Fixed multiple local shadows.

ScriptableRenderPipeline/LightweightPipeline/LWRP/LightweightPipeline.cs

             m_MaxLocalLightsShadedPerPass = m_UseComputeBuffer ? kMaxVisibleLocalLights : kMaxNonIndexedLocalLights;
             m_LocalLightIndices = new List<int>(m_MaxLocalLightsShadedPerPass);
 
-            m_ShadowPass = new LightweightShadowPass(m_Asset, m_MaxLocalLightsShadedPerPass);
+            m_ShadowPass = new LightweightShadowPass(m_Asset, kMaxVisibleLocalLights);
 
             // Let engine know we have MSAA on for cases where we support MSAA backbuffer
             if (QualitySettings.antiAliasing != m_Asset.MSAASampleCount)
             {
                 if (visibleLights[i].lightType != LightType.Directional)
                     m_LocalLightIndices.Add(i);
-
-                if (m_LocalLightIndices.Count >= m_MaxLocalLightsShadedPerPass)
-                    break;
             }
 
             // Clear to default all light constant data

ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/Shadows.hlsl

 CBUFFER_END
 
 CBUFFER_START(_LocalShadowBuffer)
-float4x4    _LocalWorldToShadowAtlas[4];
-half        _LocalShadowStrength[4];
+float4x4    _LocalWorldToShadowAtlas[MAX_VISIBLE_LIGHTS];
+half        _LocalShadowStrength[MAX_VISIBLE_LIGHTS];
 half4       _LocalShadowOffset0;
 half4       _LocalShadowOffset1;
 half4       _LocalShadowOffset2;
     float4 shadowCoord = mul(_LocalWorldToShadowAtlas[lightIndex], float4(positionWS, 1.0));
     ShadowSamplingData shadowSamplingData = GetLocalLightShadowSamplingData();
     half shadowStrength = GetLocalLightShadowStrenth(lightIndex);
-    return SampleShadowmap(shadowCoord, TEXTURE2D_PARAM(_LocalShadowMapAtlas, sampler_LocalShadowMapAtlas), shadowSamplingData, shadowStrength);
+    half attenuation = SampleShadowmap(shadowCoord, TEXTURE2D_PARAM(_LocalShadowMapAtlas, sampler_LocalShadowMapAtlas), shadowSamplingData, shadowStrength);
+    return (shadowStrength > 0.0h) ? attenuation : 1.0h;
 #endif
 }