diff options
| -rw-r--r-- | src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index a0da9f6..21f4cb8 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -4781,15 +4781,19 @@ emit_wpos(struct st_context *st, * saturating the value to [0,1] does the job. */ static void -emit_face_var(struct st_translate *t) +emit_face_var(struct gl_context *ctx, struct st_translate *t) { struct ureg_program *ureg = t->ureg; struct ureg_dst face_temp = ureg_DECL_temporary(ureg); struct ureg_src face_input = t->inputs[t->inputMapping[VARYING_SLOT_FACE]]; - /* MOV_SAT face_temp, input[face] */ - face_temp = ureg_saturate(face_temp); - ureg_MOV(ureg, face_temp, face_input); + if (ctx->Const.NativeIntegers) { + ureg_FSGE(ureg, face_temp, face_input, ureg_imm1f(ureg, 0)); + } + else { + /* MOV_SAT face_temp, input[face] */ + ureg_MOV(ureg, ureg_saturate(face_temp), face_input); + } /* Use face_temp as face input from here on: */ t->inputs[t->inputMapping[VARYING_SLOT_FACE]] = ureg_src(face_temp); @@ -4909,7 +4913,7 @@ st_translate_program( } if (proginfo->InputsRead & VARYING_BIT_FACE) - emit_face_var(t); + emit_face_var(ctx, t); /* * Declare output attributes. |