C++ TStructure::uniqueId方法代码示例

void TOutputGLSLBase::writeVariableType(const TType &type)
{
    TInfoSinkBase &out = objSink();
    TQualifier qualifier = type.getQualifier();
    if (qualifier != EvqTemporary && qualifier != EvqGlobal)
    {
        out << type.getQualifierString() << " ";
    }
    // Declare the struct if we have not done so already.
    if (type.getBasicType() == EbtStruct && !structDeclared(type.getStruct()))
    {
        TStructure *structure = type.getStruct();

        declareStruct(structure);

        if (!structure->name().empty())
        {
            mDeclaredStructs.insert(structure->uniqueId());
        }
    }
    else
    {
        if (writeVariablePrecision(type.getPrecision()))
            out << " ";
        out << getTypeName(type);
    }
}

TString StructNameString(const TStructure &structure)
{
    if (structure.name().empty())
    {
        return "";
    }

    return "ss" + str(structure.uniqueId()) + "_" + structure.name();
}

void TOutputGLSLBase::writeVariableType(const TType &type)
{
    TInfoSinkBase &out = objSink();
    if (type.isInvariant())
    {
        out << "invariant ";
    }
    TQualifier qualifier = type.getQualifier();
    if (qualifier != EvqTemporary && qualifier != EvqGlobal)
    {
        if (IsGLSL130OrNewer(mOutput))
        {
            switch (qualifier)
            {
              case EvqAttribute:
                out << "in ";
                break;
              case EvqVaryingIn:
                out << "in ";
                break;
              case EvqVaryingOut:
                out << "out ";
                break;
              default:
                out << type.getQualifierString() << " ";
                break;
            }
        }
        else
        {
            out << type.getQualifierString() << " ";
        }
    }
    // Declare the struct if we have not done so already.
    if (type.getBasicType() == EbtStruct && !structDeclared(type.getStruct()))
    {
        TStructure *structure = type.getStruct();

        declareStruct(structure);

        if (!structure->name().empty())
        {
            mDeclaredStructs.insert(structure->uniqueId());
        }
    }
    else
    {
        if (writeVariablePrecision(type.getPrecision()))
            out << " ";
        out << getTypeName(type);
    }
}

void RegenerateStructNames::visitSymbol(TIntermSymbol *symbol)
{
    ASSERT(symbol);
    TType *type = symbol->getTypePointer();
    ASSERT(type);
    TStructure *userType = type->getStruct();
    if (!userType)
        return;

    if (mSymbolTable.findBuiltIn(userType->name(), mShaderVersion))
    {
        // Built-in struct, do not touch it.
        return;
    }

    int uniqueId = userType->uniqueId();

    ASSERT(mScopeDepth > 0);
    if (mScopeDepth == 1)
    {
        // If a struct is defined at global scope, we don't map its name.
        // This is because at global level, the struct might be used to
        // declare a uniform, so the same name needs to stay the same for
        // vertex/fragment shaders. However, our mapping uses internal ID,
        // which will be different for the same struct in vertex/fragment
        // shaders.
        // This is OK because names for any structs defined in other scopes
        // will begin with "_webgl", which is reserved. So there will be
        // no conflicts among unmapped struct names from global scope and
        // mapped struct names from other scopes.
        // However, we need to keep track of these global structs, so if a
        // variable is used in a local scope, we don't try to modify the
        // struct name through that variable.
        mDeclaredGlobalStructs.insert(uniqueId);
        return;
    }
    if (mDeclaredGlobalStructs.count(uniqueId) > 0)
        return;
    // Map {name} to _webgl_struct_{uniqueId}_{name}.
    const char kPrefix[] = "_webgl_struct_";
    if (userType->name().find(kPrefix) == 0)
    {
        // The name has already been regenerated.
        return;
    }
    std::string id = Str(uniqueId);
    TString tmp = kPrefix + TString(id.c_str());
    tmp += "_" + userType->name();
    userType->setName(tmp);
}

TString StructNameString(const TStructure &structure)
{
    if (structure.symbolType() == SymbolType::Empty)
    {
        return "";
    }

    // For structures at global scope we use a consistent
    // translation so that we can link between shader stages.
    if (structure.atGlobalScope())
    {
        return Decorate(structure.name());
    }

    return "ss" + str(structure.uniqueId().get()) + "_" + TString(structure.name().data());
}

bool TStructure::equals(const TStructure &other) const
{
    return (uniqueId() == other.uniqueId());
}