[Mesa-dev] [PATCH] radeonsi: Always reserve space for tessellation factors.

[Bas Nieuwenhuizen]

Those are always read for writing to the TF ring.

Should fix CTS test
GL45-CTS.shader_image_load_store.multiple-uniforms
after a regression due to the new tessellation code.

Signed-off-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
---

I have no CTS, so it actually is not tested whether it fixes
this test.


 src/gallium/drivers/radeonsi/si_state_draw.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index 788869e..40592d0 100644
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -125,6 +125,9 @@ static void si_emit_derived_tess_state(struct si_context *sctx,
 		num_tcs_patch_outputs = 2; /* TESSINNER + TESSOUTER */
 	}
 
+	/* We always load TESSINNER and TESSOUTER to write to the tf ring. */
+	num_tcs_patch_outputs = MAX2(num_tcs_patch_outputs, 2);
+
 	input_vertex_size = num_tcs_inputs * 16;
 	output_vertex_size = num_tcs_outputs * 16;
 
-- 
2.8.3