Add Graphics::SpreadWorkload to disable graphics workloads amortization over several frames when debugging graphics perf

Source/Engine/Graphics/Graphics.cpp

@@ -22,6 +22,7 @@ bool Graphics::AllowCSMBlending = false;
 Quality Graphics::GlobalSDFQuality = Quality::High;
 Quality Graphics::GIQuality = Quality::High;
 PostProcessSettings Graphics::PostProcessSettings;
+bool Graphics::SpreadWorkload = true;
 
 #if GRAPHICS_API_NULL
 extern GPUDevice* CreateGPUDeviceNull();

Source/Engine/Graphics/Graphics.h

@@ -69,9 +69,22 @@ public:
     /// </summary>
     API_FIELD() static PostProcessSettings PostProcessSettings;
 
+public:
+    /// <summary>
+    /// Debug utility to toggle graphics workloads amortization over several frames by systems such as shadows mapping, global illumination or surface atlas. Can be used to test performance in the worst-case scenario (eg. camera-cut).
+    /// </summary>
+    API_FIELD() static bool SpreadWorkload;
+
 public:
     /// <summary>
     /// Disposes the device.
     /// </summary>
     static void DisposeDevice();
 };
+
+// Skip disabling workload spreading in Release builds
+#if BUILD_RELEASE
+#define GPU_SPREAD_WORKLOAD true
+#else
+#define GPU_SPREAD_WORKLOAD Graphics::SpreadWorkload
+#endif