A licensee reported that two SkyAtmosphere texture resources do not have proper memory transitions added by the RDG. This happens because in VolumetricCloud.usf, these textures are referenced via View.CameraAerialPerspectiveVolumeMieOnly/RayOnly and declared in FViewUniformShaderParameters as SHADER_TEXTURE_PARAMETERS instead of SHADER_PARAMETER_RDG_TEXTURES. Running a project containg a SkyAtmosphere component with -gpuvalidation will surface the following D3D12 validation layer errors:
LogD3D12RHI: Error: [D3DDebug] [ID: 1358] GPU-BASED VALIDATION: Dispatch, Incompatible texture barrier layout: Resource: 0x0000025EA744B400:'SkyAtmosphere.CameraAPVolumeMieOnly0', Subresource Index: [0], Descriptor heap index to DescriptorTableStart: [452545], Descriptor heap index FromTableStart: [2], Binding Type In Descriptor: SRV, Layout: D3D12_BARRIER_LAYOUT_UNORDERED_ACCESS(0x3), Index of Descriptor Range: 0, Shader Stage: COMPUTE, ...
LogD3D12RHI: Error: [D3DDebug] [ID: 1358] GPU-BASED VALIDATION: Dispatch, Incompatible texture barrier layout: Resource: 0x0000025EA744A770:'SkyAtmosphere.CameraAPVolumeRayOnly0', Subresource Index: [0], Descriptor heap index to DescriptorTableStart: [452545], Descriptor heap index FromTableStart: [3], Binding Type In Descriptor: SRV, Layout: D3D12_BARRIER_LAYOUT_UNORDERED_ACCESS(0x3), Index of Descriptor Range: 0, Shader Stage: COMPUTE, ...
Steps to Reproduce
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-387438 in the post.
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| Component | UE - Rendering - RHI |
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| Affects Versions | 5.6, 5.8 |
| Fix Commit | 55952521 |
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| Created | Jul 20, 2026 |
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| Resolved | Jul 20, 2026 |
| Updated | Jul 28, 2026 |