Stylistic, I just like it. You could also make the argument that it’s easier to change lol
1 Like
I’m not seeing the use case here.
If the use case is screenshots, this is not the right way to implement this
If the use case is shaders…this is not how you do shaders.
If the use case is picture-in-picture for security cameras, this is again not how to implement this.
Dealing with images on the cpu is rather slow so all of the above solutions would be done with a much faster implementation supporting the gpu (shader languages, rendering to a texture for PIP display, etc).
7 Likes
You could actually get the color of a pixel btw. A simple recursive on the GUIs (gets a lot more complicated if you care about Z-Index), and then there is camera api where you could also work this out if you need it for a small thing
For the future: The best way to get heard by engineering is to show them a problem, not a solution. Any situation where you would need to work directly with pixels probably counts as a problem.
8 Likes
Can confirm, we are suckers for a problem to solve.
7 Likes
From what I’ve read this sort of method would be a way off-course solution for what you requested it for.
Why not just add some GUI element that serves as a viewport, where you can specify a Camera and a viewport size/position?
Oh you have no idea.
Imagine a 1920x1080 monitor at 60 FPS. You’re looking into manipulating over 124,416,000 (1920x1080x60) Color3 values PER SECOND in Lua. Each Color3 value is represented with doubles (8 bytes, 64 bits) there are 3 doubles used to represent RGB values in Color3, (24 bytes, 192 bits) so you would be consuming over 23,887,872,000 bits, or 23.8 GBs to be short, just to represent all that data on the CPU. And that’s not even counting the memory you’d be consuming to visualize all of those pixels as frames. Roblox only allows you to have 16,384 GuiObjects on the screen at a time (iirc), so you wouldn’t have much luck there.
TL;DR - It won’t work for what you’re thinking. Let the GPU do its job and save the CPU from having a heart attack.
9 Likes
LPT: If you ever need to measure anything in units of millions of pipeline stalls/frame, just run
2 Likes
Or do it on the GPU which is built for that sort of task.
2 Likes
When will they finally add this man, you could do so much cool things with this and even if “people will be bypassing it” nothing will change people are already bypassing stuff by just using parts as pixels or 1x1 frames. this needs to become a feature it adds so much cool things to do!
1 Like
Not quite in the form suggested here, but the pieces to make this possible will becoming together soon.
CapureService is in development (the final public API will look a lot different than what you see there) as a way to deal with taking screenshots, and combining that with EditableImage you’ll be able to take and read / modify the pixels in a screenshot.
9 Likes
I hope It doesn’t cause much memory to use while RenderStepped, since I’m trying to do if you look at a pixel the more black it is the more visible it becomes like a custom blend mode basically
As discussed above: There’s unfortunately no way you’re applying any full-screen effect at 60fps be reading individual pixels. Also, the screenshot path will require user interaction (you can’t just take a screenshot silently in the background). Either way, screen space effects aren’t happening using this.
4 Likes
Will these screenshots be available in-game? Possibly as some sort of temporary rbxscreenshot content type would make sense.
Will there ever be an api, which will be able to return the pixel color of the render, without any gui elements? This would be really useful to create custom shaders, such as color based lens flares and screen space reflection.
create custom shaders
no that’ll never happen and it’s not even practical to do in the first place
it’s both expensive to pull the viewport’s framebuffer and to perform shader operations entirely in software
gpus specialize doing things in complete parallel and are generally better in arithmetic than cpus
I might /+ctrl+v+enter without looking at the chat bar thinking that i copied something when i forgot that my previous copy was my ip
And oh no turns out something went wrong with copying now i accidentally announced my ip im cooked
Pls roblox remove the chat features its unsafe 
Search image loader people can put high quality photos using it lol
If you are scared of player fps dropping then no proprem 
go to each 9 pixels split them
And get the colour at the middle or make some algorithm that gets the most repeated colour
There you go you made it 9 times smaller now🔥
what about different screen sizes?
That’s something the programmer should care about, not Roblox.