From 249e006667966b7709b74709a801c46714aecec1 Mon Sep 17 00:00:00 2001
From: wildcard <wildcard@eden-emu.dev>
Date: Wed, 17 Sep 2025 21:40:09 +0200
Subject: [PATCH] [VMA] Use Host cached and Host coherent for Download
 operations (#482)

Increase read speeds by using appropriate usage flags

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/482
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
Co-authored-by: wildcard <wildcard@eden-emu.dev>
Co-committed-by: wildcard <wildcard@eden-emu.dev>
---
 src/video_core/vulkan_common/vulkan_memory_allocator.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/video_core/vulkan_common/vulkan_memory_allocator.cpp b/src/video_core/vulkan_common/vulkan_memory_allocator.cpp
index 675dede61c..119b4be1c8 100644
--- a/src/video_core/vulkan_common/vulkan_memory_allocator.cpp
+++ b/src/video_core/vulkan_common/vulkan_memory_allocator.cpp
@@ -49,6 +49,9 @@ namespace Vulkan {
         }
 
         [[nodiscard]] VkMemoryPropertyFlags MemoryUsagePreferredVmaFlags(MemoryUsage usage) {
+            if (usage == MemoryUsage::Download) {
+                return VK_MEMORY_PROPERTY_HOST_CACHED_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
+            }
             return usage != MemoryUsage::DeviceLocal ? VK_MEMORY_PROPERTY_HOST_COHERENT_BIT
                                                      : VkMemoryPropertyFlagBits{};
         }