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radeonsi: assume that a VS without POSITION is LS

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Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2016-11-14 02:03:28 +01:00
parent 7dbf83af54
commit e59389d738
1 changed files with 7 additions and 0 deletions
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7
src/gallium/drivers/radeonsi/si_state_shaders.c
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@ -1124,6 +1124,13 @@ static void si_parse_next_shader_property(const struct tgsi_shader_info *info,
case PIPE_SHADER_TESS_EVAL:
key->vs.as_ls = 1;
break;
default:
/* If POSITION isn't written, it can't be a HW VS.
* Assume that it's a HW LS. (the next shader is TCS)
* This heuristic is needed for separate shader objects.
*/
if (!info->writes_position)
key->as_ls = 1;
}
break;