg));
                break;
            case ACCUMBLUEBITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_ACCUM_BLUE_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_ACCUM_BLUE_BITS, atoi(optarg));
                break;
            case ACCUMALPHABITS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_ACCUM_ALPHA_BITS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_ACCUM_ALPHA_BITS, atoi(optarg));
                break;
            case AUXBUFFERS:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_AUX_BUFFERS, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_AUX_BUFFERS, atoi(optarg));
                break;
            case SAMPLES:
                if (strcmp(optarg, "-") == 0)
                    glfwWindowHint(GLFW_SAMPLES, GLFW_DONT_CARE);
                else
                    glfwWindowHint(GLFW_SAMPLES, atoi(optarg));
                break;
            case STEREO:
                glfwWindowHint(GLFW_STEREO, GLFW_TRUE);
                break;
            case SRGB:
                glfwWindowHint(GLFW_SRGB_CAPABLE, GLFW_TRUE);
                break;
            case SINGLEBUFFER:
                glfwWindowHint(GLFW_DOUBLEBUFFER, GLFW_FALSE);
                break;
            case NOERROR_SRSLY:
                glfwWindowHint(GLFW_CONTEXT_NO_ERROR, GLFW_TRUE);
                break;
            default:
                usage();
                exit(EXIT_FAILURE);
        }
    }

    print_version();

    glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);

    window = glfwCreateWindow(200, 200, "Version", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

    glfwMakeContextCurrent(window);
    gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);

    error = glGetError();
    if (error != GL_NO_ERROR)
        printf("*** OpenGL error after make current: 0x%08x ***\n", error);

    // Report client API version

    client = glfwGetWindowAttrib(window, GLFW_CLIENT_API);
    major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
    minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
    revision = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);
    profile = glfwGetWindowAttrib(window, GLFW_OPENGL_PROFILE);

    printf("%s context version string: \"%s\"\n",
           get_api_name(client),
           glGetString(GL_VERSION));

    printf("%s context version parsed by GLFW: %u.%u.%u\n",
           get_api_name(client),
           major, minor, revision);

    // Report client API context properties

    if (client == GLFW_OPENGL_API)
    {
        if (major >= 3)
        {
            GLint flags;

            glGetIntegerv(GL_CONTEXT_FLAGS, &flags);
            printf("%s context flags (0x%08x):", get_api_name(client), flags);

            if (flags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
                printf(" forward-compatible");
            if (flags & 2/*GL_CONTEXT_FLAG_DEBUG_BIT*/)
                printf(" debug");
            if (flags & GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB)
                printf(" robustness");
            if (flags & 8/*GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR*/)
                printf(" no-error");
            putchar('\n');

            printf("%s context flags parsed by GLFW:", get_api_name(client));

            if (glfwGetWindowAttrib(window, GLFW_OPENGL_FORWARD_COMPAT))
                printf(" forward-compatible");
            if (glfwGetWindowAttrib(window, GLFW_OPENGL_DEBUG_CONTEXT))
                printf(" debug");
            if (glfwGetWindowAttrib(window, GLFW_CONTEXT_ROBUSTNESS) == GLFW_LOSE_CONTEXT_ON_RESET)
                printf(" robustness");
            if (glfwGetWindowAttrib(window, GLFW_CONTEXT_NO_ERROR))
                printf(" no-error");
            putchar('\n');
        }

        if (major >= 4 || (major == 3 && minor >= 2))
        {
            GLint mask;
            glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &mask);

            printf("%s profile mask (0x%08x): %s\n",
                   get_api_name(client),
                   mask,
                   get_profile_name_gl(mask));

            printf("%s profile mask parsed by GLFW: %s\n",
                   get_api_name(client),
                   get_profile_name_glfw(profile));
        }

        if (GLAD_GL_ARB_robustness)
        {
            const int robustness = glfwGetWindowAttrib(window, GLFW_CONTEXT_ROBUSTNESS);
            GLint strategy;
            glGetIntegerv(GL_RESET_NOTIFICATION_STRATEGY_ARB, &strategy);

            printf("%s robustness strategy (0x%08x): %s\n",
                   get_api_name(client),
                   strategy,
                   get_strategy_name_gl(strategy));

            printf("%s robustness strategy parsed by GLFW: %s\n",
                   get_api_name(client),
                   get_strategy_name_glfw(robustness));
        }
    }

