Pygame BLEND Fullscreen Bug

Question

好的，所以我一直在使用special_flags BLEND_MULT表面为我在pygame中制作的小游戏添加一些光照。

当程序窗口化时工作正常但是，每当我尝试使窗口全屏幕的BLEND表面不与其余组件全屏时，它只是延伸到屏幕边缘。因此，BLEND表面上的任何渐变都处于错误的位置。

This image shows the error when I have the Window Full screened

我知道这是special_flags的一个问题（而不是我错误地将表面弄错）因为当我删除了special_flags参数时，表面填充屏幕与其他组件完美匹配

This image shows the window correctly Full screening

基本上我要求一种方法来修复这个bug，以便我可以保留special_flags参数，而不会在全屏幕上打破。这样我就不必完全重做我的照明。

以下是将表面（雾面）绘制到游戏显示中的代码

def render_fog(self):
    #draw light onto fog
    for fog in self.all_fog:
        fog.image.fill(fog.colour)
        self.light_rect.centerx = self.player.rect.centerx - fog.x
        self.light_rect.centery = self.player.rect.centery - fog.y
        fog.image.blit(self.light_mask, self.light_rect)
        for light in self.all_light:
            light.centerx = light.x 
            light.centery = light.y
            fog.image.blit(light.image, (light.rect))
        self.gameDisplay.blit(fog.image, (fog.x, fog.y), special_flags = pygame.BLEND_MULT)

这是一个在全屏显示相同错误的示例，只需按f即可

import pygame
import sys
from os import path
from time import sleep
import random

WIDTH = 864
HEIGHT = 512
NIGHT_COLOR = (20, 20, 20)
RED = (255, 0, 0)

class Game:
    def __init__(self):
        pygame.init()
        self.gameDisplay = pygame.display.set_mode((WIDTH, HEIGHT))
        self.clock = pygame.time.Clock()

        self.running = True
        self.fullscreen = False

        self.load_data()

    def load_data(self):
        self.fog = pygame.Surface((WIDTH, HEIGHT))
        self.fog.fill(NIGHT_COLOR)

    def quit(self):
        pygame.quit()
        sys.exit()

    def run(self):
        self.playing = True
        while self.playing:
            self.dt = self.clock.tick(60) / 1000
            self.events()
            self.draw()

    def events(self):
        for e in pygame.event.get():
            if e.type == pygame.QUIT:
                self.quit()

            if e.type == pygame.KEYDOWN:
                if e.key == pygame.K_f:
                    self.fullscreen = not self.fullscreen

    def render_fog(self):
        self.fog.fill(NIGHT_COLOR)
        self.gameDisplay.blit(self.fog, (0, 0), special_flags = 
pygame.BLEND_MULT)


    def draw(self):
        pygame.display.set_caption("FPS: 
{:.2f}".format(self.clock.get_fps()))

        if self.fullscreen:
            self.gameDisplay = pygame.display.set_mode((864, 512), 
pygame.FULLSCREEN)
        else:
            self.gameDisplay = pygame.display.set_mode((864, 512))

        self.gameDisplay.fill(RED)
        self.render_fog()     
        pygame.display.update()

g = Game()
while g.running:
g.run()