1 files changed, 74 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/EmulatePrecision.h b/src/3rdparty/angle/src/compiler/translator/EmulatePrecision.h
new file mode 100644
index 0000000000..f1f560aa85
--- /dev/null
+++ b/src/3rdparty/angle/src/compiler/translator/EmulatePrecision.h
@@ -0,0 +1,74 @@
+//
+// Copyright (c) 2002-2014 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 COMPILER_TRANSLATOR_EMULATE_PRECISION_H_
+#define COMPILER_TRANSLATOR_EMULATE_PRECISION_H_
+
+#include "common/angleutils.h"
+#include "compiler/translator/InfoSink.h"
+#include "compiler/translator/IntermNode.h"
+#include "GLSLANG/ShaderLang.h"
+
+// This class gathers all compound assignments from the AST and can then write
+// the functions required for their precision emulation. This way there is no
+// need to write a huge number of variations of the emulated compound assignment
+// to every translated shader with emulation enabled.
+
+class EmulatePrecision : public TIntermTraverser
+{
+  public:
+    EmulatePrecision();
+
+    virtual void visitSymbol(TIntermSymbol *node);
+    virtual bool visitBinary(Visit visit, TIntermBinary *node);
+    virtual bool visitUnary(Visit visit, TIntermUnary *node);
+    virtual bool visitAggregate(Visit visit, TIntermAggregate *node);
+
+    void writeEmulationHelpers(TInfoSinkBase& sink, ShShaderOutput outputLanguage);
+
+  private:
+    struct TypePair
+    {
+        TypePair(const char *l, const char *r)
+            : lType(l), rType(r) { }
+
+        const char *lType;
+        const char *rType;
+    };
+
+    struct TypePairComparator
+    {
+        bool operator() (const TypePair& l, const TypePair& r) const
+        {
+            if (l.lType == r.lType)
+                return l.rType < r.rType;
+            return l.lType < r.lType;
+        }
+    };
+
+    typedef std::set<TypePair, TypePairComparator> EmulationSet;
+    EmulationSet mEmulateCompoundAdd;
+    EmulationSet mEmulateCompoundSub;
+    EmulationSet mEmulateCompoundMul;
+    EmulationSet mEmulateCompoundDiv;
+
+    // Stack of function call parameter iterators
+    std::vector<TIntermSequence::const_iterator> mSeqIterStack;
+
+    bool mDeclaringVariables;
+    bool mInLValue;
+    bool mInFunctionCallOutParameter;
+
+    struct TStringComparator
+    {
+        bool operator() (const TString& a, const TString& b) const { return a.compare(b) < 0; }
+    };
+
+    // Map from function names to their parameter sequences
+    std::map<TString, TIntermSequence*, TStringComparator> mFunctionMap;
+};
+
+#endif  // COMPILER_TRANSLATOR_EMULATE_PRECISION_H_