更新

Assets/Shaders/ScriptablePostProcessor/Shaders/AnimeACES.shader

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+Shader "SLS/Postprocessing/AnimeACES"
+{
+    SubShader
+    {
+        Tags
+        {
+            "RenderType" = "Opaque"
+            "RenderPipeline" = "UniversalPipeline"
+        }
+        ZWrite Off
+        Cull Off
+        ZTest Always
+        
+        Pass
+        {
+            Name "Anime ACES Tonemapping"
+            Blend Off // 强制覆盖
+
+            HLSLPROGRAM
+            #pragma vertex Vert
+            #pragma fragment Frag
+
+            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+            #include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"
+
+            // --- 参数定义 ---
+            float4 _TonemapParams; 
+            // x: Exposure
+            // y: Contrast
+            // z: Saturation
+            // w: Hue Preservation (新增：色彩保留强度 0-1)
+
+            float4 _ACESCoeffs; 
+            // x: A, y: B, z: C, w: D
+            
+            float _ACES_E; // E
+
+            float4 _ColorFilter;
+
+            // Narkowicz ACES 曲线
+            float3 ACESCurve(float3 x)
+            {
+                float a = _ACESCoeffs.x;
+                float b = _ACESCoeffs.y;
+                float c = _ACESCoeffs.z;
+                float d = _ACESCoeffs.w;
+                float e = _ACES_E;
+
+                return saturate((x * (a * x + b)) / (x * (c * x + d) + e));
+            }
+
+            // 标量版本
+            float ACESCurve(float x)
+            {
+                float a = _ACESCoeffs.x;
+                float b = _ACESCoeffs.y;
+                float c = _ACESCoeffs.z;
+                float d = _ACESCoeffs.w;
+                float e = _ACES_E;
+
+                return saturate((x * (a * x + b)) / (x * (c * x + d) + e));
+            }
+
+            half4 Frag(Varyings input) : SV_Target
+            {
+                float2 uv = input.texcoord;
+                half4 sceneColor = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv);
+                half3 color = sceneColor.rgb;
+
+                // 1. Exposure (曝光)
+                color *= _TonemapParams.x;
+
+                // 2. Contrast (对比度) - 【核心修正】
+                // Pivot 从 0.5 改为 0.18 (Linear Middle Gray)
+                // 这样增加对比度会压暗阴影，而不是提亮阴影
+                float midGray = 0.18;
+                color = (color - midGray) * _TonemapParams.y + midGray;
+                color = max(0, color);
+
+                // 3. ACES Tonemapping with Hue Preservation (色彩保留) - 【核心修正】
+                float huePreserve = _TonemapParams.w;
+
+                // A. 标准 ACES (会吃色，RGB 通道独立压缩)
+                float3 acesFit = ACESCurve(color);
+
+                // B. 亮度 ACES (不吃色，只压缩亮度)
+                float lum = Luminance(color);
+                float lumTonemapped = ACESCurve(lum);
+                // 重建颜色：保持原色相，只改变亮度
+                float3 colorPreserved = color * (lumTonemapped / max(lum, 1e-4));
+
+                // 混合两者：二次元通常希望皮肤保色(B)，但场景光影有电影感(A)
+                // 建议 Hue Preservation 设为 0.5 左右
+                color = lerp(acesFit, colorPreserved, huePreserve);
+
+                // 4. Saturation (饱和度)
+                // 重新计算亮度进行饱和度调整
+                float finalLum = Luminance(color);
+                color = lerp(finalLum.xxx, color, _TonemapParams.z);
+
+                // 5. Color Filter
+                color *= _ColorFilter.rgb;
+
+                return half4(color, sceneColor.a);
+            }
+            ENDHLSL
+        }
+    }
+}

Assets/Shaders/ScriptablePostProcessor/Shaders/AnimeACES.shader.meta

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+guid: d66798f4c56ff9d43bf821e0cd4f4b95
+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Shaders/ScriptablePostProcessor/Shaders/AnimeBloom.shader

