tests/glfwinfo.c - third_party/glfw - Git at Google

 //========================================================================
 // Version information dumper
 // Copyright (c) Camilla Berglund <elmindreda@elmindreda.org>
 //
 // This software is provided 'as-is', without any express or implied
 // warranty. In no event will the authors be held liable for any damages
 // arising from the use of this software.
 //
 // Permission is granted to anyone to use this software for any purpose,
 // including commercial applications, and to alter it and redistribute it
 // freely, subject to the following restrictions:
 //
 // 1. The origin of this software must not be misrepresented; you must not
 //    claim that you wrote the original software. If you use this software
 //    in a product, an acknowledgment in the product documentation would
 //    be appreciated but is not required.
 //
 // 2. Altered source versions must be plainly marked as such, and must not
 //    be misrepresented as being the original software.
 //
 // 3. This notice may not be removed or altered from any source
 //    distribution.
 //
 //========================================================================
 //
 // This test is a pale imitation of glxinfo(1), except not really
 //
 // It dumps GLFW and OpenGL version information
 //
 //========================================================================

 #include <GL/glfw3.h>
 #include <GL/glext.h>

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

 #include "getopt.h"

 #ifdef _MSC_VER
 #define strcasecmp(x, y) _stricmp(x, y)
 #endif

 #define API_OPENGL          "gl"
 #define API_OPENGL_ES       "es"

 #define PROFILE_NAME_CORE   "core"
 #define PROFILE_NAME_COMPAT "compat"

 #define STRATEGY_NAME_NONE "none"
 #define STRATEGY_NAME_LOSE "lose"

 static void usage(void)
 {
     printf("Usage: glfwinfo [-h] [-a API] [-m MAJOR] [-n MINOR] [-d] [-l] [-f] [-p PROFILE] [-r STRATEGY]\n");
     printf("available APIs: " API_OPENGL " " API_OPENGL_ES "\n");
     printf("available profiles: " PROFILE_NAME_CORE " " PROFILE_NAME_COMPAT "\n");
     printf("available strategies: " STRATEGY_NAME_NONE " " STRATEGY_NAME_LOSE "\n");
 }

 static void error_callback(int error, const char* description)
 {
     fprintf(stderr, "Error: %s\n", description);
 }

 static const char* get_client_api_name(int api)
 {
     if (api == GLFW_OPENGL_API)
         return "OpenGL";
     else if (api == GLFW_OPENGL_ES_API)
         return "OpenGL ES";

     return "Unknown API";
 }

 static const char* get_profile_name_gl(GLint mask)
 {
     if (mask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT)
         return PROFILE_NAME_COMPAT;
     if (mask & GL_CONTEXT_CORE_PROFILE_BIT)
         return PROFILE_NAME_CORE;

     return "unknown";
 }

 static const char* get_profile_name_glfw(int profile)
 {
     if (profile == GLFW_OPENGL_COMPAT_PROFILE)
         return PROFILE_NAME_COMPAT;
     if (profile == GLFW_OPENGL_CORE_PROFILE)
         return PROFILE_NAME_CORE;

     return "unknown";
 }

 static const char* get_strategy_name_gl(GLint strategy)
 {
     if (strategy == GL_LOSE_CONTEXT_ON_RESET_ARB)
         return STRATEGY_NAME_LOSE;
     if (strategy == GL_NO_RESET_NOTIFICATION_ARB)
         return STRATEGY_NAME_NONE;

     return "unknown";
 }

 static const char* get_strategy_name_glfw(int strategy)
 {
     if (strategy == GLFW_LOSE_CONTEXT_ON_RESET)
         return STRATEGY_NAME_LOSE;
     if (strategy == GLFW_NO_RESET_NOTIFICATION)
         return STRATEGY_NAME_NONE;

     return "unknown";
 }

 static void list_extensions(int api, int major, int minor)
 {
     int i;
     GLint count;
     const GLubyte* extensions;

     printf("%s context supported extensions:\n", get_client_api_name(api));

     if (api == GLFW_OPENGL_API && major > 2)
     {
         PFNGLGETSTRINGIPROC glGetStringi = (PFNGLGETSTRINGIPROC) glfwGetProcAddress("glGetStringi");
         if (!glGetStringi)
         {
             glfwTerminate();
             exit(EXIT_FAILURE);
         }

         glGetIntegerv(GL_NUM_EXTENSIONS, &count);

