VSYNC

vsync.py

# I already added code to enable it. It should just work
# But it doesn't work on my machine either. I just followed the SDL2 docs...
# https://wiki.libsdl.org/SDL_CreateRenderer#flags
# You need to pass in SCALED to display.set_mode and have PYGAME_VSYNC=1 in your env vars
# vsync with opengl works differently
# vsync without SCALED is not planned by SDL2.

import os

os.environ["PYGAME_VSYNC"] = "1"

import pygame

pygame.init()

screen = pygame.display.set_mode((320, 240), pygame.SCALED)
clock = pygame.time.Clock()
print(pygame.display.get_renderer_info())


s = pygame.Surface((50, 50))
s.fill((255,255,255))
r = s.get_rect(center=(160, 120))

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            exit()
        
    pressed = pygame.key.get_pressed()

    if pressed[pygame.K_LEFT]:
        r.x -= 1
    if pressed[pygame.K_RIGHT]:
        r.x += 1

    clock.tick()
    pygame.display.set_caption(f"{clock.get_fps():02.02f}")
    screen.fill((0, 0, 0))
    screen.blit(s, r)
    pygame.display.flip()