Vertex and Fragment Shader 数据类型

Shader "GK/Test"
{

	SubShader
	{
		pass
		{
			CGPROGRAM

			#pragma vertex vert
			#pragma fragment frag
			#define MACROFL FL4(fl4.ab,fl3.zy);//支持宏定义

			typedef float4 FL4;//支持别名
			struct v2f//支持结构体
			{
			      float2 uv;
			      float4 pos;
			}

			void vert(in float2 objPos:POSITION,out float4 pos:POSITION)
			{
				pos=float4(objPos,0,1);
			}
			void frag(out float4 col:color)
			{
				fixed r=1;
				fixed g=1;
				fixed b=0;
				fixed a=0.5;
				col=fixed4(r,g,b,a);
				bool b1=false;
				col=b1?col:fixed4(0,1,0,1);

				float2 fl2=float2(1,0);
				float3 fl3=float3(1,0,1);
				float4 fl4=float4(0.54,0,1,1);
				FL4 fl=MACROFL
				col=fl;
				col=float4(fl3.xy,fl2);//，swizzle操作
				float2x4 M2x4={fl4,{0,1,0,1}};//矩阵
				col=M2x4[0];
				float arr[4]={1,0.4,0.4,1};
				col=float4(arr[0],arr[1],arr[2],arr[3]);//数组
				v2f o;
				o.pos=fl4;
				o.ui=fl2
			}
			ENDCG
		}
	}
}