180 lines
8.4 KiB
C
180 lines
8.4 KiB
C
/*
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* Copyright 2021 Hans-Kristian Arntzen for Valve Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define VKD3D_DBG_CHANNEL VKD3D_DBG_CHANNEL_API
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#include "vkd3d_private.h"
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void vkd3d_acceleration_structure_build_info_cleanup(
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struct vkd3d_acceleration_structure_build_info *info)
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{
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if (info->primitive_counts != info->primitive_counts_stack)
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vkd3d_free(info->primitive_counts);
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if (info->geometries != info->geometries_stack)
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vkd3d_free(info->geometries);
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if (info->build_range_ptrs != info->build_range_ptr_stack)
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vkd3d_free(info->build_range_ptrs);
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if (info->build_ranges != info->build_range_stack)
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vkd3d_free(info->build_ranges);
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}
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static VkBuildAccelerationStructureFlagsKHR d3d12_build_flags_to_vk(
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D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAGS flags)
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{
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VkBuildAccelerationStructureFlagsKHR vk_flags = 0;
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if (flags & D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_ALLOW_COMPACTION)
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vk_flags |= VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_COMPACTION_BIT_KHR;
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if (flags & D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_ALLOW_UPDATE)
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vk_flags |= VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_UPDATE_BIT_KHR;
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if (flags & D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_MINIMIZE_MEMORY)
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vk_flags |= VK_BUILD_ACCELERATION_STRUCTURE_LOW_MEMORY_BIT_KHR;
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if (flags & D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_PREFER_FAST_BUILD)
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vk_flags |= VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_BUILD_BIT_KHR;
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if (flags & D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_PREFER_FAST_TRACE)
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vk_flags |= VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
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return vk_flags;
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}
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bool vkd3d_acceleration_structure_convert_inputs(
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struct vkd3d_acceleration_structure_build_info *info,
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const D3D12_BUILD_RAYTRACING_ACCELERATION_STRUCTURE_INPUTS *desc)
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{
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VkAccelerationStructureGeometryTrianglesDataKHR *triangles;
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VkAccelerationStructureBuildGeometryInfoKHR *build_info;
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VkAccelerationStructureGeometryAabbsDataKHR *aabbs;
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const D3D12_RAYTRACING_GEOMETRY_DESC *geom_desc;
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unsigned int i;
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build_info = &info->build_info;
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memset(build_info, 0, sizeof(*build_info));
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build_info->sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_BUILD_GEOMETRY_INFO_KHR;
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if (desc->Type == D3D12_RAYTRACING_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL)
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build_info->type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
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else
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build_info->type = VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR;
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build_info->flags = d3d12_build_flags_to_vk(desc->Flags);
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if (desc->Flags & D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_PERFORM_UPDATE)
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build_info->mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR;
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else
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build_info->mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR;
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info->geometries = info->geometries_stack;
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info->primitive_counts = info->primitive_counts_stack;
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info->build_ranges = info->build_range_stack;
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info->build_range_ptrs = info->build_range_ptr_stack;
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if (desc->Type == D3D12_RAYTRACING_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL)
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{
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memset(info->geometries, 0, sizeof(*info->geometries));
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info->geometries[0].sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_KHR;
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info->geometries[0].geometryType = VK_GEOMETRY_TYPE_INSTANCES_KHR;
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info->geometries[0].geometry.instances.sType =
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VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_INSTANCES_DATA_KHR;
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info->geometries[0].geometry.instances.arrayOfPointers =
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desc->DescsLayout == D3D12_ELEMENTS_LAYOUT_ARRAY_OF_POINTERS ? VK_TRUE : VK_FALSE;
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info->geometries[0].geometry.instances.data.deviceAddress = desc->InstanceDescs;
