From: Antia Puentes <apuentes@igalia.com>
Date: Tue, 16 Jun 2015 22:34:57 +0000 (+0200)
Subject: i965/nir/vec4: Implement min/max operations
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5e6f1c38a591fa39cff1c32a2cfdda927145756a;p=mesa.git

i965/nir/vec4: Implement min/max operations

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>
---

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index ab6335a8546..584ea5b2299 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -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");
    }