trying to reduce flicker

Author: chrisj

src/chunk_manager/frontend.ts

@@ -266,9 +266,10 @@ export class ChunkQueueManager extends SharedObject {
         if (newState !== oldState) {
           switch (newState) {
             case ChunkState.GPU_MEMORY:
-              // console.log("Copying to GPU", chunk);
               chunk.copyToGPU(this.gl);
-              visibleChunksChanged = true;
+              if (chunk.constructor.name !== "ManifestChunk") {
+                visibleChunksChanged = true;
+              }
               break;
             case ChunkState.SYSTEM_MEMORY:
               if (oldState === ChunkState.GPU_MEMORY) {