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info->primitive_counts = info->primitive_counts_stack;
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info->primitive_counts[0] = desc->NumDescs;
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build_info->geometryCount = 1;
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}
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else
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{
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if (desc->NumDescs <= VKD3D_BUILD_INFO_STACK_COUNT)
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{
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memset(info->geometries, 0, sizeof(*info->geometries) * desc->NumDescs);
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memset(info->primitive_counts, 0, sizeof(*info->primitive_counts) * desc->NumDescs);
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}
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else
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{
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info->geometries = vkd3d_calloc(desc->NumDescs, sizeof(*info->geometries));
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info->primitive_counts = vkd3d_calloc(desc->NumDescs, sizeof(*info->primitive_counts));
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info->build_ranges = vkd3d_malloc(desc->NumDescs * sizeof(*info->build_ranges));
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info->build_range_ptrs = vkd3d_malloc(desc->NumDescs * sizeof(*info->build_range_ptrs));
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}
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build_info->geometryCount = desc->NumDescs;
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for (i = 0; i < desc->NumDescs; i++)
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{
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info->geometries[i].sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_KHR;
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if (desc->DescsLayout == D3D12_ELEMENTS_LAYOUT_ARRAY_OF_POINTERS)
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geom_desc = desc->ppGeometryDescs[i];
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else
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geom_desc = &desc->pGeometryDescs[i];
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switch (geom_desc->Type)
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{
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case D3D12_RAYTRACING_GEOMETRY_TYPE_TRIANGLES:
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info->geometries[i].geometryType = VK_GEOMETRY_TYPE_TRIANGLES_KHR;
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triangles = &info->geometries[i].geometry.triangles;
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triangles->sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_TRIANGLES_DATA_KHR;
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triangles->indexData.deviceAddress = geom_desc->Triangles.IndexBuffer;
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if (geom_desc->Triangles.IndexBuffer)
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{
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triangles->indexType =
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geom_desc->Triangles.IndexFormat == DXGI_FORMAT_R16_UINT ?
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VK_INDEX_TYPE_UINT16 : VK_INDEX_TYPE_UINT32;
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info->primitive_counts[i] = geom_desc->Triangles.IndexCount / 3;
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}
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else
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{
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info->primitive_counts[i] = geom_desc->Triangles.VertexCount / 3;
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triangles->indexType = VK_INDEX_TYPE_NONE_KHR;
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}
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triangles->maxVertex = max(1, geom_desc->Triangles.VertexCount) - 1;
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triangles->vertexStride = geom_desc->Triangles.VertexBuffer.StrideInBytes;
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triangles->vertexFormat = vkd3d_get_vk_format(geom_desc->Triangles.VertexFormat);
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triangles->vertexData.deviceAddress = geom_desc->Triangles.VertexBuffer.StartAddress;
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triangles->transformData.deviceAddress = geom_desc->Triangles.Transform3x4;
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break;
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case D3D12_RAYTRACING_GEOMETRY_TYPE_PROCEDURAL_PRIMITIVE_AABBS:
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info->geometries[i].geometryType = VK_GEOMETRY_TYPE_AABBS_KHR;
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aabbs = &info->geometries[i].geometry.aabbs;
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aabbs->sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_AABBS_DATA_KHR;
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aabbs->stride = geom_desc->AABBs.AABBs.StrideInBytes;
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aabbs->data.deviceAddress = geom_desc->AABBs.AABBs.StartAddress;
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info->primitive_counts[i] = geom_desc->AABBs.AABBCount;
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break;
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default:
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FIXME("Unsupported geometry type %u.\n", geom_desc->Type);
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return false;
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}
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}
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}
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for (i = 0; i < build_info->geometryCount; i++)
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{
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info->build_range_ptrs[i] = &info->build_ranges[i];
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info->build_ranges[i].primitiveCount = info->primitive_counts[i];
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info->build_ranges[i].firstVertex = 0;
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info->build_ranges[i].primitiveOffset = 0;
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info->build_ranges[i].transformOffset = 0;
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}
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build_info->pGeometries = info->geometries;
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return true;
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}
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