Unity shader-溶解

最新推荐文章于 2025-06-02 21:33:51 发布

unity游侠

最新推荐文章于 2025-06-02 21:33:51 发布

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分类专栏： unity

本文链接：https://blog.youkuaiyun.com/y90o08u28/article/details/87262908

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这篇博客介绍了如何使用Unity3D的Shader来创建物体溶解的效果。通过定义不同的纹理和参数，调整溶解的大小、速度和颜色，实现动态的物体溶解视觉效果。文章包含Shader的代码实现，并邀请读者一起探讨技术。

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Shader "PengLu/DissolveVF" {
Properties{

       _MainTex("Base (RGB)", 2D) = "white" {}
       _DissolveTex("DissolveTex (RGB)", 2D) = "white" {}
       _LightTex("DissolveTex (RGB)", 2D) = "white" {}

_Tile("DissolveTile", Range(0.1, 1)) = 1

_Amount("DissAmount", Range(0, 1)) = 0.5
_DissSize("DissSize", Range(0, 1)) = 0.1

_DissColor("DissColor", Color) = (1,0,0,1)
_AddColor("AddColor", Color) = (1,1,0,1)

_LightPra("LightColor", Range(1, 2)) = 1

}

       SubShader{
           Tags { "RenderType" = "Opaque" "LightMode" = "ForwardBase"}
           LOD 100

           Pass {
               CGPROGRAM
                   #pragma vertex vert
                   #pragma fragment frag
                   #pragma multi_compile_fog

#include "UnityCG.cginc"
#include "Lighting.cginc"

                   sampler2D _MainTex,_DissolveTex,_LightTex;
                   fixed4 _MainTex_ST,_DissolveTex_ST, _LightTex_ST;
                   half _Tile, _LightPra,_Amount,_DissSize;
                   half4 _DissColor,_AddColor;

                   struct appdata_t {
                       float4 vertex : POSITION;
                       float2 texcoord : TEXCOORD0;
                       float2 texcoord1 : TEXCOORD1;
                       float3 normal : NORMAL;
                   };

                   struct v2f {
                       float4 vertex : SV_POSITION;
                       half2 texcoord : TEXCOORD0;
                       half2 texcoord1 : TEXCOORD1;
                       fixed3 color : COLOR;
                   };

                   v2f vert(appdata_t v)
                   {
                       v2f o;
                       o.vertex = UnityObjectToClipPos(v.vertex);
                       o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
                       o.texcoord1 = TRANSFORM_TEX(v.texcoord1, _MainTex);
                       //o.texcoord1 = v.texcoord1;
                       UNITY_TRANSFER_FOG(o,o.vertex);

                       fixed3 worldNormal = normalize(mul(v.normal, (float3x3)unity_WorldToObject));
                       fixed3 worldLight = normalize(_WorldSpaceLightPos0.xyz);
                       fixed3 diffuse = _LightColor0.rgb * saturate(dot(worldNormal, worldLight));
                       o.color = diffuse; //漫射光

return o;
}

                   fixed4 frag(v2f i) : SV_Target
                   {
                       fixed4 col = tex2D(_MainTex, i.texcoord);
                       fixed4 col_light = tex2D(_LightTex, i.texcoord1);
                       float ClipTex = tex2D(_DissolveTex, i.texcoord1 / _Tile).r;
                       float ClipAmount = ClipTex - _Amount;
                       if (_Amount > 0)
                       {
                           if (ClipAmount <= 0)
                           {
                               clip(-0.1);
                           }
                           else {
                               if (ClipAmount < _DissSize)
                               {
                                   float4 finalColor = lerp(_DissColor,_AddColor,ClipAmount / _DissSize) * 2;
                                   col = col * finalColor;
                               }
                           }
                       }
                       UNITY_APPLY_FOG(i.fogCoord, col);
                       UNITY_OPAQUE_ALPHA(col.a);
                       return col* col_light*_LightPra;
                   }
               ENDCG
           }
       }

}

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