Add FPS counter to Visual Mode

thekovic · Feb 11, 2023 · 5b5821e · 5b5821e
1 parent 38064d7
commit 5b5821e
Showing 1 changed file with 27 additions and 0 deletions.
diff --git a/Source/Core/Rendering/Renderer3D.cs b/Source/Core/Rendering/Renderer3D.cs
@@ -104,6 +104,11 @@ internal sealed class Renderer3D : Renderer, IRenderer3D
         // Things to be rendered, sorted by distance from camera
         private BinaryHeap<VisualThing> thingsbydistance;
 
+        // FPS-related
+        private int fps = 0;
+        private System.Diagnostics.Stopwatch fpsWatch;
+        private TextLabel fpsLabel;
+
         #endregion
 
         #region ================== Properties
@@ -135,6 +140,12 @@ internal Renderer3D(D3DDevice graphics) : base(graphics)
             frustum = new ProjectedFrustum2D(new Vector2D(), 0.0f, 0.0f, PROJ_NEAR_PLANE,
                 General.Settings.ViewDistance, Angle2D.DegToRad((float)General.Settings.VisualFOV));
 
+            fpsLabel = new TextLabel(7);
+            fpsLabel.AlignX = TextAlignmentX.Left;
+            fpsLabel.AlignY = TextAlignmentY.Top;
+            fpsLabel.Text = "(FPS unavailable)";
+            fpsWatch = new System.Diagnostics.Stopwatch();
+
             // We have no destructor
             GC.SuppressFinalize(this);
         }
@@ -422,6 +433,11 @@ public void ApplyMatrices2D()
         // This starts rendering
         public bool Start()
         {
+            if (!fpsWatch.IsRunning)
+            {
+                fpsWatch.Start();
+            }
+
             // Create texture
             if (General.Map.Data.ThingBox.Texture == null)
                 General.Map.Data.ThingBox.CreateTexture();
@@ -549,6 +565,15 @@ public void FinishGeometry()
             // Done
             graphics.Shaders.World3D.End();
             geometry = null;
+
+            fps++;
+            if (fpsWatch.ElapsedMilliseconds > 1000)
+            {
+                fpsLabel.Text = string.Format("{0} FPS", fps);
+                fps = 0;
+                fpsWatch.Reset();
+                fpsWatch.Start();
+            }
         }
 
         // villsa 9/15/11
@@ -989,6 +1014,8 @@ public void RenderCrosshair()
             graphics.Device.DrawUserPrimitives<FlatVertex>(PrimitiveType.TriangleStrip, 0, 2, crosshairverts);
             graphics.Shaders.Display2D.EndPass();
             graphics.Shaders.Display2D.End();
+
+            General.Map.Renderer2D.RenderText(fpsLabel);
         }
 
         // This switches fog on and off