1 files changed, 102 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/StructureHLSL.h b/gfx/angle/checkout/src/compiler/translator/StructureHLSL.h
new file mode 100644
index 0000000000..7f3b0356f7
--- /dev/null
+++ b/gfx/angle/checkout/src/compiler/translator/StructureHLSL.h
@@ -0,0 +1,102 @@
+//
+// Copyright 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.
+//
+// StructureHLSL.h:
+//   HLSL translation of GLSL constructors and structures.
+//
+
+#ifndef COMPILER_TRANSLATOR_STRUCTUREHLSL_H_
+#define COMPILER_TRANSLATOR_STRUCTUREHLSL_H_
+
+#include "compiler/translator/Common.h"
+#include "compiler/translator/IntermNode.h"
+
+#include <set>
+
+class TInfoSinkBase;
+class TScopeBracket;
+
+namespace sh
+{
+
+// This helper class assists structure and interface block definitions in determining
+// how to pack std140 structs within HLSL's packing rules.
+class Std140PaddingHelper
+{
+  public:
+    explicit Std140PaddingHelper(const std::map<TString, int> &structElementIndexes,
+                                 unsigned int *uniqueCounter);
+    Std140PaddingHelper(const Std140PaddingHelper &other);
+    Std140PaddingHelper &operator=(const Std140PaddingHelper &other);
+
+    int elementIndex() const { return mElementIndex; }
+    int prePadding(const TType &type, bool forcePadding);
+    TString prePaddingString(const TType &type, bool forcePadding);
+    TString postPaddingString(const TType &type,
+                              bool useHLSLRowMajorPacking,
+                              bool isLastElement,
+                              bool forcePadding);
+
+  private:
+    TString next();
+
+    unsigned *mPaddingCounter;
+    int mElementIndex;
+    const std::map<TString, int> *mStructElementIndexes;
+};
+
+class StructureHLSL : angle::NonCopyable
+{
+  public:
+    StructureHLSL();
+
+    // Returns the name of the constructor function.
+    TString addStructConstructor(const TStructure &structure);
+    TString addBuiltInConstructor(const TType &type, const TIntermSequence *parameters);
+
+    static TString defineNameless(const TStructure &structure);
+    void ensureStructDefined(const TStructure &structure);
+
+    std::string structsHeader() const;
+
+    Std140PaddingHelper getPaddingHelper();
+
+  private:
+    unsigned mUniquePaddingCounter;
+
+    std::map<TString, int> mStd140StructElementIndexes;
+
+    struct TStructProperties : public angle::NonCopyable
+    {
+        POOL_ALLOCATOR_NEW_DELETE
+
+        TStructProperties() {}
+
+        // Constructor is an empty string in case the struct doesn't have a constructor yet.
+        TString constructor;
+    };
+
+    // Map from struct name to struct properties.
+    typedef std::map<TString, TStructProperties *> DefinedStructs;
+    DefinedStructs mDefinedStructs;
+
+    // Struct declarations need to be kept in a vector instead of having them inside mDefinedStructs
+    // since maintaining the original order is necessary for nested structs.
+    typedef std::vector<TString> StructDeclarations;
+    StructDeclarations mStructDeclarations;
+
+    typedef std::set<TString> BuiltInConstructors;
+    BuiltInConstructors mBuiltInConstructors;
+
+    void storeStd140ElementIndex(const TStructure &structure, bool useHLSLRowMajorPacking);
+    TString defineQualified(const TStructure &structure,
+                            bool useHLSLRowMajorPacking,
+                            bool useStd140Packing,
+                            bool forcePackingEnd);
+    DefinedStructs::iterator defineVariants(const TStructure &structure, const TString &name);
+};
+}  // namespace sh
+
+#endif  // COMPILER_TRANSLATOR_STRUCTUREHLSL_H_