working on yet another rewrite of the mesh system

Author: codex128

jme3-core/src/main/java/com/jme3/vulkan/buffers/OldPersistentBuffer.java

@@ -0,0 +1,68 @@
+package com.jme3.vulkan.buffers;
+
+import com.jme3.vulkan.devices.LogicalDevice;
+import com.jme3.vulkan.memory.MemoryProp;
+import com.jme3.vulkan.memory.MemorySize;
+import com.jme3.vulkan.util.Flag;
+import org.lwjgl.PointerBuffer;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.ByteBuffer;
+
+@Deprecated
+public class OldPersistentBuffer extends BasicVulkanBuffer {
+
+    private final PointerBuffer mappedAddress = MemoryUtil.memCallocPointer(1);
+    private PointerBuffer regionAddress;
+    private ByteBuffer regionBuffer;
+
+    public OldPersistentBuffer(LogicalDevice<?> device, MemorySize size) {
+        super(device, size);
+    }
+
+    @Override
+    public PointerBuffer map(int offset, int size) {
+        if (offset > 0) {
+            mappedAddress.put(0, MemoryUtil.memAddress(regionBuffer, offset));
+        } else {
+            mappedAddress.put(0, regionAddress.get(0));
+        }
+        return mappedAddress;
+    }
+
+    @Override
+    public void unmap() {}
+
+    @Override
+    public Runnable createNativeDestroyer() {
+        Runnable sup = super.createNativeDestroyer();
+        return () -> {
+            sup.run();
+            MemoryUtil.memFree(mappedAddress);
+        };
+    }
+
+    @Override
+    public Builder build() {
+        return new Builder();
+    }
+
+    public class Builder extends BasicVulkanBuffer.Builder {
+
+        public Builder() {
+            memFlags = Flag.of(MemoryProp.HostVisible, MemoryProp.HostCoherent);
+        }
+
+        @Override
+        public void build() {
+            if (!memFlags.contains(MemoryProp.HostVisible)) {
+                throw new IllegalArgumentException("Memory must be host visible.");
+            }
+            super.build();
+            regionAddress = getMemory().map(0, size().getBytes());
+            regionBuffer = regionAddress.getByteBuffer(0, size().getBytes());
+        }
+
+    }
+
+}