Crash with latest version (v1.27) UE5.1.1

Cesium for Unreal
1

Hi ,

I just updated the plugin to the latest version (today version 1.27 / UE5.1.1), since then I cannot launch my project anymore .
If I disable the cesium plugin in the uproject file, projects launch well.

Here’s the error log :

[2023.06.08-19.35.43:486][ 0]LogShaderCompilers: Warning: 3 Shader compiler errors compiling WorldGridMaterial for platform PCD3D_SM6:
[2023.06.08-19.35.43:486][ 0]LogShaderCompilers: Warning: Shader debug info dumped to: “E:/Git Unreal/PROJECTNAME/Saved/ShaderDebugInfo/PCD3D_SM6/WorldGridMaterial/Default/DepthPosOnlyNoPixelPipeline/FCesiumPointAttenuationVertexFactory/TDepthOnlyVS(true)/0”
C:/Program Files/Epic Games/UE_5.1/Engine/Shaders/Private/PositionOnlyDepthVertexShader.usf(23,57): Shader TDepthOnlyVS, Permutation 0, VF FCesiumPointAttenuationVertexFactory:
/Engine/Private/PositionOnlyDepthVertexShader.usf(23,57): error: no member named ‘InstanceId’ in ‘FPositionOnlyVertexFactoryInput’
const uint EyeIndex = (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) ;
~~~~~ ^

[2023.06.08-19.35.43:486][ 0]LogShaderCompilers: Warning: C:/Program Files/Epic Games/UE_5.1/Engine/Shaders/Private/PositionOnlyDepthVertexShader.usf(26,64): Shader TDepthOnlyVS, Permutation 0, VF FCesiumPointAttenuationVertexFactory:
/Engine/Private/PositionOnlyDepthVertexShader.usf(26,64): error: no member named ‘InstanceId’ in ‘FPositionOnlyVertexFactoryInput’
ResolvedView = (ResolveView( (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) )) ;
~~~~~ ^

[2023.06.08-19.35.43:486][ 0]LogShaderCompilers: Warning: C:/Program Files/Epic Games/UE_5.1/Engine/Shaders/Private/PositionOnlyDepthVertexShader.usf(): Shader TDepthOnlyVS, Permutation 0, VF FCesiumPointAttenuationVertexFactory:
D3DCompileToDxil failed. Error code: Erreur non spécifiée (0x80004005).

[2023.06.08-19.35.43:486][ 0]LogWindows: Error: appError called: Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 4668]
/Engine/Private/PositionOnlyDepthVertexShader.usf:23:57: error: no member named ‘InstanceId’ in ‘FPositionOnlyVertexFactoryInput’
const uint EyeIndex = (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) ;
~~~~~ ^
/Engine/Private/PositionOnlyDepthVertexShader.usf:26:64: error: no member named ‘InstanceId’ in ‘FPositionOnlyVertexFactoryInput’
ResolvedView = (ResolveView( (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) )) ;
~~~~~ ^
D3DCompileToDxil failed. Error code: Erreur non spécifiée (0x80004005).
Failed to compile default material /Engine/EngineMaterials/WorldGridMaterial.WorldGridMaterial!

2

I responded to this here:

3

Have the same problem here. You have to enable “Instanced Stereo” to reproduce the issue.

4

Ok, thanks. I can reproduce this in UE 5.1.1 and Cesium for Unreal v1.27.0 with “Instanced Stereo” enabled. We will investigate.

5

Thanks for the reply!
UE 5.2 and Cesium for Unreal v1.27.0 have the same problem.

6

Hi all,

Just to update: a fix for this was included in the Cesium for Unreal v1.27.1 release. We have submitted the new release to the Unreal Marketplace and are waiting on them to publish.