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289 行
11 KiB

Shader "HDRenderPipeline/TerrainLit"
{
Properties
{
[HideInInspector] [ToggleUI] _EnableHeightBlend("EnableHeightBlend", Float) = 0.0
_HeightTransition("Height Transition", Range(0, 1.0)) = 0.0
// TODO: support tri-planar?
// TODO: support more maps?
//[HideInInspector] _TexWorldScale0("Tiling", Float) = 1.0
//[HideInInspector] _TexWorldScale1("Tiling", Float) = 1.0
//[HideInInspector] _TexWorldScale2("Tiling", Float) = 1.0
//[HideInInspector] _TexWorldScale3("Tiling", Float) = 1.0
// Following are builtin properties
// Stencil state
[HideInInspector] _StencilRef("_StencilRef", Int) = 2 // StencilLightingUsage.RegularLighting
[HideInInspector] _StencilWriteMask("_StencilWriteMask", Int) = 7 // StencilMask.Lighting (fixed at compile time)
[HideInInspector] _StencilRefMV("_StencilRefMV", Int) = 128 // StencilLightingUsage.RegularLighting (fixed at compile time)
[HideInInspector] _StencilWriteMaskMV("_StencilWriteMaskMV", Int) = 128 // StencilMask.ObjectsVelocity (fixed at compile time)
// Blending state
[HideInInspector] _ZWrite ("__zw", Float) = 1.0
[HideInInspector] _CullMode("__cullmode", Float) = 2.0
[HideInInspector] _ZTestDepthEqualForOpaque("_ZTestDepthEqualForOpaque", Int) = 4 // Less equal
[HideInInspector] _ZTestGBuffer("_ZTestGBuffer", Int) = 4
[ToggleUI] _EnableInstancedPerPixelNormal("Instanced per pixel normal", Float) = 1.0
// Caution: C# code in BaseLitUI.cs call LightmapEmissionFlagsProperty() which assume that there is an existing "_EmissionColor"
// value that exist to identify if the GI emission need to be enabled.
// In our case we don't use such a mechanism but need to keep the code quiet. We declare the value and always enable it.
// TODO: Fix the code in legacy unity so we can customize the behavior for GI
_EmissionColor("Color", Color) = (1, 1, 1)
// HACK: GI Baking system relies on some properties existing in the shader ("_MainTex", "_Cutoff" and "_Color") for opacity handling, so we need to store our version of those parameters in the hard-coded name the GI baking system recognizes.
_MainTex("Albedo", 2D) = "white" {}
_Color("Color", Color) = (1,1,1,1)
[ToggleUI] _SupportDecals("Support Decals", Float) = 1.0
}
HLSLINCLUDE
#pragma target 4.5
#pragma only_renderers d3d11 ps4 xboxone vulkan metal
#pragma shader_feature _TERRAIN_8_LAYERS
#pragma shader_feature _TERRAIN_BLEND_HEIGHT
#pragma shader_feature _NORMALMAP
#pragma shader_feature _MASKMAP
// Sample normal in pixel shader when doing instancing
#pragma shader_feature _TERRAIN_INSTANCED_PERPIXEL_NORMAL
//#pragma shader_feature _ _LAYER_MAPPING_PLANAR0 _LAYER_MAPPING_TRIPLANAR0
//#pragma shader_feature _ _LAYER_MAPPING_PLANAR1 _LAYER_MAPPING_TRIPLANAR1
//#pragma shader_feature _ _LAYER_MAPPING_PLANAR2 _LAYER_MAPPING_TRIPLANAR2
//#pragma shader_feature _ _LAYER_MAPPING_PLANAR3 _LAYER_MAPPING_TRIPLANAR3
#pragma shader_feature _DISABLE_DECALS
//enable GPU instancing support
#pragma multi_compile_instancing
#pragma instancing_options assumeuniformscaling nomatrices nolightprobe nolightmap
