[gtk/import-dmabuf: 1/3] Add an api to turn dmabufs into textures

[Matthias Clasen <matthiasc src gnome org>]

commit ad91d213c3760998b68d2b4661e602797d118cc7
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 7 21:31:03 2021 -0400

    Add an api to turn dmabufs into textures

 gdk/gdkglcontext.c        | 18 ++++++++++++++++++
 gdk/gdkglcontext.h        |  9 +++++++++
 gdk/gdkglcontextprivate.h | 12 ++++++++++--
 3 files changed, 37 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkglcontext.c b/gdk/gdkglcontext.c
index 7c3c0a0a79..0c41dba41c 100644
--- a/gdk/gdkglcontext.c
+++ b/gdk/gdkglcontext.c
@@ -1258,3 +1258,21 @@ gdk_gl_context_use_es_bgra (GdkGLContext *context)
 
   return FALSE;
 }
+
+GdkTexture *
+gdk_gl_context_import_dmabuf (GdkGLContext *context,
+                              int           fd,
+                              int           fourcc,
+                              int           width,
+                              int           height,
+                              int           offset,
+                              int           stride)
+{
+  if (GDK_GL_CONTEXT_GET_CLASS (context)->import_dmabuf)
+    return GDK_GL_CONTEXT_GET_CLASS (context)->import_dmabuf (context,
+                                                              fd, fourcc,
+                                                              width, height,
+                                                              offset, stride);
+
+  return NULL;
+}
diff --git a/gdk/gdkglcontext.h b/gdk/gdkglcontext.h
index 10bac82e9b..84770cb47b 100644
--- a/gdk/gdkglcontext.h
+++ b/gdk/gdkglcontext.h
@@ -90,6 +90,15 @@ GdkGLContext *          gdk_gl_context_get_current              (void);
 GDK_AVAILABLE_IN_ALL
 void                    gdk_gl_context_clear_current            (void);
 
+GDK_AVAILABLE_IN_4_4
+GdkTexture *            gdk_gl_context_import_dmabuf (GdkGLContext *context,
+                                                      int           fd,
+                                                      int           fourcc,
+                                                      int           width,
+                                                      int           height,
+                                                      int           offset,
+                                                      int           stride);
+
 G_END_DECLS
 
 #endif /* __GDK_GL_CONTEXT_H__ */
diff --git a/gdk/gdkglcontextprivate.h b/gdk/gdkglcontextprivate.h
index 07310eebfa..b7b4d90c07 100644
--- a/gdk/gdkglcontextprivate.h
+++ b/gdk/gdkglcontextprivate.h
@@ -45,10 +45,18 @@ struct _GdkGLContextClass
 {
   GdkDrawContextClass parent_class;
 
-  gboolean (* realize) (GdkGLContext *context,
-                        GError **error);
+  gboolean (* realize) (GdkGLContext  *context,
+                        GError       **error);
 
   cairo_region_t * (* get_damage) (GdkGLContext *context);
+
+  GdkTexture * (* import_dmabuf) (GdkGLContext *context,
+                                  int           fd,
+                                  int           fourcc,
+                                  int           width,
+                                  int           height,
+                                  int           offset,
+                                  int           stride);
 };
 
 typedef struct {