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st/nine: Clamp ps 1.X constants

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This is wine (and windows) behaviour.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Axel Davy <axel.davy@ens.fr>

Cc: "10.4" <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Axel Davy
2014-12-24 09:58:49 +01:00
committed by Emil Velikov
parent 8bbc5e2781
commit 018407b5d8
1 changed files with 7 additions and 0 deletions
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src/gallium/state_trackers/nine/nine_shader.c
+7
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@@ -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: