导入模型后正常渲染了不到一秒贴图就没了

[News111-dev]

[Ryanshuai]

我也遇到这个问题了。

[yyyykf]

老哥解决了吗

[kkcat51]

同遇到，这个是什么问题啊

[MilkFeng]

同

[Caleb196x]

可以把日志文件贴出来看下

[Ryanshuai]

LogXverseGS: Warning: bTextureChanged, UpdateNiagaraTextureRefs
LogNiagara: Compiling System NiagaraSystem /XV3dGS/YX3dGS.YX3dGS took 0.899887 sec (time since issued), 0.768034 sec (combined shader worker time).
LogShaderCompilers: Warning: Failed to compile Material /XV3dGS/M_GS_unlit.M_GS_unlit for platform PCD3D_SM6, Default Material will be used in game.
  Shader debug info dumped to: "C:\Users\xxx\Documents\Unreal Projects\MyProject3\Saved\ShaderDebugInfo\PCD3D_SM6\M_GS_unlit_eafdb3d5c35ad6d2\Default\FNiagaraSpriteVertexFactory\TMaterialCHSFNoLightMapPolicyFAnyHitShader\0"
C:\Program Files\Epic Games\UE_5.5\Engine\Shaders\Private\RayTracing\RayTracingMaterialHitShaders.usf(0): Shader TMaterialCHSFNoLightMapPolicyFAnyHitShader, Permutation 0, VF FNiagaraSpriteVertexFactory:
    error: validation errors
  C:\Program Files\Epic Games\UE_5.5\Engine\Binaries\Win64\RayTracingMaterialHitShaders.dxil(3932,5): Shader TMaterialCHSFNoLightMapPolicyFAnyHitShader, Permutation 0, VF FNiagaraSpriteVertexFactory:
    RayTracingMaterialHitShaders.dxil:3932:5: error: Opcode Discard not valid in shader model lib_6_6(closesthit).
  C:\Program Files\Epic Games\UE_5.5\Engine\Binaries\Win64\RayTracingMaterialHitShaders.dxil(3929,5): Shader TMaterialCHSFNoLightMapPolicyFAnyHitShader, Permutation 0, VF FNiagaraSpriteVertexFactory:
    RayTracingMaterialHitShaders.dxil:3929:5: error: Opcode Discard not valid in shader model lib_6_6(closesthit).
  C:\Program Files\Epic Games\UE_5.5\Engine\Shaders\Private\RayTracing\RayTracingMaterialHitShaders.usf(0): Shader TMaterialCHSFNoLightMapPolicyFAnyHitShader, Permutation 0, VF FNiagaraSpriteVertexFactory:
    RayTracingMaterialHitShaders.dxil:5157: error: Entry function performs some operation that is incompatible with the shader stage or other entry properties.  See other errors for details.
  C:\Program Files\Epic Games\UE_5.5\Engine\Shaders\Private\RayTracing\RayTracingMaterialHitShaders.usf(0): Shader TMaterialCHSFNoLightMapPolicyFAnyHitShader, Permutation 0, VF FNiagaraSpriteVertexFactory:
    RayTracingMaterialHitShaders.dxil:5157: error: Function uses features incompatible with the shader stage (closesthit) of the entry function.
LogShaderCompilers: Display: ================================================
LogShaderCompilers: Display: === FShaderJobCache stats ===
LogShaderCompilers: Display: Total job queries 141, among them cache hits 13 (9.22%), DDC hits 118 (83.69%), Duplicates 2 (1.42%)
LogShaderCompilers: Display: Tracking 125 distinct input hashes that result in 122 distinct outputs (97.60%)
LogShaderCompilers: Display: RAM used: 112.43 KiB of 4.00 GiB budget. Usage: 0.00%
LogShaderCompilers: Display: === Shader Compilation stats ===
LogShaderCompilers: Display: Shaders Compiled: 8
LogShaderCompilers: Display: Jobs assigned 8, completed 8 (100%)
LogShaderCompilers: Display: Average time worker was idle: 0.67 s
LogShaderCompilers: Display: Time job spent in pending queue: average 0.07 s, longest 0.10 s
LogShaderCompilers: Display: Job execution time: average 0.93 s, max 1.56 s
LogShaderCompilers: Display: Job life time (pending + execution): average 1.00 s, max 1.61
LogShaderCompilers: Display: Shader code size: average 11.477 KiB, min 4.898 KiB, max 18.168 KiB
