[Qemu-devel] [PATCH 3/4] gtk-egl: add scanout_dmabuf support

[Gerd Hoffmann <kraxel@redhat.com>]

Add support for dmabuf scanouts to gtk-egl.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 include/ui/gtk.h |  4 ++++
 ui/gtk-egl.c     | 23 +++++++++++++++++++++++
 ui/gtk.c         |  2 ++
 3 files changed, 29 insertions(+)

diff --git a/include/ui/gtk.h b/include/ui/gtk.h
index f6dafc5961..84c992c227 100644
--- a/include/ui/gtk.h
+++ b/include/ui/gtk.h
@@ -113,6 +113,10 @@ void gd_egl_scanout_texture(DisplayChangeListener *dcl,
                             uint32_t backing_height,
                             uint32_t x, uint32_t y,
                             uint32_t w, uint32_t h);
+void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
+                           QemuDmaBuf *dmabuf);
+void gd_egl_release_dmabuf(DisplayChangeListener *dcl,
+                           QemuDmaBuf *dmabuf);
 void gd_egl_scanout_flush(DisplayChangeListener *dcl,
                           uint32_t x, uint32_t y, uint32_t w, uint32_t h);
 void gtk_egl_init(void);
diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index eb86c26a1d..2c83c22d04 100644
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -194,6 +194,29 @@ void gd_egl_scanout_texture(DisplayChangeListener *dcl,
                          backing_id, false);
 }
 
+void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
+                           QemuDmaBuf *dmabuf)
+{
+#ifdef CONFIG_OPENGL_DMABUF
+    egl_dmabuf_import_texture(dmabuf);
+    if (!dmabuf->texture) {
+        return;
+    }
+
+    gd_egl_scanout_texture(dcl, dmabuf->texture,
+                           false, dmabuf->width, dmabuf->height,
+                           0, 0, dmabuf->width, dmabuf->height);
+#endif
+}
+
+void gd_egl_release_dmabuf(DisplayChangeListener *dcl,
+                           QemuDmaBuf *dmabuf)
+{
+#ifdef CONFIG_OPENGL_DMABUF
+    egl_dmabuf_release_texture(dmabuf);
+#endif
+}
+
 void gd_egl_scanout_flush(DisplayChangeListener *dcl,
                           uint32_t x, uint32_t y, uint32_t w, uint32_t h)
 {
diff --git a/ui/gtk.c b/ui/gtk.c
index d1101406d5..3edb9b2dde 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -744,6 +744,8 @@ static const DisplayChangeListenerOps dcl_egl_ops = {
     .dpy_gl_ctx_get_current  = qemu_egl_get_current_context,
     .dpy_gl_scanout_disable  = gd_egl_scanout_disable,
     .dpy_gl_scanout_texture  = gd_egl_scanout_texture,
+    .dpy_gl_scanout_dmabuf   = gd_egl_scanout_dmabuf,
+    .dpy_gl_release_dmabuf   = gd_egl_release_dmabuf,
     .dpy_gl_update           = gd_egl_scanout_flush,
 };
 
-- 
2.9.3