diff --git a/OpenRA.Game/Graphics/WorldRenderer.cs b/OpenRA.Game/Graphics/WorldRenderer.cs
index ad1ae41cdd..80eaad3a3f 100644
--- a/OpenRA.Game/Graphics/WorldRenderer.cs
+++ b/OpenRA.Game/Graphics/WorldRenderer.cs
@@ -244,17 +244,28 @@ namespace OpenRA.Graphics
 		}
 
 		// For scaling vectors to pixel sizes in the voxel renderer
-		public float[] ScreenVector(WVec vec)
+		public void ScreenVectorComponents(WVec vec, out float x, out float y, out float z)
 		{
 			var ts = Game.ModData.Manifest.TileSize;
-			return new float[] { ts.Width * vec.X / 1024f, ts.Height * vec.Y / 1024f, ts.Height * vec.Z / 1024f, 1 };
+			x = ts.Width * vec.X / 1024f;
+			y = ts.Height * vec.Y / 1024f;
+			z = ts.Height * vec.Z / 1024f;
+		}
+
+		// For scaling vectors to pixel sizes in the voxel renderer
+		public float[] ScreenVector(WVec vec)
+		{
+			float x, y, z;
+			ScreenVectorComponents(vec, out x, out y, out z);
+			return new[] { x, y, z, 1f };
 		}
 
 		public int2 ScreenPxOffset(WVec vec)
 		{
 			// Round to nearest pixel
-			var px = ScreenVector(vec);
-			return new int2((int)Math.Round(px[0]), (int)Math.Round(px[1] - px[2]));
+			float x, y, z;
+			ScreenVectorComponents(vec, out x, out y, out z);
+			return new int2((int)Math.Round(x), (int)Math.Round(y - z));
 		}
 
 		public float ScreenZPosition(WPos pos, int offset)
diff --git a/OpenRA.Mods.Common/Graphics/VoxelRenderable.cs b/OpenRA.Mods.Common/Graphics/VoxelRenderable.cs
index 8c5810c1af..06e9375541 100644
--- a/OpenRA.Mods.Common/Graphics/VoxelRenderable.cs
+++ b/OpenRA.Mods.Common/Graphics/VoxelRenderable.cs
@@ -151,8 +151,9 @@ namespace OpenRA.Mods.Common.Graphics
 					var worldTransform = v.RotationFunc().Reverse().Aggregate(scaleTransform,
 						(x, y) => Util.MatrixMultiply(x, Util.MakeFloatMatrix(y.AsMatrix())));
 
-					var pxOffset = wr.ScreenVector(v.OffsetFunc());
-					var pxPos = pxOrigin + new float2(pxOffset[0], pxOffset[1]);
+					float sx, sy, sz;
+					wr.ScreenVectorComponents(v.OffsetFunc(), out sx, out sy, out sz);
+					var pxPos = pxOrigin + new float2(sx, sy);
 					var screenTransform = Util.MatrixMultiply(cameraTransform, worldTransform);
 					DrawBoundsBox(pxPos, screenTransform, bounds, Color.Yellow);
 				}
@@ -204,8 +205,9 @@ namespace OpenRA.Mods.Common.Graphics
 					var worldTransform = v.RotationFunc().Reverse().Aggregate(scaleTransform,
 						(x, y) => Util.MatrixMultiply(x, Util.MakeFloatMatrix(y.AsMatrix())));
 
-					var pxOffset = wr.ScreenVector(v.OffsetFunc());
-					var pxPos = pxOrigin + new float2(pxOffset[0], pxOffset[1]);
+					float sx, sy, sz;
+					wr.ScreenVectorComponents(v.OffsetFunc(), out sx, out sy, out sz);
+					var pxPos = pxOrigin + new float2(sx, sy);
 					var screenTransform = Util.MatrixMultiply(cameraTransform, worldTransform);
 
 					for (var i = 0; i < 8; i++)