Cleaned up and commented version.

2025-10-02 00:07:11 +02:00
parent 2b86d9f0a2
commit 4c613c3436
66 changed files with 260 additions and 1020 deletions
@@ -0,0 +1,84 @@
+using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEngine.Rendering.Universal;
+using UnityEngine.Rendering.RenderGraphModule;
+
+// Render Feature, das den Sichtkegel mit fovealem und peripherem Bereich darstellt und pro Kamera aktiviert werden kann.
+public class GazeOverlayRendererFeature : ScriptableRendererFeature
+{
+    public sealed class GazeRenderPass : ScriptableRenderPass
+    {
+        internal Vector3 gazeOrigin;
+        internal Vector3 gazeDirection;
+        internal float foveaHalfRad = Mathf.Deg2Rad * 2.5f; // für 5° fovealer Bereich
+        internal float periHalfRad = Mathf.Deg2Rad * 10f; // für 20° peripheren Bereich
+
+        static readonly int gazeOriginID = Shader.PropertyToID("_GazeOrigin");
+        static readonly int gazeDirectionID = Shader.PropertyToID("_GazeDirection");
+        static readonly int foveaHalfRadID = Shader.PropertyToID("_FoveaAngle");
+        static readonly int periHalfRadID = Shader.PropertyToID("_PeriAngle");
+
+        readonly Material gazeMaterial;
+
+        public GazeRenderPass(Material material) => gazeMaterial = material;
+
+        public override void RecordRenderGraph(RenderGraph renderGraph, ContextContainer frameData)
+        {
+            Debug.Log("RecordRenderGraph");
+            var resourceData = frameData.Get<UniversalResourceData>();
+            TextureHandle depth = resourceData.activeDepthTexture;
+            TextureHandle color = resourceData.activeColorTexture;
+
+            using var builder = renderGraph.AddRasterRenderPass<PassData>("GazeOverlay", out var passData);
+
+            passData.depth = depth;
+            passData.color = color;
+            passData.gazeMaterial = gazeMaterial;
+            passData.gazeOrigin = gazeOrigin;
+            passData.gazeDirection = gazeDirection;
+            passData.foveaHalfRad = foveaHalfRad;
+            passData.periHalfRad = periHalfRad;
+
+            builder.UseTexture(depth, AccessFlags.Read);
+            builder.UseTexture(color, AccessFlags.ReadWrite);
+            builder.SetRenderAttachment(color, 0);
+
+            builder.SetRenderFunc((PassData data, RasterGraphContext ctx) =>
+            {
+                ctx.cmd.ClearRenderTarget(RTClearFlags.Color, new Color(1, 0, 1, 1), 1.0f, 0);
+                //ctx.cmd.SetGlobalVector(gazeOriginID, data.gazeOrigin);
+                //ctx.cmd.SetGlobalVector(gazeDirectionID, data.gazeDirection);
+                //ctx.cmd.SetGlobalFloat(foveaHalfRadID, data.foveaHalfRad);
+                //ctx.cmd.SetGlobalFloat(periHalfRadID, data.periHalfRad);
+
+                //Blitter.BlitTexture(ctx.cmd, data.depth, new Vector4(1, 1, 0, 0),
+                    //data.gazeMaterial, 0);
+            });
+        }
+
+        class PassData
+        {
+            internal TextureHandle depth;
+            internal TextureHandle color;
+            internal Material gazeMaterial;
+            internal Vector3 gazeOrigin, gazeDirection;
+            internal float foveaHalfRad, periHalfRad;
+        }
+    }
+
+    [SerializeField] Material gazeOverlayMaterial;
+    GazeRenderPass pass;
+
+    public GazeRenderPass GetPass() {  return pass; }
+
+    public override void Create()
+    {
+        pass = new GazeRenderPass(gazeOverlayMaterial);
+        Debug.Log("Feature created");
+    }
+
+    public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
+    {
+        renderer.EnqueuePass(pass);
+    }
+}