//-------------------------------------------------------------------------------------
// Define
//-------------------------------------------------------------------------------------
#define UNITY_MATERIAL_LIT // Need to be define before including Material.hlsl
#define SURFACE_GRADIENT
#define HAVE_MESH_MODIFICATION
//-------------------------------------------------------------------------------------
// Include
//-------------------------------------------------------------------------------------
#include "CoreRP/ShaderLibrary/Common.hlsl"
#include "../../ShaderPass/FragInputs.hlsl"
#include "../../ShaderPass/ShaderPass.cs.hlsl"
//-------------------------------------------------------------------------------------
// variable declaration
//-------------------------------------------------------------------------------------
// All our shaders use same name for entry point
#pragma vertex Vert
#pragma fragment Frag
ENDHLSL
SubShader
{
// This tags allow to use the shader replacement features
Tags
{
"RenderPipeline" = "HDRenderPipeline"
"RenderType" = "Opaque"
"SplatCount" = "8"
"MaskMapR" = "Metallic"
"MaskMapG" = "AO"
"MaskMapB" = "Height"
"MaskMapA" = "Smoothness"
"DiffuseA" = "Smoothness (becomes Density when Mask map is assigned)" // when MaskMap is disabled
"DiffuseA_MaskMapUsed" = "Density" // when MaskMap is enabled
}
// Caution: The outline selection in the editor use the vertex shader/hull/domain shader of the first pass declare. So it should not bethe meta pass.
Pass
{
Name "GBuffer" // Name is not used
Tags { "LightMode" = "GBuffer" } // This will be only for opaque object based on the RenderQueue index
Cull [_CullMode]
ZTest[_ZTestGBuffer]
Stencil
{
WriteMask [_StencilWriteMask]
Ref [_StencilRef]
Comp Always
Pass Replace
}
HLSLPROGRAM
#pragma multi_compile _ DEBUG_DISPLAY
#pragma multi_compile _ LIGHTMAP_ON
#pragma multi_compile _ DIRLIGHTMAP_COMBINED
#pragma multi_compile _ DYNAMICLIGHTMAP_ON
#pragma multi_compile _ SHADOWS_SHADOWMASK
// Setup DECALS_OFF so the shader stripper can remove variants
#pragma multi_compile DECALS_OFF DECALS_3RT DECALS_4RT
#pragma multi_compile _ LIGHT_LAYERS
#define SHADERPASS SHADERPASS_GBUFFER
#include "../../ShaderVariables.hlsl"
#ifdef DEBUG_DISPLAY
#include "../../Debug/DebugDisplay.hlsl"
#endif
#include "../../Material/Material.hlsl"
#include "TerrainLitSharePass.hlsl"
#include "TerrainLitData.hlsl"
#include "../../ShaderPass/ShaderPassGBuffer.hlsl"
ENDHLSL
}
// Extracts information for lightmapping, GI (emission, albedo, ...)
// This pass it not used during regular rendering.
Pass
{
Name "META"
Tags{ "LightMode" = "Meta" }
Cull Off
HLSLPROGRAM
// Lightmap memo
// DYNAMICLIGHTMAP_ON is used when we have an "enlighten lightmap" ie a lightmap updated at runtime by enlighten.This lightmap contain indirect lighting from realtime lights and realtime emissive material.Offline baked lighting(from baked material / light,
// both direct and indirect lighting) will hand up in the "regular" lightmap->LIGHTMAP_ON.
