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/* Copyright (C) 2024 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "Buffer.h"
#include "renderer/backend/vulkan/Device.h"
#include "renderer/backend/vulkan/Utilities.h"
#include <tuple>
namespace Renderer
{
namespace Backend
{
namespace Vulkan
{
VkBufferUsageFlags ToVkBufferUsageFlags(const uint32_t usage)
{
VkBufferUsageFlags usageFlags = 0;
if (usage & IBuffer::Usage::TRANSFER_SRC)
usageFlags |= VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
if (usage & IBuffer::Usage::TRANSFER_DST)
usageFlags |= VK_BUFFER_USAGE_TRANSFER_DST_BIT;
if (usage & IBuffer::Usage::STORAGE)
usageFlags |= VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
return usageFlags;
}
std::tuple<VkBufferUsageFlags, VkMemoryPropertyFlags, VmaMemoryUsage> MakeCreationFlags(
const IBuffer::Type type, const uint32_t usage)
{
const VkBufferUsageFlags commonFlags = ToVkBufferUsageFlags(usage);
switch (type)
{
case IBuffer::Type::VERTEX:
ENSURE(usage & (IBuffer::Usage::TRANSFER_DST | IBuffer::Usage::STORAGE));
return {
commonFlags | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE};
case IBuffer::Type::INDEX:
ENSURE(usage & (IBuffer::Usage::TRANSFER_DST | IBuffer::Usage::STORAGE));
return {
commonFlags | VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE};
case IBuffer::Type::UPLOAD:
ENSURE(usage & IBuffer::Usage::TRANSFER_SRC);
ENSURE(!(usage & IBuffer::Usage::STORAGE));
return {
commonFlags,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
VMA_MEMORY_USAGE_AUTO};
case IBuffer::Type::UNIFORM:
ENSURE(usage & IBuffer::Usage::TRANSFER_DST);
return {
commonFlags | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE};
}
return {0, 0, VMA_MEMORY_USAGE_AUTO};
}
// static
std::unique_ptr<CBuffer> CBuffer::Create(
CDevice* device, const char* name, const Type type, const uint32_t size,
const uint32_t usage)
{
std::unique_ptr<CBuffer> buffer(new CBuffer());
buffer->m_Device = device;
buffer->m_UID = device->GenerateNextDeviceObjectUID();
buffer->m_Type = type;
buffer->m_Size = size;
buffer->m_Usage = usage;
const auto [usageFlags, memoryProperties, memoryUsage] = MakeCreationFlags(type, usage);
// According to the Vulkan spec usage must not be 0.
ENSURE(usageFlags != 0);
VkBufferCreateInfo bufferCreateInfo{};
bufferCreateInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
bufferCreateInfo.size = size;
bufferCreateInfo.usage = usageFlags;
bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
VmaAllocationCreateInfo allocationCreateInfo{};
if (type == Type::UPLOAD)
allocationCreateInfo.flags = VMA_ALLOCATION_CREATE_MAPPED_BIT | VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT;
#ifndef NDEBUG
allocationCreateInfo.flags |= VMA_ALLOCATION_CREATE_USER_DATA_COPY_STRING_BIT;
allocationCreateInfo.pUserData = const_cast<char*>(name);
#endif
allocationCreateInfo.requiredFlags = memoryProperties;
allocationCreateInfo.usage = memoryUsage;
const VkResult createBufferResult = vmaCreateBuffer(
device->GetVMAAllocator(), &bufferCreateInfo, &allocationCreateInfo,
&buffer->m_Buffer, &buffer->m_Allocation, &buffer->m_AllocationInfo);
if (createBufferResult != VK_SUCCESS)
{
LOGERROR("Failed to create VkBuffer: %d (%s)", static_cast<int>(createBufferResult), Utilities::GetVkResultName(createBufferResult));
return nullptr;
}
device->SetObjectName(VK_OBJECT_TYPE_BUFFER, buffer->m_Buffer, name);
return buffer;
}
CBuffer::CBuffer() = default;
CBuffer::~CBuffer()
{
if (m_Allocation != VK_NULL_HANDLE)
m_Device->ScheduleObjectToDestroy(
VK_OBJECT_TYPE_BUFFER, m_Buffer, m_Allocation);
m_Device->ScheduleBufferToDestroy(m_UID);
}
IDevice* CBuffer::GetDevice()
{
return m_Device;
}
} // namespace Vulkan
} // namespace Backend
} // namespace Renderer
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