From 53eeb421c5341c405e09acac65431fac6f135261 Mon Sep 17 00:00:00 2001
From: Dom Chen <dom@idom.me>
Date: Fri, 13 Dec 2024 19:33:16 +0800
Subject: [PATCH] Fix an issue where GpuBuffers with valid UniqueKeys are
 mistakenly purged from cache. (#376)

---
 src/gpu/ResourceCache.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gpu/ResourceCache.cpp b/src/gpu/ResourceCache.cpp
index 1d24a712..4066aa76 100644
--- a/src/gpu/ResourceCache.cpp
+++ b/src/gpu/ResourceCache.cpp
@@ -230,7 +230,7 @@ void ResourceCache::processUnreferencedResources() {
   auto currentTime = std::chrono::steady_clock::now();
   for (auto& resource : needToPurge) {
     RemoveFromList(nonpurgeableResources, resource);
-    if (!resource->scratchKey.empty()) {
+    if (!resource->scratchKey.empty() || resource->hasExternalReferences()) {
       AddToList(purgeableResources, resource);
       purgeableBytes += resource->memoryUsage();
       resource->lastUsedTime = currentTime;