glsl: Add abs() to ir_builder.

Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Chad Versace <[email protected]>

2 files changed, 7 insertions, 0 deletions

diff --git a/src/glsl/ir_builder.cpp b/src/glsl/ir_builder.cpp
index 5e1da17a62f..06b6a8c87fb 100644
--- a/src/glsl/ir_builder.cpp
+++ b/src/glsl/ir_builder.cpp
@@ -219,6 +219,12 @@ saturate(operand a)
 	       new(mem_ctx) ir_constant(0.0f));
 }
 
+ir_expression *
+abs(operand a)
+{
+   return expr(ir_unop_abs, a);
+}
+
 ir_expression*
 equal(operand a, operand b)
 {
diff --git a/src/glsl/ir_builder.h b/src/glsl/ir_builder.h
index 59985beb2c6..49c2a7382da 100644
--- a/src/glsl/ir_builder.h
+++ b/src/glsl/ir_builder.h
@@ -133,6 +133,7 @@ ir_expression *round_even(operand a);
 ir_expression *dot(operand a, operand b);
 ir_expression *clamp(operand a, operand b, operand c);
 ir_expression *saturate(operand a);
+ir_expression *abs(operand a);
 
 ir_expression *equal(operand a, operand b);
 ir_expression *less(operand a, operand b);