Shader "AP01/L18/Sequence"
{Properties{_MainTex    ("RGB:颜色 A:透贴", 2d) = "gray"{}_Opacity    ("透明度", range(0, 1)) = 0.5_Sequence   ("序列帧", 2d) = "gray"{}_RowCount   ("行数", int) = 1_ColCount   ("列数", int) = 1_Speed      ("速度", range(0.0, 15.0)) = 1}SubShader{Tags{"Queue"="Transparent"               // 调整渲染顺序"RenderType"="Transparent"          // 对应改为Cutout"ForceNoShadowCasting"="True"       // 关闭阴影投射"IgnoreProjector"="True"            // 不响应投射器}Pass{Name "FORWARD"Tags { "LightMode"="ForwardBase"  }Blend One OneMinusSrcAlpha          // 修改混合方式One/SrcAlpha OneMinusSrcAlphaCGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"#pragma multi_compile_fwdbase_fullshadows#pragma target 3.0// 输入参数uniform sampler2D _MainTex;uniform half _Opacity;// 输入结构struct VertexInput{float4 vertex : POSITION;       // 顶点位置 总是必要float2 uv : TEXCOORD0;          // UV信息 采样贴图用};// 输出结构struct VertexOutput{float4 pos : SV_POSITION;       // 顶点位置 总是必要float2 uv : TEXCOORD0;          // UV信息 采样贴图用};// 输入结构>>>顶点Shader>>>输出结构VertexOutput vert (VertexInput v){VertexOutput o = (VertexOutput)0;o.pos = UnityObjectToClipPos( v.vertex);    // 顶点位置 OS>CSo.uv = v.uv;                                // UV信息 支持TilingOffsetreturn o;}// 输出结构>>>像素half4 frag(VertexOutput i) : COLOR{half4 var_MainTex = tex2D(_MainTex, i.uv);      // 采样贴图 RGB颜色 A透贴half3 finalRGB = var_MainTex.rgb;half opacity = var_MainTex.a * _Opacity;return half4(finalRGB * opacity, opacity);                // 返回值}ENDCG}Pass{Name "FORWARD"Tags { "LightMode"="ForwardBase" }Blend One One          // 混合方式CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"#pragma multi_compile_fwdbase_fullshadows#pragma target 3.0// 输入参数uniform sampler2D _Sequence; uniform float4 _Sequence_ST;uniform half _Opacity;uniform half _RowCount;uniform half _ColCount;uniform half _Speed;// 输入结构struct VertexInput{float4 vertex : POSITION;       // 顶点位置 总是必要float3 normal : NORMAL;float2 uv : TEXCOORD0;          // UV信息 采样贴图用};// 输出结构struct VertexOutput{float4 pos : SV_POSITION;       // 顶点位置 总是必要float2 uv : TEXCOORD0;          // UV信息 采样贴图用};// 输入结构>>>顶点Shader>>>输出结构VertexOutput vert (VertexInput v){VertexOutput o = (VertexOutput)0;v.vertex.xyz += v.normal * 0.03;            // 顶点位置法向挤出o.pos = UnityObjectToClipPos(v.vertex);     // 顶点位置 OS>CSo.uv = TRANSFORM_TEX(v.uv, _Sequence);      // 前置UV ST操作float id = floor(_Time.z * _Speed);         // 计算序列idfloat idV = floor(id / _ColCount);          // 计算V轴idfloat idU = id - idV * _ColCount;           // 计算U轴idfloat stepU = 1.0 / _ColCount;              // 计算U轴步幅float stepV = 1.0 / _RowCount;              // 计算V轴步幅float2 initUV = o.uv * float2(stepU, stepV) + float2(0.0, stepV * (_ColCount - 1.0));   // 计算初始UVo.uv = initUV + float2(idU * stepU, idV * stepV);   // 计算序列帧UVreturn o;}// 输出结构>>>像素half4 frag(VertexOutput i) : COLOR{half4 var_Sequence = tex2D(_Sequence, i.uv);      // 采样贴图 RGB颜色 A透贴half3 finalRGB = var_Sequence.rgb;half opacity = var_Sequence.a * _Opacity;return half4(finalRGB * opacity, opacity);        // 返回值}ENDCG}}
}极坐标_PolarCoord_代码部分
极坐标的换算只能在像素Shader里面去做
Shader "AP01/L18/PolarCoord"
{Properties{_MainTex    ("RGB:颜色 A:透贴", 2d)   = "gray"{}[HDR]_Color      ("混合颜色", color)         = (1.0, 1.0, 1.0, 1.0)_Opacity    ("透明度", range(0, 1))     = 0.5  }SubShader{Tags{"Queue"="Transparent"               // 调整渲染顺序"RenderType"="Transparent"          // 对应改为Cutout"ForceNoShadowCasting"="True"       // 关闭阴影投射"IgnoreProjector"="True"            // 不响应投射器}Pass{Name "FORWARD"Tags { "LightMode"="ForwardBase" }Blend One OneMinusSrcAlpha                       // 修改混合方式CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"#pragma multi_compile_fwdbase_fullshadows#pragma target 3.0// 输入参数uniform sampler2D _MainTex;uniform half _Opacity;uniform half3 _Color;// 输入结构struct VertexInput{float4 vertex : POSITION;       // 顶点位置 总是必要float2 uv : TEXCOORD0;          // UV信息 采样贴图用float4 color : COLOR;};// 输出结构struct VertexOutput{float4 pos : SV_POSITION;       // 顶点位置 总是必要float2 uv : TEXCOORD0;          // UV信息 采样贴图用float4 color : COLOR;};// 输入结构>>>顶点Shader>>>输出结构VertexOutput vert (VertexInput v){VertexOutput o = (VertexOutput)0;o.pos = UnityObjectToClipPos( v.vertex);    // 顶点位置 OS>CSo.uv = v.uv;                                // UV信息 支持TilingOffseto.color = v.color;return o;}// 直角坐标转极坐标方法float2 RectToPolar(float2 uv, float2 centerUV){uv = uv - centerUV;float theta = atan2(uv.y, uv.x);    // atan()值域[-π/2, π/2]一般不用; atan2()值域[-π, π]float r = length(uv);return float2(theta, r);}// 输出结构>>>像素half4 frag(VertexOutput i) : COLOR{// 直角坐标转极坐标float2 thetaR = RectToPolar(i.uv, float2(0.5, 0.5));// 极坐标转纹理采样UVfloat2 polarUV = float2(thetaR.x / 3.141593 * 0.5 + 0.5,    // θ映射到[0, 1]thetaR.y + frac(_Time.x * 3.0)      // r随时间流动);// 采样MainTexhalf4 var_MainTex = tex2D(_MainTex, polarUV);// 处理最终输出half3 finalRGB = (1 - var_MainTex.rgb) * _Color;half opacity = (1 - var_MainTex.r) * _Opacity * i.color.r;// 返回值return half4(finalRGB * opacity, opacity);}ENDCG}}
}