Shadergraph fix for LW PBR template

Conflicts:
   - LightweightPassMetaSimple

ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/InputSurfaceSimple.hlsl

 
 TEXTURE2D(_SpecGlossMap);       SAMPLER(sampler_SpecGlossMap);
 
-half4 SampleSpecularGloss(half2 uv, half alpha)
+half4 SampleSpecularGloss(half2 uv, half alpha, half4 specColor, TEXTURE2D_ARGS(specGlossMap, sampler_specGlossMap))
-    half4 specularGloss = half4(0, 0, 0, 1);
+    half4 specularGloss = half4(0.0h, 0.0h, 0.0h, 1.0h);
-    specularGloss = SAMPLE_TEXTURE2D(_SpecGlossMap, sampler_SpecGlossMap, uv);
+    specularGloss = SAMPLE_TEXTURE2D(TEXTURE2D_PARAM(specGlossMap, sampler_specGlossMap), uv);
-    specularGloss = _SpecColor;
+    specularGloss = specColor;
 #endif
 
 #ifdef _GLOSSINESS_FROM_BASE_ALPHA

ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/LightweightPassLitSimple.hlsl

 
     half3 normalTS = SampleNormal(uv, TEXTURE2D_PARAM(_BumpMap, sampler_BumpMap));
     half3 emission = SampleEmission(uv, _EmissionColor.rgb, TEXTURE2D_PARAM(_EmissionMap, sampler_EmissionMap));
-    half4 specularGloss = SampleSpecularGloss(uv, diffuseAlpha.a);
+    half4 specularGloss = SampleSpecularGloss(uv, diffuseAlpha.a, _SpecColor, TEXTURE2D_PARAM(_SpecGlossMap, sampler_SpecGlossMap));
     half shininess = IN.posWSShininess.w;
 
     InputData inputData;

ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/LightweightPassMetaSimple.hlsl

     float2 uv = i.uv;
     MetaInput o;
     o.Albedo = _Color.rgb * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, uv).rgb;
-    o.SpecularColor = SpecularGloss(uv, 1.0).xyz;
-    o.Emission = Emission(uv);
+    o.SpecularColor = SampleSpecularGloss(uv, 1.0h, _SpecColor, TEXTURE2D_PARAM(_SpecGlossMap, sampler_SpecGlossMap)).xyz;
+    o.Emission = SampleEmission(uv, _EmissionColor.rgb, TEXTURE2D_PARAM(_EmissionMap, sampler_EmissionMap));
 
     return MetaFragment(o);
 }