Mesa (master): glsl2: Add ir_unop_noise

[Ian Romanick]

Module: Mesa
Branch: master
Commit: 3a5ce85cfa4914711e56c8cf831699242618928e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3a5ce85cfa4914711e56c8cf831699242618928e

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Wed Sep  1 21:12:10 2010 -0700

glsl2: Add ir_unop_noise

---

 src/glsl/ir.cpp                 |    3 +++
 src/glsl/ir.h                   |    2 ++
 src/mesa/program/ir_to_mesa.cpp |   10 ++++++++++
 3 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 9ac2485..b094543 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -196,6 +196,8 @@ ir_expression::get_num_operands(ir_expression_operation op)
       1, /* ir_unop_dFdx */
       1, /* ir_unop_dFdy */
 
+      1, /* ir_unop_noise */
+
       2, /* ir_binop_add */
       2, /* ir_binop_sub */
       2, /* ir_binop_mul */
@@ -261,6 +263,7 @@ static const char *const operator_strs[] = {
    "cos",
    "dFdx",
    "dFdy",
+   "noise",
    "+",
    "-",
    "*",
diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 0d93302..80a647e 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -650,6 +650,8 @@ enum ir_expression_operation {
    ir_unop_dFdy,
    /*@}*/
 
+   ir_unop_noise,
+
    ir_binop_add,
    ir_binop_sub,
    ir_binop_mul,
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index caa906a..7307c85 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -1154,6 +1154,16 @@ ir_to_mesa_visitor::visit(ir_expression *ir)
       ir_to_mesa_emit_op1(ir, OPCODE_DDY, result_dst, op[0]);
       break;
 
+   case ir_unop_noise: {
+      const enum prog_opcode opcode =
+	 prog_opcode(OPCODE_NOISE1
+		     + (ir->operands[0]->type->vector_elements) - 1);
+      assert((opcode >= OPCODE_NOISE1) && (opcode <= OPCODE_NOISE4));
+
+      ir_to_mesa_emit_op1(ir, opcode, result_dst, op[0]);
+      break;
+   }
+
    case ir_binop_add:
       ir_to_mesa_emit_op2(ir, OPCODE_ADD, result_dst, op[0], op[1]);
       break;