From 3df3a109751e9bc1d7abe0a9eced8c8f1214a679 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Thu, 24 Oct 2024 16:41:25 +0200
Subject: [PATCH] frog

---
 src/dxvk/dxvk_memory.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/dxvk/dxvk_memory.cpp b/src/dxvk/dxvk_memory.cpp
index 4d31bbdf044..2963ca40fc4 100644
--- a/src/dxvk/dxvk_memory.cpp
+++ b/src/dxvk/dxvk_memory.cpp
@@ -2146,11 +2146,29 @@ namespace dxvk {
     }
   }
 
+  static uint32_t lastDefrag = 0u;
+
 
   void DxvkMemoryAllocator::pickDefragChunk(
           DxvkMemoryType&       type) {
     auto& pool = type.devicePool;
 
+    if (pool.chunks.size() == 0)
+      return;
+
+    for (uint32_t i = 1; i <= pool.chunks.size(); i++) {
+      auto index = (lastDefrag + i) % pool.chunks.size();
+
+      if (pool.chunks[index].canMove && pool.pageAllocator.pagesUsed(index)) {
+        pool.nextDefragChunk = index;
+        pool.pageAllocator.killChunk(index);
+        lastDefrag = index;
+        return;
+      }
+    }
+
+    return;
+
     // Only engage defragmentation at all if we have a significant
     // amount of memory wasted, or if we're under memory pressure.
     auto heapStats = getMemoryStats(type.heap->index);