Add Buffer abstractions

Vulkan/src/IndexBuffer.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "Buffer.h"
+
+class IndexBuffer : public Buffer
+{
+  CP_DELETE_COPY_AND_MOVE_CTOR(IndexBuffer);
+private:
+  int indexCount;
+public:
+  IndexBuffer(Instance& instance, int indexCount)
+    : Buffer{instance, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, indexCount * sizeof(uint16_t), 1}, indexCount{indexCount}
+  {}
+
+  void Bind(VkCommandBuffer commandBuffer) override
+  {
+    vkCmdBindIndexBuffer(commandBuffer, handle, 0, VK_INDEX_TYPE_UINT16);
+  }
+
+  void Draw(VkCommandBuffer commandBuffer)
+  {
+    vkCmdDrawIndexed(commandBuffer, indexCount, 1, 0, 0, 0);
+  }
+};