+ r300->cbzb_clear = TRUE;
+ r300_mark_fb_state_dirty(r300, R300_CHANGED_CBZB_FLAG);
+ }
+
+ /* Clear. */
+ if (buffers) {
+ /* Clear using the blitter. */
+ r300_blitter_begin(r300, R300_CLEAR);
+ util_blitter_clear(r300->blitter,
+ width,
+ height,
+ fb->nr_cbufs,
+ buffers, rgba, depth, stencil);
+ r300_blitter_end(r300);
+ } else if (r300->zmask_clear.dirty) {
+ /* Just clear zmask and hiz now, this does not use a standard draw
+ * procedure. */
+ unsigned dwords;
+
+ /* Calculate zmask_clear and hiz_clear atom sizes. */
+ r300_update_hyperz_state(r300);
+ dwords = r300->zmask_clear.size +
+ (r300->hiz_clear.dirty ? r300->hiz_clear.size : 0) +
+ r300_get_num_cs_end_dwords(r300);
+
+ /* Reserve CS space. */
+ if (dwords > (r300->cs->ndw - r300->cs->cdw)) {
+ r300->context.flush(&r300->context, 0, NULL);
+ }
+
+ /* Emit clear packets. */
+ r300_emit_zmask_clear(r300, r300->zmask_clear.size,
+ r300->zmask_clear.state);
+ r300->zmask_clear.dirty = FALSE;
+ if (r300->hiz_clear.dirty) {
+ r300_emit_hiz_clear(r300, r300->hiz_clear.size,
+ r300->hiz_clear.state);
+ r300->hiz_clear.dirty = FALSE;
+ }
+ } else {
+ assert(0);
+ }
+
+ /* Disable CBZB clear. */
+ if (r300->cbzb_clear) {
+ r300->cbzb_clear = FALSE;
+ hyperz->zb_depthclearvalue = hyperz_dcv;
+ r300_mark_fb_state_dirty(r300, R300_CHANGED_CBZB_FLAG);
+ }
+
+ /* Enable fastfill and/or hiz.
+ *
+ * If we cleared zmask/hiz, it's in use now. The Hyper-Z state update
+ * looks if zmask/hiz is in use and enables fastfill accordingly. */
+ if (zstex &&
+ (zstex->zmask_in_use[fb->zsbuf->level] ||
+ zstex->hiz_in_use[fb->zsbuf->level])) {
+ r300->hyperz_state.dirty = TRUE;
+ }