    printf("%s context renderer string: \"%s\"\n",
           get_api_name(client),
           glGetString(GL_RENDERER));
    printf("%s context vendor string: \"%s\"\n",
           get_api_name(client),
           glGetString(GL_VENDOR));

    if (major >= 2)
    {
        printf("%s context shading language version: \"%s\"\n",
               get_api_name(client),
               glGetString(GL_SHADING_LANGUAGE_VERSION));
    }

    printf("%s framebuffer:\n", get_api_name(client));

    if (client == GLFW_OPENGL_API && profile == GLFW_OPENGL_CORE_PROFILE)
    {
        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
                                              GL_BACK_LEFT,
                                              GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE,
                                              &redbits);
        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
                                              GL_BACK_LEFT,
                                              GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE,
                                              &greenbits);
        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
                                              GL_BACK_LEFT,
                                              GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE,
                                              &bluebits);
        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
                                              GL_BACK_LEFT,
                                              GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE,
                                              &alphabits);
        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
                                              GL_DEPTH,
                                              GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE,
                                              &depthbits);
        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
                                              GL_STENCIL,
                                              GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE,
                                              &stencilbits);
    }
    else
    {
        glGetIntegerv(GL_RED_BITS, &redbits);
        glGetIntegerv(GL_GREEN_BITS, &greenbits);
        glGetIntegerv(GL_BLUE_BITS, &bluebits);
        glGetIntegerv(GL_ALPHA_BITS, &alphabits);
        glGetIntegerv(GL_DEPTH_BITS, &depthbits);
        glGetIntegerv(GL_STENCIL_BITS, &stencilbits);
    }

    printf(" red: %u green: %u blue: %u alpha: %u depth: %u stencil: %u\n",
           redbits, greenbits, bluebits, alphabits, depthbits, stencilbits);

    if (client == GLFW_OPENGL_ES_API ||
        GLAD_GL_ARB_multisample ||
        major > 1 || minor >= 3)
    {
        GLint samples, samplebuffers;
        glGetIntegerv(GL_SAMPLES, &samples);
        glGetIntegerv(GL_SAMPLE_BUFFERS, &samplebuffers);

        printf(" samples: %u sample buffers: %u\n", samples, samplebuffers);
    }

    if (client == GLFW_OPENGL_API && profile != GLFW_OPENGL_CORE_PROFILE)
    {
        GLint accumredbits, accumgreenbits, accumbluebits, accumalphabits;
        GLint auxbuffers;

        glGetIntegerv(GL_ACCUM_RED_BITS, &accumredbits);
        glGetIntegerv(GL_ACCUM_GREEN_BITS, &accumgreenbits);
        glGetIntegerv(GL_ACCUM_BLUE_BITS, &accumbluebits);
        glGetIntegerv(GL_ACCUM_ALPHA_BITS, &accumalphabits);
        glGetIntegerv(GL_AUX_BUFFERS, &auxbuffers);

        printf(" accum red: %u accum green: %u accum blue: %u accum alpha: %u aux buffers: %u\n",
               accumredbits, accumgreenbits, accumbluebits, accumalphabits, auxbuffers);
    }

    if (list_extensions)
        list_context_extensions(client, major, minor);

    printf("Vulkan loader: %s\n",
           glfwVulkanSupported() ? "available" : "missing");

    if (glfwVulkanSupported())
    {
        uint32_t i, re_count, pd_count;
        const char** re;
        VkApplicationInfo ai = {0};
        VkInstanceCreateInfo ici = {0};
        VkInstance instance;
        VkPhysicalDevice* pd;
        PFN_vkCreateInstance vkCreateInstance = (PFN_vkCreateInstance)
            glfwGetInstanceProcAddress(NULL, "vkCreateInstance");
        PFN_vkDestroyInstance vkDestroyInstance;
        PFN_vkEnumeratePhysicalDevices vkEnumeratePhysicalDevices;
        PFN_vkGetPhysicalDeviceProperties vkGetPhysicalDeviceProperties;

        re = glfwGetRequiredInstanceExtensions(&re_count);

        printf("Vulkan required instance extensions:");
        for (i = 0;  i < re_count;  i++)
            printf(" %s", re[i]);
        putchar('\n');

