[PATCH 4/4] d3d12: Implement D3D12CreateDevice().

[Józef Kucia]

Signed-off-by: Józef Kucia 
---

Adds initial "headless" support for D3D12 (no DXGI).

---
 dlls/d3d12/Makefile.in  |  1 +
 dlls/d3d12/d3d12_main.c | 94 +++++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 93 insertions(+), 2 deletions(-)

diff --git a/dlls/d3d12/Makefile.in b/dlls/d3d12/Makefile.in
index 458f3e202da6..62fb01a21270 100644
--- a/dlls/d3d12/Makefile.in
+++ b/dlls/d3d12/Makefile.in
@@ -1,5 +1,6 @@
 MODULE    = d3d12.dll
 IMPORTLIB = d3d12
+IMPORTS   = gdi32 user32
 EXTRALIBS = $(VKD3D_LIBS)
 EXTRAINCL = $(VKD3D_CFLAGS)

diff --git a/dlls/d3d12/d3d12_main.c b/dlls/d3d12/d3d12_main.c
index bb17cbcd2dbe..c1dc8c835263 100644
--- a/dlls/d3d12/d3d12_main.c
+++ b/dlls/d3d12/d3d12_main.c
@@ -26,7 +26,9 @@
 #define WINE_VK_ALIGN(x)

#include "wine/debug.h"
+#include "wine/heap.h"
 #include "wine/vulkan.h"
+#include "wine/vulkan_driver.h"

#include "d3d12.h"

@@ -41,13 +43,101 @@ HRESULT WINAPI D3D12GetDebugInterface(REFIID iid, void **debug)
     return E_NOTIMPL;
 }

+static HRESULT d3d12_signal_event(HANDLE event)
+{
+    return SetEvent(event) ? S_OK : E_FAIL;
+}
+
+struct d3d12_thread_data
+{
+    PFN_vkd3d_thread main_pfn;
+    void *data;
+};
+
+static DWORD WINAPI d3d12_thread_main(void *data)
+{
+    struct d3d12_thread_data *thread_data = data;
+
+    thread_data->main_pfn(thread_data->data);
+    heap_free(thread_data);
+    return 0;
+}
+
+static void *d3d12_create_thread(PFN_vkd3d_thread main_pfn, void *data)
+{
+    struct d3d12_thread_data *thread_data;
+    HANDLE thread;
+
+    if (!(thread_data = heap_alloc(sizeof(*thread_data))))
+    {
+        ERR("Failed to allocate thread data.\n");
+        return NULL;
+    }
+
+    thread_data->main_pfn = main_pfn;
+    thread_data->data = data;
+
+    if (!(thread = CreateThread(NULL, 0, d3d12_thread_main, thread_data, 0, NULL)))
+        heap_free(thread_data);
+
+    return thread;
+}
+
+static HRESULT d3d12_join_thread(void *handle)
+{
+    HANDLE thread = handle;
+    DWORD ret;
+
+    if ((ret = WaitForSingleObject(thread, INFINITE)) != WAIT_OBJECT_0)
+        ERR("Failed to wait for thread, ret %#x.\n", ret);
+    CloseHandle(thread);
+    return ret == WAIT_OBJECT_0 ? S_OK : E_FAIL;
+}
+
+static const struct vulkan_funcs *get_vk_funcs(void)
+{
+    const struct vulkan_funcs *vk_funcs;
+    HDC hdc;
+
+    hdc = GetDC(0);
+    vk_funcs = __wine_get_vulkan_driver(hdc, WINE_VULKAN_DRIVER_VERSION);
+    ReleaseDC(0, hdc);
+    return vk_funcs;
+}
+
 HRESULT WINAPI D3D12CreateDevice(IUnknown *adapter, D3D_FEATURE_LEVEL minimum_feature_level,
         REFIID iid, void **device)
 {
-    FIXME("adapter %p, minimum_feature_level %#x, iid %s, device %p stub!\n",
+    struct vkd3d_instance_create_info instance_create_info;
+    struct vkd3d_device_create_info device_create_info;
+    const struct vulkan_funcs *vk_funcs;
+
+    TRACE("adapter %p, minimum_feature_level %#x, iid %s, device %p.\n",
             adapter, minimum_feature_level, debugstr_guid(iid), device);

-    return E_NOTIMPL;
+    if (!(vk_funcs = get_vk_funcs()))
+    {
+        ERR("Failed to get Wine Vulkan driver.\n");
+        return E_FAIL;
+    }
+
+    FIXME("Ignoring adapter %p.\n", adapter);
+
+    memset(&instance_create_info, 0, sizeof(instance_create_info));
+    instance_create_info.type = VKD3D_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+    instance_create_info.pfn_signal_event = d3d12_signal_event;
+    instance_create_info.pfn_create_thread = d3d12_create_thread;
+    instance_create_info.pfn_join_thread = d3d12_join_thread;
+    instance_create_info.wchar_size = sizeof(WCHAR);
+    instance_create_info.pfn_vkGetInstanceProcAddr
+            = (PFN_vkGetInstanceProcAddr)vk_funcs->p_vkGetInstanceProcAddr;
+
+    memset(&device_create_info, 0, sizeof(device_create_info));
+    device_create_info.type = VKD3D_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+    device_create_info.minimum_feature_level = minimum_feature_level;
+    device_create_info.instance_create_info = &instance_create_info;
+
+    return vkd3d_create_device(&device_create_info, iid, device);
 }

HRESULT WINAPI D3D12CreateRootSignatureDeserializer(const void *data, SIZE_T data_size,