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from __future__ import print_function
from OpenGL.GL import *
from OpenGL.GLUT import *
from OpenGL.GLU import *
import time, sys
resX, resY = (400, 300)
def display():
glutSetWindow(window)
glClearColor(0.0, 0.0, (time.time() % 1.0) / 1.0, 0.0)
glClear(GL_COLOR_BUFFER_BIT)
glFlush()
glutSwapBuffers()
sys.stdout.write('OK\n')
sys.stdout.flush()
if glutLeaveMainLoop:
glutLeaveMainLoop()
if __name__ == "__main__":
glutInit([])
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH)
glutInitWindowSize(resX, resY)
glutInitWindowPosition(0, 0)
window = glutCreateWindow("hello")
glutDisplayFunc(display)
for name in (GL_VENDOR, GL_RENDERER, GL_SHADING_LANGUAGE_VERSION, GL_EXTENSIONS):
print(('%s = %r' % (name, glGetString(name))))
glutMainLoop()
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