Add various minor improvements

Source/Editor/Surface/VisjectSurface.Input.cs

@@ -120,6 +120,8 @@ namespace FlaxEditor.Surface
 
         private void UpdateSelectionRectangle()
         {
+            if (Root == null)
+                return;
             var p1 = _rootControl.PointFromParent(ref _leftMouseDownPos);
             var p2 = _rootControl.PointFromParent(ref _mousePos);
             var selectionRect = Rectangle.FromPoints(p1, p2);

Source/Engine/Physics/Actors/WheeledVehicle.cpp

@@ -191,7 +191,7 @@ void WheeledVehicle::SetThrottle(float value)
     _throttle = Math::Clamp(value, -1.0f, 1.0f);
 }
 
-float WheeledVehicle::GetThrottle()
+float WheeledVehicle::GetThrottle() const
 {
     return _throttle;
 }

Source/Engine/Physics/Actors/WheeledVehicle.h

@@ -545,7 +545,7 @@ public:
     /// Get the vehicle throttle. It is the analog accelerator pedal value in range (0,1) where 1 represents the pedal fully pressed and 0 represents the pedal in its rest state.
     /// </summary>
     /// <returns>The vehicle throttle.</returns>
-    API_FUNCTION() float GetThrottle();
+    API_FUNCTION() float GetThrottle() const;
 
     /// <summary>
     /// Sets the input for vehicle steering. Steer is the analog steer value in range (-1,1) where -1 represents the steering wheel at left lock and +1 represents the steering wheel at right lock.

Source/Engine/Physics/PhysX/PhysicsBackendPhysX.cpp

@@ -496,7 +496,9 @@ protected:
 #define PxHitFlagEmpty (PxHitFlags)0
 #define SCENE_QUERY_FLAGS (PxHitFlag::ePOSITION | PxHitFlag::eNORMAL | PxHitFlag::eFACE_INDEX | PxHitFlag::eUV)
 
-#define SCENE_QUERY_SETUP(blockSingle) auto scenePhysX = (ScenePhysX*)scene; if (scene == nullptr) return false; \
+#define SCENE_QUERY_SETUP(blockSingle) PROFILE_CPU(); \
+        auto scenePhysX = (ScenePhysX*)scene; \
+        if (scene == nullptr) return false; \
 		PxQueryFilterData filterData; \
 		filterData.flags |=  PxQueryFlag::ePREFILTER; \
 		filterData.data.word0 = layerMask; \

Source/Engine/Renderer/ColorGradingPass.cpp

@@ -194,6 +194,7 @@ GPUTexture* ColorGradingPass::RenderLUT(RenderContext& renderContext)
     // Check if LUT parameter hasn't been changed since the last time
     if (Platform::MemoryCompare(&colorGradingBuffer.CachedData , &data, sizeof(Data)) == 0 &&
         colorGradingBuffer.Mode == toneMapping.Mode &&
+        Engine::FrameCount > 30 && // Skip caching when engine is starting TODO: find why this hack is needed
         colorGradingBuffer.LutTexture == lutTexture)
     {
         // Resue existing texture

Source/Engine/Renderer/PostProcessingPass.cpp

@@ -367,15 +367,19 @@ void PostProcessingPass::Render(RenderContext& renderContext, GPUTexture* input,
     // Bloom
 
     auto tempDesc = GPUTextureDescription::New2D(w2, h2, bloomMipCount, output->Format(), GPUTextureFlags::ShaderResource | GPUTextureFlags::RenderTarget | GPUTextureFlags::PerMipViews);
-    auto bloomBuffer1 = RenderTargetPool::Get(tempDesc);
+    GPUTexture* bloomBuffer1 = nullptr, *bloomBuffer2 = nullptr;
-    RENDER_TARGET_POOL_SET_NAME(bloomBuffer1, "PostProcessing.Bloom");
+    if (useBloom || useLensFlares)
-    auto bloomBuffer2 = RenderTargetPool::Get(tempDesc);
-    RENDER_TARGET_POOL_SET_NAME(bloomBuffer2, "PostProcessing.Bloom");
-
-    for (int32 mip = 0; mip < bloomMipCount; mip++)
     {
-        context->Clear(bloomBuffer1->View(0, mip), Color::Transparent);
+        bloomBuffer1 = RenderTargetPool::Get(tempDesc);
-        context->Clear(bloomBuffer2->View(0, mip), Color::Transparent);
+        bloomBuffer2 = RenderTargetPool::Get(tempDesc);
+        RENDER_TARGET_POOL_SET_NAME(bloomBuffer1, "PostProcessing.Bloom");
+        RENDER_TARGET_POOL_SET_NAME(bloomBuffer2, "PostProcessing.Bloom");
+
+        for (int32 mip = 0; mip < bloomMipCount; mip++)
+        {
+            context->Clear(bloomBuffer1->View(0, mip), Color::Transparent);
+            context->Clear(bloomBuffer2->View(0, mip), Color::Transparent);
+        }
     }
 
     if (useBloom)

Source/Shaders/PostProcessing.shader

@@ -650,7 +650,7 @@ float4 PS_Composite(Quad_VS2PS input) : SV_Target
 	}
 	else
 	{
-		color = Input0.Sample(SamplerLinearClamp, uv);
+		color = Input0.Sample(SamplerPointClamp, uv);
 	}
 
 	// Lens Flares