if (gsurf->base.Type != EGL_PBUFFER_BIT) {
stfbi->flush_front = egl_g3d_st_framebuffer_flush_front;
stfbi->validate = egl_g3d_st_framebuffer_validate;
if (gsurf->base.Type != EGL_PBUFFER_BIT) {
stfbi->flush_front = egl_g3d_st_framebuffer_flush_front;
stfbi->validate = egl_g3d_st_framebuffer_validate;