From: Kenneth Graunke <kenneth@whitecape.org>
Date: Mon, 9 Jul 2012 05:27:25 +0000 (-0700)
Subject: glsl/ir_builder: Add a generic constructor for unary expressions.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0bb3d4ba54f98f4d45abe598dabc905f08055cd5;p=mesa.git

glsl/ir_builder: Add a generic constructor for unary expressions.

I needed to compute logs and square roots in a patch I was working on,
and wanted to use the convenient interface.  We already have a similar
constructor for binops; adding one for unops seems reasonable.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
---

diff --git a/src/glsl/ir_builder.cpp b/src/glsl/ir_builder.cpp
index 9a16c90e5cd..fc6ee96a331 100644
--- a/src/glsl/ir_builder.cpp
+++ b/src/glsl/ir_builder.cpp
@@ -142,6 +142,14 @@ swizzle_xyzw(operand a)
    return swizzle(a, SWIZZLE_XYZW, 4);
 }
 
+ir_expression *
+expr(ir_expression_operation op, operand a)
+{
+   void *mem_ctx = ralloc_parent(a.val);
+
+   return new(mem_ctx) ir_expression(op, a.val);
+}
+
 ir_expression *
 expr(ir_expression_operation op, operand a, operand b)
 {
diff --git a/src/glsl/ir_builder.h b/src/glsl/ir_builder.h
index 0ebcbab95c2..410b08cd052 100644
--- a/src/glsl/ir_builder.h
+++ b/src/glsl/ir_builder.h
@@ -83,6 +83,7 @@ public:
 ir_assignment *assign(deref lhs, operand rhs);
 ir_assignment *assign(deref lhs, operand rhs, int writemask);
 
+ir_expression *expr(ir_expression_operation op, operand a);
 ir_expression *expr(ir_expression_operation op, operand a, operand b);
 ir_expression *add(operand a, operand b);
 ir_expression *sub(operand a, operand b);