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-rw-r--r--src/mesa/state_tracker/st_program.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index aceaaf8c552..35d0e0fc42f 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -432,10 +432,13 @@ st_get_vp_variant(struct st_context *st,
static unsigned
-st_translate_interp(enum glsl_interp_qualifier glsl_qual)
+st_translate_interp(enum glsl_interp_qualifier glsl_qual, bool is_color)
{
switch (glsl_qual) {
case INTERP_QUALIFIER_NONE:
+ if (is_color)
+ return TGSI_INTERPOLATE_LINEAR;
+ return TGSI_INTERPOLATE_PERSPECTIVE;
case INTERP_QUALIFIER_SMOOTH:
return TGSI_INTERPOLATE_PERSPECTIVE;
case INTERP_QUALIFIER_FLAT:
@@ -538,12 +541,14 @@ st_translate_fragment_program(struct st_context *st,
case FRAG_ATTRIB_COL0:
input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
input_semantic_index[slot] = 0;
- interpMode[slot] = st_translate_interp(stfp->Base.InterpQualifier[attr]);
+ interpMode[slot] = st_translate_interp(stfp->Base.InterpQualifier[attr],
+ TRUE);
break;
case FRAG_ATTRIB_COL1:
input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
input_semantic_index[slot] = 1;
- interpMode[slot] = st_translate_interp(stfp->Base.InterpQualifier[attr]);
+ interpMode[slot] = st_translate_interp(stfp->Base.InterpQualifier[attr],
+ TRUE);
break;
case FRAG_ATTRIB_FOGC:
input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
@@ -600,7 +605,8 @@ st_translate_fragment_program(struct st_context *st,
if (attr == FRAG_ATTRIB_PNTC)
interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
else
- interpMode[slot] = st_translate_interp(stfp->Base.InterpQualifier[attr]);
+ interpMode[slot] = st_translate_interp(stfp->Base.InterpQualifier[attr],
+ FALSE);
break;
}
}