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glfw/tests/glfwinfo.c
Camilla Berglund d68acb78bf Removed registering glfwTerminate with atexit. 
Functions registered with atexit are called from the thread calling exit.
glfwTerminate should only be called from the main thread.  Mistakes should be
explicit.
2012-10-22 03:20:16 +02:00

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//========================================================================
// 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 "compatibility";
if (mask & GL_CONTEXT_CORE_PROFILE_BIT)
return "core";
return "unknown";
}
static const char* get_profile_name_glfw(int profile)
{
if (profile == GLFW_OPENGL_COMPAT_PROFILE)
return "compatibility";
if (profile == GLFW_OPENGL_CORE_PROFILE)
return "core";
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_OPENGL_NO_RESET_NOTIFICATION;
else if (strcasecmp(optarg, STRATEGY_NAME_LOSE) == 0)
strategy = GLFW_OPENGL_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())
{
fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
exit(EXIT_FAILURE);
}
if (major != 1 || minor != 0)
{
glfwWindowHint(GLFW_OPENGL_VERSION_MAJOR, major);
glfwWindowHint(GLFW_OPENGL_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_OPENGL_ROBUSTNESS, strategy);
glfwWindowHint(GLFW_VISIBLE, GL_FALSE);
// We assume here that we stand a better chance of success by leaving all
// possible details of pixel format selection to GLFW
window = glfwCreateWindow(0, 0, GLFW_WINDOWED, "Version", NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
// Report client API version
api = glfwGetWindowParam(window, GLFW_CLIENT_API);
major = glfwGetWindowParam(window, GLFW_OPENGL_VERSION_MAJOR);
minor = glfwGetWindowParam(window, GLFW_OPENGL_VERSION_MINOR);
revision = glfwGetWindowParam(window, GLFW_OPENGL_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 & 0)
printf(" debug");
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");
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));
}
}
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));
printf("OpenGL context debug flag saved by GLFW: %s\n",
glfwGetWindowParam(window, GLFW_OPENGL_DEBUG_CONTEXT) ? "true" : "false");
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);
}
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