So I set up this campfire project, with effectors, emitters, and all. I added a particle system to create the forest seen in the picture. 4K, 2048 samples, here are the settings
As you can see there’s a weird gray area in the fire, and some more glitches in the bloom around it. Any idea as to the issue and a solution?
i am sorry, but i totally disagree with “not much needs to be said” because we have no idea what you made and how you made it.
So pls provide a blend file so we can check it out on our own. There might be dozens of reasons why this can happen.
Hey, sorry about that! Added more details and here’s the file link:
can u pls provide a blend file, in which
a) the camera is setup in that way you provided your screenshot
b) tell us the frame which you are talking about?
c) maybe make a red circle around the “problem” because i am not so sure what you mean…
thx.
I can’t find any campfire at all in that file. did you pack all external resources? It also crashes blender 4.4, seems to be created in a very early alpha of blender 5 so maybe just a bug.
Yes, I did, maybe try freeing and baking it again.
The camera is the same. Also I hid all objects to help direct all processing power to the render. The frame is already correct, AKA frame 15.
Here’s the new pic:
For now I’m just using a different flame. Workbench shows really different outputs though
I notice the glitches change when I zoom on your image. Is this rendered with a transparent background and saved as an RGBA PNG? Because it’s well known that PNG can’t store the bloom effect over a transparent background.
PNG doesn’t support additive transparency. Pixels that contain light data without blocking the view of what’s behind them. It only supports transparency that partially blocks the view, like smoke.
What happens if you render with an opaque background?
I’ll try that now!
It worked perfectly fine, thanks! Now, could you help me with how to render an image sequence? I tried it and got 31 copies of the same picture
Your file crashes for me, so I’m not sure I can really try much. Maybe the file itself could have problems. I can open it in 4.5, but I get random crashes.
I managed to bake the fire at reduced resolution and render a few frames with low quality. It did work correctly for me, at least with the file you uploaded earlier.
Have you activated “persistent data” since? I have seen it prevent certain things from updating between frames when they should.
Maybe you are in a weird, experimental version of Blender and that’s just a bug? Try opening it in a more stable version. I doesn’t open in 4.4, so maybe a more recent 4.5.
Hey there! Sorry, I forgot about this page for a while! I gave up on this project, since the rendering was too much for my laptop, but yes, I had persistent data on 5.0. Thank you for your assistance!
