[unity] Added zwrite variant of URP Skeleton-OutlineOnly shader. Closes #2676.

CHANGELOG.md

@@ -164,6 +164,7 @@
   - `Universal Render Pipeline/Spine/Skeleton` shader now performs proper alpha-testing when `Depth Write` is enabled, using the existing `Shadow alpha cutoff` parameter.
   - `SkeletonRootMotion` components now provide a public `Initialize()` method which is automatically called when calling `skeletonAnimation.Initialize(true)` to update the necessary skeleton references. If a different root bone shall be used, be sure to set `skeletonRootMotion.rootMotionBoneName` before calling `skeletonAnimation.Initialize(true)`.
   - Skeleton Mecanim: Added new `Mix Mode` `Match`. When selected, Spine animation weights are calculated to best match the provided Mecanim clip weights. This mix mode is recommended on any layer using blend tree nodes.
+  - URP Shaders: Added `ZWrite` variant of outline shader `Universal Render Pipeline/Spine/Outline/Skeleton-OutlineOnly ZWrite`. Suitable for e.g. depth of field (DoF) effect where writing to the depth buffer is required. Note that for DoF effect, `Render Queue` needs to be set to `Alpha Test`.
 
 - **Breaking changes**
 

spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/Shaders/Outline/Spine-Skeleton-OutlineOnly-ZWrite-URP.shader

