[unity] Update example materials.

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: []

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: []

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: []

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: []

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: []

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: []

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}

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: []

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}

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: []

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}