[Mesa-dev] [PATCH v2 55/78] i965/nir/vec4: Implement the dot product operation

[Eduardo Lima Mitev]

From: Antia Puentes <apuentes at igalia.com>

Adds NIR ALU operations:
   * nir_op_fdot2
   * nir_op_fdot3
   * nir_op_fdot4
---
 src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 16e4e64..7976fcb 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -1216,6 +1216,21 @@ 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");
    }
-- 
2.1.4