@@ -0,0 +1,136 @@
+Shader "Universal Render Pipeline/Spine/Outline/Skeleton-OutlineOnly ZWrite" {
+	Properties {
+		_Cutoff ("Depth alpha cutoff", Range(0,1)) = 0.1
+		[NoScaleOffset] _MainTex("Main Texture", 2D) = "black" {}
+		[HideInInspector] _StencilRef("Stencil Reference", Float) = 1.0
+		[Enum(UnityEngine.Rendering.CompareFunction)] _StencilComp("Stencil Comparison", Float) = 8 // Set to Always as default
+
+		// Outline properties are drawn via custom editor.
+		[HideInInspector] _OutlineWidth("Outline Width", Range(0,8)) = 3.0
+		[HideInInspector][MaterialToggle(_USE_SCREENSPACE_OUTLINE_WIDTH)] _UseScreenSpaceOutlineWidth("Width in Screen Space", Float) = 0
+		[HideInInspector] _OutlineColor("Outline Color", Color) = (1,1,0,1)
+		[HideInInspector] _OutlineReferenceTexWidth("Reference Texture Width", Int) = 1024
+		[HideInInspector] _ThresholdEnd("Outline Threshold", Range(0,1)) = 0.25
+		[HideInInspector] _OutlineSmoothness("Outline Smoothness", Range(0,1)) = 1.0
+		[HideInInspector][MaterialToggle(_USE8NEIGHBOURHOOD_ON)] _Use8Neighbourhood("Sample 8 Neighbours", Float) = 1
+		[HideInInspector] _OutlineOpaqueAlpha("Opaque Alpha", Range(0,1)) = 1.0
+		[HideInInspector] _OutlineMipLevel("Outline Mip Level", Range(0,3)) = 0
+	}
+
+	SubShader {
+		// Universal Pipeline tag is required. If Universal render pipeline is not set in the graphics settings
+		// this Subshader will fail.
+		Tags { "RenderPipeline" = "UniversalPipeline" "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
+		LOD 100
+		Cull Off
+		ZWrite On
+		Blend One OneMinusSrcAlpha
+
+		Stencil {
+			Ref[_StencilRef]
+			Comp[_StencilComp]
+			Pass Keep
+		}
+
+ 		Pass {
+ 			Name "Outline"
+ 
+ 			ZWrite On
+ 
+ 			HLSLPROGRAM
+ 			// Required to compile gles 2.0 with standard srp library
+ 			#pragma prefer_hlslcc gles
+ 			#pragma exclude_renderers d3d11_9x
+ 
+ 			//--------------------------------------
+ 			// GPU Instancing
+ 			#pragma multi_compile_instancing
+ 
+ 			#pragma vertex vertOutline
+ 			#pragma fragment fragOutline
+ 			#pragma shader_feature _ _USE8NEIGHBOURHOOD_ON
+			#pragma shader_feature _ _USE_SCREENSPACE_OUTLINE_WIDTH
+ 
+ 			#define USE_URP
+ 			#define fixed4 half4
+ 			#define fixed3 half3
+ 			#define fixed half
+ 			#define NO_CUTOFF_PARAM
+ 			#include "../Include/Spine-Input-Outline-URP.hlsl"
+ 			#include "../Include/Spine-Outline-Pass-URP.hlsl"
+ 			ENDHLSL
+ 		}
+
+		Pass
+		{
+			Name "DepthOnly"
+			Tags{"LightMode" = "DepthOnly"}
+
+			ZWrite On
+			ColorMask R
+			Cull Off
+
+			HLSLPROGRAM
+			// Required to compile gles 2.0 with standard srp library
+			#pragma prefer_hlslcc gles
+			#pragma exclude_renderers d3d11_9x
+
+			#pragma vertex DepthOnlyVertex
+			#pragma fragment DepthOnlyFragment
+
+			// -------------------------------------
+			// Material Keywords
+			#pragma shader_feature _ALPHATEST_ON
+			#pragma shader_feature _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
+
+			//--------------------------------------
+			// GPU Instancing
+			#pragma multi_compile_instancing
+
+			#define USE_URP
+			#define fixed4 half4
+			#define fixed3 half3
+			#define fixed half
+			#include "../Include/Spine-Input-URP.hlsl"
+			#include "../Include/Spine-DepthOnlyPass-URP.hlsl"
+			ENDHLSL
+		}
+
+		// This pass is used when drawing to a _CameraNormalsTexture texture
+		Pass
+		{
+			Name "DepthNormals"
+			Tags{"LightMode" = "DepthNormals"}
+
+			ZWrite On
+
+			HLSLPROGRAM
+			#pragma vertex DepthNormalsVertex
+			#pragma fragment DepthNormalsFragment
+
+			// -------------------------------------
+			// Material Keywords
+			#pragma shader_feature _ALPHATEST_ON
+			#pragma shader_feature _ _DOUBLE_SIDED_LIGHTING
+
+			// -------------------------------------
+			// Universal Pipeline keywords
+			#pragma multi_compile_fragment _ _WRITE_RENDERING_LAYERS
+
+			//--------------------------------------
+			// GPU Instancing
+			#pragma multi_compile_instancing
+
+			#define USE_URP
+			#define fixed4 half4
+			#define fixed3 half3
+			#define fixed half
+			#include "../Include/Spine-Input-URP.hlsl"
+			#include "../Include/Spine-DepthNormalsPass-URP.hlsl"
+			ENDHLSL
+		}
+	}
+
+	FallBack "Hidden/InternalErrorShader"
+	CustomEditor "SpineShaderWithOutlineGUI"
+}

spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/Shaders/Outline/Spine-Skeleton-OutlineOnly-ZWrite-URP.shader.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: 7ec1933bec5d29c4d8b1bc4a4d24c04c
+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/package.json

@@ -2,7 +2,7 @@
   "name": "com.esotericsoftware.spine.urp-shaders",
   "displayName": "Spine Universal RP Shaders",
   "description": "This plugin provides universal render pipeline (URP) shaders for the spine-unity runtime.\n\nPrerequisites:\nIt requires a working installation of the spine-unity runtime, version 4.2.\n(See http://esotericsoftware.com/git/spine-runtimes/spine-unity)",
-  "version": "4.2.38",
+  "version": "4.2.39",
   "unity": "2019.3",
   "author": {
     "name": "Esoteric Software",