1 files changed, 55 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/tree_util/SpecializationConstant.h b/gfx/angle/checkout/src/compiler/translator/tree_util/SpecializationConstant.h
new file mode 100644
index 0000000000..6644706567
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+++ b/gfx/angle/checkout/src/compiler/translator/tree_util/SpecializationConstant.h
@@ -0,0 +1,55 @@
+//
+// Copyright 2020 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.
+//
+// SpecializationConst.h: Add code to generate AST node for specialization constant.
+//
+
+#ifndef COMPILER_TRANSLATOR_TREEUTIL_SPECIALIZATIONCONSTANT_H_
+#define COMPILER_TRANSLATOR_TREEUTIL_SPECIALIZATIONCONSTANT_H_
+
+#include "common/angleutils.h"
+#include "compiler/translator/Compiler.h"
+#include "compiler/translator/SymbolTable.h"
+
+class TIntermBlock;
+class TIntermTyped;
+class TIntermSymbol;
+class TVariable;
+
+namespace sh
+{
+
+class SpecConst
+{
+  public:
+    SpecConst(TSymbolTable *symbolTable, const ShCompileOptions &compileOptions, GLenum shaderType);
+    virtual ~SpecConst();
+
+    // Flip/rotation
+    // Returns a boolean: should X and Y be swapped?
+    TIntermTyped *getSwapXY();
+
+    // Dither emulation
+    TIntermTyped *getDither();
+
+    void declareSpecConsts(TIntermBlock *root);
+    SpecConstUsageBits getSpecConstUsageBits() const { return mUsageBits; }
+
+  private:
+    TIntermSymbol *getRotation();
+
+    // If unsupported, this should be set to null.
+    TSymbolTable *mSymbolTable;
+    const ShCompileOptions &mCompileOptions;
+
+    TVariable *mSurfaceRotationVar;
+    TVariable *mDitherVar;
+
+    // Bit is set if YFlip or Rotation has been used
+    SpecConstUsageBits mUsageBits;
+};
+}  // namespace sh
+
+#endif  // COMPILER_TRANSLATOR_TREEUTIL_SPECIALIZATIONCONSTANT_H_