From 0812468d0508f04a3890054774668391b27759a4 Mon Sep 17 00:00:00 2001
From: Dmitriy Romanov <dimonasdf@inbox.ru>
Date: Tue, 3 Apr 2018 22:05:13 +0300
Subject: [PATCH] Fix Collada material roughness import function 4

Made import conversion linear.
---
 editor/import/editor_import_collada.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/editor/import/editor_import_collada.cpp b/editor/import/editor_import_collada.cpp
index 282da239cc8..c1e897a04ca 100644
--- a/editor/import/editor_import_collada.cpp
+++ b/editor/import/editor_import_collada.cpp
@@ -480,7 +480,7 @@ Error ColladaImport::_create_material(const String &p_target) {
 		}
 	}
 
-	float roughness = (512.0 * (1.0 - Math::sqrt(1.0 - ((Math::log(effect.shininess) / Math::log(2.0)) / 9.0)))) / 503.0;
+	float roughness = (effect.shininess - 1.0) / 510;
 	material->set_roughness(roughness);
 
 	if (effect.double_sided) {