255 lines
10 KiB
Python
255 lines
10 KiB
Python
# THIS FILE IS A PART OF VCStudio
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# PYTHON 3
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##############################################################################
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# Now you are probably asking yourself. Network? Render? How are these related?
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# Actually it's a complicated answer. So let's walk through the idea of the
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# Renderer implementation in VCStudio.
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# Why do we need renderer in the first place? Doesn't blender already has one?
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# Well yes. And I would not care if I was always sitting on a biffy, nice
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# machine. But back in 2016, 2017 when I was making I'm Not Even Human I realized
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# one very ennoying fact.
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# My lap top at the time could not manage the loads of the files. And while
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# rendering Blender would crash very often. Of course I was not dumb as was
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# rendering into image files and not straight into video. So I could start
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# rendering from the last frame.
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# Unfortunatly it was happening way too often. So I started looking at ways to
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# unload things from the memory so Blender would crash less. One of those ways
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# is rendering using a console. Type blender -b <filename> -a and it will launch
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# blender without UI saving some memory. Also I could do a simple script that
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# restores Blender when if it does crashes.
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# By the time of Blender-Organizer 4.0 I had a system of rendering that will
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# look into a folder and see if any file between start and end frame are missing
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# and render them. Instead of trying to render every single frame in sequense.
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# Also in Blender-Organizer 4.0 I made a very clever thing. I openned the
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# rendering not in a terminal, but rather in it's own process that is piped to
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# a little UI window. Where I show some quick analytics. Tho there was one
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# problem. Closing the window was closing the blender. Or if not there was no
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# way to cancel it. And it would continue till the end or till the crash.
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# So here since VCStudio is a complite re-write of Blender-Organizer I can try
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# to re-implement the renderer in a slightly better way.
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# I will run a script that recieves stuff from the pipe and has an ability to
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# kill the blender's process. And this script will have no UI. But will instead
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# use LOCAL NETWORK to talk to VCStudio. I'm using 127.0.0.1 for this so on
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# any normal system even without Internet connection it should work. Since this
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# IP adress simply means THIS COMPUTER.
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# I will probably implement some LOCAL NETWORK talk ability later for the
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# multiuser.
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# This file is collection of functions for Rendering network sub-system. The UI
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# are contained in studio folder. Render it self is a separate file.
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##############################################################################
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import os
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import json
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import socket
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def read_renders(win):
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# This function will listen for 127.0.0.1 port 54545 for data about current
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# renders. NOTE: I'm not doing any encryption and will use UDP protocol.
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# so it's quite simple to mess arround with it. NO SECURITY. But I don't see
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# any use in hacking it appart from maybe making VCStudio think it's rendering
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# a different frame or something.
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# First thing. And you probably think that I'm crazy but bare with me. I
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# need to see if a active_renders.data exists. And will read from it on
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# each frame. I know. A bit of not cool. But to be honest. The language
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# files are also read at every frame. Yeah...
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if not os.path.exists(win.project+"/set/active_renders.data"):
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m = open(win.project+"/set/active_renders.data", "w")
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m.close()
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# Now we are going to read it on every frame to see that renders are still
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# there.
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r = open(win.project+"/set/active_renders.data")
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r = r.read()
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r = r.split("\n")
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filenames = []
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for filename in r:
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if filename:
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# So basically the file contains list of files currently placed for
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# rendering. The renderer will go one by one and when finised will
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# remove the filename from this file. Also to cancel the render the
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# filename should be removed. The rest will be done using a very
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# crappy UDP network protocol on localhost.
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# Now if you just openned the VCStudio. While maybe render were
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# doing their job somewhere on the background. You want to re-new
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# all of the data.
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# So...
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if filename not in win.renders:
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# We are going to read the JSON file of the render.
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folder = filename[:filename.rfind("/")]+"/extra"
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savefile = folder+filename[filename.rfind("/"):]+".json"
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# It might not exits so we are going to do this with try.
