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i965: Don't bother flushing the batch if it doesn't ref our mt to map.

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-1.1372% +/- 0.858033% effect on cairo runtime on glamor (n=175).

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2014-04-23 13:45:22 -07:00
parent 17860309f1
commit 07730e9463
1 changed files with 2 additions and 1 deletions
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src/mesa/drivers/dri/i965/intel_mipmap_tree.c
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@ -1614,7 +1614,8 @@ intel_miptree_map_raw(struct brw_context *brw, struct intel_mipmap_tree *mt)
drm_intel_bo *bo = mt->region->bo;
intel_batchbuffer_flush(brw);
if (drm_intel_bo_references(brw->batch.bo, bo))
intel_batchbuffer_flush(brw);
if (mt->region->tiling != I915_TILING_NONE)
brw_bo_map_gtt(brw, bo, "miptree");