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// Copyright 2018 The Amber Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_VULKAN_TRANSFER_BUFFER_H_
#define SRC_VULKAN_TRANSFER_BUFFER_H_
#include <vector>
#include "amber/result.h"
#include "amber/vulkan_header.h"
#include "src/vulkan/resource.h"
namespace amber {
namespace vulkan {
class CommandBuffer;
class Device;
// Class managing Vulkan Buffer i.e., VkBuffer |buffer_|. |memory_|
// has VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT and
// VK_MEMORY_PROPERTY_HOST_COHERENT_BIT properties and it is mapped
// to |buffer_|.
class TransferBuffer : public Resource {
public:
TransferBuffer(Device* device,
uint32_t size_in_bytes,
const VkPhysicalDeviceMemoryProperties& properties);
~TransferBuffer() override;
// Create |buffer_| whose usage is |usage| and allocate |memory_|
// with VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT and
// VK_MEMORY_PROPERTY_HOST_COHERENT_BIT properties. It also maps
// |memory_| to |buffer_|
Result Initialize(const VkBufferUsageFlags usage);
VkBuffer GetVkBuffer() const { return buffer_; }
Result CreateVkBufferView(VkFormat format);
VkBufferView GetVkBufferView() const { return view_; }
// Since |buffer_| is mapped to host accessible and host coherent
// memory |memory_|, this method only conducts memory barrier to
// make it available to device domain.
virtual Result CopyToDevice(CommandBuffer* command);
// Fill memory from 0 to |raw_data.size()| with |raw_data|.
void UpdateMemoryWithRawData(const std::vector<uint8_t>& raw_data);
// Since |buffer_| is mapped to host accessible and host coherent
// memory |memory_|, this method only conducts memory barrier to
// make it available to host domain.
Result CopyToHost(CommandBuffer* command) override;
private:
VkBuffer buffer_ = VK_NULL_HANDLE;
VkBufferView view_ = VK_NULL_HANDLE;
VkDeviceMemory memory_ = VK_NULL_HANDLE;
};
} // namespace vulkan
} // namespace amber
#endif // SRC_VULKAN_TRANSFER_BUFFER_H_
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