纹理采样(tex2D)

作者：追风剑情发布于：2014-6-27 21:25 分类：Shader

一、新建个Shader

Shader "Shader_tex2D" {
	Properties {
		_MainTex ("Base (RGB)", 2D) = "white" {}
	}
	SubShader {
		Tags { "RenderType" = "Opaque" }
		LOD 200
 
		CGPROGRAM
		//声明表面着色函数并设置光照模式为Lambert(漫反射)
		#pragma surface surf Lambert
		sampler2D _MainTex;
		struct Input {
			float2 uv_MainTex;
		};
		void surf (Input IN, inout SurfaceOutput o) {
			half4 c = tex2D(_MainTex, IN.uv_MainTex);//从纹理中采样
			o.Albedo = c.rgb;//设置反射光颜色
			o.Alpha = c.a;
		}
		ENDCG
	}
 
Fallback "Diffuse"
	
} // shader