egl: drop unused _EGLDriver from QuerySurface()
[mesa.git] / src / egl / drivers / dri2 / egl_dri2.c
index e4eb9f0cbc98536aaecafd241d5292ba3be83252..81df0d909eefcf23f07a759d091ef2a9d868dfc0 100644 (file)
@@ -644,7 +644,7 @@ dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 }
 
 EGLBoolean
-dri2_add_pbuffer_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
+dri2_add_pbuffer_configs_for_visuals(_EGLDisplay *disp)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    unsigned int format_count[ARRAY_SIZE(dri2_pbuffer_visuals)] = { 0 };
@@ -1136,13 +1136,13 @@ dri2_setup_extensions(_EGLDisplay *disp)
 }
 
 /**
- * Called via eglInitialize(), GLX_drv->API.Initialize().
+ * Called via eglInitialize(), drv->Initialize().
  *
  * This must be guaranteed to be called exactly once, even if eglInitialize is
  * called many times (without a eglTerminate in between).
  */
 static EGLBoolean
-dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
+dri2_initialize(_EGLDisplay *disp)
 {
    EGLBoolean ret = EGL_FALSE;
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -1168,22 +1168,22 @@ dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 
    switch (disp->Platform) {
    case _EGL_PLATFORM_SURFACELESS:
-      ret = dri2_initialize_surfaceless(drv, disp);
+      ret = dri2_initialize_surfaceless(disp);
       break;
    case _EGL_PLATFORM_DEVICE:
-      ret = dri2_initialize_device(drv, disp);
+      ret = dri2_initialize_device(disp);
       break;
    case _EGL_PLATFORM_X11:
-      ret = dri2_initialize_x11(drv, disp);
+      ret = dri2_initialize_x11(disp);
       break;
    case _EGL_PLATFORM_DRM:
-      ret = dri2_initialize_drm(drv, disp);
+      ret = dri2_initialize_drm(disp);
       break;
    case _EGL_PLATFORM_WAYLAND:
-      ret = dri2_initialize_wayland(drv, disp);
+      ret = dri2_initialize_wayland(disp);
       break;
    case _EGL_PLATFORM_ANDROID:
-      ret = dri2_initialize_android(drv, disp);
+      ret = dri2_initialize_android(disp);
       break;
    default:
       unreachable("Callers ensure we cannot get here.");
@@ -1305,16 +1305,16 @@ dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 }
 
 /**
- * Called via eglTerminate(), drv->API.Terminate().
+ * Called via eglTerminate(), drv->Terminate().
  *
  * This must be guaranteed to be called exactly once, even if eglTerminate is
  * called many times (without a eglInitialize in between).
  */
 static EGLBoolean
-dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
+dri2_terminate(_EGLDisplay *disp)
 {
    /* Release all non-current Context/Surfaces. */
-   _eglReleaseDisplayResources(drv, disp);
+   _eglReleaseDisplayResources(disp);
 
    dri2_display_release(disp);
 
@@ -1463,10 +1463,10 @@ dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
 }
 
 /**
- * Called via eglCreateContext(), drv->API.CreateContext().
+ * Called via eglCreateContext(), drv->CreateContext().
  */
 static _EGLContext *
-dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
+dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
                     _EGLContext *share_list, const EGLint *attrib_list)
 {
    struct dri2_egl_context *dri2_ctx;
@@ -1481,8 +1481,6 @@ dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
    unsigned num_attribs = NUM_ATTRIBS;
    uint32_t ctx_attribs[NUM_ATTRIBS];
 
-   (void) drv;
-
    dri2_ctx = malloc(sizeof *dri2_ctx);
    if (!dri2_ctx) {
       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
@@ -1638,10 +1636,10 @@ dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
 }
 
 /**
- * Called via eglDestroyContext(), drv->API.DestroyContext().
+ * Called via eglDestroyContext(), drv->DestroyContext().
  */
 static EGLBoolean
-dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
+dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
 {
    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -1695,14 +1693,14 @@ dri2_fini_surface(_EGLSurface *surf)
 }
 
 static EGLBoolean
-dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
+dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 
    if (!_eglPutSurface(surf))
       return EGL_TRUE;
 
-   return dri2_dpy->vtbl->destroy_surface(drv, disp, surf);
+   return dri2_dpy->vtbl->destroy_surface(disp, surf);
 }
 
 static void
@@ -1753,10 +1751,10 @@ dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
 }
 
