const __DRIdri2Extension *dri2;
const __DRIswrastExtension *swrast;
const __DRI2flushExtension *flush;
+ const __DRI2flushControlExtension *flush_control;
const __DRItexBufferExtension *tex_buffer;
const __DRIimageExtension *image;
const __DRIrobustnessExtension *robustness;