diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon.mat
index afe2ac7f2..367d88d06 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon2.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon2.mat
index 53e0ab476..0694b83dd 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon2.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/Dragon/dragon_dragon2.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/Eyes/eyes_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/Eyes/eyes_Material.mat
index 3bd4acb92..8e3913b56 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/Eyes/eyes_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/Eyes/eyes_Material.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/Equipment/Equipment_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/Equipment/Equipment_Material.mat
index 4f13dcbab..1588749c2 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/Equipment/Equipment_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/Equipment/Equipment_Material.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/FS_White_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/FS_White_Material.mat
index 10a8e03e6..498848cc8 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/FS_White_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/FootSoldier/FS_White_Material.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/Gauge/Gauge_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/Gauge/Gauge_Material.mat
index 2649ff10d..7cccdb634 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/Gauge/Gauge_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/Gauge/Gauge_Material.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/Goblins/goblins_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/Goblins/goblins_Material.mat
index 49dcc1e07..76ee21f4d 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/Goblins/goblins_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/Goblins/goblins_Material.mat	
@@ -24,6 +24,7 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors:
     - _Black: {r: 1, g: 0, b: 0, a: 1}
     - _Color: {r: 1, g: 1, b: 1, a: 1}
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/Raggedy Spineboy/Raggedy Spineboy_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/Raggedy Spineboy/Raggedy Spineboy_Material.mat
index 062647744..18c584648 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/Raggedy Spineboy/Raggedy Spineboy_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/Raggedy Spineboy/Raggedy Spineboy_Material.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/Raptor/raptor_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/Raptor/raptor_Material.mat
index 418a14f81..b291eb89b 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/Raptor/raptor_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/Raptor/raptor_Material.mat	
@@ -24,6 +24,7 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors:
     - _Black: {r: 0, g: 0, b: 0, a: 0}
     - _Color: {r: 1, g: 1, b: 1, a: 1}
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-pro/spineboy-pro_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-pro/spineboy-pro_Material.mat
index 9d639058a..0a9ccec76 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-pro/spineboy-pro_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-pro/spineboy-pro_Material.mat	
@@ -24,4 +24,5 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Floats:
     - _Cutoff: 0.1
+    - _StraightAlphaInput: 0
     m_Colors: []
diff --git a/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-unity/spineboy_Material.mat b/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-unity/spineboy_Material.mat
index 89ba93e92..245d684e9 100644
--- a/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-unity/spineboy_Material.mat	
+++ b/spine-unity/Assets/Spine Examples/Spine Skeletons/spineboy-unity/spineboy_Material.mat	
@@ -28,6 +28,7 @@ Material:
     - _Cutoff: 0.1
     - _FillPhase: 0
     - _RefractionStrength: 0.01
+    - _StraightAlphaInput: 0
     - _node_3476: 0
     m_Colors:
     - _Black: {r: 0, g: 0, b: 0, a: 0}