On 08/26/2013 03:12 PM, Paul Berry wrote:

+   /* VS always requires at least 32 URB entries */

Haswell GT2 and GT3 require at least 64 URB entries.

+   unsigned vs_chunks =
+      ALIGN(32 * vs_entry_size_bytes, chunk_size_bytes) / chunk_size_bytes;
+   unsigned vs_wants =
+      ALIGN(brw->urb.max_vs_entries * vs_entry_size_bytes,
+            chunk_size_bytes) / chunk_size_bytes - vs_chunks;
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