Implement female uniform masking.

Content.Client/GameObjects/Components/Clothing/ClothingComponent.cs

@@ -4,6 +4,7 @@ using Content.Shared.GameObjects.Components.Inventory;
 using Content.Shared.GameObjects.Components.Items;
 using Robust.Client.Graphics;
 using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
 namespace Content.Client.GameObjects.Components.Clothing
@@ -12,6 +13,7 @@ namespace Content.Client.GameObjects.Components.Clothing
     [ComponentReference(typeof(ItemComponent))]
     public class ClothingComponent : ItemComponent
     {
+        private FemaleClothingMask _femaleMask;
         public override string Name => "Clothing";
         public override uint? NetID => ContentNetIDs.CLOTHING;
         public override Type StateType => typeof(ClothingComponentState);
@@ -19,6 +21,20 @@ namespace Content.Client.GameObjects.Components.Clothing
         [ViewVariables(VVAccess.ReadWrite)]
         public string ClothingEquippedPrefix { get; set; }
 
+        [ViewVariables(VVAccess.ReadWrite)]
+        public FemaleClothingMask FemaleMask
+        {
+            get => _femaleMask;
+            set => _femaleMask = value;
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref _femaleMask, "femaleMask", FemaleClothingMask.UniformFull);
+        }
+
         public (RSI rsi, RSI.StateId stateId)? GetEquippedStateInfo(EquipmentSlotDefines.SlotFlags slot)
         {
             if (RsiPath == null)
@@ -47,4 +63,11 @@ namespace Content.Client.GameObjects.Components.Clothing
             EquippedPrefix = clothingComponentState.EquippedPrefix;
         }
     }
+
+    public enum FemaleClothingMask
+    {
+        NoMask = 0,
+        UniformFull,
+        UniformTop
+    }
 }

Content.Client/GameObjects/Components/HUD/Inventory/ClientInventoryComponent.cs

@@ -5,6 +5,7 @@ using System.Collections.Generic;
 using System.Linq;
 using Content.Client.GameObjects.Components.Clothing;
 using Content.Shared.GameObjects;
+using Content.Shared.Preferences.Appearance;
 using Robust.Client.GameObjects;
 using Robust.Client.Interfaces.GameObjects.Components;
 using Robust.Shared.GameObjects;
@@ -14,8 +15,6 @@ using Robust.Shared.IoC;
 using Robust.Shared.ViewVariables;
 using static Content.Shared.GameObjects.Components.Inventory.EquipmentSlotDefines;
 using static Content.Shared.GameObjects.SharedInventoryComponent.ClientInventoryMessage;
-using Content.Shared.GameObjects.Components.Inventory;
-using System;
 
 namespace Content.Client.GameObjects
 {
@@ -130,6 +129,17 @@ namespace Content.Client.GameObjects
                     _sprite.LayerSetVisible(slot, true);
                     _sprite.LayerSetRSI(slot, rsi);
                     _sprite.LayerSetState(slot, state);
+
+                    if (slot == Slots.INNERCLOTHING)
+                    {
+                        _sprite.LayerSetState(HumanoidVisualLayers.StencilMask, clothing.FemaleMask switch
+                        {
+                            FemaleClothingMask.NoMask => "female_none",
+                            FemaleClothingMask.UniformTop => "female_top",
+                            _ => "female_full",
+                        });
+                    }
+
                     return;
                 }
             }

Content.Client/GameObjects/Components/Mobs/HumanoidAppearanceComponent.cs

@@ -47,6 +47,8 @@ namespace Content.Client.GameObjects.Components.Mobs
             sprite.LayerSetState(HumanoidVisualLayers.Chest, Sex == Sex.Male ? "human_chest_m" : "human_chest_f");
             sprite.LayerSetState(HumanoidVisualLayers.Head, Sex == Sex.Male ? "human_head_m" : "human_head_f");
 
