st/nine: Fix centroid flag

sem.reg.mod & NINED3DSPDM_CENTROID is worth 4 when
centroid is requested, whereas
TGSI_INTERPOLATE_LOC_CENTROID is worth 1.

Signed-off-by: Axel Davy <axel.davy@ens.fr>

diff --git a/src/gallium/state_trackers/nine/nine_shader.c b/src/gallium/state_trackers/nine/nine_shader.c
index 18fa4025a7c3f56703be6a4dd5d930a4b0180c55..8f08983f64944a5df5553d6d55ca3be32c9576b7 100644 (file)
--- a/src/gallium/state_trackers/nine/nine_shader.c
+++ b/src/gallium/state_trackers/nine/nine_shader.c
@@ -2042,13 +2042,16 @@ DECL_SPECIAL(DCL)
         }
     } else {
         if (is_input && tx->version.major >= 3) {
+            unsigned interp_location = 0;
             /* SM3 only, SM2 input semantic determined by file */
             assert(sem.reg.idx < Elements(tx->regs.v));
+            if (sem.reg.mod & NINED3DSPDM_CENTROID)
+                interp_location = TGSI_INTERPOLATE_LOC_CENTROID;
             tx->regs.v[sem.reg.idx] = ureg_DECL_fs_input_cyl_centroid(
                 ureg, tgsi.Name, tgsi.Index,
                 nine_tgsi_to_interp_mode(&tgsi),
                 0, /* cylwrap */
-                sem.reg.mod & NINED3DSPDM_CENTROID, 0, 1);
+                interp_location, 0, 1);
         } else
         if (!is_input && 0) { /* declare in COLOROUT/DEPTHOUT case */
             /* FragColor or FragDepth */