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i965/nir/vec4: Implement the dot product operation

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Adds NIR ALU operations:
   * nir_op_fdot2
   * nir_op_fdot3
   * nir_op_fdot4

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Antia Puentes
2015-06-17 10:06:44 +02:00
committed by Jason Ekstrand
parent 96106e2a9f
commit fa4e3c3c9f
1 changed files with 15 additions and 0 deletions
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src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+15
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@@ -1213,6 +1213,21 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
inst->predicate = BRW_PREDICATE_NORMAL;
break;
case nir_op_fdot2:
inst = emit(BRW_OPCODE_DP2, dst, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fdot3:
inst = emit(BRW_OPCODE_DP3, dst, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fdot4:
inst = emit(BRW_OPCODE_DP4, dst, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
default:
unreachable("Unimplemented ALU operation");
}