Fix projector light dimensions

Assets/ScriptableRenderPipeline/HDRenderPipeline/Lighting/TilePass/TilePass.cs

                     Vector3 zAxisVS = worldToView.MultiplyVector(lightData.forward);
 
                     // Projector lights point forwards (along Z). The projection window is aligned with the XY plane.
-                    Vector3 boxDims     = new Vector3(lightData.size.x, lightData.size.y, 1000000.0f);
+                    Vector3 boxDims  = new Vector3(lightData.size.x, lightData.size.y, 1000000.0f);
+                    Vector3 halfDims = 0.5f * boxDims;
-                    bound.boxAxisX = boxDims.x * xAxisVS;                                                   // Should this be halved or not?
-                    bound.boxAxisY = boxDims.y * yAxisVS;                                                   // Should this be halved or not?
-                    bound.boxAxisZ = boxDims.z * zAxisVS;                                                   // Should this be halved or not?
-                    bound.radius   = 0.5f * boxDims.magnitude;                                              // Radius of a circumscribed sphere?
+                    bound.boxAxisX = halfDims.x * xAxisVS;                                                    // Should this be halved or not?
+                    bound.boxAxisY = halfDims.y * yAxisVS;                                                    // Should this be halved or not?
+                    bound.boxAxisZ = halfDims.z * zAxisVS;                                                    // Should this be halved or not?
+                    bound.radius   = halfDims.magnitude;                                                      // Radius of a circumscribed sphere?
-                    lightVolumeData.lightPos   = posVS;                                                     // Is this the center of the volume?
-                    lightVolumeData.lightAxisX = xAxisVS;
-                    lightVolumeData.lightAxisY = yAxisVS;
-                    lightVolumeData.lightAxisZ = zAxisVS;
-                    lightVolumeData.boxInnerDist = boxDims * 0.5f;                                          // No idea what this is. Document your code
-                    lightVolumeData.boxInvRange.Set(1.0f / boxDims.x, 1.0f / boxDims.y, 1.0f / boxDims.z);  // No idea what this is. Document your code
+                    lightVolumeData.lightPos     = posVS;                                                     // Is this the center of the volume?
+                    lightVolumeData.lightAxisX   = xAxisVS;
+                    lightVolumeData.lightAxisY   = yAxisVS;
+                    lightVolumeData.lightAxisZ   = zAxisVS;
+                    lightVolumeData.boxInnerDist = halfDims;                                                  // No idea what this is. Document your code
+                    lightVolumeData.boxInvRange.Set(1.0f / halfDims.x, 1.0f / halfDims.y, 1.0f / halfDims.z); // No idea what this is. Document your code
                     lightVolumeData.featureFlags = LightFeatureFlags.FEATURE_FLAG_LIGHT_PROJECTOR;
                 }
                 else

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

     float distY = dot(unL, lightData.up);
 
     // Compute windowing factors using the dimensions of the light's "viewport".
-    float windowX = (abs(distX) <= lightData.size.x) ? 1 : 0;
-    float windowY = (abs(distY) <= lightData.size.y) ? 1 : 0;
+    float windowX = (abs(distX) <= 0.5 * lightData.size.x) ? 1 : 0;
+    float windowY = (abs(distY) <= 0.5 * lightData.size.y) ? 1 : 0;
 
     float illuminance = saturate(dot(bsdfData.normalWS, L) * (windowX * windowY));
 

Assets/TestScenes/HDTest/HDRenderLoopTest.unity

   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1085128921}
   m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
-  m_LocalPosition: {x: -0.3, y: 0, z: -2.0000005}
+  m_LocalPosition: {x: -0.0514, y: 0.39, z: -2}
   m_LocalScale: {x: 1, y: 1, z: 1.0000005}
   m_Children: []
   m_Father: {fileID: 2026378394}
   affectDiffuse: 1
   affectSpecular: 1
   archetype: 2
-  isDoubleSided: 1
+  isDoubleSided: 0
   lightLength: 3
   lightWidth: 2
 --- !u!108 &1879857774
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1879857772}
   m_LocalRotation: {x: 0.000000059604645, y: 0, z: -0, w: 1}
-  m_LocalPosition: {x: -0.31449968, y: -0.34166676, z: -2.5199997}
+  m_LocalPosition: {x: -0.3023, y: -0.2512, z: -2.904}
   m_LocalScale: {x: 0.05, y: 0.08333334, z: 1}
   m_Children: []
   m_Father: {fileID: 2026378394}