Cannot find custon mesh material shader in shader map except opaque and not two sided

I implemented custom render pass and shaders. When I enter material editor and setting blend mode to masked or checking two sided crashes engine.



LogMaterial: Display: Missing cached shader map for material NewMaterial1, compiling.
LogShaders: Display: Compiling NewMaterial1: Platform=PCD3D_SM5, Usage=LightingModel=MSM_DefaultLit, BlendMode=BLEND_Masked, SpecialEngine=0, TwoSided=0, TSNormal=1, Masked=1, Distorted=0, WritesEveryPixel=0, ModifiesMeshPosition=0, Usage={}
...
LogMaterial: Error: Couldn't find Shader (FEdgeBaseVS, 0) for Material Resource NewMaterial1!
RenderMeshShaderMap 1, RenderThreadShaderMap 1
GameMeshShaderMap 1, GameThreadShaderMap 1, bShaderWasFoundInGameShaderMap 0
With VF=FLocalVertexFactory, Platform=PCD3D_SM5
ShouldCache: Mat=0, VF=1, Shader=1
MaterialUsageDesc: LightingModel=MSM_DefaultLit, BlendMode=BLEND_Masked, SpecialEngine=0, TwoSided=0, TSNormal=1, Masked=1, Distorted=0, WritesEveryPixel=0, ModifiesMeshPosition=0, Usage={}


But the weird part is, ShouldCompilePermutation() of my mesh material shader compiles for special engine, masked, modifying mesh position, two sided, opaque or masked materials.



static bool ShouldCompilePermutation(const FMeshMaterialShaderPermutationParameters& Parameters)
{
    return Parameters.MaterialParameters.bIsSpecialEngineMaterial
      || !IsTranslucentBlendMode(Parameters.MaterialParameters.BlendMode)
      || !Parameters.MaterialParameters.bWritesEveryPixel
      || Parameters.MaterialParameters.bIsTwoSided
      || Parameters.MaterialParameters.bMaterialMayModifyMeshPosition;
}


How can I fix this?

Hi, Do you solve the problem? I met similar problem.