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-rw-r--r--src/mesa/drivers/dri/i965/gen7_sol_state.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/gen7_sol_state.c b/src/mesa/drivers/dri/i965/gen7_sol_state.c
index 1b58efbf829..06a4cdf36c9 100644
--- a/src/mesa/drivers/dri/i965/gen7_sol_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_sol_state.c
@@ -132,6 +132,7 @@ gen7_upload_3dstate_so_decl_list(struct brw_context *brw,
buffer_mask |= 1 << buffer;
decl |= buffer << SO_DECL_OUTPUT_BUFFER_SLOT_SHIFT;
+ assert(vue_map->varying_to_slot[varying] >= 0);
decl |= vue_map->varying_to_slot[varying] <<
SO_DECL_REGISTER_INDEX_SHIFT;
decl |= component_mask << SO_DECL_COMPONENT_MASK_SHIFT;