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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/resource.h"
#include <limits>
#include "src/make_unique.h"
#include "src/vulkan/command_buffer.h"
#include "src/vulkan/device.h"
namespace amber {
namespace vulkan {
namespace {
VkMemoryBarrier kMemoryBarrierForAll = {
VK_STRUCTURE_TYPE_MEMORY_BARRIER, nullptr,
VK_ACCESS_INDIRECT_COMMAND_READ_BIT | VK_ACCESS_INDEX_READ_BIT |
VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT | VK_ACCESS_UNIFORM_READ_BIT |
VK_ACCESS_INPUT_ATTACHMENT_READ_BIT | VK_ACCESS_SHADER_READ_BIT |
VK_ACCESS_SHADER_WRITE_BIT | VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
VK_ACCESS_TRANSFER_READ_BIT | VK_ACCESS_TRANSFER_WRITE_BIT |
VK_ACCESS_HOST_READ_BIT | VK_ACCESS_HOST_WRITE_BIT,
VK_ACCESS_INDIRECT_COMMAND_READ_BIT | VK_ACCESS_INDEX_READ_BIT |
VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT | VK_ACCESS_UNIFORM_READ_BIT |
VK_ACCESS_INPUT_ATTACHMENT_READ_BIT | VK_ACCESS_SHADER_READ_BIT |
VK_ACCESS_SHADER_WRITE_BIT | VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
VK_ACCESS_TRANSFER_READ_BIT | VK_ACCESS_TRANSFER_WRITE_BIT |
VK_ACCESS_HOST_READ_BIT | VK_ACCESS_HOST_WRITE_BIT};
} // namespace
Resource::Resource(Device* device, uint32_t size_in_bytes)
: device_(device), size_in_bytes_(size_in_bytes) {}
Resource::~Resource() = default;
Result Resource::CreateVkBuffer(VkBuffer* buffer, VkBufferUsageFlags usage) {
if (!buffer)
return Result("Vulkan::Given VkBuffer pointer is nullptr");
VkBufferCreateInfo buffer_info = VkBufferCreateInfo();
buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
buffer_info.size = size_in_bytes_;
buffer_info.usage = usage;
if (device_->GetPtrs()->vkCreateBuffer(device_->GetVkDevice(), &buffer_info,
nullptr, buffer) != VK_SUCCESS) {
return Result("Vulkan::Calling vkCreateBuffer Fail");
}
return {};
}
uint32_t Resource::ChooseMemory(uint32_t memory_type_bits,
VkMemoryPropertyFlags flags,
bool require_flags_found) {
// Based on Vulkan spec about VkMemoryRequirements, N th bit of
// |memory_type_bits| is 1 where N can be the proper memory type index.
// This code is looking for the first non-zero bit whose memory type
// VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT property. If not exists,
// it returns the first non-zero bit.
uint32_t first_non_zero = std::numeric_limits<uint32_t>::max();
uint32_t memory_type_index = 0;
while (memory_type_bits) {
if (memory_type_bits % 2) {
if (first_non_zero == std::numeric_limits<uint32_t>::max())
first_non_zero = memory_type_index;
if (device_->HasMemoryFlags(memory_type_index, flags))
return memory_type_index;
}
++memory_type_index;
memory_type_bits >>= 1;
}
if (require_flags_found)
return std::numeric_limits<uint32_t>::max();
return first_non_zero;
}
Result Resource::AllocateAndBindMemoryToVkBuffer(VkBuffer buffer,
VkDeviceMemory* memory,
VkMemoryPropertyFlags flags,
bool require_flags_found,
uint32_t* memory_type_index) {
if (memory_type_index == nullptr) {
return Result(
"Vulkan: Resource::AllocateAndBindMemoryToVkBuffer memory_type_index "
"is nullptr");
}
*memory_type_index = 0;
if (buffer == VK_NULL_HANDLE)
return Result("Vulkan::Given VkBuffer is VK_NULL_HANDLE");
if (memory == nullptr)
return Result("Vulkan::Given VkDeviceMemory pointer is nullptr");
VkMemoryRequirements requirement;
device_->GetPtrs()->vkGetBufferMemoryRequirements(device_->GetVkDevice(),
buffer, &requirement);
*memory_type_index =
ChooseMemory(requirement.memoryTypeBits, flags, require_flags_found);
if (*memory_type_index == std::numeric_limits<uint32_t>::max())
return Result("Vulkan::Find Proper Memory Fail");
Result r = AllocateMemory(memory, requirement.size, *memory_type_index);
if (!r.IsSuccess())
return r;
if (device_->GetPtrs()->vkBindBufferMemory(device_->GetVkDevice(), buffer,
*memory, 0) != VK_SUCCESS) {
return Result("Vulkan::Calling vkBindBufferMemory Fail");
}
return {};
}
Result Resource::AllocateMemory(VkDeviceMemory* memory,
VkDeviceSize size,
uint32_t memory_type_index) {
VkMemoryAllocateInfo alloc_info = VkMemoryAllocateInfo();
alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
alloc_info.allocationSize = size;
alloc_info.memoryTypeIndex = memory_type_index;
if (device_->GetPtrs()->vkAllocateMemory(device_->GetVkDevice(), &alloc_info,
nullptr, memory) != VK_SUCCESS) {
return Result("Vulkan::Calling vkAllocateMemory Fail");
}
return {};
}
Result Resource::MapMemory(VkDeviceMemory memory) {
if (device_->GetPtrs()->vkMapMemory(device_->GetVkDevice(), memory, 0,
VK_WHOLE_SIZE, 0,
&memory_ptr_) != VK_SUCCESS) {
return Result("Vulkan::Calling vkMapMemory Fail");
}
return {};
}
void Resource::UnMapMemory(VkDeviceMemory memory) {
device_->GetPtrs()->vkUnmapMemory(device_->GetVkDevice(), memory);
}
void Resource::MemoryBarrier(CommandBuffer* command_buffer) {
// TODO(jaebaek): Current memory barrier is natively implemented.
// Update it with the following access flags:
// (r = read, w = write)
//
// Host Device
// VertexBuffer host w vertex r
// transfer w transfer r
//
// IndexBuffer host w index r
// transfer w transfer r
//
// FrameBuffer host r color w
// depth/stencil w
// transfer r transfer w
//
// ReadWrite Descriptors host r/w shader r/w
// transfer r/w transfer r/w
//
// ReadOnly Descriptors host w shader r
// transfer w transfer r
device_->GetPtrs()->vkCmdPipelineBarrier(
command_buffer->GetVkCommandBuffer(), VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 1, &kMemoryBarrierForAll, 0,
nullptr, 0, nullptr);
}
} // namespace vulkan
} // namespace amber
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