 /**
- * Called via eglMakeCurrent(), drv->API.MakeCurrent().
+ * Called via eglMakeCurrent(), drv->MakeCurrent().
  */
 static EGLBoolean
-dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
+dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
                   _EGLSurface *rsurf, _EGLContext *ctx)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -1768,33 +1766,23 @@ dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
    _EGLSurface *tmp_dsurf, *tmp_rsurf;
    __DRIdrawable *ddraw, *rdraw;
    __DRIcontext *cctx;
-   EGLBoolean unbind;
+   EGLint egl_error = EGL_SUCCESS;
 
    if (!dri2_dpy)
       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
 
-   /* make new bindings */
-   if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
-      /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
+   /* make new bindings, set the EGL error otherwise */
+   if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
       return EGL_FALSE;
-   }
 
    if (old_ctx) {
+      __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
       old_disp = old_ctx->Resource.Display;
       old_dri2_dpy = dri2_egl_display(old_disp);
-   }
 
-   /* flush before context switch */
-   if (old_ctx)
+      /* flush before context switch */
       dri2_gl_flush();
 
-   ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
-   rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
-   cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
-
-   if (old_ctx) {
-      __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
-
       if (old_dsurf)
          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
 
@@ -1807,46 +1795,82 @@ dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
       dri2_dpy->core->unbindContext(old_cctx);
    }
 
-   unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
+   ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
+   rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
+   cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
 
-   if (!unbind && !dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
-      /* undo the previous _eglBindContext */
-      _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
-      assert(&dri2_ctx->base == ctx &&
-             tmp_dsurf == dsurf &&
-             tmp_rsurf == rsurf);
+   if (cctx || ddraw || rdraw) {
+      if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
+         _EGLContext *tmp_ctx;
 
-      if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
-          old_dri2_dpy->vtbl->set_shared_buffer_mode) {
-         old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
-      }
+         /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
+          * setting the error to EGL_BAD_MATCH is surely better than leaving it
+          * as EGL_SUCCESS.
+          */
+         egl_error = EGL_BAD_MATCH;
+
+         /* undo the previous _eglBindContext */
+         _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
+         assert(&dri2_ctx->base == ctx &&
+                tmp_dsurf == dsurf &&
+                tmp_rsurf == rsurf);
+
+         _eglPutSurface(dsurf);
+         _eglPutSurface(rsurf);
+         _eglPutContext(ctx);
+
+         _eglPutSurface(old_dsurf);
+         _eglPutSurface(old_rsurf);
+         _eglPutContext(old_ctx);
+
+         ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
+         rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
+         cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
+
+         /* undo the previous dri2_dpy->core->unbindContext */
+         if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
+            if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
+                old_dri2_dpy->vtbl->set_shared_buffer_mode) {
+               old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
+            }
 
-      _eglPutSurface(dsurf);
-      _eglPutSurface(rsurf);
-      _eglPutContext(ctx);
+            return _eglError(egl_error, "eglMakeCurrent");
+         }
 
-      _eglPutSurface(old_dsurf);
-      _eglPutSurface(old_rsurf);
-      _eglPutContext(old_ctx);
+         /* We cannot restore the same state as it was before calling
+          * eglMakeCurrent() and the spec isn't clear about what to do. We
+          * can prevent EGL from calling into the DRI driver with no DRI
+          * context bound.
+          */
+         dsurf = rsurf = NULL;
+         ctx = NULL;
 
-      /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
-       * setting the error to EGL_BAD_MATCH is surely better than leaving it
-       * as EGL_SUCCESS.
-       */
-      return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
-   }
+         _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
+         assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
+                tmp_rsurf == old_rsurf);
 
-   dri2_destroy_surface(drv, disp, old_dsurf);
-   dri2_destroy_surface(drv, disp, old_rsurf);
+         _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
+      } else {
+         /* dri2_dpy->core->bindContext succeeded, so take a reference on the
+          * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
+          * EGLDisplay is terminated and then initialized again while a
+          * context is still bound. See dri2_intitialize() for a more in depth
+          * explanation. */
+         dri2_dpy->ref_count++;
+      }
+   }
 
-   if (!unbind)
-      dri2_dpy->ref_count++;
+   dri2_destroy_surface(disp, old_dsurf);
+   dri2_destroy_surface(disp, old_rsurf);
 
    if (old_ctx) {
-      dri2_destroy_context(drv, disp, old_ctx);
+      dri2_destroy_context(disp, old_ctx);
       dri2_display_release(old_disp);
    }
 
