Hi friends…
i am new to opengl. i am having problem in using the opengl application in a multi thread programme.
here is sample of my programme:
void * PlotTringle(void threadid)
{
long tid;
tid = (long)threadid;
printf("Hello World! It’s me, thread
");
int argc;
char* argv;
int w=1362;
int h=688;
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (2000, 2000);
glutCreateWindow (argv[0]);
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glShadeModel (GL_FLAT);
glClearColor (0.0, 0.0, 0.0, 0.0);
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if (w <= h)
gluOrtho2D (0.0, 1.0, 0.0, 1.0*(GLfloat)h/(GLfloat)w);
else
gluOrtho2D (0.0, 1.0*(GLfloat)w/(GLfloat)h, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
drawLeftTriangle();
drawRightTriangle();
glFlush();
glutMainLoop();
return 0;
}
void * GetData(void threadid)
{
long tid;
tid = (long)threadid;
printf("GetData
");
/ code to get data */
}
int main(int argc, char** argv)
{
pthread_t thread1, thread2;
int rc1;
long t1;
printf("In main: creating thread %ld
", t1);
rc1 = pthread_create(&thread1, NULL, PlotTringle, (void *)t1);
if (rc1){
printf("ERROR; return code from pthread_create() is %d
", rc1);
return(-1);
}
int rc2;
long t2;
printf("In main: creating thread %ld
", t2);
rc2 = pthread_create(&thread2, NULL, GetData, (void *)t2);
if (rc2)
{
printf("ERROR; return code from pthread_create() is %d
", rc2);
return(-1);
}
return 0;
}