#include "copium/buffer/IndexBuffer.h"

#include <vulkan/vulkan.hpp>

#include "copium/util/Trace.h"

namespace Copium
{
  IndexBuffer::IndexBuffer(int indexCount)
    : Buffer{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 IndexBuffer::Bind(const CommandBuffer& commandBuffer)
  {
    vkCmdBindIndexBuffer(commandBuffer, handle, 0, VK_INDEX_TYPE_UINT16);
  }

  void IndexBuffer::Draw(const CommandBuffer& commandBuffer)
  {
    vkCmdDrawIndexed(commandBuffer, indexCount, 1, 0, 0, 0);
  }

  void IndexBuffer::Draw(const CommandBuffer& commandBuffer, int indices)
  {
    CP_ASSERT(indices >= 0 && indices <= indexCount, "amount of indices is out of range");
    vkCmdDrawIndexed(commandBuffer, indices, 1, 0, 0, 0);
  }
}