+   if (egl_error != EGL_SUCCESS)
+      return _eglError(egl_error, "eglMakeCurrent");
+
    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
        dri2_dpy->vtbl->set_shared_buffer_mode) {
       /* Always update the shared buffer mode. This is obviously needed when
@@ -1871,48 +1895,46 @@ dri2_surface_get_dri_drawable(_EGLSurface *surf)
 }
 
 /*
- * Called from eglGetProcAddress() via drv->API.GetProcAddress().
+ * Called from eglGetProcAddress() via drv->GetProcAddress().
  */
 static _EGLProc
-dri2_get_proc_address(_EGLDriver *drv, const char *procname)
+dri2_get_proc_address(const _EGLDriver *drv, const char *procname)
 {
    return _glapi_get_proc_address(procname);
 }
 
 static _EGLSurface*
-dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
-                           _EGLConfig *conf, void *native_window,
-                           const EGLint *attrib_list)
+dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
+                           void *native_window, const EGLint *attrib_list)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
-   return dri2_dpy->vtbl->create_window_surface(drv, disp, conf, native_window,
+   return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
                                                 attrib_list);
 }
 
 static _EGLSurface*
-dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
-                           _EGLConfig *conf, void *native_pixmap,
-                           const EGLint *attrib_list)
+dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
+                           void *native_pixmap, const EGLint *attrib_list)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    if (!dri2_dpy->vtbl->create_pixmap_surface)
       return NULL;
-   return dri2_dpy->vtbl->create_pixmap_surface(drv, disp, conf, native_pixmap,
+   return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
                                                 attrib_list);
 }
 
 static _EGLSurface*
-dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
-                           _EGLConfig *conf, const EGLint *attrib_list)
+dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
+                            const EGLint *attrib_list)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    if (!dri2_dpy->vtbl->create_pbuffer_surface)
       return NULL;
-   return dri2_dpy->vtbl->create_pbuffer_surface(drv, disp, conf, attrib_list);
+   return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
 }
 
 static EGLBoolean
-dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
+dri2_swap_interval(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
                    EGLint interval)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -1958,7 +1980,7 @@ dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
 }
 
 static EGLBoolean
-dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
+dri2_swap_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
@@ -1980,7 +2002,7 @@ dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 }
 
 static EGLBoolean
-dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_swap_buffers_with_damage(const _EGLDriver *drv, _EGLDisplay *disp,
                               _EGLSurface *surf,
                               const EGLint *rects, EGLint n_rects)
 {
@@ -2008,7 +2030,7 @@ dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
+dri2_swap_buffers_region(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
                          EGLint numRects, const EGLint *rects)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -2030,7 +2052,7 @@ dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 }
 
 static EGLBoolean
-dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
+dri2_set_damage_region(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
                        EGLint *rects, EGLint n_rects)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -2044,7 +2066,7 @@ dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 }
 
 static EGLBoolean
-dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
+dri2_post_sub_buffer(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
                      EGLint x, EGLint y, EGLint width, EGLint height)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -2054,22 +2076,26 @@ dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 }
 
 static EGLBoolean
-dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
+dri2_copy_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
                   void *native_pixmap_target)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+   if (!dri2_dpy->vtbl->copy_buffers)
+      return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
    return dri2_dpy->vtbl->copy_buffers(drv, disp, surf, native_pixmap_target);
 }
 
 static EGLint
-dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
+dri2_query_buffer_age(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+   if (!dri2_dpy->vtbl->query_buffer_age)
+      return 0;
    return dri2_dpy->vtbl->query_buffer_age(drv, disp, surf);
 }
 
 static EGLBoolean
-dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
+dri2_wait_client(const _EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    _EGLSurface *surf = ctx->DrawSurface;
@@ -2087,7 +2113,7 @@ dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
 }
 
 static EGLBoolean
-dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
+dri2_wait_native(const _EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
 {
    (void) drv;
    (void) disp;
@@ -2100,7 +2126,7 @@ dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
 }
 
 static EGLBoolean
-dri2_bind_tex_image(_EGLDriver *drv,
+dri2_bind_tex_image(const _EGLDriver *drv,
                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -2144,7 +2170,7 @@ dri2_bind_tex_image(_EGLDriver *drv,
 }
 
 static EGLBoolean
-dri2_release_tex_image(_EGLDriver *drv,
+dri2_release_tex_image(const _EGLDriver *drv,
                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -2177,7 +2203,7 @@ dri2_release_tex_image(_EGLDriver *drv,
 }
 
 static _EGLImage*
-dri2_create_image(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx,
+dri2_create_image(const _EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx,
                   EGLenum target, EGLClientBuffer buffer,
                   const EGLint *attr_list)
 {
@@ -2343,6 +2369,8 @@ dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
                               EGLuint64KHR *sbc)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+   if (!dri2_dpy->vtbl->get_sync_values)
+      return EGL_FALSE;
    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
 }
 
