From 83e8f8cb94bd1a074be0611e27b51f558a1ab348 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Tue, 12 Mar 2024 12:39:01 +0100
Subject: [PATCH] Increase backbuffers support for Vulkan on Linux to `8`

---
 Source/Engine/GraphicsDevice/Vulkan/Config.h                   | 2 ++
 Source/Engine/GraphicsDevice/Vulkan/GPUSwapChainVulkan.cpp     | 2 +-
 .../Engine/GraphicsDevice/Vulkan/Linux/LinuxVulkanPlatform.h   | 3 +++
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Source/Engine/GraphicsDevice/Vulkan/Config.h b/Source/Engine/GraphicsDevice/Vulkan/Config.h
index 34e5fe686..d31cb9a06 100644
--- a/Source/Engine/GraphicsDevice/Vulkan/Config.h
+++ b/Source/Engine/GraphicsDevice/Vulkan/Config.h
@@ -18,7 +18,9 @@
 #ifndef VULKAN_BACK_BUFFERS_COUNT
 #define VULKAN_BACK_BUFFERS_COUNT 2
 #endif
+#ifndef VULKAN_BACK_BUFFERS_COUNT_MAX
 #define VULKAN_BACK_BUFFERS_COUNT_MAX 4
+#endif
 
 /// <summary>
 /// Default amount of frames to wait until resource delete.
diff --git a/Source/Engine/GraphicsDevice/Vulkan/GPUSwapChainVulkan.cpp b/Source/Engine/GraphicsDevice/Vulkan/GPUSwapChainVulkan.cpp
index ddc1474cf..2379f9b33 100644
--- a/Source/Engine/GraphicsDevice/Vulkan/GPUSwapChainVulkan.cpp
+++ b/Source/Engine/GraphicsDevice/Vulkan/GPUSwapChainVulkan.cpp
@@ -393,7 +393,7 @@ bool GPUSwapChainVulkan::CreateSwapChain(int32 width, int32 height)
         VALIDATE_VULKAN_RESULT(vkGetSwapchainImagesKHR(device, _swapChain, &imagesCount, nullptr));
         if (imagesCount < 1 || imagesCount > VULKAN_BACK_BUFFERS_COUNT_MAX)
         {
-            LOG(Warning, "Vulkan swapchain got invalid amount of backbuffers  {} instead of {} (min {})", imagesCount, VULKAN_BACK_BUFFERS_COUNT, swapChainInfo.minImageCount);
+            LOG(Warning, "Vulkan swapchain got invalid amount of backbuffers {} instead of {} (min {})", imagesCount, VULKAN_BACK_BUFFERS_COUNT, swapChainInfo.minImageCount);
             return true;
         }
         VkImage images[VULKAN_BACK_BUFFERS_COUNT_MAX];
diff --git a/Source/Engine/GraphicsDevice/Vulkan/Linux/LinuxVulkanPlatform.h b/Source/Engine/GraphicsDevice/Vulkan/Linux/LinuxVulkanPlatform.h
index e58903c33..3c8ee101e 100644
--- a/Source/Engine/GraphicsDevice/Vulkan/Linux/LinuxVulkanPlatform.h
+++ b/Source/Engine/GraphicsDevice/Vulkan/Linux/LinuxVulkanPlatform.h
@@ -6,6 +6,9 @@
 
 #if GRAPHICS_API_VULKAN && PLATFORM_LINUX
 
+// Support more backbuffers in case driver decides to use more (https://gitlab.freedesktop.org/apinheiro/mesa/-/issues/9)
+#define VULKAN_BACK_BUFFERS_COUNT_MAX 8
+
 /// <summary>
 /// The implementation for the Vulkan API support for Linux platform.
 /// </summary>