void InitializeSubsurfaceScattering()
{
// Disney SSS (compute + combine)
string kernelName = "SubsurfaceScattering";
m_SubsurfaceScatteringCS = defaultResources.shaders.subsurfaceScatteringCS;
m_SubsurfaceScatteringKernel = m_SubsurfaceScatteringCS.FindKernel(kernelName);
m_CombineLightingPass = CoreUtils.CreateEngineMaterial(defaultResources.shaders.combineLightingPS);
m_CombineLightingPass.SetInt(HDShaderIDs._StencilRef, (int)StencilUsage.SubsurfaceScattering);
m_CombineLightingPass.SetInt(HDShaderIDs._StencilMask, (int)StencilUsage.SubsurfaceScattering);
m_SSSCopyStencilForSplitLighting = CoreUtils.CreateEngineMaterial(defaultResources.shaders.copyStencilBufferPS);
m_SSSCopyStencilForSplitLighting.SetInt(HDShaderIDs._StencilRef, (int)StencilUsage.SubsurfaceScattering);
m_SSSCopyStencilForSplitLighting.SetInt(HDShaderIDs._StencilMask, (int)StencilUsage.SubsurfaceScattering);
m_SSSDefaultDiffusionProfile = defaultResources.assets.defaultDiffusionProfile;
// fill the list with the max number of diffusion profile so we dont have
// the error: exceeds previous array size (5 vs 3). Cap to previous size.
m_SSSShapeParamsAndMaxScatterDists = new Vector4[DiffusionProfileConstants.DIFFUSION_PROFILE_COUNT];
m_SSSTransmissionTintsAndFresnel0 = new Vector4[DiffusionProfileConstants.DIFFUSION_PROFILE_COUNT];
m_SSSDisabledTransmissionTintsAndFresnel0 = new Vector4[DiffusionProfileConstants.DIFFUSION_PROFILE_COUNT];
m_SSSWorldScalesAndFilterRadiiAndThicknessRemaps = new Vector4[DiffusionProfileConstants.DIFFUSION_PROFILE_COUNT];
m_SSSDiffusionProfileHashes = new uint[DiffusionProfileConstants.DIFFUSION_PROFILE_COUNT];
m_SSSDiffusionProfileUpdate = new int[DiffusionProfileConstants.DIFFUSION_PROFILE_COUNT];
m_SSSSetDiffusionProfiles = new DiffusionProfileSettings[DiffusionProfileConstants.DIFFUSION_PROFILE_COUNT];
// If ray tracing is supported by the asset, do the initialization
if (rayTracingSupported)
{
InitializeSubsurfaceScatteringRT();
}
}
void SetDiffusionProfileAtIndex(DiffusionProfileSettings settings, int index)
{
// if the diffusion profile was already set and it haven't changed then there is nothing to upgrade
if (m_SSSSetDiffusionProfiles[index] == settings && m_SSSDiffusionProfileUpdate[index] == settings.updateCount)
{
return;
}
// if the settings have not yet been initialized
if (settings.profile.hash == 0)
{
return;
}
m_SSSShapeParamsAndMaxScatterDists[index] = settings.shapeParamAndMaxScatterDist;
m_SSSTransmissionTintsAndFresnel0[index] = settings.transmissionTintAndFresnel0;
m_SSSDisabledTransmissionTintsAndFresnel0[index] = settings.disabledTransmissionTintAndFresnel0;
m_SSSWorldScalesAndFilterRadiiAndThicknessRemaps[index] = settings.worldScaleAndFilterRadiusAndThicknessRemap;
m_SSSDiffusionProfileHashes[index] = settings.profile.hash;
// Erase previous value (This need to be done here individually as in the SSS editor we edit individual component)
uint mask = 1u << index;
m_SSSTexturingModeFlags &= ~mask;
m_SSSTransmissionFlags &= ~mask;
m_SSSTexturingModeFlags |= (uint)settings.profile.texturingMode << index;
m_SSSTransmissionFlags |= (uint)settings.profile.transmissionMode << index;
m_SSSSetDiffusionProfiles[index] = settings;
m_SSSDiffusionProfileUpdate[index] = settings.updateCount;
}
void InitializeSubsurfaceScattering()
{
// Disney SSS (compute + combine)
string kernelName = "SubsurfaceScattering";
m_SubsurfaceScatteringCS = defaultResources.shaders.subsurfaceScatteringCS;
m_SubsurfaceScatteringKernel = m_SubsurfaceScatteringCS.FindKernel(kernelName);
m_CombineLightingPass = CoreUtils.CreateEngineMaterial(defaultResources.shaders.combineLightingPS);
