[vlc-devel] [PATCH 3/6] vout/vulkan: add X11 extension module

[Niklas Haas]

From: Niklas Haas <git at haasn.xyz>

---
 modules/video_output/Makefile.am           |  9 +++
 modules/video_output/vulkan/platform_xcb.c | 71 ++++++++++++++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 modules/video_output/vulkan/platform_xcb.c

diff --git a/modules/video_output/Makefile.am b/modules/video_output/Makefile.am
index ec7273b9fe..96ee30c336 100644
--- a/modules/video_output/Makefile.am
+++ b/modules/video_output/Makefile.am
@@ -140,8 +140,17 @@ libvk_plugin_la_SOURCES = $(VULKAN_COMMONSOURCES) video_output/vulkan/display.c
 libvk_plugin_la_CFLAGS = $(AM_CFLAGS) $(VULKAN_COMMONCFLAGS)
 libvk_plugin_la_LIBADD = $(VULKAN_COMMONLIBS)
 
+libvk_x11_plugin_la_SOURCES = $(VULKAN_COMMONSOURCES) video_output/vulkan/surface.c \
+			      video_output/vulkan/platform_xcb.c
+libvk_x11_plugin_la_CFLAGS = $(AM_CFLAGS) $(XCB_CFLAGS) $(VULKAN_COMMONCFLAGS) \
+			     -DVK_USE_PLATFORM_XCB_KHR -DPLATFORM_NAME=X11
+libvk_x11_plugin_la_LIBADD = $(VULKAN_COMMONLIBS) $(XCB_LIBS)
+
 if HAVE_VULKAN
 vout_LTLIBRARIES += libvk_plugin.la
+if HAVE_XCB
+vout_LTLIBRARIES += libvk_x11_plugin.la
+endif
 endif
 
 ### XCB ###
diff --git a/modules/video_output/vulkan/platform_xcb.c b/modules/video_output/vulkan/platform_xcb.c
new file mode 100644
index 0000000000..a5f250a241
--- /dev/null
+++ b/modules/video_output/vulkan/platform_xcb.c
@@ -0,0 +1,71 @@
+/**
+ * @file platform_xcb.c
+ * @brief Vulkan platform-specific code for X11/xcb
+ */
+/*****************************************************************************
+ * Copyright © 2018 Niklas Haas
+ *
+ * This program 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 program 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 program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#include "platform.h"
+
+int vlc_vk_InitPlatform(vlc_vk_t *vk)
+{
+    if (vk->window->type != VOUT_WINDOW_TYPE_XID)
+        return VLC_EGENERIC;
+
+    const char *display = vk->window->display.x11;
+    xcb_connection_t *conn = vk->platform_sys = xcb_connect(display, NULL);
+    if (xcb_connection_has_error(conn))
+    {
+        msg_Err(vk, "Failed connecting to X server (%s)",
+                display ? display : "default");
+        xcb_disconnect(conn);
+        return VLC_EGENERIC;
+    }
+
+    return VLC_SUCCESS;
+}
+
+void vlc_vk_ClosePlatform(vlc_vk_t *vk)
+{
+    xcb_connection_t *conn = vk->platform_sys;
+
+    if (conn)
+        xcb_disconnect(conn);
+}
+
+const char * const vlc_vk_PlatformExt = VK_KHR_XCB_SURFACE_EXTENSION_NAME;
+
+int vlc_vk_CreateSurface(vlc_vk_t *vk)
+{
+    VkInstance vkinst = vk->instance->instance;
+    xcb_connection_t *conn = vk->platform_sys;
+
+    VkXcbSurfaceCreateInfoKHR xinfo = {
+         .sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR,
+         .window = (xcb_window_t) vk->window->handle.xid,
+         .connection = conn,
+    };
+
+    VkResult res = vkCreateXcbSurfaceKHR(vkinst, &xinfo, NULL, &vk->surface);
+    if (res != VK_SUCCESS) {
+        msg_Err(vk, "Failed creating XCB surface");
+        return VLC_EGENERIC;
+    }
+
+    return VLC_SUCCESS;
+}
-- 
2.19.1