[Mesa-dev] [PATCH 1/2] nir: Add support for gl_HelperInvocation system value.

[Tapani Pälli]

Reviewed-by: Tapani Pälli <tapani.palli at intel.com>

On 11/14/2015 04:05 AM, Matt Turner wrote:
> ---
>   src/glsl/nir/nir.c            | 4 ++++
>   src/glsl/nir/nir_intrinsics.h | 1 +
>   2 files changed, 5 insertions(+)
>
> diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
> index bb7a5fa..974438b 100644
> --- a/src/glsl/nir/nir.c
> +++ b/src/glsl/nir/nir.c
> @@ -1565,6 +1565,8 @@ nir_intrinsic_from_system_value(gl_system_value val)
>         return nir_intrinsic_load_tess_level_inner;
>      case SYSTEM_VALUE_VERTICES_IN:
>         return nir_intrinsic_load_patch_vertices_in;
> +   case SYSTEM_VALUE_HELPER_INVOCATION:
> +      return nir_intrinsic_load_helper_invocation;
>      default:
>         unreachable("system value does not directly correspond to intrinsic");
>      }
> @@ -1608,6 +1610,8 @@ nir_system_value_from_intrinsic(nir_intrinsic_op intrin)
>         return SYSTEM_VALUE_TESS_LEVEL_INNER;
>      case nir_intrinsic_load_patch_vertices_in:
>         return SYSTEM_VALUE_VERTICES_IN;
> +   case nir_intrinsic_load_helper_invocation:
> +      return SYSTEM_VALUE_HELPER_INVOCATION;
>      default:
>         unreachable("intrinsic doesn't produce a system value");
>      }
> diff --git a/src/glsl/nir/nir_intrinsics.h b/src/glsl/nir/nir_intrinsics.h
> index 36fb286..ca35b33 100644
> --- a/src/glsl/nir/nir_intrinsics.h
> +++ b/src/glsl/nir/nir_intrinsics.h
> @@ -225,6 +225,7 @@ SYSTEM_VALUE(local_invocation_id, 3, 0)
>   SYSTEM_VALUE(work_group_id, 3, 0)
>   SYSTEM_VALUE(user_clip_plane, 4, 1) /* const_index[0] is user_clip_plane[idx] */
>   SYSTEM_VALUE(num_work_groups, 3, 0)
> +SYSTEM_VALUE(helper_invocation, 1, 0)
>
>   /*
>    * The format of the indices depends on the type of the load.  For uniforms,
>