emissive.h

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/* 
 * Adapted from Open Shading Language with this license: 
 * 
 * Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al. 
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 * Modifications Copyright 2011, Blender Foundation. 
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CCL_NAMESPACE_BEGIN

/* EMISSION CLOSURE */

__device float3 emissive_eval(const float3 Ng, const float3 I)
{
    float cosNO = fabsf(dot(Ng, I));
    float res = (cosNO > 0.0f)? 1.0f: 0.0f;
    
    return make_float3(res, res, res);
}

__device float emissive_pdf(const float3 Ng, const float3 I)
{
    float cosNO = fabsf(dot(Ng, I));
    return (cosNO > 0.0f)? 1.0f: 0.0f;
}

__device float3 svm_emissive_eval(ShaderData *sd, ShaderClosure *sc)
{
    return emissive_eval(sd->Ng, sd->I);
}

CCL_NAMESPACE_END