71 lines
3.2 KiB
C#
71 lines
3.2 KiB
C#
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace UnityEngine.Rendering.HighDefinition
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{
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[GenerateHLSL]
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internal enum StencilUsage
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{
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Clear = 0,
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// Note: first bit is free and can still be used by both phases.
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// --- Following bits are used before transparent rendering ---
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IsUnlit = (1 << 0), // Unlit materials (shader and shader graph) except for the shadow matte
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RequiresDeferredLighting = (1 << 1),
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SubsurfaceScattering = (1 << 2), // SSS, Split Lighting
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TraceReflectionRay = (1 << 3), // SSR or RTR - slot is reuse in transparent
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Decals = (1 << 4), // Use to tag when an Opaque Decal is render into DBuffer
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ObjectMotionVector = (1 << 5), // Animated object (for motion blur, SSR, SSAO, TAA)
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// --- Stencil is cleared after opaque rendering has finished ---
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// --- Following bits are used exclusively for what happens after opaque ---
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WaterExclusion = (1 << 0), // Prevents water surface from being rendered.
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ExcludeFromTUAndAA = (1 << 1), // Disable Temporal Upscaling and Antialiasing for certain objects
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DistortionVectors = (1 << 2), // Distortion pass - reset after distortion pass, shared with SMAA
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SMAA = (1 << 2), // Subpixel Morphological Antialiasing
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// Reserved TraceReflectionRay = (1 << 3) for transparent SSR or RTR
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Refractive = (1 << 4), // Indicates there's a refractive object
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WaterSurface = (1 << 5), // Reserved for water surface usage (If update the value of 'STENCILUSAGE_WATER_SURFACE' in LensFlareCommon.hlsl)
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// --- Following are user bits, we don't touch them inside HDRP and is up to the user to handle them ---
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UserBit0 = (1 << 6),
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UserBit1 = (1 << 7),
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HDRPReservedBits = 255 & ~(UserBit0 | UserBit1),
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}
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/// <summary>
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/// Stencil bit exposed to user and not reserved by HDRP.
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/// Note that it is important that the Write Mask used in conjunction with these bits includes only this bits.
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/// For example if you want to tag UserBit0, the shaderlab code for the stencil state setup would look like:
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///
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/// WriteMask 64 // Value of UserBit0
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/// Ref 64 // Value of UserBit0
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/// Comp Always
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/// Pass Replace
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///
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/// Or if for example you want to write UserBit0 and zero out the UserBit1, the shaderlab code for the stencil state setup would look like:
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///
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/// WriteMask MyWriteMask // with MyWriteMask define in C# as MyWriteMask = (UserStencilUsage.UserBit0 | UserStencilUsage.UserBit1)
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/// Ref MyRef // with MyRef define in C# as MyRef = UserStencilUsage.UserBit0
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/// Comp Always
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/// Pass Replace
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/// </summary>
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[Flags]
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public enum UserStencilUsage
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{
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/// <summary>All stencil bits disabled.</summary>
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None = 0,
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/// <summary>User stencil bit 0.</summary>
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UserBit0 = StencilUsage.UserBit0,
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/// <summary>User stencil bit 1.</summary>
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UserBit1 = StencilUsage.UserBit1,
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/// <summary>The mask of all the user bits.</summary>
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AllUserBits = UserBit0 | UserBit1,
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}
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}
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