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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/vulkan_header.h"
#include "src/datum_type.h"
#include "src/engine.h"
#include "src/value.h"
#include "src/vulkan/buffer.h"
#include "src/vulkan/descriptor.h"
namespace amber {
namespace vulkan {
class Device;
// Among Vulkan descriptor types, this class handles Storage Buffer
// a.k.a. SSBO and Uniform Buffer a.k.a. UBO.
class BufferDescriptor : public Descriptor {
public:
BufferDescriptor(DescriptorType type,
Device* device,
uint32_t desc_set,
uint32_t binding);
~BufferDescriptor() override;
// Descriptor
Result CreateResourceIfNeeded(
const VkPhysicalDeviceMemoryProperties& properties) override;
Result RecordCopyDataToResourceIfNeeded(VkCommandBuffer command) override;
Result RecordCopyDataToHost(VkCommandBuffer command) override;
Result MoveResourceToBufferOutput() override;
Result UpdateDescriptorSetIfNeeded(VkDescriptorSet descriptor_set) override;
ResourceInfo GetResourceInfo() override;
void Shutdown() override;
private:
VkBufferUsageFlagBits GetVkBufferUsage() const {
return GetType() == DescriptorType::kStorageBuffer
? VK_BUFFER_USAGE_STORAGE_BUFFER_BIT
: VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
}
VkDescriptorType GetVkDescriptorType() const {
return GetType() == DescriptorType::kStorageBuffer
? VK_DESCRIPTOR_TYPE_STORAGE_BUFFER
: VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
}
std::unique_ptr<Buffer> buffer_;
std::vector<std::unique_ptr<Buffer>> not_destroyed_buffers_;
};
} // namespace vulkan
} // namespace amber
#endif // SRC_VULKAN_BUFFER_DESCRIPTOR_H_
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