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Iris 1.20.1 reverses the order of Vertex Buffers Rendering

Open Deadlydiamond98 opened this issue 4 months ago • 0 comments

What happened?

I'm running 1.20.1 Fabric, and the only mod I have loaded is a custom one I'm working on called WAY. I'm using the Fabric Render Event to draw 2 textures with no depth testing in the world. It renders fine without Iris, but when Iris is present, the order of which it chooses to render them is reversed (it will render the one called last first).

Iris also seems to render Water and other Transparent Geometry after these render, which shouldn't be possible as my mod is using WorldRenderEvents.LAST, which should render after those

Intended Behavior Image

Unintended Behavior Image

Here's links to Render Captures, one with and one without Iris: https://drive.google.com/drive/folders/1LA6URnB2kSi-T6TeN1VwDNlHAieAmxb_?usp=sharing

Screenshots

No response

Log output

No response

Minecraft Version

1.20.1

Iris Version

1.7.6

Operating System

Linux Mint

What is your GPU?

Radeon RX 6600, Radeon RX 6650

Additional context

2 GPU's listed due to testing 2

Deadlydiamond98 avatar Nov 04 '25 09:11 Deadlydiamond98