LogShaderCompilers: Display: Time at least one job was in flight (either pending or executed): 3.24 s
LogShaderCompilers: Display: Mutex wait stall in FShaderJobCache::SubmitJobs:  0.18%
LogShaderCompilers: Display: Jobs were issued in 8 batches (only local compilation was used), average 1.00 jobs/batch
LogShaderCompilers: Display: Average processing rate: 2.47 jobs/sec
LogShaderCompilers: Display: Total thread time: 3.631 s
LogShaderCompilers: Display: Total thread preprocess time: 3.061 s
LogShaderCompilers: Display: Percentage time preprocessing: 84.29%
LogShaderCompilers: Display: Effective parallelization: 1.12 (times faster than compiling all shaders on one thread). Compare with number of workers: 12
LogShaderCompilers: Display: Top 5 most expensive shader types by average time:
LogShaderCompilers: Display:                   TMaterialCHSFNoLightMapPolicyFAnyHitShader (compiled    2 times, average 0.78 sec, max 0.88 sec, min 0.68 sec)
LogShaderCompilers: Display:                                 TBasePassVSFNoLightMapPolicy (compiled    1 times, average 0.52 sec, max 0.52 sec, min 0.52 sec)
LogShaderCompilers: Display:                        FRayTracingDynamicGeometryConverterCS (compiled    1 times, average 0.43 sec, max 0.43 sec, min 0.43 sec)
LogShaderCompilers: Display:                                                  FHitProxyVS (compiled    1 times, average 0.40 sec, max 0.40 sec, min 0.40 sec)
LogShaderCompilers: Display:                                 TBasePassPSFNoLightMapPolicy (compiled    1 times, average 0.36 sec, max 0.36 sec, min 0.36 sec)
LogShaderCompilers: Display: Top 5 shader types by total compile time:
LogShaderCompilers: Display:                   TMaterialCHSFNoLightMapPolicyFAnyHitShader - 43.08% of total time (compiled    2 times, average 0.78 sec, max 0.88 sec, min 0.68 sec)
LogShaderCompilers: Display:                                 TBasePassVSFNoLightMapPolicy - 14.30% of total time (compiled    1 times, average 0.52 sec, max 0.52 sec, min 0.52 sec)
LogShaderCompilers: Display:                        FRayTracingDynamicGeometryConverterCS - 11.80% of total time (compiled    1 times, average 0.43 sec, max 0.43 sec, min 0.43 sec)
LogShaderCompilers: Display:                                                  FHitProxyVS - 10.91% of total time (compiled    1 times, average 0.40 sec, max 0.40 sec, min 0.40 sec)
LogShaderCompilers: Display:                                 TBasePassPSFNoLightMapPolicy - 9.98% of total time (compiled    1 times, average 0.36 sec, max 0.36 sec, min 0.36 sec)
LogShaderCompilers: Display: === Material stats ===
LogShaderCompilers: Display: Materials Cooked:        0
LogShaderCompilers: Display: Materials Translated:    128
LogShaderCompilers: Display: Material Total Translate Time: 0.07 s
LogShaderCompilers: Display: Material Translation Only: 0.03 s (41%)
LogShaderCompilers: Display: Material DDC Serialization Only: 0.00 s (2%)
LogShaderCompilers: Display: Material Cache Hits: 17 (13%)
LogShaderCompilers: Display: ================================================
LogEOSSDK: LogEOS: Updating Product SDK Config, Time: 317.704651
LogEOSSDK: LogEOS: SDK Config Product Update Request Completed - No Change
LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 318.371368, Update Interval: 325.192413
LogSlate: Took 0.001827 seconds to synchronously load lazily loaded font '../../../Engine/Content/Slate/Fonts/DroidSansFallback.ttf' (3848K)

[Ryanshuai]

从 SM6 改成 SM5 好了，View Mode 要改成 Unlit