Fixes for Terrain with Large Worlds usage

Source/Editor/Gizmo/EditorPrimitives.cs

@@ -67,6 +67,7 @@ namespace FlaxEditor.Gizmo
             var renderList = RenderList.GetFromPool();
             var prevList = renderContext.List;
             renderContext.List = renderList;
+            renderContext.View.Pass = DrawPass.GBuffer | DrawPass.Forward;
             try
             {
                 Viewport.DrawEditorPrimitives(context, ref renderContext, target, targetDepth);

Source/Editor/Tools/Terrain/Brushes/Brush.cs

@@ -24,10 +24,11 @@ namespace FlaxEditor.Tools.Terrain.Brushes
         /// <summary>
         /// Gets the brush material for the terrain chunk rendering. It must have domain set to Terrain. Setup material parameters within this call.
         /// </summary>
+        /// <param name="renderContext">The rendering context.</param>
         /// <param name="position">The world-space brush position.</param>
         /// <param name="color">The brush position.</param>
         /// <returns>The ready to render material for terrain chunks overlay on top of the terrain.</returns>
-        public abstract MaterialInstance GetBrushMaterial(ref Vector3 position, ref Color color);
+        public abstract MaterialInstance GetBrushMaterial(ref RenderContext renderContext, ref Vector3 position, ref Color color);
 
         /// <summary>
         /// Loads the brush material from the internal location. It's later cached by the object and reused.

Source/Editor/Tools/Terrain/Brushes/CircleBrush.cs

@@ -97,7 +97,7 @@ namespace FlaxEditor.Tools.Terrain.Brushes
         }
 
         /// <inheritdoc />
-        public override MaterialInstance GetBrushMaterial(ref Vector3 position, ref Color color)
+        public override MaterialInstance GetBrushMaterial(ref RenderContext renderContext, ref Vector3 position, ref Color color)
         {
             var material = CacheMaterial(EditorAssets.TerrainCircleBrushMaterial);
             if (material)
@@ -108,7 +108,7 @@ namespace FlaxEditor.Tools.Terrain.Brushes
                 float falloff = halfSize * Falloff;
                 float radius = halfSize - falloff;
                 material.SetParameterValue("Color", color);
-                material.SetParameterValue("BrushData0", new Float4(position, radius));
+                material.SetParameterValue("BrushData0", new Float4(position - renderContext.View.Origin, radius));
                 material.SetParameterValue("BrushData1", new Float4(falloff, (float)FalloffType, 0, 0));
             }
             return material;

Source/Editor/Tools/Terrain/EditTerrainGizmo.cs

@@ -88,14 +88,14 @@ namespace FlaxEditor.Tools.Terrain
                 var patchCoord = Mode.SelectedPatchCoord;
                 if (!terrain.HasPatch(ref patchCoord) && _planeModel)
                 {
-                    var planeSize = 256.0f;
+                    var planeSize = 100.0f;
                     var patchSize = terrain.ChunkSize * FlaxEngine.Terrain.UnitsPerVertex * FlaxEngine.Terrain.PatchEdgeChunksCount;
-                    Matrix world = Matrix.RotationZ(-Mathf.PiOverTwo) *
+                    Matrix world = Matrix.RotationX(-Mathf.PiOverTwo) *
                                    Matrix.Scaling(patchSize / planeSize) *
                                    Matrix.Translation(patchSize * (0.5f + patchCoord.X), 0, patchSize * (0.5f + patchCoord.Y)) *
                                    Matrix.Scaling(terrain.Scale) *
                                    Matrix.RotationQuaternion(terrain.Orientation) *
-                                   Matrix.Translation(terrain.Position);
+                                   Matrix.Translation(terrain.Position - renderContext.View.Origin);
                     _planeModel.Draw(ref renderContext, _highlightMaterial, ref world);
                 }
 

Source/Editor/Tools/Terrain/PaintTerrainGizmo.cs

@@ -74,7 +74,7 @@ namespace FlaxEditor.Tools.Terrain
             {
                 var brushPosition = Mode.CursorPosition;
                 var brushColor = new Color(1.0f, 0.85f, 0.0f); // TODO: expose to editor options
-                var brushMaterial = Mode.CurrentBrush.GetBrushMaterial(ref brushPosition, ref brushColor);
+                var brushMaterial = Mode.CurrentBrush.GetBrushMaterial(ref renderContext, ref brushPosition, ref brushColor);
                 if (!brushMaterial)
                     return;
 

Source/Editor/Tools/Terrain/SculptTerrainGizmo.cs

@@ -74,7 +74,7 @@ namespace FlaxEditor.Tools.Terrain
             {
                 var brushPosition = Mode.CursorPosition;
                 var brushColor = new Color(1.0f, 0.85f, 0.0f); // TODO: expose to editor options
-                var brushMaterial = Mode.CurrentBrush.GetBrushMaterial(ref brushPosition, ref brushColor);
+                var brushMaterial = Mode.CurrentBrush.GetBrushMaterial(ref renderContext, ref brushPosition, ref brushColor);
                 if (!brushMaterial)
                     return;