| // |
| // Copyright (c) 2002-2012 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. |
| // |
| |
| #ifndef _VARIABLEPACKER_INCLUDED_ |
| #define _VARIABLEPACKER_INCLUDED_ |
| |
| #include <vector> |
| #include "compiler/ShHandle.h" |
| |
| class VariablePacker { |
| public: |
| // Returns true if the passed in variables pack in maxVectors following |
| // the packing rules from the GLSL 1.017 spec, Appendix A, section 7. |
| bool CheckVariablesWithinPackingLimits( |
| int maxVectors, |
| const TVariableInfoList& in_variables); |
| |
| // Gets how many components in a row a data type takes. |
| static int GetNumComponentsPerRow(ShDataType type); |
| |
| // Gets how many rows a data type takes. |
| static int GetNumRows(ShDataType type); |
| |
| private: |
| static const int kNumColumns = 4; |
| static const unsigned kColumnMask = (1 << kNumColumns) - 1; |
| |
| unsigned makeColumnFlags(int column, int numComponentsPerRow); |
| void fillColumns(int topRow, int numRows, int column, int numComponentsPerRow); |
| bool searchColumn(int column, int numRows, int* destRow, int* destSize); |
| |
| int topNonFullRow_; |
| int bottomNonFullRow_; |
| int maxRows_; |
| std::vector<unsigned> rows_; |
| }; |
| |
| #endif // _VARIABLEPACKER_INCLUDED_ |