intel: fix batch flushing problem with cliprects handling.

pointed out and debugged by stringfellow on #dri-devel

2 files changed, 7 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_batchbuffer.h b/src/mesa/drivers/dri/intel/intel_batchbuffer.h
index 2d636df2ce5..0da602010e8 100644
--- a/src/mesa/drivers/dri/intel/intel_batchbuffer.h
+++ b/src/mesa/drivers/dri/intel/intel_batchbuffer.h
@@ -118,8 +118,10 @@ intel_batchbuffer_require_space(struct intel_batchbuffer *batch,
       if (batch->cliprect_mode == IGNORE_CLIPRECTS) {
 	 batch->cliprect_mode = cliprect_mode;
       } else {
-	 if (batch->cliprect_mode != cliprect_mode)
+	 if (batch->cliprect_mode != cliprect_mode) {
 	    intel_batchbuffer_flush(batch);
+	    batch->cliprect_mode = cliprect_mode;
+	 }
       }
    }
 }
diff --git a/src/mesa/drivers/dri/intel/intel_blit.c b/src/mesa/drivers/dri/intel/intel_blit.c
index d9dbbb24825..25ac609f133 100644
--- a/src/mesa/drivers/dri/intel/intel_blit.c
+++ b/src/mesa/drivers/dri/intel/intel_blit.c
@@ -123,7 +123,8 @@ intelCopyBuffer(const __DRIdrawablePrivate * dPriv,
 	 dst_pitch /= 4;
       }
 #endif
-
+      /* do space/cliprects check before going any further */
+      intel_batchbuffer_require_space(intel->batch, 8 * 4, REFERENCES_CLIPRECTS);
    again:
       ret = dri_bufmgr_check_aperture_space(dst->buffer);
       ret |= dri_bufmgr_check_aperture_space(src->buffer);
@@ -278,6 +279,8 @@ intelEmitCopyBlit(struct intel_context *intel,
    int ret;
    BATCH_LOCALS;
 
+   /* do space/cliprects check before going any further */
+   intel_batchbuffer_require_space(intel->batch, 8 * 4, NO_LOOP_CLIPRECTS);
  again:
    ret = dri_bufmgr_check_aperture_space(dst_buffer);
    ret |= dri_bufmgr_check_aperture_space(src_buffer);