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-rw-r--r--src/3rdparty/angle/src/compiler/VariablePacker.h41
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
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+++ b/src/3rdparty/angle/src/compiler/VariablePacker.h
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+//
+// 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_