xwayland/glamor: Add a GLAMOR GBM header

That will be used between the generic Xwayland GLAMOR functions and the
GBM implementation.

Move the definition of xwl_glamor_init_gbm() to that new header rather
than in the generic Xwayland GLAMOR header.

This is preparation work to eventually replace the xwl_egl_backend now
that we have only one backend left.

Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1386>

hw/xwayland/meson.build

@@ -107,7 +107,8 @@ if build_xwayland_glamor
               'xwayland-glamor.c',
               'xwayland-dmabuf.h',
               'xwayland-dmabuf.c',
-              'xwayland-glamor-gbm.c'
+              'xwayland-glamor-gbm.c',
+              'xwayland-glamor-gbm.h'
             ]
 
     if build_xv

hw/xwayland/xwayland-glamor-gbm.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2011-2014 Intel Corporation
+ * Copyright © 2024 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including
+ * the next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef XWAYLAND_GLAMOR_GBM_H
+#define XWAYLAND_GLAMOR_GBM_H
+
+#include <xwayland-config.h>
+
+#include <sys/types.h>
+
+#include "xwayland-types.h"
+
+void xwl_glamor_init_gbm(struct xwl_screen *xwl_screen);
+
+#endif /* XWAYLAND_GLAMOR_GBM_H */

hw/xwayland/xwayland-glamor.c

@@ -43,6 +43,7 @@
 
 #include "xwayland-dmabuf.h"
 #include "xwayland-glamor.h"
+#include "xwayland-glamor-gbm.h"
 #include "xwayland-screen.h"
 #include "xwayland-window.h"
 #include "xwayland-window-buffers.h"

hw/xwayland/xwayland-glamor.h

@@ -34,6 +34,7 @@
 #include <xf86drm.h>
 
 #include "xwayland-types.h"
+#include "xwayland-glamor-gbm.h"
 
 typedef enum _xwl_egl_backend_flags {
     XWL_EGL_BACKEND_NO_FLAG = 0,
@@ -145,8 +146,6 @@ PixmapPtr xwl_glamor_create_pixmap_for_window (struct xwl_window *xwl_window);
 Bool xwl_glamor_xv_init(ScreenPtr pScreen);
 #endif /* XV */
 
-void xwl_glamor_init_gbm(struct xwl_screen *xwl_screen);
-
 #endif /* XWL_HAS_GLAMOR */
 
 #endif /* XWAYLAND_GLAMOR_H */