初始化仓库

2026-02-08 17:08:52 +08:00
commit 8763955323
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+Shader "Custom/SimpleInstancedFlash"
+{
+    Properties
+    {
+        _BaseColor ("Base Color", Color) = (1,1,1,1)
+        _FlashColor ("Flash Color", Color) = (1,1,1,1) // 闪白颜色
+        _FlashAmount ("Flash Amount", Range(0, 1)) = 0 // 0=不闪, 1=全闪
+    }
+
+    SubShader
+    {
+        Tags { "RenderType"="Opaque" "RenderPipeline"="UniversalPipeline" "Queue"="Geometry+10" }
+        LOD 100
+
+        Pass
+        {
+            Name "ForwardLit"
+            Tags { "LightMode"="UniversalForward" }
+
+            HLSLPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            
+            // 开启 GPU Instancing 必须的宏
+            #pragma multi_compile_instancing
+            
+            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"
+
+            struct Attributes
+            {
+                float4 positionOS : POSITION;
+                float3 normalOS : NORMAL;
+                UNITY_VERTEX_INPUT_INSTANCE_ID // 1. 输入结构体必须包含 Instance ID
+            };
+
+            struct Varyings
+            {
+                float4 positionCS : SV_POSITION;
+                float3 normalWS : TEXCOORD0;
+                UNITY_VERTEX_INPUT_INSTANCE_ID // 2. 输出结构体必须包含 Instance ID
+            };
+
+            // 3. 定义 Instancing 缓冲区 (这里定义的数据每个物体都可以不同)
+            UNITY_INSTANCING_BUFFER_START(Props)
+                UNITY_DEFINE_INSTANCED_PROP(float4, _BaseColor)
+                UNITY_DEFINE_INSTANCED_PROP(float4, _FlashColor)
+                UNITY_DEFINE_INSTANCED_PROP(float, _FlashAmount)
+            UNITY_INSTANCING_BUFFER_END(Props)
+
+            Varyings vert(Attributes input)
+            {
+                Varyings output;
+                
+                // 4. 设置 Instance ID
+                UNITY_SETUP_INSTANCE_ID(input);
+                UNITY_TRANSFER_INSTANCE_ID(input, output);
+
+                VertexPositionInputs vertexInput = GetVertexPositionInputs(input.positionOS.xyz);
+                output.positionCS = vertexInput.positionCS;
+                
+                VertexNormalInputs normalInput = GetVertexNormalInputs(input.normalOS, float4(0,0,0,0));
+                output.normalWS = normalInput.normalWS;
+
+                return output;
+            }
+
+            half4 frag(Varyings input) : SV_Target
+            {
+                // 5. 片元着色器也要 Setup Instance ID
+                UNITY_SETUP_INSTANCE_ID(input);
+
+                // 6. 使用宏读取属性 (代替直接写 _BaseColor)
+                float4 baseColor = UNITY_ACCESS_INSTANCED_PROP(Props, _BaseColor);
+                float4 flashColor = UNITY_ACCESS_INSTANCED_PROP(Props, _FlashColor);
+                float flashAmount = UNITY_ACCESS_INSTANCED_PROP(Props, _FlashAmount);
+
+                // 简单光照计算 (Lambert)
+                Light mainLight = GetMainLight();
+                float NdotL = saturate(dot(input.normalWS, mainLight.direction));
+                float3 lighting = baseColor.rgb * (mainLight.color * NdotL + unity_AmbientSky.rgb); // 加上环境光防止背光全黑
+
+                // 混合闪白效果
+                float3 finalColor = lerp(lighting, flashColor.rgb, flashAmount);
+
+                return float4(finalColor, baseColor.a);
+            }
+            ENDHLSL
+        }
+    }
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