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glsl: Add ir_rvalue::is_negative_one predicate

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This commit is contained in:
Ian Romanick
2010-11-16 11:59:22 -08:00
parent fc92e87b97
commit 8e498050dc
2 changed files with 58 additions and 3 deletions
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20
src/glsl/ir.h
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@@ -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.