🔒 pygame being extremely slow

[light crown]

hi, i am trying to wtite a program that takes an image file and then puts it into the pygame screen pixel by pixel, its working very well but it's extremely slow

import pygame
import time
iss = pygame.image.load('myimage.jpg')
pygame.init
sc = pygame.display
w,h = iss.get_width(), iss.get_height()
ds = sc.set_mode((w,h))
ru = True
cl = pygame.time.Clock()
sc.set_caption("hi")
x,y=0,0
for y in range(h):
    for x in range(w):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                y=h
                break
        ds.set_at((x,y), iss.get_at((x,y)))
        x +=1
        print(x,y)
        sc.flip()
    y+=1
time.sleep(50)
pygame.quit()

[quartz star]

@light crown

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[dusky sundial]

I think doing anything pixel-by-pixel is going to be slow.

why do you want it to be one pixel at a time?

[little parcel]

if its an aesthetic loading thing, why not clump it into pixel groups of something like 50x50 pixels or something to speed it up

[light crown]

honestly thats the only way i know other than blit i think

its not only that, when i go through each pixel to assign a random color it does the same thing, very slow

[light crown]

how do i do such thing

[little parcel]

well first, do you want it to be pixel by pixel or just insert the image in in one go?

[light crown]

could you teach me both

[little parcel]

to just put it in is a google search, https://www.geeksforgeeks.org/python-display-images-with-pygame/

as for clumping the pixels like that, its possible yes, but i dont know how to do it off the top of my head since ive never needed to

[light crown]

i do know about blit
but for example if i want to randomize every pixel, it takes too long

[little parcel]

what if you assigned every pixel then updated the screen?

something tells me you might be updating the screen every pixel draw

[light crown]

yes i am indeed updating every pixel, though it didnt make a difference, i just wanted to see the progress

[little parcel]

yeah its just going to be slow no matter what you do

you might be able to multithread the generation and then just iterate through the list it produces as it makes it to make it slightly faster, but thats still going to be slow

[quartz star]

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