diff --git a/src/BizHawk.Bizware.Graphics/Renderers/ImGui2DRenderer.cs b/src/BizHawk.Bizware.Graphics/Renderers/ImGui2DRenderer.cs
index 5a25ad7b8f..cbbff14faf 100644
--- a/src/BizHawk.Bizware.Graphics/Renderers/ImGui2DRenderer.cs
+++ b/src/BizHawk.Bizware.Graphics/Renderers/ImGui2DRenderer.cs
@@ -512,7 +512,7 @@ namespace BizHawk.Bizware.Graphics
 
 		public unsafe void DrawPolygon(Color color, Point[] points)
 		{
-			var vectorPoints = Array.ConvertAll(points, static p => p.ToVector());
+			var vectorPoints = Array.ConvertAll(points, static p => new Vector2(p.X + 0.5f, p.Y + 0.5f));
 			fixed (Vector2* p = vectorPoints)
 			{
 				_imGuiDrawList.AddPolyline(
@@ -526,7 +526,7 @@ namespace BizHawk.Bizware.Graphics
 
 		public unsafe void FillPolygon(Color color, Point[] points)
 		{
-			var vectorPoints = Array.ConvertAll(points, static p => p.ToVector());
+			var vectorPoints = Array.ConvertAll(points, static p => new Vector2(p.X + 0.5f, p.Y + 0.5f));
 			fixed (Vector2* p = vectorPoints)
 			{
 				_imGuiDrawList.AddConcavePolyFilled(