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/*
Tool that reads out GL_VENDOR, GL_VERSION and GL_EXTENSIONS and prints them to stdout.
We use glut to open a GL context.
*/
#ifdef __APPLE__
#include <GLUT/glut.h>
#include <OpenGL/gl.h>
#else
#include <GL/glut.h>
#include <GL/gl.h>
#endif
#include <cstdio>
#include <cstdlib>
int glutwin;
// Redraw on expose events.
void
expose_cb(void)
{
const char * version = (const char *)glGetString(GL_VERSION);
const char * vendor = (const char *)glGetString(GL_VENDOR);
const char * ext = (const char *)glGetString(GL_EXTENSIONS);
fprintf(stdout,"Vendor: %s\n", vendor);
fprintf(stdout,"Version: %s\n", version);
fprintf(stdout,"Extensions: %s\n", ext);
// just exit the application immediately
glutDestroyWindow(glutwin);
}
// ----------------------------------------------------------------------
#ifdef _WIN32
#include <windows.h>
#include <winbase.h>
int
WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine,
int nCmdShow)
{
#else // UNIX
int
main(int argc, char ** argv)
{
#endif
#ifdef _WIN32
int argc = 1;
char * argv[] = { "glut_glinfo.exe", (char *) NULL };
glutInit(&argc, argv);
#else
glutInit(&argc, argv);
#endif
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(512, 400);
glutwin = glutCreateWindow("GLInfo");
glutDisplayFunc(expose_cb);
glutMainLoop();
return -1;
}
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