[*] change all std::unordered_map and std::unordered_set into ankerl::unordered_dense::map/set variants (#3442)

mainly doing this to reduce memory footprint; we all know how nice ankerl::unordered_dense is

in theory 4x faster - in practice these maps arent that "hot" anyways so not likely to have much perf gained

i just want to reduce mem fragmentation to ease my porting process, plus it helps other platforms as well (ahem weak Mediatek devices) :)

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Co-authored-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3442
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

src/video_core/renderer_vulkan/vk_pipeline_cache.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -8,7 +11,7 @@
 #include <filesystem>
 #include <memory>
 #include <type_traits>
-#include <unordered_map>
+#include <ankerl/unordered_dense.h>
 #include <vector>
 
 #include "common/common_types.h"
@@ -155,8 +158,8 @@ private:
     GraphicsPipelineCacheKey graphics_key{};
     GraphicsPipeline* current_pipeline{};
 
-    std::unordered_map<ComputePipelineCacheKey, std::unique_ptr<ComputePipeline>> compute_cache;
-    std::unordered_map<GraphicsPipelineCacheKey, std::unique_ptr<GraphicsPipeline>> graphics_cache;
+    ankerl::unordered_dense::map<ComputePipelineCacheKey, std::unique_ptr<ComputePipeline>> compute_cache;
+    ankerl::unordered_dense::map<GraphicsPipelineCacheKey, std::unique_ptr<GraphicsPipeline>> graphics_cache;
 
     ShaderPools main_pools;
 

src/video_core/renderer_vulkan/vk_query_cache.cpp

@@ -10,7 +10,7 @@
 #include <memory>
 #include <span>
 #include <type_traits>
-#include <unordered_map>
+#include <ankerl/unordered_dense.h>
 #include <utility>
 #include <vector>
 #include "video_core/renderer_vulkan/vk_texture_cache.h"
@@ -230,7 +230,7 @@ public:
         sync_values_stash.emplace_back();
         std::vector<HostSyncValues>* sync_values = &sync_values_stash.back();
         sync_values->reserve(num_slots_used);
-        std::unordered_map<size_t, std::pair<size_t, size_t>> offsets;
+        ankerl::unordered_dense::map<size_t, std::pair<size_t, size_t>> offsets;
         resolve_buffers.clear();
         size_t resolve_buffer_index = ObtainBuffer<true>(num_slots_used);
         resolve_buffers.push_back(resolve_buffer_index);
@@ -412,7 +412,7 @@ private:
     template <bool is_ordered, typename Func>
     void ApplyBanksWideOp(std::vector<size_t>& queries, Func&& func) {
         std::conditional_t<is_ordered, std::map<size_t, std::pair<size_t, size_t>>,
-                           std::unordered_map<size_t, std::pair<size_t, size_t>>>
+                           ankerl::unordered_dense::map<size_t, std::pair<size_t, size_t>>>
             indexer;
         for (auto q : queries) {
             auto* query = GetQuery(q);
@@ -722,7 +722,7 @@ public:
 
     void SyncWrites() override {
         CloseCounter();
-        std::unordered_map<size_t, std::vector<HostSyncValues>> sync_values_stash;
+        ankerl::unordered_dense::map<size_t, std::vector<HostSyncValues>> sync_values_stash;
         for (auto q : pending_sync) {
             auto* query = GetQuery(q);
             if (True(query->flags & VideoCommon::QueryFlagBits::IsRewritten)) {

src/video_core/renderer_vulkan/vk_render_pass_cache.cpp

@@ -4,7 +4,7 @@
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include <unordered_map>
+#include <ankerl/unordered_dense.h>
 
 #include <boost/container/static_vector.hpp>
 

src/video_core/renderer_vulkan/vk_render_pass_cache.h

@@ -1,10 +1,13 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
 
 #include <mutex>
-#include <unordered_map>
+#include <ankerl/unordered_dense.h>
 
 #include "video_core/surface.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"
@@ -47,7 +50,7 @@ public:
 
 private:
     const Device* device{};
-    std::unordered_map<RenderPassKey, vk::RenderPass> cache;
+    ankerl::unordered_dense::map<RenderPassKey, vk::RenderPass> cache;
     std::mutex mutex;
 };