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// vk-buffer.cpp
#include "vk-buffer.h"
#include "vk-util.h"
#if SLANG_WINDOWS_FAMILY
#include <dxgi1_2.h>
#endif
namespace gfx
{
using namespace Slang;
namespace vk
{
Result VKBufferHandleRAII::init(
const VulkanApi& api,
Size bufferSize,
VkBufferUsageFlags usage,
VkMemoryPropertyFlags reqMemoryProperties,
bool isShared,
VkExternalMemoryHandleTypeFlagsKHR extMemHandleType)
{
assert(!isInitialized());
m_api = &api;
m_memory = VK_NULL_HANDLE;
m_buffer = VK_NULL_HANDLE;
VkBufferCreateInfo bufferCreateInfo = {VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO};
bufferCreateInfo.size = bufferSize;
bufferCreateInfo.usage = usage;
bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
VkExternalMemoryBufferCreateInfo externalMemoryBufferCreateInfo = {
VK_STRUCTURE_TYPE_EXTERNAL_MEMORY_BUFFER_CREATE_INFO};
if (isShared)
{
externalMemoryBufferCreateInfo.handleTypes = extMemHandleType;
bufferCreateInfo.pNext = &externalMemoryBufferCreateInfo;
}
SLANG_VK_RETURN_ON_FAIL(
api.vkCreateBuffer(api.m_device, &bufferCreateInfo, nullptr, &m_buffer));
VkMemoryRequirements memoryReqs = {};
api.vkGetBufferMemoryRequirements(api.m_device, m_buffer, &memoryReqs);
int memoryTypeIndex = api.findMemoryTypeIndex(memoryReqs.memoryTypeBits, reqMemoryProperties);
assert(memoryTypeIndex >= 0);
VkMemoryPropertyFlags actualMemoryProperites =
api.m_deviceMemoryProperties.memoryTypes[memoryTypeIndex].propertyFlags;
VkMemoryAllocateInfo allocateInfo = {VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO};
allocateInfo.allocationSize = memoryReqs.size;
allocateInfo.memoryTypeIndex = memoryTypeIndex;
#if SLANG_WINDOWS_FAMILY
VkExportMemoryWin32HandleInfoKHR exportMemoryWin32HandleInfo = {
VK_STRUCTURE_TYPE_EXPORT_MEMORY_WIN32_HANDLE_INFO_KHR};
#endif
VkExportMemoryAllocateInfoKHR exportMemoryAllocateInfo = {
VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO_KHR};
if (isShared)
{
#if SLANG_WINDOWS_FAMILY
exportMemoryWin32HandleInfo.pNext = nullptr;
exportMemoryWin32HandleInfo.pAttributes = nullptr;
exportMemoryWin32HandleInfo.dwAccess =
DXGI_SHARED_RESOURCE_READ | DXGI_SHARED_RESOURCE_WRITE;
exportMemoryWin32HandleInfo.name = NULL;
exportMemoryAllocateInfo.pNext =
extMemHandleType & VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_KHR
? &exportMemoryWin32HandleInfo
: nullptr;
#endif
exportMemoryAllocateInfo.handleTypes = extMemHandleType;
allocateInfo.pNext = &exportMemoryAllocateInfo;
}
VkMemoryAllocateFlagsInfo flagInfo = {VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_FLAGS_INFO};
if (usage & VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT)
{
flagInfo.deviceMask = 1;
flagInfo.flags = VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT;
flagInfo.pNext = allocateInfo.pNext;
allocateInfo.pNext = &flagInfo;
}
SLANG_VK_RETURN_ON_FAIL(api.vkAllocateMemory(api.m_device, &allocateInfo, nullptr, &m_memory));
SLANG_VK_RETURN_ON_FAIL(api.vkBindBufferMemory(api.m_device, m_buffer, m_memory, 0));
return SLANG_OK;
}
BufferResourceImpl::BufferResourceImpl(const IBufferResource::Desc& desc, DeviceImpl* renderer)
: Parent(desc), m_renderer(renderer)
{
assert(renderer);
}
BufferResourceImpl::~BufferResourceImpl()
{
if (sharedHandle.handleValue != 0)
{
#if SLANG_WINDOWS_FAMILY
CloseHandle((HANDLE)sharedHandle.handleValue);
#endif
}
}
DeviceAddress BufferResourceImpl::getDeviceAddress()
{
if (!m_buffer.m_api->vkGetBufferDeviceAddress)
return 0;
VkBufferDeviceAddressInfo info = {};
info.sType = VK_STRUCTURE_TYPE_BUFFER_DEVICE_ADDRESS_INFO;
info.buffer = m_buffer.m_buffer;
return (DeviceAddress)m_buffer.m_api->vkGetBufferDeviceAddress(m_buffer.m_api->m_device, &info);
}
Result BufferResourceImpl::getNativeResourceHandle(InteropHandle* outHandle)
{
outHandle->handleValue = (uint64_t)m_buffer.m_buffer;
outHandle->api = InteropHandleAPI::Vulkan;
return SLANG_OK;
}
Result BufferResourceImpl::getSharedHandle(InteropHandle* outHandle)
{
// Check if a shared handle already exists for this resource.
