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//
// Copyright 2018 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.
//
// ShaderStorageBlockOutputHLSL: A traverser to translate a ssbo_access_chain to an offset of
// RWByteAddressBuffer.
// //EOpIndexDirectInterfaceBlock
// ssbo_variable :=
// | the name of the SSBO
// | the name of a variable in an SSBO backed interface block
// // EOpIndexInDirect
// // EOpIndexDirect
// ssbo_array_indexing := ssbo_access_chain[expr_no_ssbo]
// // EOpIndexDirectStruct
// ssbo_structure_access := ssbo_access_chain.identifier
// ssbo_access_chain :=
// | ssbo_variable
// | ssbo_array_indexing
// | ssbo_structure_access
//
#ifndef COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKFUNCTIONHLSL_H_
#define COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKFUNCTIONHLSL_H_
#include <set>
#include "compiler/translator/InfoSink.h"
#include "compiler/translator/Types.h"
namespace sh
{
class TIntermSwizzle;
enum class SSBOMethod
{
LOAD,
STORE,
LENGTH,
ATOMIC_ADD,
ATOMIC_MIN,
ATOMIC_MAX,
ATOMIC_AND,
ATOMIC_OR,
ATOMIC_XOR,
ATOMIC_EXCHANGE,
ATOMIC_COMPSWAP
};
class ShaderStorageBlockFunctionHLSL final : angle::NonCopyable
{
public:
TString registerShaderStorageBlockFunction(const TType &type,
SSBOMethod method,
TLayoutBlockStorage storage,
bool rowMajor,
int matrixStride,
int unsizedArrayStride,
TIntermSwizzle *node);
void shaderStorageBlockFunctionHeader(TInfoSinkBase &out);
private:
struct ShaderStorageBlockFunction
{
bool operator<(const ShaderStorageBlockFunction &rhs) const;
TString functionName;
TString typeString;
SSBOMethod method;
TType type;
bool rowMajor;
int matrixStride;
int unsizedArrayStride;
TVector<int> swizzleOffsets;
bool isDefaultSwizzle;
};
static void OutputSSBOLoadFunctionBody(TInfoSinkBase &out,
const ShaderStorageBlockFunction &ssboFunction);
static void OutputSSBOStoreFunctionBody(TInfoSinkBase &out,
const ShaderStorageBlockFunction &ssboFunction);
static void OutputSSBOLengthFunctionBody(TInfoSinkBase &out, int unsizedArrayStride);
static void OutputSSBOAtomicMemoryFunctionBody(TInfoSinkBase &out,
const ShaderStorageBlockFunction &ssboFunction);
using ShaderStorageBlockFunctionSet = std::set<ShaderStorageBlockFunction>;
ShaderStorageBlockFunctionSet mRegisteredShaderStorageBlockFunctions;
};
} // namespace sh
#endif // COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKFUNCTIONHLSL_H_
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