零碎代码

//------------------------------------------------------------------------------------vs
#ifndef LIGHTMAP_OFF
o.lmap.xy = v.texcoord1.xy * unity_LightmapST.xy + unity_LightmapST.zw;
#endif

//------------------------------------------------------------------------------------ps
// lightmaps:   
#ifndef LIGHTMAP_OFF     
	#ifndef DIRLIGHTMAP_OFF       
		// directional lightmaps       
		fixed4 lmtex = tex2D(unity_Lightmap, IN.lmap.xy);       
		fixed4 lmIndTex = tex2D(unity_LightmapInd, IN.lmap.xy);       
		half3 lm = LightingLambert_DirLightmap(o, lmtex, lmIndTex, 0).rgb;     
	#else // !DIRLIGHTMAP_OFF       
		// single lightmap       
		fixed4 lmtex = tex2D(unity_Lightmap, IN.lmap.xy);       
		fixed3 lm = DecodeLightmap (lmtex);     
	#endif // !DIRLIGHTMAP_OFF  
#endif // LIGHTMAP_OFF

half2 lmap : TEXCOORD4;
o.lmap.xy = v.texcoord1.xy * unity_LightmapST.xy + unity_LightmapST.zw;
fixed3 lm = DecodeLightmap(tex2D(unity_Lightmap, i.lmap.xy));