egl: store the native surface pointer in struct _egl_surface

Each platform stores this in a different place:
  - platform_drm uses dri2_surf->gbm_surf->base
  - platform_android uses dri2_surf->window
  - platform_wayland uses dri2_surf->wl_win
  - platform_x11 uses dri2_surf->drawable
  - platform_x11_dri3 uses dri3_surf->loader_drawable.drawable
  - haiku doesn't even store it!

We need access to the native surface since the specification asks us
to refuse creating a new surface if there's already an EGLSurface
associated with native_surface.

An alternative to this patch would be to create a new
API.GetNativeWindow callback that each platform would have to
implement. While that's something we can definitely do, I prefer
this approach.

Reviewed-by: Tapani Pälli <[email protected]>
Reviewed-by: Eric Engestrom <[email protected]>
Signed-off-by: Paulo Zanoni <[email protected]>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
index 7d96514f775..22257391d5c 100644
--- a/src/egl/main/eglsurface.c
+++ b/src/egl/main/eglsurface.c
@@ -334,7 +334,8 @@ _eglParseSurfaceAttribList(_EGLSurface *surf, const EGLint *attrib_list)
  */
 EGLBoolean
 _eglInitSurface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
-                _EGLConfig *conf, const EGLint *attrib_list)
+                _EGLConfig *conf, const EGLint *attrib_list,
+                void *native_surface)
 {
    const char *func;
    EGLint renderBuffer = EGL_BACK_BUFFER;
@@ -421,6 +422,8 @@ _eglInitSurface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
       surf->Height = MIN2(surf->Height, _EGL_MAX_PBUFFER_HEIGHT);
    }
 
+   surf->NativeSurface = native_surface;
+
    return EGL_TRUE;
 }