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#jira ue-88715 #rb kevin.ortegren #ROBOMERGE-SOURCE: CL 12674805 in //UE4/Release-4.25/... via CL 12674808 via CL 12674815 #ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v675-12543919) [CL 12674820 by john hable in Main branch]
44 lines
2.4 KiB
Plaintext
44 lines
2.4 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================================
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SubsurfaceProfileCommon.ush: Subsurface scattering parameter lookup / decoding constants.
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=============================================================================================*/
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#pragma once
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// NOTE: Changing offsets below requires updating all instances of #SSSS_CONSTANTS
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// TODO: This needs to be defined in a single place and shared between C++ and shaders!
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#define SSSS_SUBSURFACE_COLOR_OFFSET 0
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#define BSSS_SURFACEALBEDO_OFFSET (SSSS_SUBSURFACE_COLOR_OFFSET+1)
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#define BSSS_DMFP_OFFSET (BSSS_SURFACEALBEDO_OFFSET+1)
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#define SSSS_TRANSMISSION_OFFSET (BSSS_DMFP_OFFSET+1)
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#define SSSS_BOUNDARY_COLOR_BLEED_OFFSET (SSSS_TRANSMISSION_OFFSET+1)
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#define SSSS_DUAL_SPECULAR_OFFSET (SSSS_BOUNDARY_COLOR_BLEED_OFFSET+1)
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#define SSSS_KERNEL0_OFFSET (SSSS_DUAL_SPECULAR_OFFSET+1)
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#define SSSS_KERNEL0_SIZE 13
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#define SSSS_KERNEL1_OFFSET (SSSS_KERNEL0_OFFSET + SSSS_KERNEL0_SIZE)
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#define SSSS_KERNEL1_SIZE 9
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#define SSSS_KERNEL2_OFFSET (SSSS_KERNEL1_OFFSET + SSSS_KERNEL1_SIZE)
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#define SSSS_KERNEL2_SIZE 6
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#define SSSS_KERNEL_TOTAL_SIZE (SSSS_KERNEL0_SIZE + SSSS_KERNEL1_SIZE + SSSS_KERNEL2_SIZE)
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#define SSSS_TRANSMISSION_PROFILE_OFFSET (SSSS_KERNEL0_OFFSET + SSSS_KERNEL_TOTAL_SIZE)
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#define SSSS_TRANSMISSION_PROFILE_SIZE 32
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#define BSSS_TRANSMISSION_PROFILE_OFFSET (SSSS_TRANSMISSION_PROFILE_OFFSET + SSSS_TRANSMISSION_PROFILE_SIZE)
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#define BSSS_TRANSMISSION_PROFILE_SIZE SSSS_TRANSMISSION_PROFILE_SIZE
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#define SSSS_MAX_TRANSMISSION_PROFILE_DISTANCE 5.0f // See MaxTransmissionProfileDistance in ComputeTransmissionProfile(), SeparableSSS.cpp
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#define SSSS_MAX_DUAL_SPECULAR_ROUGHNESS 2.0f
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// Threshold value at which model switches from SSS to default lit
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#define SSSS_OPACITY_THRESHOLD_EPS 0.10
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// One profile per line, encoded using constants above. See FSubsurfaceProfileTexture::CreateTexture() in SubsurfaceProfile.cpp.
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// By default, SSProfilesTexture is "Texture2D SSProfilesTexture", but it can be remapped as in BasePassCommon.usf.
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#ifndef SSProfilesTexture
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Texture2D SSProfilesTexture;
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#endif
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// Rename to allow the base pass to intercept with a value from its pass uniform buffer
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#ifndef ActualSSProfilesTexture
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#define ActualSSProfilesTexture SSProfilesTexture
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#endif
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