When displaying an effect that uses an Universal Render Pipeline/Unlit shader for the first time, the process of GpuProgramMetal.GetCachedPipeline on iOS and CreateGraphicsPipelineImpl on Android takes a lot of time. In what cases does this occur and is there any way to avoid it? Version of Unity:…

I’ve encountered this phenomenon as well and would like to know how to resolve it.

Yup, I’ve the same problem with unity version 2022.3.16f1 and URP version 14.0.9

@norimatsu_yusuke Could you edit the name of the title to include : GpuProgramMetal.GetCachedPipeline , that will capture the attention of Unity internal engineer

We’re having this issue too, 2022.3.29f1, URP 14.0.11. Did any of you find a good solution? Haven’t been able to get rid of it by shader warmup APIs (it doesn’t seem to be triggered by a gpu shader upload, at least it doesn’t log anything or have a profiler entry for gpu program creation).

any solutions for this issue? Still an issue in Unity 6000.0.23f1 on an ios platform

this is happening when the app load the shaders for first time. to make sure this only happen once, make sure you setup shader variant correctly which include all the shaders in the game, and set it to load when the game launch… this way, the spike for loading the shader first time only happen once…

I’ve already tried using Shader Variant Collections to load the scene, but unfortunately, it hasn’t resolved the issue I’m facing. The first-time shader loading spike still occurs, especially with Skinned Mesh Objects on iOS.

Yes, thats the point , the shader loading spike only happen at first time… and not again during the game

That’s exactly the problem. Even when I load the Shader Variant Collection at the start of the game using shaderVariantCollection.WarmUp(), it seems like Unity ignores this step. I’ve enabled shader compilation logging, and unfortunately, I still see shaders being uploaded to the GPU despite preload…

At the following thread, the cause of the problem and the solution seem to be described. [image] GraphicsStateCollection Tracing and Warmup in Unity 6 Unity Engine Greetings from the Unity Graphics team. Unity 6 introduces a new and powerful Pipeline State Object (PSO) tr…

The process of getting graphics pipeline(GpuProgramMetal.GetCachedPipeline on iOS) takes a lot of time when displaying for the first time

Unity Engine

norimatsu_yusuke October 21, 2024, 3:03am 11

At the following thread, the cause of the problem and the solution seem to be described.

For Unity 6, however that is an experimental API, GraphicsStateCollection warmup will help us.

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The process of getting graphics pipeline(GpuProgramMetal.GetCachedPipeline on iOS) takes a lot of time when displaying for the first time

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