         for (i = 0;  i < count;  i++)
             puts((const char*) glGetStringi(GL_EXTENSIONS, i));
     }
     else
     {
         extensions = glGetString(GL_EXTENSIONS);
         while (*extensions != '\0')
         {
             if (*extensions == ' ')
                 putchar('\n');
             else
                 putchar(*extensions);

             extensions++;
         }
     }

     putchar('\n');
 }

 static GLboolean valid_version(void)
 {
     int major, minor, revision;

     glfwGetVersion(&major, &minor, &revision);

     printf("GLFW header version: %u.%u.%u\n",
            GLFW_VERSION_MAJOR,
            GLFW_VERSION_MINOR,
            GLFW_VERSION_REVISION);

     printf("GLFW library version: %u.%u.%u\n", major, minor, revision);

     if (major != GLFW_VERSION_MAJOR)
     {
         printf("*** ERROR: GLFW major version mismatch! ***\n");
         return GL_FALSE;
     }

     if (minor != GLFW_VERSION_MINOR || revision != GLFW_VERSION_REVISION)
         printf("*** WARNING: GLFW version mismatch! ***\n");

     printf("GLFW library version string: \"%s\"\n", glfwGetVersionString());
     return GL_TRUE;
 }

 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);

     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 = glfwGetWindowParam(window, GLFW_CLIENT_API);
     major = glfwGetWindowParam(window, GLFW_CONTEXT_VERSION_MAJOR);
     minor = glfwGetWindowParam(window, GLFW_CONTEXT_VERSION_MINOR);
     revision = glfwGetWindowParam(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 (glfwGetWindowParam(window, GLFW_OPENGL_FORWARD_COMPAT))
                 printf(" forward-compatible");
             if (glfwGetWindowParam(window, GLFW_OPENGL_DEBUG_CONTEXT))
                 printf(" debug");
             if (glfwGetWindowParam(window, GLFW_CONTEXT_ROBUSTNESS) != GLFW_NO_ROBUSTNESS)
                 printf(" robustness");
             putchar('\n');
         }

         if (major > 3 || (major == 3 && minor >= 2))
         {
             int profile = glfwGetWindowParam(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 = glfwGetWindowParam(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);
 }
	//========================================================================
	// Version information dumper
	// Copyright (c) Camilla Berglund <elmindreda@elmindreda.org>
	//
	// This software is provided 'as-is', without any express or implied
	// warranty. In no event will the authors be held liable for any damages
	// arising from the use of this software.
	//
	// Permission is granted to anyone to use this software for any purpose,
	// including commercial applications, and to alter it and redistribute it
	// freely, subject to the following restrictions:
	//
	// 1. The origin of this software must not be misrepresented; you must not
	// claim that you wrote the original software. If you use this software
	// in a product, an acknowledgment in the product documentation would
	// be appreciated but is not required.
	//
	// 2. Altered source versions must be plainly marked as such, and must not
	// be misrepresented as being the original software.
	//
	// 3. This notice may not be removed or altered from any source
	// distribution.
	//
	//========================================================================
	//
	// This test is a pale imitation of glxinfo(1), except not really
	//
	// It dumps GLFW and OpenGL version information
	//
	//========================================================================

	#include <GL/glfw3.h>
	#include <GL/glext.h>

	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#include "getopt.h"

	#ifdef _MSC_VER
	#define strcasecmp(x, y) _stricmp(x, y)
	#endif

	#define API_OPENGL "gl"
	#define API_OPENGL_ES "es"

	#define PROFILE_NAME_CORE "core"
	#define PROFILE_NAME_COMPAT "compat"

	#define STRATEGY_NAME_NONE "none"
	#define STRATEGY_NAME_LOSE "lose"

	static void usage(void)
	{
	printf("Usage: glfwinfo [-h] [-a API] [-m MAJOR] [-n MINOR] [-d] [-l] [-f] [-p PROFILE] [-r STRATEGY]\n");
	printf("available APIs: " API_OPENGL " " API_OPENGL_ES "\n");
	printf("available profiles: " PROFILE_NAME_CORE " " PROFILE_NAME_COMPAT "\n");
	printf("available strategies: " STRATEGY_NAME_NONE " " STRATEGY_NAME_LOSE "\n");
	}

	static void error_callback(int error, const char* description)
	{
	fprintf(stderr, "Error: %s\n", description);
	}