        if (list_extensions)
            list_vulkan_instance_extensions();

        if (list_layers)
            list_vulkan_instance_layers();

        ai.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
        ai.pApplicationName = "glfwinfo";
        ai.applicationVersion = GLFW_VERSION_MAJOR;
        ai.pEngineName = "GLFW";
        ai.engineVersion = GLFW_VERSION_MAJOR;
        ai.apiVersion = VK_API_VERSION_1_0;

        ici.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
        ici.pApplicationInfo = &ai;
        ici.enabledExtensionCount = re_count;
        ici.ppEnabledExtensionNames = re;

        if (vkCreateInstance(&ici, NULL, &instance) != VK_SUCCESS)
        {
            glfwTerminate();
            exit(EXIT_FAILURE);
        }

        vkDestroyInstance = (PFN_vkDestroyInstance)
            glfwGetInstanceProcAddress(instance, "vkDestroyInstance");
        vkEnumeratePhysicalDevices = (PFN_vkEnumeratePhysicalDevices)
            glfwGetInstanceProcAddress(instance, "vkEnumeratePhysicalDevices");
        vkGetPhysicalDeviceProperties = (PFN_vkGetPhysicalDeviceProperties)
            glfwGetInstanceProcAddress(instance, "vkGetPhysicalDeviceProperties");

        if (vkEnumeratePhysicalDevices(instance, &pd_count, NULL) != VK_SUCCESS)
        {
            vkDestroyInstance(instance, NULL);
            glfwTerminate();
            exit(EXIT_FAILURE);
        }

        pd = calloc(pd_count, sizeof(VkPhysicalDevice));

        if (vkEnumeratePhysicalDevices(instance, &pd_count, pd) != VK_SUCCESS)
        {
            free(pd);
            vkDestroyInstance(instance, NULL);
            glfwTerminate();
            exit(EXIT_FAILURE);
        }

        for (i = 0;  i < pd_count;  i++)
        {
            VkPhysicalDeviceProperties pdp;

            vkGetPhysicalDeviceProperties(pd[i], &pdp);

            printf("Vulkan %s device: \"%s\"\n",
                   get_device_type_name(pdp.deviceType),
                   pdp.deviceName);

            if (list_extensions)
                list_vulkan_device_extensions(instance, pd[i]);

            if (list_layers)
                list_vulkan_device_layers(instance, pd[i]);
        }

        free(pd);
        vkDestroyInstance(instance, NULL);
    }

    glfwTerminate();
    exit(EXIT_SUCCESS);
}
示例#2
0
文件: glfwinfo.c 项目: deltaluca/glfw
int main(int argc, char** argv)
{
    int ch, api = 0, profile = 0, strategy = 0, major = 1, minor = 0, revision;
    GLboolean debug = GL_FALSE, forward = GL_FALSE, list = GL_FALSE;
    GLint flags, mask;
    GLFWwindow* window;

    if (!valid_version())
        exit(EXIT_FAILURE);

    while ((ch = getopt(argc, argv, "a:dfhlm:n:p:r:")) != -1)
    {
        switch (ch)
        {
            case 'a':
                if (strcasecmp(optarg, API_OPENGL) == 0)
                    api = GLFW_OPENGL_API;
                else if (strcasecmp(optarg, API_OPENGL_ES) == 0)
                    api = GLFW_OPENGL_ES_API;
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
            case 'd':
                debug = GL_TRUE;
                break;
            case 'f':
                forward = GL_TRUE;
                break;
            case 'h':
                usage();
                exit(EXIT_SUCCESS);
            case 'l':
                list = GL_TRUE;
                break;
            case 'm':
                major = atoi(optarg);
                break;
            case 'n':
                minor = atoi(optarg);
                break;
            case 'p':
                if (strcasecmp(optarg, PROFILE_NAME_CORE) == 0)
                    profile = GLFW_OPENGL_CORE_PROFILE;
                else if (strcasecmp(optarg, PROFILE_NAME_COMPAT) == 0)
                    profile = GLFW_OPENGL_COMPAT_PROFILE;
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
                break;
            case 'r':
                if (strcasecmp(optarg, STRATEGY_NAME_NONE) == 0)
                    strategy = GLFW_NO_RESET_NOTIFICATION;
                else if (strcasecmp(optarg, STRATEGY_NAME_LOSE) == 0)
                    strategy = GLFW_LOSE_CONTEXT_ON_RESET;
                else
                {
                    usage();
                    exit(EXIT_FAILURE);
                }
                break;
            default:
                usage();
                exit(EXIT_FAILURE);
        }
    }

    argc -= optind;
    argv += optind;

