On Mon, Feb 1, 2016 at 11:00 AM, Connor Abbott <cwabbo...@gmail.com> wrote:
>> +/* NIR equiv of TGSI CMP instruction: */
>> +static nir_ssa_def *
>> +nir_cmp(nir_builder *b, nir_ssa_def *src0, nir_ssa_def *src1, nir_ssa_def
>> *src2)
>> +{
>> + return nir_bcsel(b, nir_flt(b, src0, nir_imm_float(b, 0.0)), src1, src2);
>
> I'm not that familiar with TGSI, but you're selecting src1 if src0 is
> less than zero, which seems... not quite right. Is that really how
> TGSI CMP works?
http://gallium.readthedocs.org/en/latest/tgsi.html#opcode-CMP
I think so.
-ilia
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