pipebuffer: slab: if size < alignment, use alignment to find bucket

If the size is lower than the alignment, we must use the alignment to
select the bucket.

Otherwise, the selected bucket won't be able to satisfy our request
and will fail.

Signed-off-by: José Fonseca <jfonseca@vmware.com>

diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
index c445cb5..24e2820 100644 (file)
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
@@ -483,11 +483,15 @@ pb_slab_range_manager_create_buffer(struct pb_manager *_mgr,
 {
    struct pb_slab_range_manager *mgr = pb_slab_range_manager(_mgr);
    pb_size bufSize;
+   pb_size reqSize = size;
    unsigned i;
 
+   if(desc->alignment > reqSize)
+          reqSize = desc->alignment;
+
    bufSize = mgr->minBufSize;
    for (i = 0; i < mgr->numBuckets; ++i) {
-      if(bufSize >= size)
+      if(bufSize >= reqSize)
         return mgr->buckets[i]->create_buffer(mgr->buckets[i], size, desc);
       bufSize *= 2;
    }