UNiagaraDataInterfaceBase::BuildShaderParameters

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API > API/Plugins > API/Plugins/NiagaraCore > API/Plugins/NiagaraCore/UNiagaraDataInterfaceBase

Description

Override this method to provide parameters to the GPU (SRV / UAV / Constants / etc) The most common usage will be to provide a single structure which is nested with other parameters. The structure would be declared like this BEGIN_SHADER_PARAMETER_STRUCT(FMyShaderParameters, ) SHADER_PARAMETER(float, MyValue) SHADER_PARAMETER_SRV(Buffer, MySRV) END_SHADER_PARAMETER_STRUCT()

And inside the override BuildShaderParameters you would simple add the structure ShaderParametersBuilder.AddNestedStruct();

You should also ensure that AppendCompileHash includes the parameters like this InVisitor->UpdateShaderParameters();

When filling the data inside the set function you would ask for parameters using the same structure. Note: This function is only called on the CDO only not the instance

virtual void BuildShaderParameters  
(  
    FNiagaraShaderParametersBuilder & ShaderParametersBuilder  
) const  
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virtual void BuildShaderParameters (     FNiagaraShaderParametersBuilder & ShaderParametersBuilder ) const