From e3fdfe5176e28c6b4548aeb860c1abaa1987ee57 Mon Sep 17 00:00:00 2001
From: skallweitNV <64953474+skallweitNV@users.noreply.github.com>
Date: Tue, 27 Feb 2024 17:42:39 +0100
Subject: add support for shared resources on vulkan/linux (#3636)

---
 tools/gfx/vulkan/vk-buffer.cpp | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

(limited to 'tools/gfx/vulkan/vk-buffer.cpp')

diff --git a/tools/gfx/vulkan/vk-buffer.cpp b/tools/gfx/vulkan/vk-buffer.cpp
index 9e1986b38..32c14bcb9 100644
--- a/tools/gfx/vulkan/vk-buffer.cpp
+++ b/tools/gfx/vulkan/vk-buffer.cpp
@@ -57,10 +57,12 @@ Result VKBufferHandleRAII::init(
 #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 =
@@ -71,10 +73,10 @@ Result VKBufferHandleRAII::init(
             extMemHandleType & VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_KHR
             ? &exportMemoryWin32HandleInfo
             : nullptr;
+#endif
         exportMemoryAllocateInfo.handleTypes = extMemHandleType;
         allocateInfo.pNext = &exportMemoryAllocateInfo;
     }
-#endif
     VkMemoryAllocateFlagsInfo flagInfo = { VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_FLAGS_INFO };
     if (usage & VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT)
     {
@@ -151,6 +153,22 @@ Result BufferResourceImpl::getSharedHandle(InteropHandle* outHandle)
     }
     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;
-- 
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