增加传送门

2026-07-05 22:11:50 +08:00
parent 33282c3d83
commit b7aac301ba
17 changed files with 5648 additions and 1 deletions
@@ -0,0 +1,120 @@
+Shader "IndianOcean/PortalVortex"
+{
+    // 传送门旋涡 Shader
+    // 顺时针旋转 + 中心扭曲 + 发光效果
+    // 基于 URP 管线
+    Properties
+    {
+        _MainTex ("主贴图", 2D) = "white" {}
+        _RotationSpeed ("旋转速度", Range(-5.0, 5.0)) = 1.5
+        _VortexStrength ("扭曲强度", Range(0.0, 3.0)) = 1.0
+        _CenterGlow ("中心发光强度", Range(0.0, 3.0)) = 1.5
+        _Color ("色调", Color) = (1.0, 1.0, 1.0, 1.0)
+    }
+    SubShader
+    {
+        Tags
+        {
+            "RenderType" = "Transparent"
+            "Queue" = "Transparent"
+            "RenderPipeline" = "UniversalPipeline"
+        }
+
+        Blend SrcAlpha OneMinusSrcAlpha
+        ZWrite Off
+        ZTest LEqual
+        Cull Off
+
+        Pass
+        {
+            Name "PortalVortex"
+            HLSLPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+
+            struct Attributes
+            {
+                float4 positionOS : POSITION;
+                float2 uv : TEXCOORD0;
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+            };
+
+            struct Varyings
+            {
+                float4 positionCS : SV_POSITION;
+                float2 uv : TEXCOORD0;
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+            };
+
+            CBUFFER_START(UnityPerMaterial)
+                float4 _MainTex_ST;
+                float  _RotationSpeed;
+                float  _VortexStrength;
+                float  _CenterGlow;
+                float4 _Color;
+            CBUFFER_END
+
+            TEXTURE2D(_MainTex);
+            SAMPLER(sampler_MainTex);
+
+            Varyings vert(Attributes input)
+            {
+                Varyings output;
+                UNITY_SETUP_INSTANCE_ID(input);
+                UNITY_TRANSFER_INSTANCE_ID(input, output);
+                output.positionCS = TransformObjectToHClip(input.positionOS.xyz);
+                output.uv = TRANSFORM_TEX(input.uv, _MainTex);
+                return output;
+            }
+
+            half4 frag(Varyings input) : SV_Target
+            {
+                // UV 中心点
+                float2 center = float2(0.5, 0.5);
+                float2 uvOffset = input.uv - center;
+
+                // 极坐标：距离和角度
+                float dist = length(uvOffset);
+                float angle = atan2(uvOffset.y, uvOffset.x);
+
+                // 顺时针旋转：角度减去时间 * 速度
+                float rotation = _Time.y * _RotationSpeed;
+
+                // 扭曲强度随距离减小（中心扭曲更大）
+                float twist = _VortexStrength * (1.0 - dist * 2.0);
+                twist = max(twist, 0.0);
+
+                // 应用旋转 + 扭曲
+                float finalAngle = angle - rotation - twist * 3.14159;
+
+                // 转换回 UV 坐标
+                float2 vortexUV = center + float2(
+                    cos(finalAngle) * dist,
+                    sin(finalAngle) * dist
+                );
+
+                // 采样主贴图
+                half4 texColor = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, vortexUV);
+
+                // 中心发光：距离中心越近越亮
+                float glow = _CenterGlow * (1.0 - dist * 2.0);
+                glow = max(glow, 0.0);
+
+                // 边缘柔和过渡
+                float edgeFade = 1.0 - smoothstep(0.35, 0.5, dist);
+
+                // 最终颜色 = 贴图色 + 中心发光 * 蓝色调
+                float3 glowColor = float3(0.2, 0.6, 1.0) * glow;
+                float3 finalColor = texColor.rgb * _Color.rgb + glowColor;
+
+                float alpha = texColor.a * edgeFade;
+
+                return half4(finalColor, alpha);
+            }
+            ENDHLSL
+        }
+    }
+    FallBack Off
+}