[Mesa-dev] [PATCH 08/15] i965: Reserve space for "Vertex Count" in GS outputs.

[Kenneth Graunke]

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
 src/mesa/drivers/dri/i965/brw_vec4_gs.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_gs.c b/src/mesa/drivers/dri/i965/brw_vec4_gs.c
index b52d646..e802c1e 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_gs.c
+++ b/src/mesa/drivers/dri/i965/brw_vec4_gs.c
@@ -194,6 +194,12 @@ do_gs_prog(struct brw_context *brw,
       c.prog_data.output_vertex_size_hwords * 32 * gp->program.VerticesOut;
    output_size_bytes += 32 * c.prog_data.control_data_header_size_hwords;
 
+   /* Broadwell stores "Vertex Count" as a full 8 DWord (32 byte) URB output,
+    * which comes before the conttrol header.
+    */
+   if (brw->gen >= 8)
+      output_size_bytes += 32;
+
    assert(output_size_bytes >= 1);
    if (output_size_bytes > GEN7_MAX_GS_URB_ENTRY_SIZE_BYTES)
       return false;
-- 
1.8.3.2