关于球型Shader的写法：

Shader "圣剑战姬 Shader/鱼眼shader_Alpha_On_ZWrite_On" 
{ Properties { _MainTex ("材质Texture",2D) = "white" {} _YQOffset ("X位移", Vector) = (0,0,0,0) _XQOffset ("Y位移", Vector) = (0,0,0,0) _ZQOffset ("Z位移", Vector) = (0,0,0,0) _Dist ("灭点", Float) = 0.01} SubShader { Tags { "QUEUE"="Transparent" "IGNOREPROJECTOR"="true" "RenderType"="Transparent" }ZWrite OnCull OffBlend SrcAlpha OneMinusSrcAlphaPass { CGPROGRAM #pragma exclude_renderers ps3 xbox360 flash #pragma fragmentoption ARB_precision_hit_fastest #pragma vertex vert #pragma fragment frag #include "UnityCG.cginc" uniform sampler2D _MainTex; uniform float4 _MainTex_ST; uniform float4 _YQOffset; uniform float4 _XQOffset; uniform float4 _ZQOffset; uniform float _Dist; struct vertexInput { float4 vertex : POSITION; float4 texcoord : TEXCOORD0; }; struct fragmentInput { float4 pos : SV_POSITION; half2 uv : TEXCOORD0; }; fragmentInput vert( vertexInput i ) { fragmentInput o; float4 vPos = mul (UNITY_MATRIX_MV, i.vertex); float xOff = vPos.x*_Dist;vPos += _YQOffset*xOff*xOff; float zOff = vPos.z*_Dist;vPos += _XQOffset*zOff*zOff; float yOff = vPos.y*_Dist;vPos += _ZQOffset*yOff*yOff; o.pos = mul (UNITY_MATRIX_P, vPos); o.uv = TRANSFORM_TEX(i.texcoord, _MainTex); return o; } half4 frag( fragmentInput i ):COLOR { return tex2D( _MainTex,i.uv); } ENDCG } } FallBack "Diffuse" 
}