@@ -2445,20 +2473,22 @@ dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
 }
 
 static EGLBoolean
-dri2_query_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
+dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
                    EGLint attribute, EGLint *value)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    if (!dri2_dpy->vtbl->query_surface)
-      return _eglQuerySurface(drv, disp, surf, attribute, value);
-   return dri2_dpy->vtbl->query_surface(drv, disp, surf, attribute, value);
+      return _eglQuerySurface(disp, surf, attribute, value);
+   return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
 }
 
 static struct wl_buffer*
-dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_create_wayland_buffer_from_image(const _EGLDriver *drv, _EGLDisplay *disp,
                                       _EGLImage *img)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+   if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
+      return NULL;
    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, disp, img);
 }
 
@@ -2723,7 +2753,7 @@ dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
 }
 
 static EGLBoolean
-dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_query_dma_buf_formats(const _EGLDriver *drv, _EGLDisplay *disp,
                             EGLint max, EGLint *formats, EGLint *count)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -2754,7 +2784,7 @@ dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
+dri2_query_dma_buf_modifiers(const _EGLDriver *drv, _EGLDisplay *disp, EGLint format,
                              EGLint max, EGLuint64KHR *modifiers,
                              EGLBoolean *external_only, EGLint *count)
 {
@@ -2883,7 +2913,7 @@ dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
    return res;
 }
 static _EGLImage *
-dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_create_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
                            const EGLint *attr_list)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -2955,7 +2985,7 @@ dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
+dri2_export_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
                           EGLint *name, EGLint *handle, EGLint *stride)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -3001,7 +3031,7 @@ dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
 }
 
 static EGLBoolean
-dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_export_dma_buf_image_query_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
                                      _EGLImage *img,
                                      EGLint *fourcc, EGLint *nplanes,
                                      EGLuint64KHR *modifiers)
@@ -3046,7 +3076,7 @@ dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
+dri2_export_dma_buf_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
                                int *fds, EGLint *strides, EGLint *offsets)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -3094,7 +3124,7 @@ dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *im
 #endif
 
 _EGLImage *
-dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_create_image_khr(const _EGLDriver *drv, _EGLDisplay *disp,
                       _EGLContext *ctx, EGLenum target,
                       EGLClientBuffer buffer, const EGLint *attr_list)
 {
@@ -3129,7 +3159,7 @@ dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
+dri2_destroy_image_khr(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
@@ -3198,7 +3228,7 @@ dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
 }
 
 static EGLBoolean
-dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_bind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
                              struct wl_display *wl_dpy)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -3240,7 +3270,7 @@ dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_unbind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
                                struct wl_display *wl_dpy)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -3257,7 +3287,7 @@ dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_query_wayland_buffer_wl(const _EGLDriver *drv, _EGLDisplay *disp,
                              struct wl_resource *buffer_resource,
                              EGLint attribute, EGLint *value)
 {
@@ -3317,7 +3347,7 @@ dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
 }
 
 static _EGLSync *
-dri2_create_sync(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_create_sync(const _EGLDriver *drv, _EGLDisplay *disp,
                  EGLenum type, const EGLAttrib *attrib_list)
 {
    _EGLContext *ctx = _eglGetCurrentContext();
@@ -3418,7 +3448,7 @@ dri2_create_sync(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLBoolean
-dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
+dri2_destroy_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
@@ -3447,7 +3477,7 @@ dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
 }
 
 static EGLint
-dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
+dri2_dup_native_fence_fd(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
@@ -3472,7 +3502,7 @@ dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
 }
 
 static void
-dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *disp,
+dri2_set_blob_cache_funcs(const _EGLDriver *drv, _EGLDisplay *disp,
                           EGLSetBlobFuncANDROID set,
                           EGLGetBlobFuncANDROID get)
 {
@@ -3483,7 +3513,7 @@ dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *disp,
 }
 
 static EGLint
-dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
+dri2_client_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
                       EGLint flags, EGLTime timeout)
 {
    _EGLContext *ctx = _eglGetCurrentContext();
@@ -3575,7 +3605,7 @@ dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
 }
 
 static EGLBoolean
-dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
+dri2_signal_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
                       EGLenum mode)
 {
    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
@@ -3601,7 +3631,7 @@ dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
 }
 
 static EGLint
-dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
+dri2_server_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
 {
    _EGLContext *ctx = _eglGetCurrentContext();
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
@@ -3640,62 +3670,56 @@ dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
 }
 
