Make GC lazy when the buffer is barely fragmented

I'm not sure how much this improves performance.

2 files changed, 7 insertions, 1 deletions

diff --git a/src/main/java/makamys/neodymium/renderer/GPUMemoryManager.java b/src/main/java/makamys/neodymium/renderer/GPUMemoryManager.java
index a353ad5..882b0c6 100644
--- a/src/main/java/makamys/neodymium/renderer/GPUMemoryManager.java
+++ b/src/main/java/makamys/neodymium/renderer/GPUMemoryManager.java
@@ -232,4 +232,8 @@ public class GPUMemoryManager {
         GuiHelper.drawRectangle((bufferSize / scale) % rowLength, (bufferSize / scale) / rowLength + yOff, 4, 4, 0xFF0000);
     }
     
+    public float getCoherenceRate() {
+        return (float)ChunkMesh.usedRAM / (float)end();
+    }
+    
 }
diff --git a/src/main/java/makamys/neodymium/renderer/NeoRenderer.java b/src/main/java/makamys/neodymium/renderer/NeoRenderer.java
index fed8a48..3e1abe5 100644
--- a/src/main/java/makamys/neodymium/renderer/NeoRenderer.java
+++ b/src/main/java/makamys/neodymium/renderer/NeoRenderer.java
@@ -132,7 +132,9 @@ public class NeoRenderer {
             if(Minecraft.getMinecraft().currentScreen == null) {
                 handleKeyboard();
             }
-            mem.runGC(false);
+            if(mem.getCoherenceRate() < 0.95f || frameCount % 4 == 0) {
+                mem.runGC(false);
+            }
             lastGCTime = System.currentTimeMillis();
             if(lastSaveTime == -1 || (System.currentTimeMillis() - lastSaveTime) > saveInterval && Config.saveMeshes) {
                 onSave();