void SetPreconvolvedAmbientLightProbe(CommandBuffer cmd, float dimmer, float anisotropy)
{
SphericalHarmonicsL2 probeSH = SphericalHarmonicMath.UndoCosineRescaling(RenderSettings.ambientProbe);
probeSH = SphericalHarmonicMath.RescaleCoefficients(probeSH, dimmer);
ZonalHarmonicsL2.GetCornetteShanksPhaseFunction(m_PhaseZH, anisotropy);
SphericalHarmonicsL2 finalSH = SphericalHarmonicMath.PremultiplyCoefficients(SphericalHarmonicMath.Convolve(probeSH, m_PhaseZH));
SphericalHarmonicMath.PackCoefficients(m_PackedCoeffs, finalSH);
cmd.SetGlobalVectorArray(HDShaderIDs._AmbientProbeCoeffs, m_PackedCoeffs);
}
// Function that fills the buffer with the ambient probe values
unsafe void SetPreconvolvedAmbientLightProbe(ref ShaderVariablesClouds cb, HDCamera hdCamera, VolumetricClouds settings)
{
SphericalHarmonicsL2 probeSH = SphericalHarmonicMath.UndoCosineRescaling(m_SkyManager.GetAmbientProbe(hdCamera));
probeSH = SphericalHarmonicMath.RescaleCoefficients(probeSH, settings.ambientLightProbeDimmer.value);
ZonalHarmonicsL2.GetCornetteShanksPhaseFunction(m_PhaseZHClouds, 0.0f);
SphericalHarmonicsL2 finalSH = SphericalHarmonicMath.PremultiplyCoefficients(SphericalHarmonicMath.Convolve(probeSH, m_PhaseZHClouds));
SphericalHarmonicMath.PackCoefficients(m_PackedCoeffsClouds, finalSH);
for (int i = 0; i < 7; i++)
{
for (int j = 0; j < 4; ++j)
{
cb._AmbientProbeCoeffs[i * 4 + j] = m_PackedCoeffsClouds[i][j];
}
}
}