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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.
#include "src/vulkan/transfer_buffer.h"
#include <cstring>
#include "src/vulkan/command_buffer.h"
#include "src/vulkan/device.h"
namespace amber {
namespace vulkan {
TransferBuffer::TransferBuffer(Device* device, uint32_t size_in_bytes)
: Resource(device, size_in_bytes) {}
TransferBuffer::~TransferBuffer() {
if (memory_ != VK_NULL_HANDLE) {
UnMapMemory(memory_);
device_->GetPtrs()->vkFreeMemory(device_->GetVkDevice(), memory_, nullptr);
}
if (buffer_ != VK_NULL_HANDLE)
device_->GetPtrs()->vkDestroyBuffer(device_->GetVkDevice(), buffer_,
nullptr);
}
Result TransferBuffer::Initialize(const VkBufferUsageFlags usage) {
Result r = CreateVkBuffer(&buffer_, usage);
if (!r.IsSuccess())
return r;
uint32_t memory_type_index = 0;
r = AllocateAndBindMemoryToVkBuffer(buffer_, &memory_,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
true, &memory_type_index);
if (!r.IsSuccess())
return r;
if (!device_->IsMemoryHostAccessible(memory_type_index) ||
!device_->IsMemoryHostCoherent(memory_type_index)) {
return Result(
"Vulkan: TransferBuffer::Initialize() buffer is not host accessible or"
" not host coherent.");
}
return MapMemory(memory_);
}
void TransferBuffer::CopyToDevice(CommandBuffer* command) {
// This is redundant because this buffer is always host visible
// and coherent and vkQueueSubmit will make writes from host
// available (See chapter 6.9. "Host Write Ordering Guarantees" in
// Vulkan spec), but we prefer to keep it to simplify our own code.
MemoryBarrier(command);
}
void TransferBuffer::CopyToHost(CommandBuffer* command) {
MemoryBarrier(command);
}
void TransferBuffer::UpdateMemoryWithRawData(
const std::vector<uint8_t>& raw_data) {
size_t effective_size =
raw_data.size() > GetSizeInBytes() ? GetSizeInBytes() : raw_data.size();
std::memcpy(HostAccessibleMemoryPtr(), raw_data.data(), effective_size);
}
} // namespace vulkan
} // namespace amber
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