On Wed, Mar 21, 2018 at 12:34 PM, Neil Roberts <nrobe...@igalia.com> wrote:
> This lets you easily build float immediates just given the bit size.
> If we have this single place here to handle this then it will be
> easier to add support for 16-bit floats later.
> ---
> src/compiler/nir/nir_builder.h | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/src/compiler/nir/nir_builder.h b/src/compiler/nir/nir_
> builder.h
> index 36e0ae3ac63..32f86249ad3 100644
> --- a/src/compiler/nir/nir_builder.h
> +++ b/src/compiler/nir/nir_builder.h
> @@ -227,6 +227,19 @@ nir_imm_double(nir_builder *build, double x)
> return nir_build_imm(build, 1, 64, v);
> }
>
> +static inline nir_ssa_def *
> +nir_imm_floatN_t(nir_builder *build, double x, unsigned bit_size)
> +{
> + switch (bit_size) {
>
It would be good to handle 16-bit floats too. I suppose that can always
happen later though.
> + case 32:
> + return nir_imm_float(build, x);
> + case 64:
> + return nir_imm_double(build, x);
> + }
> +
> + unreachable("unknown float immediate bit size");
>
Thanks for adding this!
> +}
> +
> static inline nir_ssa_def *
> nir_imm_vec4(nir_builder *build, float x, float y, float z, float w)
> {
> --
> 2.14.3
>
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