diff options
author | Eric Anholt <eric@anholt.net> | 2010-08-22 18:26:42 -0700 |
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committer | Eric Anholt <eric@anholt.net> | 2010-08-22 18:34:46 -0700 |
commit | 428a3cd2d537a42c8a01765a5a53dca139e07443 (patch) | |
tree | 102ebd8cdb69eae4580b63711f10979de9c23ff7 | |
parent | 6606fde3ec18288ecc4c6ce6d3fd32224a6c5248 (diff) |
glsl: Don't constant-fold in a constant in place of a function outval.
-rw-r--r-- | src/glsl/ir_constant_folding.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/glsl/ir_constant_folding.cpp b/src/glsl/ir_constant_folding.cpp index 90135b5807a..5d770938529 100644 --- a/src/glsl/ir_constant_folding.cpp +++ b/src/glsl/ir_constant_folding.cpp @@ -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) { |