vrend: Use glFramebuffer3DOES on GLES

Newer versions of libepoxy treats glFramebuffer3DEXT and glFramebuffer3DOES as
different functions. They differ very slightly but it might be best to be as
proper as possible when it comes to function usage.

Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Jakob Bornecrantz <jakob@collabora.com>

src/vrend_renderer.c

@@ -1442,6 +1442,9 @@ void vrend_fb_bind_texture(struct vrend_resource *res,
       if (layer == 0xffffffff)
          glFramebufferTexture(GL_FRAMEBUFFER_EXT, attachment,
                               res->id, level);
+      else if (vrend_state.use_gles)
+         glFramebufferTexture3DOES(GL_FRAMEBUFFER_EXT, attachment,
+                                   res->target, res->id, level, layer);
       else
          glFramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT, attachment,
                                    res->target, res->id, level, layer);