Rendering and getting a black render?
AnneWertheim
Posts: 135
I am struggling rendering a simple scene. All I get is a black render after I hit "Render"?
Post edited by AnneWertheim on
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Does moving the camera help? It may be behind a wall, or behind a light if your lights have a shape assigned (you can turn Render Emitter off to fix that).
No, it doesn't seem to have anything to do with light or camera. Even if I only start a new document, put one figure in, render, I get a black png file.
If you have added a light to the scene it could be that it is not bright enough for the camera, render settings normally have the option to "auto lighting" ie, when you add a light the scene removes light. I find sometimes if I just add a light it is not bright enough and I get a black screen. I am not very good with lighting... in fact lights and cameras are a challenge for me but I ended up buying some presets that help.
If you have added lights look at the intensity, it is probably low.
If you have added lights try just deleting them first and render see if you get more than black, and if you do you will know its the level of the light is low.
After that, I'm not one to answer ANYTHING about light... not until I get a better handle on the expectation I have and what I actually achieve lol.
Can you post your render settings, i.e. what engine you are using, what environment setting...?
I had the engine on Nivica Iray, which gave me the black render. I switched it to Basic Open GL and now it is rendering, except I am getting a warning that this setting might corrupt the file.
Which setting should I have it on?
Please set it to Nvidea Iray, and post from the listed item points the settings of "Environment". They star with information about Dome and Scene, or wjatever is selected.
Also, how long did you wait for the render, in the small window that shows the progress, could you see that it was doing Iterations? Or was it just saying "Rendering"?
I am having a hard time understanding what you are asking me to do. When I go to Enviroment, Environment Mode is set to SunSky Only.
It takes about 30 seconds for rendering a black window.
The Sun-Sky Setting uses "Time of the day at a specific location". It is entirely possible that the time and location you have selected (That is the latitude/Longitude/SSDAy/SSTime/SSUTC Offset) combined will end you up in the middle of the night.
Also, the Sun-Sky setting doesn't make use of any other lights in the scene.
Here's the suggestion: change the settings of the koordinates to your own location (or use this table: https://www.infoplease.com/world/world-geography/major-cities-latitude-longitude-and-corresponding-time-zones), set the SSUTC offsett to the appropriate time zone different, and then select a time where you know the sun will shine.
Please let me know if that makes a difference.
EDIT: please enter the following values (for London):
SS Latitude 51.50853
SS longitude -0.12574
day 06/29/2018
time 11:00am
SSUTC Offsett 0
Alternately, you can switch to Dome and Scene. This should have a HDRI-file automatically plugged in to give light, but if not, that can be fixed. What is more important is that it should at least give you the light from the Distant Light that you loaded into the scene, though you might want to increase the angle slightly, I think it's on level with the horizon at the moment).
I have a solid black render as well. I followed your steps Bee, did not work.
Are you sure there's a way for the lightt o get into the area you are trying to render?
What's in your scene, did you load any skydome? can you please check in your scene tab?
I rendered with Dome and Scene, as well as Sun-Sky. I still get a black render. I did not load a sky dome. I have a distant light and a Point light in the scene
Anne, in the Sun&Sky Scene, did you change the time and location settings as described in my post, and still get black?
Yes, I did. I still got a black render with your settings put in.
Mhm....
okay, there is one last thing that might work. In DIM, in the installed files, locate "Default Resources for DAZ Studio 4.9+".
Uninstall them, if neccessary, redownload them, and then install them again.
It might be possible that the lights were lost somewhere in the folder moving around that happened earlier. But it's just a guess.. Keeping my fingers crossed!
Oh my - I uninstalled "Default Resources for DAZ Studio 4.9+" and then deleted them. Now I can't find where to redownload them?
Manually, through Install Manager, or inside DS?
It's not showing up in the "Ready to Download" tab of DIM?
Try SKU::13176 in the search field. Please check the tabs ("Ready to Download"/"Ready to Install"/"Installed") if it shows up somewhere.
Nothing changed after deleting and reinstalling.
What is puzzling to me is that if I switch to Basic OpenGL it renders just fine, except I get a warning that rendering might corrupt my file.
Why would I be able to render in Basic OpenGL and not in Nivida Iray?
That is a very good question, i.e. As all the regular things were checked - like, that you have checked CPU or your card in the Advanced tab of the render settings, and so on.
