It seems to be caused by the following patch https://codereview.qt-project.org/c/qt/qtquick3d/+/674864

I have modified the principledmaterial example and added SSGI and I get the following assertion failure:

QSpirvCompiler: Failed to parse shader
Failed to compile fragment shader: ERROR: :105: 'qt_tangent' : undeclared identifier
ERROR: :105: '' : compilation terminated
ERROR: 2 compilation errors. No code generated.

"mesh default material pipeline-- ;hasLighting=true;hasIbl=true;specularEnabled=true;fresnelEnabled=true;vertexColorsEnabled=true;vertexColorRedMask=0;vertexColorGreenMask=0;vertexColorBlueMask=0;vertexColorAlphaMask=0;specularModel=SchlickGGX;diffuseModel=Burley;diffuseMap=

Unknown macro: {;;;;;}

;emissiveMap=

;specularMap=

Unknown macro: {;;;;;}

;baseColorMap=

Unknown macro: {enabled=true;;;identity=true;;}

;bumpMap=

;specularAmountMap=

Unknown macro: {;;;;;}

;normalMap=

;clearcoatNormalMap=

Unknown macro: {;;;;;}

;opacityMap=

;roughnessMap=

Unknown macro: {;;;;;}

;metalnessMap=

;occlusionMap=

Unknown macro: {;;;;;}

;translucencyMap=

;heightMap=

Unknown macro: {;;;;;}

;clearcoatMap=

;clearcoatRoughnessMap=

Unknown macro: {enabled=true;;;identity=true;;}

;transmissionMap=

Unknown macro: {;;;;;}

;thicknessMap=

;opacityMap_channel=R;roughnessMap_channel=R;metalnessMap_channel=R;occlusionMap_channel=R;translucencyMap_channel=R;heightMap_channel=R;clearcoatMap_channel=R;clearcoatRoughnessMap_channel=R;transmissionMap_channel=R;thicknessMap_channel=R;baseColorMap_channel=R;specularAmountMap_channel=R;emissiveMap_channel=R;boneCount=0;isDoubleSided=true;alphaMode=Opaque;vertexAttributes=

Unknown macro: {position=true;normal=true;texcoord0=true;;;;;;}

;targetCount=0;targetPositionOffset=255;targetNormalOffset=255;targetTangentOffset=255;targetBinormalOffset=255;targetTexCoord0Offset=255;targetTexCoord1Offset=255;targetColorOffset=255;metallicRoughnessEnabled=true;debugMode=0;viewCount=1;orderIndependentTransparency=0;shadowSoftness=Hard"

/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/15.2.1/../../../../include/c++/15.2.1/bits/shared_ptr_base.h:1344: Tp *std::shared_ptr_deref(_Tp *) [_Tp = QSSGRhiShaderPipeline]: Assertion '_p != nullptr' failed.