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+Shader "SLS/Postprocessing/AnimeBloom"
+{
+    Properties
+    {
+        _MainTex ("Texture", 2D) = "white" {}
+    }
+
+    HLSLINCLUDE
+        #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+        #include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"
+
+        // --- 参数定义 ---
+        float4 _BloomParams; // x: Intensity, y: Threshold, z: SoftKnee, w: Clamp
+        float4 _BloomTint;   // 泛光染色
+        float _BlurRadius;   // 模糊扩散半径 (控制光晕大小的关键)
+
+        // 纹理
+        TEXTURE2D(_BloomTex);
+        SAMPLER(sampler_BloomTex);
+
+        // --- 辅助函数：Prefilter (提取高亮) ---
+        half3 Prefilter(half3 color)
+        {
+            float threshold = _BloomParams.y;
+            float softKnee = _BloomParams.z;
+            float clampVal = _BloomParams.w;
+
+            // 1. 限制最大亮度 (防闪烁/萤火虫噪点)
+            color = min(color, clampVal);
+
+            // 2. 阈值计算 (使用 Soft Knee 曲线让过渡更自然)
+            // 标准公式：(Brightness - Threshold) / max(Brightness, 0.0001)
+            // 这里使用一个更平滑的曲线版本，防止高光边缘切变太硬
+            float brightness = Max3(color.r, color.g, color.b);
+            float soft = brightness - threshold + softKnee;
+            soft = clamp(soft, 0, 2 * softKnee);
+            soft = soft * soft / (4 * softKnee + 1e-4);
+            
+            float contribution = max(soft, brightness - threshold);
+            contribution /= max(brightness, 1e-4);
+
+            return color * contribution;
+        }
+
+        // --- Pass 0: Prefilter ---
+        half4 FragPrefilter(Varyings input) : SV_Target
+        {
+            // 采样原图
+            half4 color = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, input.texcoord);
+            // 提取高亮
+            half3 bloom = Prefilter(color.rgb);
+            return half4(bloom, 1.0);
+        }
+
+        // --- Pass 1: Downsample (Kawase 4-Tap) ---
+        // 降采样：取 4 个对角像素的平均值，范围随分辨率降低而扩大
+        half4 FragDownsample(Varyings input) : SV_Target
+        {
+            float2 uv = input.texcoord;
+            float4 texelSize = _BlitTexture_TexelSize; 
+            
+            // 扩散偏移量，随 BlurRadius 调整
+            float2 offset = texelSize.xy * _BlurRadius; 
+
+            half3 c0 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv - offset).rgb;
+            half3 c1 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv + float2(offset.x, -offset.y)).rgb;
+            half3 c2 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv - float2(offset.x, -offset.y)).rgb;
+            half3 c3 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv + offset).rgb;
+
+            half3 color = (c0 + c1 + c2 + c3) * 0.25;
+            return half4(color, 1.0);
+        }
+
+        // --- Pass 2: Upsample (Kawase 4-Tap + Blend) ---
+        // 升采样：高质量混合。
+        // 这里采用 Dual Kawase 的升采样逻辑，混合上一级纹理
+        half4 FragUpsample(Varyings input) : SV_Target
+        {
+            float2 uv = input.texcoord;
+            float4 texelSize = _BlitTexture_TexelSize;
+            float2 offset = texelSize.xy * _BlurRadius * 0.5; // 升采样时半径减半，为了更平滑
+
+            // 4-Tap 采样高一级的纹理
+            half3 c0 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv - offset * float2(1, 1)).rgb;
+            half3 c1 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv + offset * float2(1, -1)).rgb;
+            half3 c2 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv - offset * float2(1, -1)).rgb;
+            half3 c3 = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv + offset * float2(1, 1)).rgb;
+            
+            half3 blur = (c0 + c1 + c2 + c3) * 0.25;
+
+            // 这一步在 C# 中是通过 Blit 叠加到上一级 RT 上的
+            // 所以这里直接输出 blur 结果，混合模式设为 Add 即可
+            return half4(blur, 1.0);
+        }
+
+        // --- Pass 3: Composite (最终合成) ---
+        half4 FragComposite(Varyings input) : SV_Target
+        {
+            float2 uv = input.texcoord;
+            
+            // 原始画面
+            half4 baseColor = SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uv);
+            
+            // 泛光结果 (经过多次升采样后的最终纹理)
+            half3 bloom = SAMPLE_TEXTURE2D(_BloomTex, sampler_BloomTex, uv).rgb;
+
+            // 应用强度和染色
+            bloom *= _BloomParams.x * _BloomTint.rgb;
+
+            // 叠加 (Additive)
+            // 也可以尝试 Screen 混合模式让光变得更柔和，但 Additive 最符合物理发光
+            return half4(baseColor.rgb + bloom, baseColor.a);
+        }
+
+    ENDHLSL
+
+    SubShader
+    {
+        Tags { "RenderType"="Opaque" "RenderPipeline"="UniversalPipeline" }
+        ZWrite Off Cull Off
+
+        // 0: Prefilter
+        Pass
+        {
+            Name "Bloom Prefilter"
+            HLSLPROGRAM
+            #pragma vertex Vert
+            #pragma fragment FragPrefilter
+            ENDHLSL
+        }
+
+        // 1: Downsample
+        Pass
+        {
+            Name "Bloom Downsample"
+            HLSLPROGRAM
+            #pragma vertex Vert
+            #pragma fragment FragDownsample
+            ENDHLSL
+        }
+
+        // 2: Upsample
+        Pass
+        {
+            Name "Bloom Upsample"
+            Blend One One // Additive Blend for upsampling accumulation
+            HLSLPROGRAM
+            #pragma vertex Vert
+            #pragma fragment FragUpsample
+            ENDHLSL
+        }
+
+        // 3: Composite
+        Pass
+        {
+            Name "Bloom Composite"
+            HLSLPROGRAM
+            #pragma vertex Vert
+            #pragma fragment FragComposite
+            ENDHLSL
+        }
+    }
+}

Assets/Shaders/ScriptablePostProcessor/Shaders/AnimeBloom.shader.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: 3bc1d4066f58f6e47aeb7c358d24d593
+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: