The Tor Browser: gfx/angle/src/compiler/OutputGLSLBase.cpp@97036ab72558 (annotated)

gfx/angle/src/compiler/OutputGLSLBase.cpp@97036ab72558 (annotated)

gfx/angle/src/compiler/OutputGLSLBase.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 06 Jan 2015 21:39:09 +0100
branch: TOR_BUG_9701
changeset 8: 97036ab72558
permissions: -rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 //
 // Copyright (c) 2002-2011 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.
 //
 #include "compiler/OutputGLSLBase.h"
 #include "compiler/compiler_debug.h"
 #include <cfloat>
 namespace
 {
 TString arrayBrackets(const TType& type)
 {
     ASSERT(type.isArray());
     TInfoSinkBase out;
     out << "[" << type.getArraySize() << "]";
     return TString(out.c_str());
 }
 bool isSingleStatement(TIntermNode* node) {
     if (const TIntermAggregate* aggregate = node->getAsAggregate())
     {
         return (aggregate->getOp() != EOpFunction) &&
                (aggregate->getOp() != EOpSequence);
     }
     else if (const TIntermSelection* selection = node->getAsSelectionNode())
     {
         // Ternary operators are usually part of an assignment operator.
         // This handles those rare cases in which they are all by themselves.
         return selection->usesTernaryOperator();
     }
     else if (node->getAsLoopNode())
     {
         return false;
     }
     return true;
 }
 }  // namespace
 TOutputGLSLBase::TOutputGLSLBase(TInfoSinkBase& objSink,
                                  ShArrayIndexClampingStrategy clampingStrategy,
                                  ShHashFunction64 hashFunction,
                                  NameMap& nameMap,
                                  TSymbolTable& symbolTable)
     : TIntermTraverser(true, true, true),
       mObjSink(objSink),
       mDeclaringVariables(false),
       mClampingStrategy(clampingStrategy),
       mHashFunction(hashFunction),
       mNameMap(nameMap),
       mSymbolTable(symbolTable)
 {
 }
 void TOutputGLSLBase::writeTriplet(Visit visit, const char* preStr, const char* inStr, const char* postStr)
 {
     TInfoSinkBase& out = objSink();
     if (visit == PreVisit && preStr)
     {
         out << preStr;
     }
     else if (visit == InVisit && inStr)
     {
         out << inStr;
     }
     else if (visit == PostVisit && postStr)
     {
         out << postStr;
     }
 }
 void TOutputGLSLBase::writeVariableType(const TType& type)
 {
     TInfoSinkBase& out = objSink();
     TQualifier qualifier = type.getQualifier();
     // TODO(alokp): Validate qualifier for variable declarations.
     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()))
     {
         declareStruct(type.getStruct());
     }
     else
     {
         if (writeVariablePrecision(type.getPrecision()))
             out << " ";
         out << getTypeName(type);
     }
 }
 void TOutputGLSLBase::writeFunctionParameters(const TIntermSequence& args)
 {
     TInfoSinkBase& out = objSink();
     for (TIntermSequence::const_iterator iter = args.begin();
          iter != args.end(); ++iter)
     {
         const TIntermSymbol* arg = (*iter)->getAsSymbolNode();
         ASSERT(arg != NULL);
         const TType& type = arg->getType();
         writeVariableType(type);
         const TString& name = arg->getSymbol();
         if (!name.empty())
             out << " " << hashName(name);
         if (type.isArray())
             out << arrayBrackets(type);
         // Put a comma if this is not the last argument.
