ir_to_mesa: Start adding support for texture instructions.

Fixes:
glsl-fs-bug25902
glsl-fs-sampler-numbering
glsl-lod-bias

1 files changed, 6 insertions, 0 deletions

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index de1124975d2..65026ef1f5b 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -73,6 +73,7 @@ public:
    virtual class ir_function *          as_function()         { return NULL; }
    virtual class ir_dereference *       as_dereference()      { return NULL; }
    virtual class ir_dereference_array *	as_dereference_array() { return NULL; }
+   virtual class ir_dereference_variable *as_dereference_variable() { return NULL; }
    virtual class ir_rvalue *            as_rvalue()           { return NULL; }
    virtual class ir_loop *              as_loop()             { return NULL; }
    virtual class ir_assignment *        as_assignment()       { return NULL; }
@@ -987,6 +988,11 @@ public:
 
    virtual ir_instruction *clone(struct hash_table *) const;
 
+   virtual ir_dereference_variable *as_dereference_variable()
+   {
+      return this;
+   }
+
    /**
     * Get the variable that is ultimately referenced by an r-value
     */