diff options
| -rw-r--r-- | src/glsl/nir/nir_lower_alu_to_scalar.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_lower_alu_to_scalar.c b/src/glsl/nir/nir_lower_alu_to_scalar.c index 84d4943befc..9313fc0f97e 100644 --- a/src/glsl/nir/nir_lower_alu_to_scalar.c +++ b/src/glsl/nir/nir_lower_alu_to_scalar.c @@ -112,6 +112,24 @@ lower_alu_instr_scalar(nir_alu_instr *instr, nir_builder *b) */ return; + case nir_op_fdph: { + nir_ssa_def *sum[4]; + for (unsigned i = 0; i < 3; i++) { + sum[i] = nir_fmul(b, nir_channel(b, instr->src[0].src.ssa, + instr->src[0].swizzle[i]), + nir_channel(b, instr->src[1].src.ssa, + instr->src[1].swizzle[i])); + } + sum[3] = nir_channel(b, instr->src[1].src.ssa, instr->src[1].swizzle[3]); + + nir_ssa_def *val = nir_fadd(b, nir_fadd(b, sum[0], sum[1]), + nir_fadd(b, sum[2], sum[3])); + + nir_ssa_def_rewrite_uses(&instr->dest.dest.ssa, nir_src_for_ssa(val)); + nir_instr_remove(&instr->instr); + return; + } + LOWER_REDUCTION(nir_op_fdot, nir_op_fmul, nir_op_fadd); LOWER_REDUCTION(nir_op_ball_fequal, nir_op_feq, nir_op_iand); LOWER_REDUCTION(nir_op_ball_iequal, nir_op_ieq, nir_op_iand); |