add depth fill pass

Author: z3y

Editor/Generation/ShaderBuilder.cs

@@ -535,6 +535,10 @@ public static void AppendTags(ShaderStringBuilder sb, Dictionary<string, string>
 
         private void AppendPasses()
         {
+            if (ShaderGraphView.graphData.depthFillPass)
+            {
+                _sb.AppendLine("Pass { ZWrite On ColorMask 0 }");
+            }
             if (grabpass && SupportsGrabpas)
             {
                 _sb.AppendLine("GrabPass { Tags { \"LightMode\" = \"GrabPass\" } \"_CameraOpaqueTexture\" }");

Editor/Generation/TemplateOutput.cs

@@ -64,6 +64,11 @@ public override void AdditionalElements(VisualElement root)
             var outline = new EnumField("Outline Pass", graphData.outlinePass);
             outline.RegisterValueChangedCallback(x => graphData.outlinePass = (GraphData.OutlinePassMode)x.newValue);
             root.Add(outline);
+            
+            // https://github.com/pema99/shader-knowledge/blob/main/tips-and-tricks.md#avoiding-draw-order-issues-with-transparent-shaders
+            var depthFill = new Toggle("Depth Fill Pass") { value = graphData.depthFillPass, tooltip = "Avoid draw order issues with transparent shaders" };
+            depthFill.RegisterValueChangedCallback(x => graphData.depthFillPass = x.newValue);
+            root.Add(depthFill);
 
             var stencil = new Toggle("Stencil") { value = graphData.stencil };
             stencil.RegisterValueChangedCallback(x => graphData.stencil = x.newValue);

Editor/Serialization/GraphData.cs

@@ -14,6 +14,7 @@ public class GraphData
         public string fallback = string.Empty;
         public string include = string.Empty;
         public OutlinePassMode outlinePass = OutlinePassMode.Disabled;
+        public bool depthFillPass = false;
         public bool stencil = false;
         public VRCFallbackTags vrcFallbackTags = new VRCFallbackTags();
         public bool unlocked = false;