新材质和优化？

Signed-off-by: TRAfoer <lhf190@outlook.com>
2025-11-22 22:55:31 +08:00
parent cc6d39418e
commit 117352182b
29 changed files with 17379 additions and 16842 deletions
--- a/Assets/ThemeBundles/Basic/Materials/PseudoShadow.mat
+++ b/Assets/ThemeBundles/Basic/Materials/PseudoShadow.mat
@@ -0,0 +1,142 @@
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--- a/Assets/ThemeBundles/Basic/Materials/PseudoShadow.mat.meta
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--- a/Assets/ThemeBundles/Basic/Materials/PseudoShadow.shader
+++ b/Assets/ThemeBundles/Basic/Materials/PseudoShadow.shader
@@ -0,0 +1,115 @@
+Shader "Custom/ImprovedPseudoShadow" {
+    Properties {
+        [Header(Base)]
+        _MainTex ("Texture", 2D) = "white" {}
+        _Color ("Main Color", Color) = (1,1,1,1)
+
+        [Header(Shadow)]
+        _ShadowColor ("Shadow Color", Color) = (0.2, 0.2, 0.3, 1) // 默认偏蓝的阴影
+        _ShadowThreshold ("Shadow Threshold", Range(-1,1)) = 0.0
+        _ShadowSmoothness ("Shadow Smoothness", Range(0,1)) = 0.1
+
+        [Header(Lighting Mode)]
+        [Toggle(USE_WORLD_LIGHT)] _UseWorldLight ("Use Fixed World Light?", Float) = 0
+        _FakeLightDir ("Fake Light Dir (XYZ)", Vector) = (0.5, 1, 0.5, 0) // 模拟从右上方来的光
+    }
+
+    SubShader {
+        Tags { "RenderType"="Transparent" }
+        LOD 100
+
+        Pass {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            // 开启 GPU Instancing 支持
+            #pragma multi_compile_instancing
+            // 开启着色器变体以支持两种光照模式
+            #pragma shader_feature USE_WORLD_LIGHT
+            
+            #include "UnityCG.cginc"
+
+            struct appdata {
+                float4 vertex : POSITION;
+                float3 normal : NORMAL;
+                float2 uv : TEXCOORD0;
+                UNITY_VERTEX_INPUT_INSTANCE_ID // Instancing ID
+            };
+
+            struct v2f {
+                float2 uv : TEXCOORD0;
+                float4 vertex : SV_POSITION;
+                float lightFactor : TEXCOORD1; // 传递光照因子
+                UNITY_VERTEX_INPUT_INSTANCE_ID // Instancing ID
+            };
+
+            sampler2D _MainTex;
+            float4 _MainTex_ST;
+            
+            // 声明 Instancing 属性变量
+            UNITY_INSTANCING_BUFFER_START(Props)
+                UNITY_DEFINE_INSTANCED_PROP(fixed4, _Color)
+                UNITY_DEFINE_INSTANCED_PROP(fixed4, _ShadowColor)
+                UNITY_DEFINE_INSTANCED_PROP(float4, _FakeLightDir)
+                UNITY_DEFINE_INSTANCED_PROP(float, _ShadowThreshold)
+                UNITY_DEFINE_INSTANCED_PROP(float, _ShadowSmoothness)
+            UNITY_INSTANCING_BUFFER_END(Props)
+
+            v2f vert (appdata v) {
+                v2f o;
+                UNITY_SETUP_INSTANCE_ID(v);
+                UNITY_TRANSFER_INSTANCE_ID(o, v);
+
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.uv = TRANSFORM_TEX(v.uv, _MainTex);
+
+                float3 normalWorld = UnityObjectToWorldNormal(v.normal);
+                float3 lightDir;
+
+                #ifdef USE_WORLD_LIGHT
+                    // 改进1：使用固定的世界空间伪光照方向
+                    lightDir = normalize(UNITY_ACCESS_INSTANCED_PROP(Props, _FakeLightDir).xyz);
+                #else
+                    // 原版逻辑：使用视线方向 (Headlamp)
+                    // 注意：为了获得类似漫反射的效果，这里通常不需要取反，
+                    // 但如果要模拟“边缘光”则算法不同。这里沿用原文档的思路：面朝相机越亮。
+                    lightDir = normalize(WorldSpaceViewDir(v.vertex));
+                #endif
+
+                // 点积计算 (-1 到 1)
+                float dotProduct = dot(normalWorld, lightDir);
+                
+                // 将点积结果保存，在片元阶段处理颜色，或者直接在这里计算
+                // 保持 Vertex Lighting 的高性能
+                o.lightFactor = dotProduct;
+
+                return o;
+            }
+
+            fixed4 frag (v2f i) : SV_Target {
+                UNITY_SETUP_INSTANCE_ID(i);
+
+                // 获取属性
+                fixed4 mainColor = UNITY_ACCESS_INSTANCED_PROP(Props, _Color);
+                fixed4 shadowColor = UNITY_ACCESS_INSTANCED_PROP(Props, _ShadowColor);
+                float threshold = UNITY_ACCESS_INSTANCED_PROP(Props, _ShadowThreshold);
+                float smoothness = UNITY_ACCESS_INSTANCED_PROP(Props, _ShadowSmoothness);
+
+                fixed4 texCol = tex2D(_MainTex, i.uv) * mainColor;
+
+                // 改进2：更平滑且可控的阈值计算 (Smoothstep)
+                // lightFactor 越大说明越直接面对光源
+                float lightIntensity = smoothstep(threshold, threshold + smoothness, i.lightFactor);
+
+                // 改进3：基于光照强度的颜色插值 (Lerp)
+                // 0 (背光) -> ShadowColor
+                // 1 (受光) -> Texture Color
+                fixed3 finalRGB = lerp(shadowColor.rgb * texCol.rgb, texCol.rgb, lightIntensity);
+
+                return fixed4(finalRGB, texCol.a);
+            }
+            ENDCG
+        }
+    }
+    FallBack "VertexLit"
+}
--- a/Assets/ThemeBundles/Basic/Materials/PseudoShadow.shader.meta
+++ b/Assets/ThemeBundles/Basic/Materials/PseudoShadow.shader.meta
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--- a/Assets/ThemeBundles/Basic/Prefabs/Capsule.prefab
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--- a/Assets/ThemeBundles/Basic/Prefabs/Cube.prefab
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--- a/Assets/ThemeBundles/Basic/Prefabs/Cylinder.prefab
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--- a/Assets/ThemeBundles/Basic/Prefabs/Plane.prefab
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--- a/Assets/ThemeBundles/Basic/Prefabs/Sphere.prefab
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