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i965/nir/vec4: Implement min/max operations

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Adds NIR ALU operations:
   * nir_op_fmin
   * nir_op_imin
   * nir_op_umin
   * nir_op_fmax
   * nir_op_imax
   * nir_op_umax

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Antia Puentes
2015-06-17 00:34:57 +02:00
committed by Jason Ekstrand
parent d53098393e
commit 5e6f1c38a5
1 changed files with 14 additions and 0 deletions
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src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+14
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@@ -847,6 +847,20 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
inst->saturate = instr->dest.saturate;
break;
case nir_op_fmin:
case nir_op_imin:
case nir_op_umin:
inst = emit_minmax(BRW_CONDITIONAL_L, dst, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fmax:
case nir_op_imax:
case nir_op_umax:
inst = emit_minmax(BRW_CONDITIONAL_GE, dst, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
default:
unreachable("Unimplemented ALU operation");
}