1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/compiler/VariablePacker.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,41 @@
1.4 +//
1.5 +// Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +#ifndef _VARIABLEPACKER_INCLUDED_
1.11 +#define _VARIABLEPACKER_INCLUDED_
1.12 +
1.13 +#include <vector>
1.14 +#include "compiler/ShHandle.h"
1.15 +
1.16 +class VariablePacker {
1.17 + public:
1.18 + // Returns true if the passed in variables pack in maxVectors following
1.19 + // the packing rules from the GLSL 1.017 spec, Appendix A, section 7.
1.20 + bool CheckVariablesWithinPackingLimits(
1.21 + int maxVectors,
1.22 + const TVariableInfoList& in_variables);
1.23 +
1.24 + // Gets how many components in a row a data type takes.
1.25 + static int GetNumComponentsPerRow(ShDataType type);
1.26 +
1.27 + // Gets how many rows a data type takes.
1.28 + static int GetNumRows(ShDataType type);
1.29 +
1.30 + private:
1.31 + static const int kNumColumns = 4;
1.32 + static const unsigned kColumnMask = (1 << kNumColumns) - 1;
1.33 +
1.34 + unsigned makeColumnFlags(int column, int numComponentsPerRow);
1.35 + void fillColumns(int topRow, int numRows, int column, int numComponentsPerRow);
1.36 + bool searchColumn(int column, int numRows, int* destRow, int* destSize);
1.37 +
1.38 + int topNonFullRow_;
1.39 + int bottomNonFullRow_;
1.40 + int maxRows_;
1.41 + std::vector<unsigned> rows_;
1.42 +};
1.43 +
1.44 +#endif // _VARIABLEPACKER_INCLUDED_
