Am Sa., 1. Sep. 2018 um 21:15 Uhr schrieb Christian Gmeiner
<christian.gmei...@gmail.com>:
>
> Signed-off-by: Christian Gmeiner <christian.gmei...@gmail.com>
> ---
> src/compiler/nir/nir.h | 3 +++
> src/compiler/nir/nir_opt_algebraic.py | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
> index d81eefc032..1dcc221777 100644
> --- a/src/compiler/nir/nir.h
> +++ b/src/compiler/nir/nir.h
> @@ -2057,6 +2057,9 @@ typedef struct nir_shader_compiler_options {
> /** lowers ffloor to fsub+ffract: */
> bool lower_ffloor;
>
> + /** lowers fceil to fadd+ffract: */
> + bool lower_fceil;
> +
> /** lowers ffract to fsub+ffloor: */
> bool lower_ffract;
>
> diff --git a/src/compiler/nir/nir_opt_algebraic.py
> b/src/compiler/nir/nir_opt_algebraic.py
> index 3d2b861a42..43a1642aa5 100644
> --- a/src/compiler/nir/nir_opt_algebraic.py
> +++ b/src/compiler/nir/nir_opt_algebraic.py
> @@ -119,6 +119,7 @@ optimizations = [
> (('flrp@32', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a),
> 'options->lower_flrp32'),
> (('flrp@64', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a),
> 'options->lower_flrp64'),
> (('ffloor', a), ('fsub', a, ('ffract', a)), 'options->lower_ffloor'),
> + (('fceil', a), ('fadd', a, ('ffract', a)), 'options->lower_fceil'),
I missed a fneg(..) here .. will be fixed in v2.
> (('ffract', a), ('fsub', a, ('ffloor', a)), 'options->lower_ffract'),
> (('~fadd', ('fmul', a, ('fadd', 1.0, ('fneg', ('b2f', c)))), ('fmul', b,
> ('b2f', c))), ('bcsel', c, b, a), 'options->lower_flrp32'),
> (('~fadd@32', ('fmul', a, ('fadd', 1.0, ('fneg', c ))), ('fmul',
> b, c )), ('flrp', a, b, c), '!options->lower_flrp32'),
> --
> 2.17.1
>
--
greets
--
Christian Gmeiner, MSc
https://christian-gmeiner.info
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