From 77e2ac1da731f10d823ed9f477cc6898039dcec4 Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Fri, 25 Mar 2016 10:34:17 -0700 Subject: nir/builder: Add a helper for building fdot instructions Reviewed-by: Rob Clark --- src/compiler/nir/nir_builder.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/src/compiler/nir/nir_builder.h b/src/compiler/nir/nir_builder.h index b245f48c96d..4df79f58a7e 100644 --- a/src/compiler/nir/nir_builder.h +++ b/src/compiler/nir/nir_builder.h @@ -305,6 +305,23 @@ nir_swizzle(nir_builder *build, nir_ssa_def *src, unsigned swiz[4], nir_imov_alu(build, alu_src, num_components); } +/* Selects the right fdot given the number of components in each source. */ +static inline nir_ssa_def * +nir_fdot(nir_builder *build, nir_ssa_def *src0, nir_ssa_def *src1) +{ + assert(src0->num_components == src1->num_components); + switch (src0->num_components) { + case 1: return nir_fmul(build, src0, src1); + case 2: return nir_fdot2(build, src0, src1); + case 3: return nir_fdot3(build, src0, src1); + case 4: return nir_fdot4(build, src0, src1); + default: + unreachable("bad component size"); + } + + return NULL; +} + static inline nir_ssa_def * nir_channel(nir_builder *b, nir_ssa_def *def, unsigned c) { -- cgit v1.2.3