+            sprite.LayerSetVisible(HumanoidVisualLayers.StencilMask, Sex == Sex.Female);
+
             var hairStyle = Appearance.HairStyleName;
             if (string.IsNullOrWhiteSpace(hairStyle) || !HairStyles.HairStylesMap.ContainsKey(hairStyle))
                 hairStyle = HairStyles.DefaultHairStyle;

Content.Shared/Preferences/Appearance/HumanoidCharacterAppearance.cs

@@ -12,5 +12,6 @@ namespace Content.Shared.Preferences.Appearance
         LHand,
         RLeg,
         LLeg,
+        StencilMask
     }
 }

Resources/Prototypes/Entities/items/clothing/uniforms.yml

@@ -91,6 +91,7 @@
 
   - type: Clothing
     sprite: Clothing/uniform_clown.rsi
+    femaleMask: UniformTop
 
 - type: entity
   parent: UniformBase

Resources/Prototypes/Entities/items/toolbox.yml

@@ -17,7 +17,14 @@
   description: A bright red toolbox, stocked with emergency tools
   components:
   - type: Sprite
-    texture: Objects/Tools/toolbox_r.png
+    layers:
+    - shader: stencilClear
+    - texture: Objects/Tools/wrench.png
+      shader: stencilMask
+
+    - texture: Objects/Tools/toolbox_r.png
+      shader: stencilDraw
+
   - type: Icon
     texture: Objects/Tools/toolbox_r.png
 

Resources/Prototypes/Entities/mobs/human.yml

@@ -58,7 +58,18 @@
       sprite: Mob/human.rsi
       state: human_l_leg
 
+    - shader: stencilClear
+      sprite: Mob/human.rsi
+      state: human_l_leg
+    - shader: stencilMask
+      map: ["enum.HumanoidVisualLayers.StencilMask"]
+      sprite: Mob/masking_helpers.rsi
+      state: female_full
+      visible: false
+
     - map: ["enum.Slots.INNERCLOTHING"]
+      shader: stencilDraw
+
     - map: ["enum.Slots.IDCARD"]
     - map: ["enum.Slots.GLOVES"]
     - map: ["enum.Slots.SHOES"]
@@ -174,7 +185,16 @@
         sprite: Mob/human.rsi
         state: human_l_leg
 
+      - shader: stencilClear
+      - shader: stencilMask
+        map: ["enum.HumanoidVisualLayers.StencilMask"]
+        sprite: Mob/masking_helpers.rsi
+        state: female_full
+        visible: false
+
       - map: ["enum.Slots.INNERCLOTHING"]
+        shader: stencilDraw
+
       - map: ["enum.Slots.IDCARD"]
       - map: ["enum.Slots.GLOVES"]
       - map: ["enum.Slots.SHOES"]

Resources/Prototypes/Shaders/Stencils.yml

@@ -0,0 +1,25 @@
+- type: shader
+  id: stencilClear
+  kind: source
+  path: "/Shaders/stencilclear.swsl"
+  stencil:
+    ref: 0
+    op: Replace
+    func: Always
+
+- type: shader
+  id: stencilMask
+  kind: source
+  path: "/Shaders/stencilmask.swsl"
+  stencil:
+    ref: 1
+    op: Replace
+    func: Always
+
+- type: shader
+  id: stencilDraw
+  kind: canvas
+  stencil:
+    ref: 1
+    op: Keep
+    func: NotEqual

Resources/Shaders/stencilclear.swsl

@@ -0,0 +1,3 @@
+void fragment() {
+    COLOR = vec4(0);
+}

Resources/Shaders/stencilmask.swsl

@@ -0,0 +1,7 @@
+void fragment() {
+    if (texture(TEXTURE, UV).a == 0) {
+        discard; // Discard if no alpha so that there's a hole in the stencil buffer.
+    }
+
+    COLOR = vec4(0);
+}

Resources/Textures/Mob/masking_helpers.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "states": [{"name": "female_full", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "female_top", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}