diff --git a/doc/contributions.txt b/doc/contributions.txt
index af8b259c74..2fbe8ab7cc 100755
--- a/doc/contributions.txt
+++ b/doc/contributions.txt
@@ -596,6 +596,7 @@ Henri Beauchamp
 	SL-15175
 	SL-19110
 	SL-19159
+	[NO JIRA] (fullbright HUD alpha fix)
 herina Bode
 Hikkoshi Sakai
 	VWR-429
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index 8b2a69b924..a6fab10791 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -76,9 +76,9 @@ void main()
 
     vec3 pos = vary_position;
 
+    color.a = final_alpha;
 #ifndef IS_HUD
     color.rgb = srgb_to_linear(color.rgb);
-    color.a = final_alpha;
 #ifdef IS_ALPHA
 
     vec3 sunlit;
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 553eaaf9b2..9db9d97ddc 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -787,6 +787,10 @@ U32 render_type_from_string(std::string render_type)
 	{
 		return LLPipeline::RENDER_TYPE_BUMP;
 	}
+    else if ("pbr" == render_type) 
+    {
+        return LLPipeline::RENDER_TYPE_GLTF_PBR;
+    }
 	else
 	{
 		return 0;
diff --git a/indra/newview/skins/default/xui/en/menu_viewer.xml b/indra/newview/skins/default/xui/en/menu_viewer.xml
index 2c4b03251a..660f4b62c7 100644
--- a/indra/newview/skins/default/xui/en/menu_viewer.xml
+++ b/indra/newview/skins/default/xui/en/menu_viewer.xml
@@ -2162,6 +2162,16 @@ function="World.EnvPreset"
                  function="Advanced.ToggleRenderType"
                  parameter="bump" />
             </menu_item_check>
+            <menu_item_check
+             label="PBR"
+             name="Rendering Type PBR">
+                <menu_item_check.on_check
+                 function="Advanced.CheckRenderType"
+                 parameter="pbr" />
+                <menu_item_check.on_click
+                 function="Advanced.ToggleRenderType"
+                 parameter="pbr" />
+            </menu_item_check>
         </menu>
         <menu
          create_jump_keys="true"