Fixed GLCore compute buffer

com.unity.render-pipelines.lightweight/LWRP/LightweightForwardRenderer.cs

             get
             {
                 return SystemInfo.supportsComputeShaders &&
-                    !Application.isMobilePlatform && Application.platform != RuntimePlatform.WebGLPlayer;
+                       SystemInfo.graphicsDeviceType != GraphicsDeviceType.OpenGLCore &&
+                       !Application.isMobilePlatform &&
+                       Application.platform != RuntimePlatform.WebGLPlayer;
             }
         }
 

com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/Input.hlsl

 // Must match check of use compute buffer in LightweightPipeline.cs
 // GLES check here because of WebGL 1.0 support
 // TODO: check performance of using StructuredBuffer on mobile as well
-#if defined(SHADER_API_MOBILE) || defined(SHADER_API_GLES)
+#if defined(SHADER_API_MOBILE) || defined(SHADER_API_GLES) || defined(SHADER_API_GLCORE)
 #define USE_STRUCTURED_BUFFER_FOR_LIGHT_DATA 0
 #else
 #define USE_STRUCTURED_BUFFER_FOR_LIGHT_DATA 1