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I have a world material here. It uses a few textures, lots of material blending. It was working fine in 4.7 but after upgrading to 4.8 I get:
Engine/Shaders/MaterialTemplate.usf(1717,2): Shader FEvaluateSurfelMaterialCS, VF None:
warning X3206: implicit truncation of vector type
Engine/Shaders/MaterialTemplate.usf(1776,2): Shader FEvaluateSurfelMaterialCS, VF None:
warning X3206: implicit truncation of vector type
Engine/Shaders/MaterialTemplate.usf(1842,2): Shader FEvaluateSurfelMaterialCS, VF None:
warning X3206: implicit truncation of vector type
Engine/Shaders/MaterialTemplate.usf(1967,2): Shader FEvaluateSurfelMaterialCS, VF None:
warning X3206: implicit truncation of vector type
Engine/Shaders/MaterialTemplate.usf(2079,2): Shader FEvaluateSurfelMaterialCS, VF None:
warning X3206: implicit truncation of vector type
Engine/Shaders/MaterialTemplate.usf(2117,2): Shader FEvaluateSurfelMaterialCS, VF None:
warning X3206: implicit truncation of vector type
Engine/Shaders/MaterialTemplate.usf(1225,1): Shader FEvaluateSurfelMaterialCS, VF None:
error X4532: cannot map expression to cs_5_0 instruction set
How can I start tracking this down? I haven’t really been able to narrow down a specific node that’s causing it.