Can't remove Black from Geometry Nodes in Blender 4.1

Gioxyer · April 18, 2024, 7:22am

System Information
Operating system: Windows 11 Home
Graphics card: Ryzen 5 5500U Vega 7 (mobile graphics card)

Blender Version
Broken: (example: 4,1, official release, as found on the splash screen)
Worked: /

Short description of error
Open project from frame 700 to 850, in particular from frame 850 black color still appear on Rose, even if the color attribute is white that become alpha. On Shading mode appear correct, when render appear with black artifacts

Exact steps for others to reproduce the error
Open blender file
just go on frame 750 to 850 (on Alpha applied the rose diseapper correctly but appear black color instead of full trasparent mode)

Blender file as WeTransfer file:

I already reported in Blender

Do you know if there is an alternative to this node setup in Geometry Nodes that don’t display black issue in Cycles?

Jvry · April 18, 2024, 9:18am

Looks like this just got answered in the bug report by Alaska:

You’ve forgotten to turn your transparent bounces up to a value high enough for the scene you are rendering. You can fix this by just increasing the transparent bounces option here:

Let us know if this solves the issue, or if you still need help with it.
Also, I can’t seem to access the file from the linked site.

Gioxyer · April 18, 2024, 9:34am

Fixed thanks