GPU Instancing wont work.

Using 2021.2.0f1
Using HDRP 12.1.0
SRP Batcher is enabled in Pipeline Settings
GPU Instancing is selected on material

Material uses a Shader Graph which has Vertex Displacement wind sway

WHY is this not batching? I go to the profiler and get some silly "Node Have Different Shaders" reason which looks like a child wrote it and is as clear as mud, any chance Unity could come up with a coherent sentence to describe a problem?







It's becoming irritating that I have to launch a full on investigating into something that should simply work the first time, if SRP Batcher is on, and GPU-I is checked then these materials should be batched.

 

It's a batch of 317 instances. The message just tells you why this batch is not merged with the SRP batch above it in the list. Different shader means: shader or keywords not matching.

 

In the second screenshot its showing that nothing is being batched together, why?

All these use exactly the same shader

 

NVM. I disabled the batcher and now it apparently works...

 

Well, Unity should probably have used a new word for batches in SRP context...

The SRP version looks like it works as intended. SRP draw calls are much much cheaper than non-SRP draw calls. Did you compare performance?