FPS with Pyglet half of monitor refresh rate

Question

I\'m new to working with Pyglet and I\'ve written a small program which moves a ball around the screen. Right now I\'m having difficulty establishing a steady frame rate of

Answer 1

import pyglet
from time import time, sleep

class Window(pyglet.window.Window):
    def __init__(self, refreshrate):
        super(Window, self).__init__(vsync = False)
        self.frames = 0
        self.framerate = pyglet.text.Label(text='Unknown', font_name='Verdana', font_size=8, x=10, y=10, color=(255,255,255,255))
        self.last = time()
        self.alive = 1
        self.refreshrate = refreshrate

    def on_draw(self):
        self.render()

    def render(self):
        self.clear()
        if time() - self.last >= 1:
            self.framerate.text = str(self.frames)
            self.frames = 0
            self.last = time()
        else:
            self.frames += 1
        self.framerate.draw()
        self.flip()

    def on_close(self):
        self.alive = 0

    def run(self):
        while self.alive:
            self.render()
            event = self.dispatch_events()
            sleep(1.0/self.refreshrate)

win = Window(23) # set the fps
win.run()

Note the lack of the clock feature. Also, try setting vsync = True and removing the sleep(1.0/self.refreshrate), this will lock the refresh rate to your monitor.

Also, note that i don't use pyglet.app.run() to lock the rendering process, i call self.dispatch_events() instead.. it doesn't really do anything except let the graphic "poll" and move on, without it.. pyglet waits for a poll to occur, which pyglet.app.run() normally does.