m_CombineLightingPass.SetInt(HDShaderIDs._StencilRef, (int)StencilUsage.SubsurfaceScattering);
m_CombineLightingPass.SetInt(HDShaderIDs._StencilMask, (int)StencilUsage.SubsurfaceScattering);
m_SSSCopyStencilForSplitLighting = CoreUtils.CreateEngineMaterial(defaultResources.shaders.copyStencilBufferPS);
m_SSSCopyStencilForSplitLighting.SetInt(HDShaderIDs._StencilRef, (int)StencilUsage.SubsurfaceScattering);
m_SSSCopyStencilForSplitLighting.SetInt(HDShaderIDs._StencilMask, (int)StencilUsage.SubsurfaceScattering);
m_SSSDefaultDiffusionProfile = defaultResources.assets.defaultDiffusionProfile;
}
void InitializeSubsurfaceScattering()
{
// Disney SSS (compute + combine)
string kernelName = asset.currentPlatformRenderPipelineSettings.increaseSssSampleCount ? "SubsurfaceScatteringHQ" : "SubsurfaceScatteringMQ";
string kernelNameMSAA = asset.currentPlatformRenderPipelineSettings.increaseSssSampleCount ? "SubsurfaceScatteringHQ_MSAA" : "SubsurfaceScatteringMQ_MSAA";
m_SubsurfaceScatteringCS = defaultResources.shaders.subsurfaceScatteringCS;
m_SubsurfaceScatteringKernel = m_SubsurfaceScatteringCS.FindKernel(kernelName);
m_SubsurfaceScatteringKernelMSAA = m_SubsurfaceScatteringCS.FindKernel(kernelNameMSAA);
m_CombineLightingPass = CoreUtils.CreateEngineMaterial(defaultResources.shaders.combineLightingPS);
m_CombineLightingPass.SetInt(HDShaderIDs._StencilMask, (int)HDRenderPipeline.StencilBitMask.LightingMask);
m_SSSCopyStencilForSplitLighting = CoreUtils.CreateEngineMaterial(defaultResources.shaders.copyStencilBufferPS);
m_SSSCopyStencilForSplitLighting.SetInt(HDShaderIDs._StencilRef, (int)StencilLightingUsage.SplitLighting);
m_SSSCopyStencilForSplitLighting.SetInt(HDShaderIDs._StencilMask, (int)HDRenderPipeline.StencilBitMask.LightingMask);
m_SSSDefaultDiffusionProfile = defaultResources.assets.defaultDiffusionProfile;
}
void SetDiffusionProfileAtIndex(DiffusionProfileSettings settings, int index)
{
// if the diffusion profile was already set and it haven't changed then there is nothing to upgrade
if (m_SSSSetDiffusionProfiles[index] == settings && m_SSSDiffusionProfileUpdate[index] == settings.updateCount)
{
return;
}
// if the settings have not yet been initialized
if (settings.profile.filterKernelNearField == null)
{
return;
}
m_SSSThicknessRemaps[index] = settings.thicknessRemaps;
m_SSSShapeParams[index] = settings.shapeParams;
m_SSSTransmissionTintsAndFresnel0[index] = settings.transmissionTintsAndFresnel0;
m_SSSDisabledTransmissionTintsAndFresnel0[index] = settings.disabledTransmissionTintsAndFresnel0;
m_SSSWorldScales[index] = settings.worldScales;
for (int j = 0, n = DiffusionProfileConstants.SSS_N_SAMPLES_NEAR_FIELD; j < n; j++)
{
m_SSSFilterKernels[n * index + j].x = settings.profile.filterKernelNearField[j].x;
m_SSSFilterKernels[n * index + j].y = settings.profile.filterKernelNearField[j].y;
if (j < DiffusionProfileConstants.SSS_N_SAMPLES_FAR_FIELD)
{
m_SSSFilterKernels[n * index + j].z = settings.profile.filterKernelFarField[j].x;
m_SSSFilterKernels[n * index + j].w = settings.profile.filterKernelFarField[j].y;
}
}
m_SSSDiffusionProfileHashes[index] = HDShadowUtils.Asfloat(settings.profile.hash);
// Erase previous value (This need to be done here individually as in the SSS editor we edit individual component)
uint mask = 1u << index;
m_SSSTexturingModeFlags &= ~mask;
m_SSSTransmissionFlags &= ~mask;
m_SSSTexturingModeFlags |= (uint)settings.profile.texturingMode << index;
m_SSSTransmissionFlags |= (uint)settings.profile.transmissionMode << index;
m_SSSSetDiffusionProfiles[index] = settings;
m_SSSDiffusionProfileUpdate[index] = settings.updateCount;
}