#define SHADERPASS SHADERPASS_LIGHT_TRANSPORT
#include "../../ShaderVariables.hlsl"
#include "../../Material/Material.hlsl"
#include "TerrainLitSharePass.hlsl"
#include "TerrainLitData.hlsl"
#include "../../ShaderPass/ShaderPassLightTransport.hlsl"
ENDHLSL
}
Pass
{
Name "ShadowCaster"
Tags{ "LightMode" = "ShadowCaster" }
Cull[_CullMode]
ZClip [_ZClip]
ZWrite On
ZTest LEqual
ColorMask 0
HLSLPROGRAM
#define SHADERPASS SHADERPASS_SHADOWS
#define USE_LEGACY_UNITY_MATRIX_VARIABLES
#include "../../ShaderVariables.hlsl"
#include "../../Material/Material.hlsl"
#include "../Lit/ShaderPass/LitDepthPass.hlsl"
#include "TerrainLitData.hlsl"
#include "../../ShaderPass/ShaderPassDepthOnly.hlsl"
ENDHLSL
}
Pass
{
Name "DepthOnly"
Tags{ "LightMode" = "DepthOnly" }
Cull[_CullMode]
ZWrite On
HLSLPROGRAM
// In deferred, depth only pass don't output anything.
// In forward it output the normal buffer
#pragma multi_compile _ WRITE_NORMAL_BUFFER
#define SHADERPASS SHADERPASS_DEPTH_ONLY
#include "../../ShaderVariables.hlsl"
#include "../../Material/Material.hlsl"
#ifdef WRITE_NORMAL_BUFFER // If enabled we need all regular interpolator
#include "../Lit/ShaderPass/LitSharePass.hlsl"
#else
#include "../Lit/ShaderPass/LitDepthPass.hlsl"
#endif
#include "TerrainLitData.hlsl"
#include "../../ShaderPass/ShaderPassDepthOnly.hlsl"
ENDHLSL
}
Pass
{
Name "Forward" // Name is not used
Tags{ "LightMode" = "Forward" } // This will be only for transparent object based on the RenderQueue index
Stencil
{
WriteMask [_StencilWriteMask]
Ref [_StencilRef]
Comp Always
Pass Replace
}
// In case of forward we want to have depth equal for opaque mesh
ZTest [_ZTestDepthEqualForOpaque]
ZWrite [_ZWrite]
Cull [_CullMode]
HLSLPROGRAM
#pragma multi_compile _ DEBUG_DISPLAY
#pragma multi_compile _ LIGHTMAP_ON
#pragma multi_compile _ DIRLIGHTMAP_COMBINED
#pragma multi_compile _ DYNAMICLIGHTMAP_ON
#pragma multi_compile _ SHADOWS_SHADOWMASK
// Setup DECALS_OFF so the shader stripper can remove variants
#pragma multi_compile DECALS_OFF DECALS_3RT DECALS_4RT
// #include "../../Lighting/Forward.hlsl"
//#pragma multi_compile LIGHTLOOP_SINGLE_PASS LIGHTLOOP_TILE_PASS
#define LIGHTLOOP_TILE_PASS
#pragma multi_compile USE_FPTL_LIGHTLIST USE_CLUSTERED_LIGHTLIST
#define SHADERPASS SHADERPASS_FORWARD
// In case of opaque we don't want to perform the alpha test, it is done in depth prepass and we use depth equal for ztest (setup from UI)
#ifndef _SURFACE_TYPE_TRANSPARENT
#define SHADERPASS_FORWARD_BYPASS_ALPHA_TEST
#endif
#include "../../ShaderVariables.hlsl"
#ifdef DEBUG_DISPLAY
#include "../../Debug/DebugDisplay.hlsl"
#endif
#include "../../Lighting/Lighting.hlsl"
#include "TerrainLitSharePass.hlsl"
#include "TerrainLitData.hlsl"
#include "../../ShaderPass/ShaderPassForward.hlsl"
ENDHLSL
}
UsePass "Hidden/Nature/Terrain/Utilities/PICKING"
UsePass "Hidden/Nature/Terrain/Utilities/SELECTION"
}
Dependency "BaseMapShader" = "Hidden/HDRenderPipeline/TerrainLit_Basemap"
Dependency "BaseMapGenShader" = "Hidden/HDRenderPipeline/TerrainLit_Basemap_Gen"
CustomEditor "UnityEditor.Experimental.Rendering.HDPipeline.TerrainLitGUI"
}