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-rw-r--r--src/gallium/state_trackers/nine/nine_shader.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/nine/nine_shader.c b/src/gallium/state_trackers/nine/nine_shader.c
index bd695039e33..883743eb39e 100644
--- a/src/gallium/state_trackers/nine/nine_shader.c
+++ b/src/gallium/state_trackers/nine/nine_shader.c
@@ -842,6 +842,13 @@ tx_src_param(struct shader_translator *tx, const struct sm1_src_param *param)
nine_info_mark_const_f_used(tx->info, param->idx);
src = ureg_src_register(TGSI_FILE_CONSTANT, param->idx);
}
+ if (!IS_VS && tx->version.major < 2) {
+ /* ps 1.X clamps constants */
+ tmp = tx_scratch(tx);
+ ureg_MIN(ureg, tmp, src, ureg_imm1f(ureg, 1.0f));
+ ureg_MAX(ureg, tmp, ureg_src(tmp), ureg_imm1f(ureg, -1.0f));
+ src = ureg_src(tmp);
+ }
break;
case D3DSPR_CONST2:
case D3DSPR_CONST3: