1 files changed, 83 insertions, 4 deletions

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 80e0f67d6d8..850033b185f 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -33,6 +33,7 @@ extern "C" {
 #include <talloc.h>
 }
 
+#include "glsl_types.h"
 #include "list.h"
 #include "ir_visitor.h"
 #include "ir_hierarchical_visitor.h"
@@ -143,6 +144,8 @@ public:
       return this;
    }
 
+   ir_rvalue *as_rvalue_to_saturate();
+
    virtual bool is_lvalue()
    {
       return false;
@@ -171,6 +174,42 @@ public:
       return NULL;
    }
 
+   /**
+    * Determine if an r-value has the value zero
+    *
+    * 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
+    * zero (or \c false for booleans).
+    *
+    * \sa ir_constant::has_value, ir_rvalue::is_one, ir_rvalue::is_negative_one
+    */
+   virtual bool is_zero() const;
+
+   /**
+    * Determine if an r-value has the value 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
+    * one (or \c true for booleans).
+    *
+    * \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();
 };
@@ -705,6 +744,8 @@ enum ir_expression_operation {
    /*@{*/
    ir_unop_sin,
    ir_unop_cos,
+   ir_unop_sin_reduced,    /**< Reduced range sin. [-pi, pi] */
+   ir_unop_cos_reduced,    /**< Reduced range cos. [-pi, pi] */
    /*@}*/
 
    /**
@@ -717,6 +758,11 @@ enum ir_expression_operation {
 
    ir_unop_noise,
 
+   /**
+    * A sentinel marking the last of the unary operations.
+    */
+   ir_last_unop = ir_unop_noise,
+
    ir_binop_add,
    ir_binop_sub,
    ir_binop_mul,
@@ -771,18 +817,43 @@ enum ir_expression_operation {
    ir_binop_logic_or,
 
    ir_binop_dot,
-   ir_binop_cross,
    ir_binop_min,
    ir_binop_max,
 
-   ir_binop_pow
+   ir_binop_pow,
+
+   /**
+    * A sentinel marking the last of the binary operations.
+    */
+   ir_last_binop = ir_binop_pow,
+
+   ir_quadop_vector,
+
+   /**
+    * A sentinel marking the last of all operations.
+    */
+   ir_last_opcode = ir_last_binop
 };
 
 class ir_expression : public ir_rvalue {
 public:
+   /**
+    * Constructor for unary operation expressions
+    */
+   ir_expression(int op, const struct glsl_type *type, ir_rvalue *);
+
+   /**
+    * Constructor for binary operation expressions
+    */
    ir_expression(int op, const struct glsl_type *type,
 		 ir_rvalue *, ir_rvalue *);
 
+   /**
+    * Constructor for quad operator expressions
+    */
+   ir_expression(int op, const struct glsl_type *type,
+		 ir_rvalue *, ir_rvalue *, ir_rvalue *, ir_rvalue *);
+
    virtual ir_expression *as_expression()
    {
       return this;
@@ -808,7 +879,8 @@ public:
     */
    unsigned int get_num_operands() const
    {
-      return get_num_operands(operation);
+      return (this->operation == ir_quadop_vector)
+	 ? this->type->vector_elements : get_num_operands(operation);
    }
 
    /**
@@ -835,7 +907,7 @@ public:
    virtual ir_visitor_status accept(ir_hierarchical_visitor *);
 
    ir_expression_operation operation;
-   ir_rvalue *operands[2];
+   ir_rvalue *operands[4];
 };
 
 
@@ -1441,9 +1513,16 @@ public:
 
    /**
     * Determine whether a constant has the same value as another constant
+    *
+    * \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.
     *