The render log (Help-->Troubleshooting-->Log) also did not give any clues. And rendering in 3Delight also works.
It is weird.
EDIT:
One last ditch effort. Let's run off the basics checklist again, just to make sure we have covered everything:
- Render one of the black images and post the log entries of the render (can be an attached txt file).
- Check the Advanced Tab in Render settings: In rendering devices, at least CPU is checked.
- If you have an nVidea graphics card, it has the latest driver installed. It is also checked as rendering device in the Advanced Render settings tab.
I'm really sorry that I'm asking you to check these things again, but maybe there is something we overlooked.
OMG - the CPU wasn't checked. After checking CPU I finally got a render. It took forever though (40 minutes for a simple Genesis 3 figure with clothing). I rendered at 2500 x 3235. Is there a way to speed the render up? Is that size just way too big?
I checked CPU for Photoreal Devices. What are "Interactice Devices"? I left that CPU unchecked.
I am so glad I finally got somewhere. I really appreciated the help and sticking with me. Thanks!
Yay! *throws confetti*
Okay, the "Interactive Devices" ... In "Render Settings" you have "Render Mode". There, you can select between "Photoreal" and "Interactive". The Interactive mode uses a slightly different math for calculations of the image. If you have no render device selected for that mode and you switch to it, you'll get a black screen again. I'd just check CPU in "Interactive" as well.
Render times... If you are rendering CPU only, rendering times will be glacial. Literally hours to days, depending on what is in the scene. 40 minutes isn't a bad time for CPU, though.
A real increase in render times happen when you add an nVidea graphics card into the render equatation. That comes with its own problems, outside of the financial aspect; the scene you want to render has to fit on the card in its entirety, our it will fall back to the CPU, and again, glacial render times. So, you need to know your render habits before making a decision about what type of card you need, and if you can fit it into your PC.
But if you are still in the "tryout phase", I'd suggest going with avoiding indoor scenes and using "sun&sky" or HDRI (dome and Scene) for light. Also, you don't have to wait until an image is "complete" - you can cancel the render at any time if you feel that it looks good enough.
I had the same problem, and found this thread here.
Just now i digured out what was causing the Black Render Screen for me, i had a scene with two characters inside a building. If i moved my cameras or created new cameras wich are not near the characters, then the render turned black, just a blank black picture i've got.
The cameras near the characters worked well, so i thought, this must be something with the distance.
Then i was thinking of the Sphere Option, in the Render->Environment setting, by simply turning off the Dome -> "Draw Dome" -> OFF, my renders worked again.
So it's maybe the dome wich gets drawed or the sphere, or i am totally wrong, but anyhow it works now.
:o)
I am having the same problem, never had a issue until update 4.12.1.117. I can click the render button above the render editor tabs and I'll get a black render. If I click the render button above at the top toolbar It will render. Other times this is completely reversed. If one doesn't work try the other one and see if it's the same problem I'm having, I'm very curious.
Me too. And I'm beginning to think that most people in this forum have no idea what causes what or how to change it in DAZ Studio. Which is hardly surprising since DAZ Studio documentation is totally inadequate rubbish. In fact, I beginning to think that DAZ3d technical support isn't up to the job.
There are several things which affect the renders.
In Iray for 'scene only' - if one has not created some lights, it will render black.
I put in a distant light and a spot light, turning up the intensity for both. Everything else was the default.
Then in the Render Settings one would use 'scene only'. The dome lights feature and the 'create a light' features do not work with each other.
Or one can use the Dome features and add a primitive, make that primitive emissive [change the black to white], light type to the k type, cutout geometry to something like 0.00001.
Note that, regardless of where it's avatar is in the scene, a distant light shines from "outside" and so will be blocked by any enclosure (such as the walls of a room). Also, the default Tone Mapping settings (in Render Settings) are not enough for most scene lights.
He is there a problem with Beam light and only Sunsky since the last patch,
When I put my light up (beam light) everything seems to be perfect, but when I add a sunsky with an NP and everything, no beam light, it's like the sun is swallowing all the other light.
Regardless of how intense (or not) I set the sun sky, it doesn't change.
No other light than the sunlight is in the final render showing up.
HELP?!
Just to make this clear. it worked before the last patch!