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/*
* Copyright 2019-2021 Diligent Graphics LLC
* Copyright 2015-2019 Egor Yusov
*
* 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.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#include "pch.h"
#include "TopLevelASVkImpl.hpp"
#include "RenderDeviceVkImpl.hpp"
#include "VulkanTypeConversions.hpp"
namespace Diligent
{
TopLevelASVkImpl::TopLevelASVkImpl(IReferenceCounters* pRefCounters,
RenderDeviceVkImpl* pRenderDeviceVk,
const TopLevelASDesc& Desc) :
TTopLevelASBase{pRefCounters, pRenderDeviceVk, Desc}
{
const auto& LogicalDevice = pRenderDeviceVk->GetLogicalDevice();
const auto& PhysicalDevice = pRenderDeviceVk->GetPhysicalDevice();
const auto& Limits = PhysicalDevice.GetExtProperties().AccelStruct;
Uint32 AccelStructSize = m_Desc.CompactedSize;
if (AccelStructSize == 0)
{
VkAccelerationStructureBuildGeometryInfoKHR vkBuildInfo = {};
VkAccelerationStructureBuildSizesInfoKHR vkSizeInfo = {VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_BUILD_SIZES_INFO_KHR};
VkAccelerationStructureGeometryKHR vkGeometry = {};
VkAccelerationStructureGeometryInstancesDataKHR& vkInstances = vkGeometry.geometry.instances;
const uint32_t MaxPrimitiveCount = m_Desc.MaxInstanceCount;
vkGeometry.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_KHR;
vkGeometry.geometryType = VK_GEOMETRY_TYPE_INSTANCES_KHR;
vkInstances.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_INSTANCES_DATA_KHR;
vkInstances.arrayOfPointers = VK_FALSE;
vkBuildInfo.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_BUILD_GEOMETRY_INFO_KHR;
vkBuildInfo.flags = BuildASFlagsToVkBuildAccelerationStructureFlags(m_Desc.Flags);
vkBuildInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
vkBuildInfo.pGeometries = &vkGeometry;
vkBuildInfo.geometryCount = 1;
DEV_CHECK_ERR(m_Desc.MaxInstanceCount <= Limits.maxInstanceCount,
"Max instance count (", m_Desc.MaxInstanceCount, ") exceeds device limit (", Limits.maxInstanceCount, ").");
LogicalDevice.GetAccelerationStructureBuildSizes(vkBuildInfo, &MaxPrimitiveCount, vkSizeInfo);
AccelStructSize = static_cast<Uint32>(vkSizeInfo.accelerationStructureSize);
m_ScratchSize.Build = static_cast<Uint32>(vkSizeInfo.buildScratchSize);
m_ScratchSize.Update = static_cast<Uint32>(vkSizeInfo.updateScratchSize);
}
VkBufferCreateInfo vkBuffCI = {};
vkBuffCI.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
vkBuffCI.flags = 0;
vkBuffCI.size = AccelStructSize;
vkBuffCI.usage = VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_STORAGE_BIT_KHR;
vkBuffCI.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
vkBuffCI.queueFamilyIndexCount = 0;
vkBuffCI.pQueueFamilyIndices = nullptr;
m_VulkanBuffer = LogicalDevice.CreateBuffer(vkBuffCI, m_Desc.Name);
VkMemoryRequirements MemReqs = LogicalDevice.GetBufferMemoryRequirements(m_VulkanBuffer);
uint32_t MemoryTypeIndex = PhysicalDevice.GetMemoryTypeIndex(MemReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VERIFY(IsPowerOfTwo(MemReqs.alignment), "Alignment is not power of 2!");
m_MemoryAllocation = pRenderDeviceVk->AllocateMemory(MemReqs.size, MemReqs.alignment, MemoryTypeIndex, VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT);
m_MemoryAlignedOffset = AlignUp(VkDeviceSize{m_MemoryAllocation.UnalignedOffset}, MemReqs.alignment);
VERIFY(m_MemoryAllocation.Size >= MemReqs.size + (m_MemoryAlignedOffset - m_MemoryAllocation.UnalignedOffset), "Size of memory allocation is too small");
auto Memory = m_MemoryAllocation.Page->GetVkMemory();
auto err = LogicalDevice.BindBufferMemory(m_VulkanBuffer, Memory, m_MemoryAlignedOffset);
CHECK_VK_ERROR_AND_THROW(err, "Failed to bind buffer memory");
VkAccelerationStructureCreateInfoKHR vkAccelStrCI = {};
vkAccelStrCI.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_CREATE_INFO_KHR;
vkAccelStrCI.createFlags = 0;
vkAccelStrCI.buffer = m_VulkanBuffer;
vkAccelStrCI.offset = 0;
vkAccelStrCI.size = AccelStructSize;
vkAccelStrCI.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
m_VulkanTLAS = LogicalDevice.CreateAccelStruct(vkAccelStrCI, m_Desc.Name);
m_DeviceAddress = LogicalDevice.GetAccelerationStructureDeviceAddress(m_VulkanTLAS);
SetState(RESOURCE_STATE_BUILD_AS_READ);
}
TopLevelASVkImpl::TopLevelASVkImpl(IReferenceCounters* pRefCounters,
RenderDeviceVkImpl* pRenderDeviceVk,
const TopLevelASDesc& Desc,
RESOURCE_STATE InitialState,
VkAccelerationStructureKHR vkTLAS) :
TTopLevelASBase{pRefCounters, pRenderDeviceVk, Desc},
m_VulkanTLAS{vkTLAS}
{
SetState(InitialState);
m_DeviceAddress = pRenderDeviceVk->GetLogicalDevice().GetAccelerationStructureDeviceAddress(m_VulkanTLAS);
}
TopLevelASVkImpl::~TopLevelASVkImpl()
{
// Vk object can only be destroyed when it is no longer used by the GPU
if (m_VulkanTLAS != VK_NULL_HANDLE)
m_pDevice->SafeReleaseDeviceObject(std::move(m_VulkanTLAS), m_Desc.CommandQueueMask);
if (m_VulkanBuffer != VK_NULL_HANDLE)
m_pDevice->SafeReleaseDeviceObject(std::move(m_VulkanBuffer), m_Desc.CommandQueueMask);
if (m_MemoryAllocation.Page != nullptr)
m_pDevice->SafeReleaseDeviceObject(std::move(m_MemoryAllocation), m_Desc.CommandQueueMask);
}
} // namespace Diligent
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