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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/buffer.h"
namespace amber {
namespace vulkan {
Buffer::Buffer(VkDevice device,
size_t size_in_bytes,
const VkPhysicalDeviceMemoryProperties& properties)
: Resource(device, size_in_bytes, properties) {}
Buffer::~Buffer() = default;
Result Buffer::Initialize(const VkBufferUsageFlags usage) {
Result r = CreateVkBuffer(&buffer_, usage);
if (!r.IsSuccess())
return r;
AllocateResult allocate_result = AllocateAndBindMemoryToVkBuffer(
buffer_, &memory_, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, false);
if (!allocate_result.r.IsSuccess())
return allocate_result.r;
if (IsMemoryHostAccessible(allocate_result.memory_type_index)) {
is_buffer_host_accessible_ = true;
is_buffer_host_coherent_ =
IsMemoryHostCoherent(allocate_result.memory_type_index);
return MapMemory(memory_);
}
is_buffer_host_accessible_ = false;
return Resource::Initialize();
}
Result Buffer::CreateVkBufferView(VkFormat format) {
VkBufferViewCreateInfo buffer_view_info = {};
buffer_view_info.sType = VK_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO;
buffer_view_info.buffer = buffer_;
buffer_view_info.format = format;
buffer_view_info.offset = 0;
buffer_view_info.range = VK_WHOLE_SIZE;
if (vkCreateBufferView(GetDevice(), &buffer_view_info, nullptr, &view_) !=
VK_SUCCESS) {
return Result("Vulkan::Calling vkCreateBufferView Fail");
}
return {};
}
Result Buffer::CopyToDevice(VkCommandBuffer command) {
if (is_buffer_host_accessible_)
return FlushMemoryIfNeeded();
VkBufferCopy region = {};
region.srcOffset = 0;
region.dstOffset = 0;
region.size = GetSizeInBytes();
vkCmdCopyBuffer(command, GetHostAccessibleBuffer(), buffer_, 1, ®ion);
MemoryBarrier(command);
return {};
}
Result Buffer::CopyToHost(VkCommandBuffer command) {
if (is_buffer_host_accessible_)
return InvalidateMemoryIfNeeded();
VkBufferCopy region = {};
region.srcOffset = 0;
region.dstOffset = 0;
region.size = GetSizeInBytes();
vkCmdCopyBuffer(command, buffer_, GetHostAccessibleBuffer(), 1, ®ion);
MemoryBarrier(command);
return {};
}
void Buffer::CopyFromBuffer(VkCommandBuffer command, const Buffer& src) {
VkBufferCopy region = {};
region.srcOffset = 0;
region.dstOffset = 0;
region.size = src.GetSizeInBytes();
vkCmdCopyBuffer(command, src.buffer_, buffer_, 1, ®ion);
MemoryBarrier(command);
}
void Buffer::Shutdown() {
if (view_ != VK_NULL_HANDLE)
vkDestroyBufferView(GetDevice(), view_, nullptr);
if (memory_ != VK_NULL_HANDLE) {
if (is_buffer_host_accessible_)
UnMapMemory(memory_);
vkFreeMemory(GetDevice(), memory_, nullptr);
}
if (buffer_ != VK_NULL_HANDLE)
vkDestroyBuffer(GetDevice(), buffer_, nullptr);
if (!is_buffer_host_accessible_)
Resource::Shutdown();
}
Result Buffer::InvalidateMemoryIfNeeded() {
if (is_buffer_host_coherent_)
return {};
VkMappedMemoryRange range = {};
range.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range.memory = GetHostAccessMemory();
range.offset = 0;
range.size = VK_WHOLE_SIZE;
if (vkInvalidateMappedMemoryRanges(GetDevice(), 1, &range) != VK_SUCCESS)
return Result("Vulkan: vkInvalidateMappedMemoryRanges fail");
return {};
}
Result Buffer::FlushMemoryIfNeeded() {
if (is_buffer_host_coherent_)
return {};
VkMappedMemoryRange range = {};
range.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range.memory = GetHostAccessMemory();
range.offset = 0;
range.size = VK_WHOLE_SIZE;
if (vkFlushMappedMemoryRanges(GetDevice(), 1, &range) != VK_SUCCESS)
return Result("Vulkan: vkFlushMappedMemoryRanges fail");
return {};
}
} // namespace vulkan
} // namespace amber
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