Bind volume programs to authoritative document time

packages/org.gamecult.eve.unity-scene/README.md

@@ -75,3 +75,7 @@ native scene and the provider volume through the same camera pipeline.
 Providers may advertise per-layer resolution scales, mipmap use, and filtering
 through `layerTargetDescriptors`; the Unity lowerer applies those native target
 requirements without assigning gameplay or product meaning to the layer keys.
+`documentFloatBindings` maps standard document scalars to logical float ports as
+`source=port,scale,offset`. This lets animated native programs consume
+provider-authoritative simulation time without making the client clock an
+authority.

packages/org.gamecult.eve.unity-scene/Runtime/Fields/EveUnityFieldsVolumeRenderer.cs

@@ -237,6 +237,48 @@ namespace GameCult.Eve.UnityScene.Fields
                 (float)((viewport.MinY + viewport.MaxY) * 0.5),
                 (float)width,
                 (float)height));
+            foreach (var binding in ParseBindings(Prop(field, "documentFloatBindings")))
+            {
+                if (TryEvaluateDocumentFloatBinding(
+                        document,
+                        binding.Key,
+                        binding.Value,
+                        out var port,
+                        out var value))
+                    SetFloatPort(port, value);
+            }
+        }
+
+        public static bool TryEvaluateDocumentFloatBinding(
+            EveFieldsSplatsDocument? document,
+            string source,
+            string descriptor,
+            out string port,
+            out float value)
+        {
+            port = "";
+            value = 0f;
+            if (document == null) return false;
+            var values = (descriptor ?? "").Split(',');
+            if (values.Length != 3 ||
+                string.IsNullOrWhiteSpace(values[0]) ||
+                !TryFloat(values[1].Trim(), out var scale) ||
+                !TryFloat(values[2].Trim(), out var offset))
+                return false;
+
+            double sourceValue;
+            switch ((source ?? "").Trim())
+            {
+                case "simulationTimeSeconds":
+                    sourceValue = document.SimulationTimeSeconds;
+                    break;
+                default:
+                    return false;
+            }
+
+            port = values[0].Trim();
+            value = (float)(sourceValue * scale + offset);
+            return float.IsFinite(value);
         }
 
         private void EnsureTargets(EveUnityFieldVolumeProjection field)

packages/org.gamecult.eve.unity-scene/Tests/Editor/EveFieldsUnitySceneProjectionTests.cs

@@ -137,6 +137,36 @@ namespace GameCult.Eve.UnityScene.Tests
             Assert.That(target.FilterMode, Is.EqualTo(FilterMode.Trilinear));
         }
 
+        [Test]
+        public void VolumeRendererBindsAuthoritativeDocumentTimeToLogicalPort()
+        {
+            var document = new EveFieldsSplatsDocument { SimulationTimeSeconds = 12.5 };
+
+            Assert.That(
+                EveUnityFieldsVolumeRenderer.TryEvaluateDocumentFloatBinding(
+                    document,
+                    "simulationTimeSeconds",
+                    "flowScroll,0.025,-0.1",
+                    out var port,
+                    out var value),
+                Is.True);
+            Assert.That(port, Is.EqualTo("flowScroll"));
+            Assert.That(value, Is.EqualTo(0.2125f).Within(0.00001f));
+        }
+
+        [Test]
+        public void VolumeRendererRejectsUnknownDocumentFloatSource()
+        {
+            Assert.That(
+                EveUnityFieldsVolumeRenderer.TryEvaluateDocumentFloatBinding(
+                    new EveFieldsSplatsDocument(),
+                    "unityTime",
+                    "flowScroll,1,0",
+                    out _,
+                    out _),
+                Is.False);
+        }
+
         [Test]
         public void PackageContainsGenericFieldsShader()
         {

packages/org.gamecult.eve.unity-scene/package.json

@@ -1,7 +1,7 @@
 {
     "name": "org.gamecult.eve.unity-scene",
     "displayName": "Eve Unity Scene Lowering",
-    "version": "0.3.47",
+    "version": "0.3.48",
     "unity": "6000.0",
     "description": "Provider-agnostic Unity scene shell for gamecult.eve.surface.v1 interactive world surfaces.",
     "dependencies": {