intel: Add a new function to check if a BO's reloc tree references some BO.

There are a bunch of places in GL where if we can't do this we have to
flush the batchbuffer, and the cost of lookups here is outweighed by flush
savings.

1 files changed, 1 insertions, 0 deletions

diff --git a/libdrm/intel/intel_bufmgr.h b/libdrm/intel/intel_bufmgr.h
index 218b7596..cb7196c3 100644
--- a/libdrm/intel/intel_bufmgr.h
+++ b/libdrm/intel/intel_bufmgr.h
@@ -110,6 +110,7 @@ int drm_intel_bo_flink(drm_intel_bo *bo, uint32_t *name);
 int drm_intel_bo_busy(drm_intel_bo *bo);
 
 int drm_intel_bo_disable_reuse(drm_intel_bo *bo);
+int drm_intel_bo_references(drm_intel_bo *bo, drm_intel_bo *target_bo);
 
 /* drm_intel_bufmgr_gem.c */
 drm_intel_bufmgr *drm_intel_bufmgr_gem_init(int fd, int batch_size);