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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_BUFFER_DESCRIPTOR_H_
#define SRC_VULKAN_BUFFER_DESCRIPTOR_H_
#include <memory>
#include <vector>
#include "amber/result.h"
#include "amber/value.h"
#include "amber/vulkan_header.h"
#include "src/buffer.h"
#include "src/datum_type.h"
#include "src/engine.h"
#include "src/vulkan/transfer_buffer.h"
namespace amber {
namespace vulkan {
class CommandBuffer;
class Device;
enum class DescriptorType : uint8_t {
kStorageBuffer = 0,
kUniformBuffer,
};
// Among Vulkan descriptor types, this class handles Storage Buffers
// and Uniform Buffers.
class BufferDescriptor {
public:
BufferDescriptor(Buffer* buffer,
DescriptorType type,
Device* device,
uint32_t desc_set,
uint32_t binding);
~BufferDescriptor();
uint32_t GetDescriptorSet() const { return descriptor_set_; }
uint32_t GetBinding() const { return binding_; }
VkDescriptorType GetVkDescriptorType() const;
bool IsStorageBuffer() const {
return type_ == DescriptorType::kStorageBuffer;
}
bool IsUniformBuffer() const {
return type_ == DescriptorType::kUniformBuffer;
}
Result CreateResourceIfNeeded(
const VkPhysicalDeviceMemoryProperties& properties);
void RecordCopyDataToResourceIfNeeded(CommandBuffer* command);
Result RecordCopyDataToHost(CommandBuffer* command);
Result MoveResourceToBufferOutput();
void UpdateDescriptorSetIfNeeded(VkDescriptorSet descriptor_set);
Result AddToBuffer(DataType type,
uint32_t offset,
uint32_t size_in_bytes,
const std::vector<Value>& values);
private:
Device* device_ = nullptr;
Buffer* amber_buffer_ = nullptr;
std::unique_ptr<TransferBuffer> transfer_buffer_;
DescriptorType type_ = DescriptorType::kStorageBuffer;
bool is_descriptor_set_update_needed_ = false;
uint32_t descriptor_set_ = 0;
uint32_t binding_ = 0;
};
} // namespace vulkan
} // namespace amber
#endif // SRC_VULKAN_BUFFER_DESCRIPTOR_H_
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