[Mesa-dev] [PATCH 15/22] compiler/spirv: implement 16-bit exp and log

[Jason Ekstrand]

Rb

On May 17, 2018 01:48:43 Iago Toral Quiroga <itoral at igalia.com> wrote:

> ---
> src/compiler/spirv/vtn_glsl450.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/src/compiler/spirv/vtn_glsl450.c 
> b/src/compiler/spirv/vtn_glsl450.c
> index 70e3eb80c4c..324e8b5874a 100644
> --- a/src/compiler/spirv/vtn_glsl450.c
> +++ b/src/compiler/spirv/vtn_glsl450.c
> @@ -194,7 +194,7 @@ build_fclamp(nir_builder *b,
> static nir_ssa_def *
> build_exp(nir_builder *b, nir_ssa_def *x)
> {
> -   return nir_fexp2(b, nir_fmul(b, x, nir_imm_float(b, M_LOG2E)));
> +   return nir_fexp2(b, nir_fmul(b, x, nir_imm_floatN_t(b, M_LOG2E, 
> x->bit_size)));
> }
>
> /**
> @@ -203,7 +203,8 @@ build_exp(nir_builder *b, nir_ssa_def *x)
> static nir_ssa_def *
> build_log(nir_builder *b, nir_ssa_def *x)
> {
> -   return nir_fmul(b, nir_flog2(b, x), nir_imm_float(b, 1.0 / M_LOG2E));
> +   return nir_fmul(b, nir_flog2(b, x),
> +                      nir_imm_floatN_t(b, 1.0 / M_LOG2E, x->bit_size));
> }
>
> /**
> --
> 2.14.1
>
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