egl_dri2: Add a function to let platform code return dri drawable from _EGLSurface

dri3 for EGL will use different struct other than dri2_egl_surface for
an EGL surface, the common code only uses __DRIdrawable from that
struct, so instead of converting _EGLSurface to dri2_egl_surface, let
the platform code return the __DRIdrawable by its own (although the
current platforms use the same function).

v2: From Martin Peres
 - convert to the new drawable interface (Kristian)

Signed-off-by: Boyan Ding <[email protected]>
Signed-off-by: Martin Peres <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index 0e837b3eb8b..c3c9fc0166c 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -145,6 +145,8 @@ struct dri2_egl_display_vtbl {
    EGLBoolean (*get_sync_values)(_EGLDisplay *display, _EGLSurface *surface,
                                  EGLuint64KHR *ust, EGLuint64KHR *msc,
                                  EGLuint64KHR *sbc);
+
+   __DRIdrawable *(*get_dri_drawable)(_EGLSurface *surf);
 };
 
 struct dri2_egl_display
@@ -327,6 +329,9 @@ dri2_load_driver_swrast(_EGLDisplay *disp);
 EGLBoolean
 dri2_create_screen(_EGLDisplay *disp);
 
+__DRIdrawable *
+dri2_surface_get_dri_drawable(_EGLSurface *surf);
+
 __DRIimage *
 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data);