softpipe: add layered rendering support.

This adds support for GL 3.2 layered rendering to softpipe.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/gallium/drivers/softpipe/sp_context.h b/src/gallium/drivers/softpipe/sp_context.h
index a56e8a8..aac35f7 100644
--- a/src/gallium/drivers/softpipe/sp_context.h
+++ b/src/gallium/drivers/softpipe/sp_context.h
@@ -121,6 +121,9 @@ struct softpipe_context {
    /** Which vertex shader output slot contains point size */
    int psize_slot;
 
+   /** Which vertex shader output slot contains layer */
+   int layer_slot;
+
    /** The reduced version of the primitive supplied by the state tracker */
    unsigned reduced_api_prim;