Merge remote-tracking branch 'refs/remotes/origin/master' into Add-physical-light-unity-support

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Sky/SkyRenderingContext.cs

             {
                 if (skyContext.skyParametersHash != 0)
                 {
+                    CoreUtils.ClearCubemap(cmd, m_SkyboxCubemapRT, Color.black, true);
                     if (m_SupportsConvolution)
                     {
                         CoreUtils.ClearCubemap(cmd, m_SkyboxGGXCubemapRT, Color.black, true);