Misc performance tweaks (#4509)

* use Array.Empty() where instead of allocating new zero-length arrays

* structure for loops in a way that the JIT will elide array/Span bounds checking

* avoiding function calls in for loop condition tests

* avoid LINQ in a hot path

* conform with code style

* fix mistake in GetNextWaitingObject()

* fix GetNextWaitingObject() possibility of returning null if all list items have TimePoint == long.MaxValue

* make GetNextWaitingObject() behave FIFO behavior for multiple items with the same TimePoint

1 files changed, 2 insertions, 3 deletions

diff --git a/Ryujinx.Graphics.Vulkan/Window.cs b/Ryujinx.Graphics.Vulkan/Window.cs
index 5d6def3a..075d1b30 100644
--- a/Ryujinx.Graphics.Vulkan/Window.cs
+++ b/Ryujinx.Graphics.Vulkan/Window.cs
@@ -60,10 +60,9 @@ namespace Ryujinx.Graphics.Vulkan
         private void RecreateSwapchain()
         {
             var oldSwapchain = _swapchain;
-            int imageCount = _swapchainImageViews.Length;
             _vsyncModeChanged = false;
 
-            for (int i = 0; i < imageCount; i++)
+            for (int i = 0; i < _swapchainImageViews.Length; i++)
             {
                 _swapchainImageViews[i].Dispose();
             }
@@ -147,7 +146,7 @@ namespace Ryujinx.Graphics.Vulkan
 
             _swapchainImageViews = new Auto<DisposableImageView>[imageCount];
 
-            for (int i = 0; i < imageCount; i++)
+            for (int i = 0; i < _swapchainImageViews.Length; i++)
             {
                 _swapchainImageViews[i] = CreateSwapchainImageView(_swapchainImages[i], surfaceFormat.Format);
             }