if (sharedHandle.handleValue != 0)
{
*outHandle = sharedHandle;
return SLANG_OK;
}
// If a shared handle doesn't exist, create one and store it.
#if SLANG_WINDOWS_FAMILY
VkMemoryGetWin32HandleInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_MEMORY_GET_WIN32_HANDLE_INFO_KHR;
info.pNext = nullptr;
info.memory = m_buffer.m_memory;
info.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT;
auto api = m_buffer.m_api;
PFN_vkGetMemoryWin32HandleKHR vkCreateSharedHandle;
vkCreateSharedHandle = api->vkGetMemoryWin32HandleKHR;
if (!vkCreateSharedHandle)
{
return SLANG_FAIL;
}
SLANG_VK_RETURN_ON_FAIL(
vkCreateSharedHandle(api->m_device, &info, (HANDLE*)&outHandle->handleValue));
#else
VkMemoryGetFdInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_MEMORY_GET_FD_INFO_KHR;
info.pNext = nullptr;
info.memory = m_buffer.m_memory;
info.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
auto api = m_buffer.m_api;
PFN_vkGetMemoryFdKHR vkCreateSharedHandle;
vkCreateSharedHandle = api->vkGetMemoryFdKHR;
if (!vkCreateSharedHandle)
{
return SLANG_FAIL;
}
SLANG_VK_RETURN_ON_FAIL(
vkCreateSharedHandle(api->m_device, &info, (int*)&outHandle->handleValue));
#endif
outHandle->api = InteropHandleAPI::Vulkan;
return SLANG_OK;
}
Result BufferResourceImpl::map(MemoryRange* rangeToRead, void** outPointer)
{
SLANG_UNUSED(rangeToRead);
auto api = m_buffer.m_api;
SLANG_VK_RETURN_ON_FAIL(
api->vkMapMemory(api->m_device, m_buffer.m_memory, 0, VK_WHOLE_SIZE, 0, outPointer));
return SLANG_OK;
}
Result BufferResourceImpl::unmap(MemoryRange* writtenRange)
{
SLANG_UNUSED(writtenRange);
auto api = m_buffer.m_api;
api->vkUnmapMemory(api->m_device, m_buffer.m_memory);
return SLANG_OK;
}
Result BufferResourceImpl::setDebugName(const char* name)
{
Parent::setDebugName(name);
auto api = m_buffer.m_api;
if (api->vkDebugMarkerSetObjectNameEXT)
{
VkDebugMarkerObjectNameInfoEXT nameDesc = {};
nameDesc.sType = VK_STRUCTURE_TYPE_DEBUG_MARKER_OBJECT_NAME_INFO_EXT;
nameDesc.object = (uint64_t)m_buffer.m_buffer;
nameDesc.objectType = VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_EXT;
nameDesc.pObjectName = name;
api->vkDebugMarkerSetObjectNameEXT(api->m_device, &nameDesc);
}
return SLANG_OK;
}
} // namespace vk
} // namespace gfx
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