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Assets/ScriptableRenderPipeline/HDRenderPipeline/Lighting/LightDefinition.cs

     public struct DirectionalLightData
     {
         public Vector3 positionWS;
-        public float unused;
+        public bool tileCookie;
 
         public Vector3 color;
         public int shadowIndex; // -1 if unused

Assets/ScriptableRenderPipeline/HDRenderPipeline/Lighting/TilePass/TilePassLoop.hlsl

             float3 localDiffuseLighting, localSpecularLighting;
 
             EvaluateBSDF_Directional(context, V, posInput, prelightData,
-                                     GPULIGHTTYPE_DIRECTIONAL, _DirectionalLightDatas[i], bsdfData,
+                                     _DirectionalLightDatas[i], bsdfData,
                                      localDiffuseLighting, localSpecularLighting);
 
             diffuseLighting += localDiffuseLighting;
         float3 localDiffuseLighting, localSpecularLighting;
 
         EvaluateBSDF_Directional(context, V, posInput, prelightData,
-                                 GPULIGHTTYPE_DIRECTIONAL, _DirectionalLightDatas[i], bsdfData,
+                                 _DirectionalLightDatas[i], bsdfData,
                                  localDiffuseLighting, localSpecularLighting);
 
         diffuseLighting += localDiffuseLighting;

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Lit.hlsl

 
 void EvaluateBSDF_Directional(LightLoopContext lightLoopContext,
                               float3 V, PositionInputs posInput, PreLightData preLightData,
-                              int lightType, DirectionalLightData lightData, BSDFData bsdfData,
+                              DirectionalLightData lightData, BSDFData bsdfData,
-    // Compute the NDC position (in [-1, 1]^2) by projecting 'positionWS' onto the near plane.
-    // 'lightData.right' and 'lightData.up' are pre-scaled on CPU.
-    float3   lightToSurface = positionWS - lightData.positionWS;
-    float3x3 lightToWorld   = float3x3(lightData.right, lightData.up, lightData.forward);
-    float3   positionLS     = mul(lightToSurface, transpose(lightToWorld));
-    float2   positionNDC    = positionLS.xy;
-
-    // Clip only box projector lights.
-    float clipFactor = 1;
-
-    // Static branch.
-    if (lightType == GPULIGHTTYPE_PROJECTOR_BOX)
-    {
-        // bool  isInBounds = max(abs(positionNDC.x), abs(positionNDC.y)) <= 1 && positionLS.z >= 0;
-        // float clipFactor = isInBounds ? 1 : 0;
-        // This version is slightly more efficient:
-        float clipFactor = saturate(FLT_MAX - FLT_MAX * Max3(abs(positionNDC.x), abs(positionNDC.y), positionLS.z >= 0 ? 0 : 1));
-    }
-
-    float attenuation = clipFactor;
-
-    float illuminance = saturate(NdotL * attenuation);
+    float illuminance = saturate(NdotL);
 
     diffuseLighting  = float3(0, 0, 0); // TODO: check whether using 'out' instead of 'inout' increases the VGPR pressure
     specularLighting = float3(0, 0, 0); // TODO: check whether using 'out' instead of 'inout' increases the VGPR pressure
 
     [branch] if (lightData.cookieIndex >= 0)
     {
+        // Compute the NDC position (in [-1, 1]^2) by projecting 'positionWS' onto the near plane.
+        // 'lightData.right' and 'lightData.up' are pre-scaled on CPU.
+        float3   lightToSurface = positionWS - lightData.positionWS;
+
+        float3x3 lightToWorld = float3x3(lightData.right, lightData.up, lightData.forward);
+        float3   positionLS = mul(lightToSurface, transpose(lightToWorld));
+        float2   positionNDC = positionLS.xy;
+
+        float clipFactor = 1.0f;
+
+        if (lightData.tileCookie)
+        {
+            // Tile the texture if the 'repeat' wrap mode is enabled.
+            coord = frac(coord);
+        }
+        else
+        {
+            // bool  isInBounds = max(abs(positionNDC.x), abs(positionNDC.y)) <= 1 && positionLS.z >= 0;
+            // float clipFactor = isInBounds ? 1 : 0;
+            // This version is slightly more efficient:
+            clipFactor = saturate(FLT_MAX - FLT_MAX * Max3(abs(positionNDC.x), abs(positionNDC.y), positionLS.z >= 0 ? 0 : 1));
+        }
+
-        cookie = c.rgb * c.a;
+        cookie = c.rgb * c.a * clipFactor;
     }
 
     [branch] if (illuminance > 0.0)