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glsl: Don't constant-fold in a constant in place of a function outval.

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This commit is contained in:
Eric Anholt 2010-08-22 18:26:42 -07:00
parent 6606fde3ec
commit 428a3cd2d5
1 changed files with 22 additions and 0 deletions
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22
src/glsl/ir_constant_folding.cpp
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@ -49,6 +49,7 @@ public:
}
virtual ir_visitor_status visit_enter(ir_assignment *ir);
virtual ir_visitor_status visit_enter(ir_call *ir);
virtual void handle_rvalue(ir_rvalue **rvalue);
@ -100,6 +101,27 @@ ir_constant_folding_visitor::visit_enter(ir_assignment *ir)
return visit_continue_with_parent;
}
ir_visitor_status
ir_constant_folding_visitor::visit_enter(ir_call *ir)
{
exec_list_iterator sig_iter = ir->get_callee()->parameters.iterator();
foreach_iter(exec_list_iterator, iter, *ir) {
ir_rvalue *param_rval = (ir_rvalue *)iter.get();
ir_variable *sig_param = (ir_variable *)sig_iter.get();
if (sig_param->mode == ir_var_in) {
ir_rvalue *new_param = param_rval;
handle_rvalue(&new_param);
if (new_param != param_rval) {
param_rval->replace_with(new_param);
}
}
}
return visit_continue_with_parent;
}
bool
do_constant_folding(exec_list *instructions)
{