	static const char* get_client_api_name(int api)
	{
	if (api == GLFW_OPENGL_API)
	return "OpenGL";
	else if (api == GLFW_OPENGL_ES_API)
	return "OpenGL ES";

	return "Unknown API";
	}

	static const char* get_profile_name_gl(GLint mask)
	{
	if (mask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT)
	return PROFILE_NAME_COMPAT;
	if (mask & GL_CONTEXT_CORE_PROFILE_BIT)
	return PROFILE_NAME_CORE;

	return "unknown";
	}

	static const char* get_profile_name_glfw(int profile)
	{
	if (profile == GLFW_OPENGL_COMPAT_PROFILE)
	return PROFILE_NAME_COMPAT;
	if (profile == GLFW_OPENGL_CORE_PROFILE)
	return PROFILE_NAME_CORE;

	return "unknown";
	}

	static const char* get_strategy_name_gl(GLint strategy)
	{
	if (strategy == GL_LOSE_CONTEXT_ON_RESET_ARB)
	return STRATEGY_NAME_LOSE;
	if (strategy == GL_NO_RESET_NOTIFICATION_ARB)
	return STRATEGY_NAME_NONE;

	return "unknown";
	}

	static const char* get_strategy_name_glfw(int strategy)
	{
	if (strategy == GLFW_LOSE_CONTEXT_ON_RESET)
	return STRATEGY_NAME_LOSE;
	if (strategy == GLFW_NO_RESET_NOTIFICATION)
	return STRATEGY_NAME_NONE;

	return "unknown";
	}

	static void list_extensions(int api, int major, int minor)
	{
	int i;
	GLint count;
	const GLubyte* extensions;

	printf("%s context supported extensions:\n", get_client_api_name(api));

	if (api == GLFW_OPENGL_API && major > 2)
	{
	PFNGLGETSTRINGIPROC glGetStringi = (PFNGLGETSTRINGIPROC) glfwGetProcAddress("glGetStringi");
	if (!glGetStringi)
	{
	glfwTerminate();
	exit(EXIT_FAILURE);
	}

	glGetIntegerv(GL_NUM_EXTENSIONS, &count);

	for (i = 0; i < count; i++)
	puts((const char*) glGetStringi(GL_EXTENSIONS, i));
	}
	else
	{
	extensions = glGetString(GL_EXTENSIONS);
	while (*extensions != '\0')
	{
	if (*extensions == ' ')
	putchar('\n');
	else
	putchar(*extensions);

	extensions++;
	}
	}

	putchar('\n');
	}

	static GLboolean valid_version(void)
	{
	int major, minor, revision;

	glfwGetVersion(&major, &minor, &revision);

	printf("GLFW header version: %u.%u.%u\n",
	GLFW_VERSION_MAJOR,
	GLFW_VERSION_MINOR,
	GLFW_VERSION_REVISION);

	printf("GLFW library version: %u.%u.%u\n", major, minor, revision);

	if (major != GLFW_VERSION_MAJOR)
	{
	printf("* ERROR: GLFW major version mismatch! *\n");
	return GL_FALSE;
	}

	if (minor != GLFW_VERSION_MINOR \|\| revision != GLFW_VERSION_REVISION)
	printf("* WARNING: GLFW version mismatch! *\n");

	printf("GLFW library version string: \"%s\"\n", glfwGetVersionString());
	return GL_TRUE;
	}

	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);

	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 = glfwGetWindowParam(window, GLFW_CLIENT_API);
	major = glfwGetWindowParam(window, GLFW_CONTEXT_VERSION_MAJOR);
	minor = glfwGetWindowParam(window, GLFW_CONTEXT_VERSION_MINOR);
	revision = glfwGetWindowParam(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 (glfwGetWindowParam(window, GLFW_OPENGL_FORWARD_COMPAT))
	printf(" forward-compatible");
	if (glfwGetWindowParam(window, GLFW_OPENGL_DEBUG_CONTEXT))
	printf(" debug");
	if (glfwGetWindowParam(window, GLFW_CONTEXT_ROBUSTNESS) != GLFW_NO_ROBUSTNESS)
	printf(" robustness");
	putchar('\n');
	}

	if (major > 3 \|\| (major == 3 && minor >= 2))
	{
	int profile = glfwGetWindowParam(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 = glfwGetWindowParam(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);
	}