On Mon, Oct 22, 2018 at 6:16 PM Jason Ekstrand <ja...@jlekstrand.net> wrote:
>
> This should be useful for drivers that don't support real integers.
>
> Cc: Alyssa Rosenzweig <aly...@rosenzweig.io>
> ---
> src/compiler/Makefile.sources | 1 +
> src/compiler/nir/meson.build | 1 +
> src/compiler/nir/nir_lower_bool_to_float.c | 181 +++++++++++++++++++++
> 3 files changed, 183 insertions(+)
> create mode 100644 src/compiler/nir/nir_lower_bool_to_float.c
> + nir_foreach_block(block, impl) {
> + nir_foreach_instr_safe(instr, block) {
> + switch (instr->type) {
> + case nir_instr_type_alu:
> + progress |= lower_alu_instr(&b, nir_instr_as_alu(instr));
> + break;
> +
> + case nir_instr_type_load_const: {
> + nir_load_const_instr *load = nir_instr_as_load_const(instr);
> + if (load->def.bit_size == 1) {
> + nir_const_value value = load->value;
> + for (unsigned i = 0; i < load->def.num_components; i++)
> + load->value.u32[i] = value.b[i] ? NIR_TRUE : NIR_FALSE;
> + load->def.bit_size = 32;
> + progress = true;
> + }
> + break;
> + }
Should this instead rewrite the load_const to a 1.0f / 0.0f?
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