135 lines
4.8 KiB
Plaintext
135 lines
4.8 KiB
Plaintext
// SimpleWeaponHighlight.shader
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// 基于URP/Lit的简化版，仅添加自发光强度控制
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Shader "URP/Weapon/SimpleHighlight"
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{
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Properties
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{
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// 基础属性
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[MainTexture] _BaseMap("Base Texture", 2D) = "white" {}
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[MainColor] _BaseColor("Base Color", Color) = (1,1,1,1)
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// 材质属性
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_Metallic("Metallic", Range(0, 1)) = 0.5
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_Smoothness("Smoothness", Range(0, 1)) = 0.5
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// 核心：自发光强度控制
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[HDR] _EmissionColor("Emission Color", Color) = (1,1,1,1)
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_EmissionStrength("Emission Strength", Range(0, 10)) = 0.0
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}
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SubShader
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{
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Tags
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{
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"RenderType"="Opaque"
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"RenderPipeline"="UniversalPipeline"
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"Queue"="Geometry"
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}
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// 主光照通道
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Pass
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{
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Name "ForwardLit"
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Tags { "LightMode" = "UniversalForward" }
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HLSLPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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// URP核心库
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
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// 纹理和采样器
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TEXTURE2D(_BaseMap);
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SAMPLER(sampler_BaseMap);
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// 材质属性缓冲区
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CBUFFER_START(UnityPerMaterial)
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float4 _BaseMap_ST;
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float4 _BaseColor;
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float _Metallic;
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float _Smoothness;
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float4 _EmissionColor;
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float _EmissionStrength;
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CBUFFER_END
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// 顶点输入结构
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struct Attributes
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{
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float4 positionOS : POSITION;
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float3 normalOS : NORMAL;
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float2 texcoord : TEXCOORD0;
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};
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// 顶点输出结构
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struct Varyings
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{
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float2 uv : TEXCOORD0;
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float3 normalWS : TEXCOORD1;
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float3 viewDirWS : TEXCOORD2;
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float4 positionHCS : SV_POSITION;
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};
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// 顶点着色器
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Varyings vert(Attributes input)
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{
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Varyings output;
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// 顶点位置变换
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VertexPositionInputs vertexInput = GetVertexPositionInputs(input.positionOS.xyz);
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output.positionHCS = vertexInput.positionCS;
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// 法线变换
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VertexNormalInputs normalInput = GetVertexNormalInputs(input.normalOS);
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output.normalWS = normalInput.normalWS;
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// 视线方向
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output.viewDirWS = GetWorldSpaceViewDir(vertexInput.positionWS);
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// 纹理坐标
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output.uv = TRANSFORM_TEX(input.texcoord, _BaseMap);
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return output;
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}
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// 片元着色器
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half4 frag(Varyings input) : SV_Target
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{
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// 采样基础纹理
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half4 baseColor = SAMPLE_TEXTURE2D(_BaseMap, sampler_BaseMap, input.uv) * _BaseColor;
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// 获取主光源
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Light mainLight = GetMainLight();
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// 基础光照计算（Lambert漫反射）
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float3 normalWS = normalize(input.normalWS);
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float NdotL = saturate(dot(normalWS, mainLight.direction));
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float3 diffuse = baseColor.rgb * NdotL * mainLight.color;
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// 高光计算（简化版Blinn-Phong）
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float3 viewDirWS = normalize(input.viewDirWS);
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float3 halfDir = normalize(mainLight.direction + viewDirWS);
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float NdotH = saturate(dot(normalWS, halfDir));
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float specular = pow(NdotH, _Smoothness * 128.0) * _Metallic;
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float3 specularColor = specular * mainLight.color;
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// 自发光计算（核心）
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float3 emission = _EmissionColor.rgb * _EmissionStrength;
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// 最终颜色合成：基础光照 + 高光 + 自发光
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float3 finalColor = diffuse + specularColor + emission;
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return half4(finalColor, baseColor.a);
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}
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ENDHLSL
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}
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// 使用URP Lit的阴影和深度Pass，保持兼容性
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UsePass "Universal Render Pipeline/Lit/ShadowCaster"
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UsePass "Universal Render Pipeline/Lit/DepthOnly"
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}
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FallBack "Universal Render Pipeline/Lit"
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} |