In Blender, a sudden change of colours is happening in my render. Why?

[wasd]

I'm looking at your scene and it works fine if I replace the "mattetranslucent" material with matte

I see no point in replacing mattetranslucent with matte, the problem is with translucent materials.

It is pretty much impossible to check if the hundreds of leafs are "well formed" for me, can you reproduce the same problem with just a single cube ?

Not right now. But in every scene I have that problem. Maybe camera volume is not bugged, it is them practically useless.

That's a perfectly formed sphere. Beside tree:

By itself:

leaf-3.png (9.53 KiB) Viewed 4558 times

[happysmash27]

After doing CPU rendering after an update, the change now appears between frames 591 and 592.

[happysmash27]

Update:

It seems that for some reason, OpenCL kernel compiling suddenly takes an insane amount of time. In other news, however, rendering the same frame does, indeed, give wildly different results on OpenCL and CPU rendering:

[Dade]

Update:

It seems that for some reason, OpenCL kernel compiling suddenly takes an insane amount of time. In other news, however, rendering the same frame does, indeed, give wildly different results on OpenCL and CPU rendering:

It looks like an NVIDIA OpenCL driver bug: sometime the break stuff, it has happened already multiple times, you can try to install the latest driver and than go back, looking for a working driver.

[happysmash27]

I use an AMD RX 480, not a Nvidia card.

[wasd]

Did you try to disable Auto-Detect Camera Volume?

CPU render

Auto-Detect Camera Volume:
591

592

Camera Volume Disabled:
591

592

It's not some "malformed mesh geometry" problem. What can possibly be "malformed" in a bunch of parallelepipeds?