From a8093c2a3cf98ccccabeb1d6a2c1ccc5e191557f Mon Sep 17 00:00:00 2001
From: lizzie <lizzie@eden-emu.dev>
Date: Tue, 10 Feb 2026 03:34:07 +0100
Subject: [*] 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/texture_cache/texture_cache.h | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

(limited to 'src/video_core/texture_cache/texture_cache.h')

diff --git a/src/video_core/texture_cache/texture_cache.h b/src/video_core/texture_cache/texture_cache.h
index 2564a67780..0ed65e29e9 100644
--- a/src/video_core/texture_cache/texture_cache.h
+++ b/src/video_core/texture_cache/texture_cache.h
@@ -9,7 +9,7 @@
 #include <limits>
 #include <optional>
 #include <bit>
-#include <unordered_set>
+#include <ankerl/unordered_dense.h>
 #include <boost/container/small_vector.hpp>
 
 #include "common/alignment.h"
@@ -1989,8 +1989,8 @@ SamplerId TextureCache<P>::FindSampler(const TSCEntry& config) {
     }
     const auto [pair, is_new] = channel_state->samplers.try_emplace(config);
     if (is_new) {
-        EnforceSamplerBudget();
         pair->second = slot_samplers.insert(runtime, config);
+        EnforceSamplerBudget();
     }
     return pair->second;
 }
@@ -2035,7 +2035,7 @@ void TextureCache<P>::TrimInactiveSamplers(size_t budget) {
         }
         set.insert(id);
     };
-    std::unordered_set<SamplerId> active;
+    ankerl::unordered_dense::set<SamplerId> active;
     active.reserve(channel_state->graphics_sampler_ids.size() +
                    channel_state->compute_sampler_ids.size());
     for (const SamplerId id : channel_state->graphics_sampler_ids) {
@@ -2363,9 +2363,7 @@ void TextureCache<P>::UnregisterImage(ImageId image_id) {
     image.flags &= ~ImageFlagBits::BadOverlap;
     lru_cache.Free(image.lru_index);
     const auto& clear_page_table =
-        [image_id](u64 page,
-                   std::unordered_map<u64, std::vector<ImageId>, Common::IdentityHash<u64>>&
-                       selected_page_table) {
+        [image_id](u64 page, ankerl::unordered_dense::map<u64, std::vector<ImageId>, Common::IdentityHash<u64>>& selected_page_table) {
             const auto page_it = selected_page_table.find(page);
             if (page_it == selected_page_table.end()) {
                 ASSERT_MSG(false, "Unregistering unregistered page=0x{:x}", page << YUZU_PAGEBITS);
-- 
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