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nir/builder: add a nir_fdot() convenience function

This commit is contained in:
Connor Abbott 2015-06-18 17:34:55 -07:00 committed by Jason Ekstrand
parent f6a0eff1ba
commit 024c49e95e
1 changed files with 17 additions and 0 deletions
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17
src/glsl/nir/nir_builder.h
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@ -217,6 +217,23 @@ 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;
}
/**
* Turns a nir_src into a nir_ssa_def * so it can be passed to
* nir_build_alu()-based builder calls.