Merge pull request #1331 from Unity-Technologies/shadows-fixes

Fixed handling unknown GPUShadowTypes in the shadow manager.

ScriptableRenderPipeline/Core/CoreRP/Shadow/Shadow.cs

                 int requestIdx        = shadowRequests[i];
                 VisibleLight vl       = lights[requestIdx];
                 int facecount         = 0;
-                GPUShadowType shadowType = GPUShadowType.Point;
+                GPUShadowType shadowType = GetShadowLightType( vl.light );
-                bool    add             = (distToCam < asd.shadowFadeDistance || vl.lightType == LightType.Directional) && m_ShadowSettings.enabled;
+                bool    add             = shadowType != GPUShadowType.Unknown && (distToCam < asd.shadowFadeDistance || vl.lightType == LightType.Directional) && m_ShadowSettings.enabled;
 
                 if( add )
                 {
                             add = --m_MaxShadows[(int)GPUShadowType.Directional, 0] >= 0;
-                            shadowType = GPUShadowType.Directional;
-                            shadowType = GPUShadowType.Point;
-                            shadowType = GPUShadowType.Spot;
                             facecount = 1;
                             break;
                     }