From f6e800172b11a25ed8bb3a62e060559ccf3f97e2 Mon Sep 17 00:00:00 2001
From: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Date: Wed, 15 Sep 2021 18:33:07 +0300
Subject: [PATCH] winewayland.drv: Add skeleton Vulkan driver.

---
 dlls/winewayland.drv/Makefile.in       |  1 +
 dlls/winewayland.drv/vulkan.c          | 80 ++++++++++++++++++++++++++++++++++
 dlls/winewayland.drv/waylanddrv.h      |  1 +
 dlls/winewayland.drv/waylanddrv_main.c |  3 +-
 4 files changed, 84 insertions(+), 1 deletion(-)
 create mode 100644 dlls/winewayland.drv/vulkan.c

diff --git a/dlls/winewayland.drv/Makefile.in b/dlls/winewayland.drv/Makefile.in
index 95ddbcedf8b..fa2beaad79c 100644
--- a/dlls/winewayland.drv/Makefile.in
+++ b/dlls/winewayland.drv/Makefile.in
@@ -8,6 +8,7 @@ SOURCES = \
 	dllmain.c \
 	version.rc \
 	viewporter.xml \
+	vulkan.c \
 	wayland.c \
 	wayland_keyboard.c \
 	wayland_output.c \
diff --git a/dlls/winewayland.drv/vulkan.c b/dlls/winewayland.drv/vulkan.c
new file mode 100644
index 00000000000..f807256c9e4
--- /dev/null
+++ b/dlls/winewayland.drv/vulkan.c
@@ -0,0 +1,80 @@
+/* WAYLANDDRV Vulkan implementation
+ *
+ * Copyright 2017 Roderick Colenbrander
+ * Copyright 2021 Alexandros Frantzis
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#if 0
+#pragma makedep unix
+#endif
+
+#include "config.h"
+
+#include <dlfcn.h>
+
+#include "waylanddrv.h"
+#include "wine/debug.h"
+
+#define VK_NO_PROTOTYPES
+#define WINE_VK_HOST
+
+#include "wine/vulkan.h"
+#include "wine/vulkan_driver.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(vulkan);
+
+#ifdef SONAME_LIBVULKAN
+
+static void *vulkan_handle;
+
+static void wine_vk_init(void)
+{
+    if (!(vulkan_handle = dlopen(SONAME_LIBVULKAN, RTLD_NOW)))
+        ERR("Failed to load %s.\n", SONAME_LIBVULKAN);
+}
+
+static const struct vulkan_funcs vulkan_funcs;
+
+/**********************************************************************
+ *           WAYLAND_wine_get_vulkan_driver
+ */
+const struct vulkan_funcs *WAYLAND_wine_get_vulkan_driver(UINT version)
+{
+    static pthread_once_t init_once = PTHREAD_ONCE_INIT;
+
+    if (version != WINE_VULKAN_DRIVER_VERSION)
+    {
+        ERR("version mismatch, vulkan wants %u but driver has %u\n", version, WINE_VULKAN_DRIVER_VERSION);
+        return NULL;
+    }
+
+    pthread_once(&init_once, wine_vk_init);
+    if (vulkan_handle)
+        return &vulkan_funcs;
+
+    return NULL;
+}
+
+#else /* No vulkan */
+
+const struct vulkan_funcs *WAYLAND_wine_get_vulkan_driver(UINT version)
+{
+    ERR("Wine was built without Vulkan support.\n");
+    return NULL;
+}
+
+#endif /* SONAME_LIBVULKAN */
diff --git a/dlls/winewayland.drv/waylanddrv.h b/dlls/winewayland.drv/waylanddrv.h
index 6bb30447f30..9bc6aedf356 100644
--- a/dlls/winewayland.drv/waylanddrv.h
+++ b/dlls/winewayland.drv/waylanddrv.h
@@ -297,5 +297,6 @@ void WAYLAND_WindowPosChanged(HWND hwnd, HWND insert_after, UINT swp_flags,
 BOOL WAYLAND_WindowPosChanging(HWND hwnd, HWND insert_after, UINT swp_flags,
                                const RECT *window_rect, const RECT *client_rect,
                                RECT *visible_rect, struct window_surface **surface) DECLSPEC_HIDDEN;
+const struct vulkan_funcs *WAYLAND_wine_get_vulkan_driver(UINT version) DECLSPEC_HIDDEN;
 
 #endif /* __WINE_WAYLANDDRV_H */
diff --git a/dlls/winewayland.drv/waylanddrv_main.c b/dlls/winewayland.drv/waylanddrv_main.c
index 7151d7b931a..be898f9e2c3 100644
--- a/dlls/winewayland.drv/waylanddrv_main.c
+++ b/dlls/winewayland.drv/waylanddrv_main.c
@@ -38,7 +38,8 @@ static const struct user_driver_funcs waylanddrv_funcs =
     .pUpdateDisplayDevices = WAYLAND_UpdateDisplayDevices,
     .pWindowMessage = WAYLAND_WindowMessage,
     .pWindowPosChanged = WAYLAND_WindowPosChanged,
-    .pWindowPosChanging = WAYLAND_WindowPosChanging
+    .pWindowPosChanging = WAYLAND_WindowPosChanging,
+    .pwine_get_vulkan_driver = WAYLAND_wine_get_vulkan_driver,
 };
 
 static NTSTATUS waylanddrv_unix_init(void *arg)
-- 
2.11.4.GIT