Added vlc_gl_t::getProcAddress() declaration.

include/vlc_opengl.h

@@ -48,6 +48,7 @@ struct vlc_gl_t
     void (*swap)(vlc_gl_t *);
     int  (*lock)(vlc_gl_t *);
     void (*unlock)(vlc_gl_t *);
+    void*(*getProcAddress)(vlc_gl_t *, const char *);
 };
 
 enum {
@@ -80,4 +81,9 @@ static inline void vlc_gl_Swap(vlc_gl_t *gl)
     gl->swap(gl);
 }
 
+static inline void *vlc_gl_GetProcAddress(vlc_gl_t *gl, const char *name)
+{
+    return (gl->getProcAddress != NULL) ? gl->getProcAddress(gl, name) : NULL;
+}
+
 #endif /* VLC_GL_H */

modules/video_output/egl.c

@@ -195,6 +195,7 @@ static int Open (vlc_object_t *obj, const struct gl_api *api)
     gl->swap = SwapBuffers;
     gl->lock = NULL;
     gl->unlock = NULL;
+    gl->getProcAddress = NULL;
     return VLC_SUCCESS;
 
 error:

modules/video_output/ios.m

@@ -148,6 +148,7 @@ static int Open(vlc_object_t *this)
     sys->gl.lock = OpenglClean; // We don't do locking, but sometimes we need to cleanup the framebuffer
     sys->gl.unlock = NULL;
     sys->gl.swap = OpenglSwap;
+	sys->gl.getProcAddress = NULL;
     sys->gl.sys = sys;
 
     if (vout_display_opengl_Init(&sys->vgl, &vd->fmt, &sys->gl))

modules/video_output/macosx.m

@@ -187,6 +187,7 @@ static int Open(vlc_object_t *this)
     sys->gl.lock = OpenglLock;
     sys->gl.unlock = OpenglUnlock;
     sys->gl.swap = OpenglSwap;
+    sys->gl.getProcAddress = NULL;
     sys->gl.sys = sys;
 
     if (vout_display_opengl_Init(&sys->vgl, &vd->fmt, &sys->gl))

modules/video_output/msw/glwin32.c

@@ -111,6 +111,7 @@ static int Open(vlc_object_t *object)
     sys->gl.lock = NULL;
     sys->gl.unlock = NULL;
     sys->gl.swap = Swap;
+    sys->gl.getProcAddress = NULL;
     sys->gl.sys = vd;
 
     video_format_t fmt = vd->fmt;

modules/video_output/xcb/glx.c

@@ -362,6 +362,7 @@ static int Open (vlc_object_t *obj)
     sys->gl.lock = NULL;
     sys->gl.unlock = NULL;
     sys->gl.swap = SwapBuffers;
+    sys->gl.getProcAddress = NULL;
     sys->gl.sys = sys;
 
     if (vout_display_opengl_Init (&sys->vgl, &vd->fmt, &sys->gl))