         if (iter != args.end() - 1)
             out << ", ";
     }
 }
 const ConstantUnion* TOutputGLSLBase::writeConstantUnion(const TType& type,
                                                          const ConstantUnion* pConstUnion)
 {
     TInfoSinkBase& out = objSink();
     if (type.getBasicType() == EbtStruct)
     {
         const TStructure* structure = type.getStruct();
         out << hashName(structure->name()) << "(";
         const TFieldList& fields = structure->fields();
         for (size_t i = 0; i < fields.size(); ++i)
         {
             const TType* fieldType = fields[i]->type();
             ASSERT(fieldType != NULL);
             pConstUnion = writeConstantUnion(*fieldType, pConstUnion);
             if (i != fields.size() - 1) out << ", ";
         }
         out << ")";
     }
     else
     {
         size_t size = type.getObjectSize();
         bool writeType = size > 1;
         if (writeType) out << getTypeName(type) << "(";
         for (size_t i = 0; i < size; ++i, ++pConstUnion)
         {
             switch (pConstUnion->getType())
             {
                 case EbtFloat: out << std::min(FLT_MAX, std::max(-FLT_MAX, pConstUnion->getFConst())); break;
                 case EbtInt: out << pConstUnion->getIConst(); break;
                 case EbtBool: out << pConstUnion->getBConst(); break;
                 default: UNREACHABLE();
             }
             if (i != size - 1) out << ", ";
         }
         if (writeType) out << ")";
     }
     return pConstUnion;
 }
 void TOutputGLSLBase::visitSymbol(TIntermSymbol* node)
 {
     TInfoSinkBase& out = objSink();
     if (mLoopUnroll.NeedsToReplaceSymbolWithValue(node))
         out << mLoopUnroll.GetLoopIndexValue(node);
     else
         out << hashVariableName(node->getSymbol());
     if (mDeclaringVariables && node->getType().isArray())
         out << arrayBrackets(node->getType());
 }
 void TOutputGLSLBase::visitConstantUnion(TIntermConstantUnion* node)
 {
     writeConstantUnion(node->getType(), node->getUnionArrayPointer());
 }
 bool TOutputGLSLBase::visitBinary(Visit visit, TIntermBinary* node)
 {
     bool visitChildren = true;
     TInfoSinkBase& out = objSink();
     switch (node->getOp())
     {
         case EOpInitialize:
             if (visit == InVisit)
             {
                 out << " = ";
                 // RHS of initialize is not being declared.
                 mDeclaringVariables = false;
             }
             break;
         case EOpAssign: writeTriplet(visit, "(", " = ", ")"); break;
         case EOpAddAssign: writeTriplet(visit, "(", " += ", ")"); break;
         case EOpSubAssign: writeTriplet(visit, "(", " -= ", ")"); break;
         case EOpDivAssign: writeTriplet(visit, "(", " /= ", ")"); break;
         // Notice the fall-through.
         case EOpMulAssign:
         case EOpVectorTimesMatrixAssign:
         case EOpVectorTimesScalarAssign:
         case EOpMatrixTimesScalarAssign:
         case EOpMatrixTimesMatrixAssign:
             writeTriplet(visit, "(", " *= ", ")");
             break;
         case EOpIndexDirect:
             writeTriplet(visit, NULL, "[", "]");
             break;
         case EOpIndexIndirect:
             if (node->getAddIndexClamp())
             {
                 if (visit == InVisit)
                 {
                     if (mClampingStrategy == SH_CLAMP_WITH_CLAMP_INTRINSIC) {
                         out << "[int(clamp(float(";
                     } else {
                         out << "[webgl_int_clamp(";
                     }
                 }
                 else if (visit == PostVisit)
                 {
                     int maxSize;
                     TIntermTyped *left = node->getLeft();
                     TType leftType = left->getType();
                     if (left->isArray())
                     {
                         // The shader will fail validation if the array length is not > 0.
                         maxSize = leftType.getArraySize() - 1;
                     }
                     else
                     {
                         maxSize = leftType.getNominalSize() - 1;
                     }
                     if (mClampingStrategy == SH_CLAMP_WITH_CLAMP_INTRINSIC) {
                         out << "), 0.0, float(" << maxSize << ")))]";
                     } else {
                         out << ", 0, " << maxSize << ")]";
                     }
                 }
             }
             else
             {
                 writeTriplet(visit, NULL, "[", "]");
             }
             break;
         case EOpIndexDirectStruct:
             if (visit == InVisit)
             {
                 // Here we are writing out "foo.bar", where "foo" is struct
                 // and "bar" is field. In AST, it is represented as a binary
                 // node, where left child represents "foo" and right child "bar".