    // Initialize GLFW and create window

    glfwSetErrorCallback(error_callback, NULL);

    if (!glfwInit())
        exit(EXIT_FAILURE);

    if (major != 1 || minor != 0)
    {
        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, major);
        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, minor);
    }

    if (api != 0)
        glfwWindowHint(GLFW_CLIENT_API, api);

    if (debug)
        glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GL_TRUE);

    if (forward)
        glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);

    if (profile != 0)
        glfwWindowHint(GLFW_OPENGL_PROFILE, profile);

    if (strategy)
        glfwWindowHint(GLFW_CONTEXT_ROBUSTNESS, strategy);

    glfwWindowHint(GLFW_VISIBLE, GL_FALSE);

    window = glfwCreateWindow(200, 200, "Version", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

    glfwMakeContextCurrent(window);

    // Report client API version

    api = glfwGetWindowAttrib(window, GLFW_CLIENT_API);
    major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
    minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
    revision = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);

    printf("%s context version string: \"%s\"\n",
           get_client_api_name(api),
           glGetString(GL_VERSION));

    printf("%s context version parsed by GLFW: %u.%u.%u\n",
           get_client_api_name(api),
           major, minor, revision);

    // Report client API context properties

    if (api == GLFW_OPENGL_API)
    {
        if (major >= 3)
        {
            glGetIntegerv(GL_CONTEXT_FLAGS, &flags);
            printf("%s context flags (0x%08x):", get_client_api_name(api), flags);

            if (flags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
                printf(" forward-compatible");
            if (flags & GL_CONTEXT_FLAG_DEBUG_BIT)
                printf(" debug");
            if (flags & GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB)
                printf(" robustness");
            putchar('\n');

            printf("%s context flags parsed by GLFW:", get_client_api_name(api));

            if (glfwGetWindowAttrib(window, GLFW_OPENGL_FORWARD_COMPAT))
                printf(" forward-compatible");
            if (glfwGetWindowAttrib(window, GLFW_OPENGL_DEBUG_CONTEXT))
                printf(" debug");
            if (glfwGetWindowAttrib(window, GLFW_CONTEXT_ROBUSTNESS) != GLFW_NO_ROBUSTNESS)
                printf(" robustness");
            putchar('\n');
        }

        if (major > 3 || (major == 3 && minor >= 2))
        {
            int profile = glfwGetWindowAttrib(window, GLFW_OPENGL_PROFILE);

            glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &mask);
            printf("%s profile mask (0x%08x): %s\n",
                   get_client_api_name(api),
                   mask,
                   get_profile_name_gl(mask));

            printf("%s profile mask parsed by GLFW: %s\n",
                   get_client_api_name(api),
                   get_profile_name_glfw(profile));
        }

        if (glfwExtensionSupported("GL_ARB_robustness"))
        {
            int robustness;
            GLint strategy;
            glGetIntegerv(GL_RESET_NOTIFICATION_STRATEGY_ARB, &strategy);

            printf("%s robustness strategy (0x%08x): %s\n",
                   get_client_api_name(api),
                   strategy,
                   get_strategy_name_gl(strategy));

            robustness = glfwGetWindowAttrib(window, GLFW_CONTEXT_ROBUSTNESS);

            printf("%s robustness strategy parsed by GLFW: %s\n",
                   get_client_api_name(api),
                   get_strategy_name_glfw(robustness));
        }
    }

    printf("%s context renderer string: \"%s\"\n",
           get_client_api_name(api),
           glGetString(GL_RENDERER));
    printf("%s context vendor string: \"%s\"\n",
           get_client_api_name(api),
           glGetString(GL_VENDOR));

    if (major > 1)
    {
        printf("%s context shading language version: \"%s\"\n",
               get_client_api_name(api),
               glGetString(GL_SHADING_LANGUAGE_VERSION));
    }

    // Report client API extensions
    if (list)
        list_extensions(api, major, minor);

    glfwTerminate();
    exit(EXIT_SUCCESS);
}