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Diffstat (limited to 'src/3rdparty/angle/src/compiler/VariablePacker.h')
-rw-r--r-- | src/3rdparty/angle/src/compiler/VariablePacker.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/VariablePacker.h b/src/3rdparty/angle/src/compiler/VariablePacker.h new file mode 100644 index 0000000000..8987066cc3 --- /dev/null +++ b/src/3rdparty/angle/src/compiler/VariablePacker.h @@ -0,0 +1,41 @@ +// +// 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_ |