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-rw-r--r--src/mesa/drivers/dri/i965/brw_wm.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm.c b/src/mesa/drivers/dri/i965/brw_wm.c
index b7afcf28b1e..a0758d2527f 100644
--- a/src/mesa/drivers/dri/i965/brw_wm.c
+++ b/src/mesa/drivers/dri/i965/brw_wm.c
@@ -62,7 +62,8 @@ brw_compute_barycentric_interp_modes(struct brw_context *brw,
for (attr = 0; attr < VARYING_SLOT_MAX; ++attr) {
enum glsl_interp_qualifier interp_qualifier =
fprog->InterpQualifier[attr];
- bool is_centroid = fprog->IsCentroid & BITFIELD64_BIT(attr);
+ bool is_centroid = (fprog->IsCentroid & BITFIELD64_BIT(attr)) &&
+ !persample_shading;
bool is_sample = (fprog->IsSample & BITFIELD64_BIT(attr)) ||
persample_shading;
bool is_gl_Color = attr == VARYING_SLOT_COL0 || attr == VARYING_SLOT_COL1;