Shader "MyShader/SampleLightmap"

{

	SubShader

	{

		Pass

		{

			CGPROGRAM

			#pragma vertex vert

			#pragma fragment frag

			#pragma multi_compile _ LIGHTMAP_ON

			#include"Lighting.cginc"

			struct VertexData

			{

				float4 pos:POSITION;

				float2 uv:TEXCOORD0;

				float2 uv1:TEXCOORD1;

			};

			struct V2F

			{

				float4 pos:SV_POSITION;

				float2 uv:TEXCOORD0;

				#if defined(LIGHTMAP_ON)

					float2 uv1:TEXCOORD1;

				#endif

			};

			V2F vert(VertexData v)

			{

				V2F res;

				res.pos = UnityObjectToClipPos(v.pos);

				res.uv = v.uv;

				#if defined(LIGHTMAP_ON)

				res.uv1 = v.uv1 * unity_LightmapST.xy + unity_LightmapST.zw;

				#endif

				return res;

			}

			fixed4 frag(V2F i) :SV_TARGET

			{

				fixed4 col = fixed4(1,0,0,1);

				#if defined(LIGHTMAP_ON)

					col.rgb = DecodeLightmap(UNITY_SAMPLE_TEX2D(unity_Lightmap, i.uv1));

				#endif

				return col;

			}

			ENDCG

		}

		Pass

		{

			Tags{ "LightMode" = "Meta" }

			CGPROGRAM

			#pragma vertex vert

			#pragma fragment frag

			#include "UnityStandardInput.cginc"

			#include "UnityMetaPass.cginc"

			struct V2F

			{

				float4 pos:SV_POSITION;

				float4 uv:TEXCOORD0;

			};

			V2F vert(VertexInput v)

			{

				V2F o;

				o.pos = UnityMetaVertexPosition(v.vertex, v.uv1.xy, v.uv2.xy, unity_LightmapST, unity_DynamicLightmapST);

				o.uv = TexCoords(v);

				return o;

			}

			fixed4 frag(V2F i) :SV_TARGET

			{

				UnityMetaInput o;

				UNITY_INITIALIZE_OUTPUT(UnityMetaInput, o);

				o.Albedo = fixed3(1, 1, 0); //这里只是将漫反射添加到烘焙贴图中去
　　　　　　　　　　　　　　　　　　　 o.Emission = xxxx;
　　　　　　　　　　　　　　　　　　　　o.SpecularColor = xxxx;


				return UnityMetaFragment(o);

			}

			ENDCG

		}

	}

}