-/**
- * This is the main entrypoint into the driver, called by libEGL.
- * Gets an _EGLDriver object and init its dispatch table.
- */
-void
-_eglInitDriver(_EGLDriver *dri2_drv)
-{
-   dri2_drv->API.Initialize = dri2_initialize;
-   dri2_drv->API.Terminate = dri2_terminate;
-   dri2_drv->API.CreateContext = dri2_create_context;
-   dri2_drv->API.DestroyContext = dri2_destroy_context;
-   dri2_drv->API.MakeCurrent = dri2_make_current;
-   dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
-   dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
-   dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
-   dri2_drv->API.DestroySurface = dri2_destroy_surface;
-   dri2_drv->API.GetProcAddress = dri2_get_proc_address;
-   dri2_drv->API.WaitClient = dri2_wait_client;
-   dri2_drv->API.WaitNative = dri2_wait_native;
-   dri2_drv->API.BindTexImage = dri2_bind_tex_image;
-   dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
-   dri2_drv->API.SwapInterval = dri2_swap_interval;
-   dri2_drv->API.SwapBuffers = dri2_swap_buffers;
-   dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
-   dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
-   dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
-   dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
-   dri2_drv->API.CopyBuffers = dri2_copy_buffers,
-   dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
-   dri2_drv->API.CreateImageKHR = dri2_create_image;
-   dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
-   dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
-   dri2_drv->API.QuerySurface = dri2_query_surface;
-   dri2_drv->API.QueryDriverName = dri2_query_driver_name;
-   dri2_drv->API.QueryDriverConfig = dri2_query_driver_config;
+const _EGLDriver _eglDriver = {
+   .Initialize = dri2_initialize,
+   .Terminate = dri2_terminate,
+   .CreateContext = dri2_create_context,
+   .DestroyContext = dri2_destroy_context,
+   .MakeCurrent = dri2_make_current,
+   .CreateWindowSurface = dri2_create_window_surface,
+   .CreatePixmapSurface = dri2_create_pixmap_surface,
+   .CreatePbufferSurface = dri2_create_pbuffer_surface,
+   .DestroySurface = dri2_destroy_surface,
+   .GetProcAddress = dri2_get_proc_address,
+   .WaitClient = dri2_wait_client,
+   .WaitNative = dri2_wait_native,
+   .BindTexImage = dri2_bind_tex_image,
+   .ReleaseTexImage = dri2_release_tex_image,
+   .SwapInterval = dri2_swap_interval,
+   .SwapBuffers = dri2_swap_buffers,
+   .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
+   .SwapBuffersRegionNOK = dri2_swap_buffers_region,
+   .SetDamageRegion = dri2_set_damage_region,
+   .PostSubBufferNV = dri2_post_sub_buffer,
+   .CopyBuffers = dri2_copy_buffers,
+   .QueryBufferAge = dri2_query_buffer_age,
+   .CreateImageKHR = dri2_create_image,
+   .DestroyImageKHR = dri2_destroy_image_khr,
+   .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
+   .QuerySurface = dri2_query_surface,
+   .QueryDriverName = dri2_query_driver_name,
+   .QueryDriverConfig = dri2_query_driver_config,
 #ifdef HAVE_LIBDRM
-   dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
-   dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
-   dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
-   dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
-   dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
-   dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
+   .CreateDRMImageMESA = dri2_create_drm_image_mesa,
+   .ExportDRMImageMESA = dri2_export_drm_image_mesa,
+   .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
+   .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
+   .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
+   .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
 #endif
 #ifdef HAVE_WAYLAND_PLATFORM
-   dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
-   dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
-   dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
+   .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
+   .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
+   .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
 #endif
-   dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
-   dri2_drv->API.CreateSyncKHR = dri2_create_sync;
-   dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
-   dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
-   dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
-   dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
-   dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
-   dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
-   dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
-   dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
-}
+   .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
+   .CreateSyncKHR = dri2_create_sync,
+   .ClientWaitSyncKHR = dri2_client_wait_sync,
+   .SignalSyncKHR = dri2_signal_sync,
+   .WaitSyncKHR = dri2_server_wait_sync,
+   .DestroySyncKHR = dri2_destroy_sync,
+   .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
+   .GLInteropExportObject = dri2_interop_export_object,
+   .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
+   .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
+};