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try:
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with open(win.project+savefile) as json_file:
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data = json.load(json_file)
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win.renders[filename] = data
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except:
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pass
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# Now let's make a list of all lines anyway
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if filename not in filenames:
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filenames.append(filename)
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# Now let's remove any of them renders that are finished or otherwise
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# removed from the file.
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for stuff in list(win.renders.keys()):
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if stuff not in filenames:
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del win.renders[stuff]
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try:
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if stuff == win.current["renders_window"]["filename"]:
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win.current["renders_window"]["filename"] = ""
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except:
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pass
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# Now that we know about the data. Let's read the stream from the network
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string_read = ""
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try:
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UDP_IP = "127.0.0.1"
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UDP_PORT = 54545
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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sock.bind((UDP_IP, UDP_PORT))
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# Now usually it will wait for a message untill one appears. But render
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# could be finished. Or some error might accur. Or it could be that no
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# render what so ever. So I don't want the UI to freez. So I'm going to
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# put a timeout. Very short timeout.
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sock.settimeout(0.005)
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# This comes with it's own problems. Mainly I tested I need to send
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# about 500 messages at ones for it to be recognized at all. But it's
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# not a big deal what so ever. Just need to keep in mind. 500 messages.
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data, addr = sock.recvfrom(1024)
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data = data.decode('utf8')
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sock.close()
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string_read = data
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except:
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pass
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# Now let's do something with this data we read from the stream.
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# We gonna complitelly ignore anything unrelated. Such as not from
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# the project.
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if "network_render_timeout_frame" not in win.current:
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win.current["network_render_timeout_frame"] = win.current["frame"]
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if string_read.startswith("VCStudio : "):
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if ": RENDERING :" in string_read:
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blend, blend_string = string_read.split(" : ")[2], string_read.split(" : ")[3]
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# So we've got 2 peaces of data from the renderer. Blender. Which
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# is a path to the blend file. Similar to the one in
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# active_renders.data file that we read previously.
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# And we've got a raw string that blender outputs during render.
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# Example:
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# Fra:70 Mem:93.09M (Peak 97.78M) | Time:00:01.83 | Rendering 26 / 64 samples
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# You can find a string like this in the top banner inside the blender.
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# From this string we can find out a bunch of things. But not everything is
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# that simple. Cycles and Eevee for exmple output different strings. Any
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# other, wild render engine will output it's own string.
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# Now I'd like to actually load the data from the JSON file at every step
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# like this. Because our rendering script will be recording and saving
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# render times of each frame into the file. I need it for analytics.
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if blend in win.renders:
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folder = blend[:blend.rfind("/")]+"/extra"
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savefile = folder+blend[blend.rfind("/"):]+".json"
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# It might not exits so we are going to do this with try.
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try:
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with open(win.project+savefile) as json_file:
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data = json.load(json_file)
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win.renders[blend] = data
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except:
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pass
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win.renders[blend]["rendering"] = blend_string
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# Next is let's try finding out the current frame rendering. It's
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# probably not that hard. Every string usually starts with Fra:<number>
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# So let's try doing it.
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frame = 0
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try:
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frame = int(blend_string[4:blend_string.find(" ")])
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except:
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pass
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win.renders[blend]["current_frame"] = frame
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# The rest of it I will do in the UI.
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win.current["network_render_timeout_frame"] = win.current["frame"]
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# Now sometimes for no particular reason the whole rendering thing could crash
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# or in other words. If there is no data sent. We want to clean the renderings
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# and make it so the user sees that renders DO NOT render. For this there should
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# be a timeout system. Basically if in a given amount of frames there is no message
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# from the renderer script. We going to say that it's not rendering.
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if win.current["frame"] - win.current["network_render_timeout_frame"] > 100:
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for blend in win.renders:
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win.renders[blend]["rendering"] = False
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def stop_render(win):
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# This function will stop the rendering. It will bombard the renderer with
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# stop messages.
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for i in range(5000):
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cs1 = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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cs1.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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cs1.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
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cs1.sendto(bytes("VCStudio : RENDER STOP", 'utf-8'), ('127.0.0.1', 54545))
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