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Duplicate

Votes

4

Found in

5.5.2p2

Issue ID

901330

Regression

No

[iOS] Vertex shaders are recompiled at runtime even when using Preloaded Shaders in Project graphic settings

Shaders

-

Reproduction Steps:
1. Open User's project
2. Build to iOS
3. Open Xcode project
4. Run Profiler - "Metal System Trace"
5. Inspect the "Shader Compilation" column
6. Notice that vertex shaders has been recompiled at run time

Expected behaviour: Fragment and vertex shaders to get pre-compiled when being specified in a Shader Variant Collection referenced from the graphic settings.
Actual result: Vertex shaders are recompiled at runtime even when using Preloaded Shaders in Project graphic settings

Reproduced on versions: Unity 5.5.2f1, 5.5.3p1, 5.6.0f3, 5.6.0p2, 2017.1.0b1
Reproduced on devices: iPhone 6 iOS 10.3.1
Reproduced on Xcode 8.3

  1. This is a duplicate of issue #863868

    Shader prewarming doesn't actually work on most renderers
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Comments (2)

  1. Johannski

    Aug 10, 2017 10:55

    I did notice the same problem with 5.6.1p4. Is there a workaround yet?

  2. acamara

    May 09, 2017 21:10

    This issue is marked as Severity 3: Workaround is possible. Can somebody point me out what's the workaround? We don't know how to avoid recompiling the vertex shaders.

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