radeonsi: don't always apply the PrimID instancing bug workaround on SI

It looks like commit 391673af7ad1565a5f6ac8fc2f8c9fcdd1fe9908 that should
have fixed the perf regression didn't really change much if anything.

Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index 051dfea8f7c6747d191329e5655298957958a3c6..363a4aed5d510b19661b7179faf896b0ded200dc 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -213,7 +213,7 @@ static void si_emit_derived_tess_state(struct si_context *sctx,
         * doesn't work correctly on SI when there is no other
         * SE to switch to.
         */
-       if (has_primid_instancing_bug)
+       if (has_primid_instancing_bug && tess_uses_primid)
                *num_patches = 1;
 
        sctx->last_num_patches = *num_patches;