| // |
| // Copyright (c) 2002-2015 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // During parsing, all constant expressions are folded to constant union nodes. The expressions that |
| // have been folded may have had precision qualifiers, which should affect the precision of the |
| // consuming operation. If the folded constant union nodes are written to output as such they won't |
| // have any precision qualifiers, and their effect on the precision of the consuming operation is |
| // lost. |
| // |
| // RecordConstantPrecision is an AST traverser that inspects the precision qualifiers of constants |
| // and hoists the constants outside the containing expression as precision qualified named variables |
| // in case that is required for correct precision propagation. |
| // |
| |
| #ifndef COMPILER_TRANSLATOR_RECORDCONSTANTPRECISION_H_ |
| #define COMPILER_TRANSLATOR_RECORDCONSTANTPRECISION_H_ |
| |
| namespace sh |
| { |
| class TIntermNode; |
| |
| void RecordConstantPrecision(TIntermNode *root, unsigned int *temporaryIndex); |
| } // namespace sh |
| |
| #endif // COMPILER_TRANSLATOR_RECORDCONSTANTPRECISION_H_ |
