diff options
Diffstat (limited to 'src/glsl/ir.h')
| -rw-r--r-- | src/glsl/ir.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/glsl/ir.h b/src/glsl/ir.h index 2b94e63cc2c..960cd8bab43 100644 --- a/src/glsl/ir.h +++ b/src/glsl/ir.h @@ -179,7 +179,7 @@ public: * for vector and scalar types that have all elements set to the value * zero (or \c false for booleans). * - * \sa ir_constant::has_value, ir_rvalue::is_one + * \sa ir_constant::has_value, ir_rvalue::is_one, ir_rvalue::is_negative_one */ virtual bool is_zero() const; @@ -191,10 +191,22 @@ public: * for vector and scalar types that have all elements set to the value * one (or \c true for booleans). * - * \sa ir_constant::has_value, ir_rvalue::is_zero + * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_negative_one */ virtual bool is_one() const; + /** + * Determine if an r-value has the value negative one + * + * The base implementation of this function always returns \c false. The + * \c ir_constant class over-rides this function to return \c true \b only + * for vector and scalar types that have all elements set to the value + * negative one. For boolean times, the result is always \c false. + * + * \sa ir_constant::has_value, ir_rvalue::is_zero, ir_rvalue::is_one + */ + virtual bool is_negative_one() const; + protected: ir_rvalue(); }; @@ -1482,12 +1494,14 @@ public: /** * Determine whether a constant has the same value as another constant * - * \sa ir_constant::is_zero, ir_constant::is_one + * \sa ir_constant::is_zero, ir_constant::is_one, + * ir_constant::is_negative_one */ bool has_value(const ir_constant *) const; virtual bool is_zero() const; virtual bool is_one() const; + virtual bool is_negative_one() const; /** * Value of the constant. |