                 // The node itself represents ".". The struct field "bar" is
                 // actually stored as an index into TStructure::fields.
                 out << ".";
                 const TStructure* structure = node->getLeft()->getType().getStruct();
                 const TIntermConstantUnion* index = node->getRight()->getAsConstantUnion();
                 const TField* field = structure->fields()[index->getIConst(0)];
                 TString fieldName = field->name();
                 if (!mSymbolTable.findBuiltIn(structure->name()))
                     fieldName = hashName(fieldName);
                 out << fieldName;
                 visitChildren = false;
             }
             break;
         case EOpVectorSwizzle:
             if (visit == InVisit)
             {
                 out << ".";
                 TIntermAggregate* rightChild = node->getRight()->getAsAggregate();
                 TIntermSequence& sequence = rightChild->getSequence();
                 for (TIntermSequence::iterator sit = sequence.begin(); sit != sequence.end(); ++sit)
                 {
                     TIntermConstantUnion* element = (*sit)->getAsConstantUnion();
                     ASSERT(element->getBasicType() == EbtInt);
                     ASSERT(element->getNominalSize() == 1);
                     const ConstantUnion& data = element->getUnionArrayPointer()[0];
                     ASSERT(data.getType() == EbtInt);
                     switch (data.getIConst())
                     {
                         case 0: out << "x"; break;
                         case 1: out << "y"; break;
                         case 2: out << "z"; break;
                         case 3: out << "w"; break;
                         default: UNREACHABLE(); break;
                     }
                 }
                 visitChildren = false;
             }
             break;
         case EOpAdd: writeTriplet(visit, "(", " + ", ")"); break;
         case EOpSub: writeTriplet(visit, "(", " - ", ")"); break;
         case EOpMul: writeTriplet(visit, "(", " * ", ")"); break;
         case EOpDiv: writeTriplet(visit, "(", " / ", ")"); break;
         case EOpMod: UNIMPLEMENTED(); break;
         case EOpEqual: writeTriplet(visit, "(", " == ", ")"); break;
         case EOpNotEqual: writeTriplet(visit, "(", " != ", ")"); break;
         case EOpLessThan: writeTriplet(visit, "(", " < ", ")"); break;
         case EOpGreaterThan: writeTriplet(visit, "(", " > ", ")"); break;
         case EOpLessThanEqual: writeTriplet(visit, "(", " <= ", ")"); break;
         case EOpGreaterThanEqual: writeTriplet(visit, "(", " >= ", ")"); break;
         // Notice the fall-through.
         case EOpVectorTimesScalar:
         case EOpVectorTimesMatrix:
         case EOpMatrixTimesVector:
         case EOpMatrixTimesScalar:
         case EOpMatrixTimesMatrix:
             writeTriplet(visit, "(", " * ", ")");
             break;
         case EOpLogicalOr: writeTriplet(visit, "(", " || ", ")"); break;
         case EOpLogicalXor: writeTriplet(visit, "(", " ^^ ", ")"); break;
         case EOpLogicalAnd: writeTriplet(visit, "(", " && ", ")"); break;
         default: UNREACHABLE(); break;
     }
     return visitChildren;
 }
 bool TOutputGLSLBase::visitUnary(Visit visit, TIntermUnary* node)
 {
     TString preString;
     TString postString = ")";
     switch (node->getOp())
     {
         case EOpNegative: preString = "(-"; break;
         case EOpVectorLogicalNot: preString = "not("; break;
         case EOpLogicalNot: preString = "(!"; break;
         case EOpPostIncrement: preString = "("; postString = "++)"; break;
         case EOpPostDecrement: preString = "("; postString = "--)"; break;
         case EOpPreIncrement: preString = "(++"; break;
         case EOpPreDecrement: preString = "(--"; break;
         case EOpConvIntToBool:
         case EOpConvFloatToBool:
             switch (node->getOperand()->getType().getNominalSize())
             {
                 case 1: preString =  "bool(";  break;
                 case 2: preString = "bvec2("; break;
                 case 3: preString = "bvec3("; break;
                 case 4: preString = "bvec4("; break;
                 default: UNREACHABLE();
             }
             break;
         case EOpConvBoolToFloat:
         case EOpConvIntToFloat:
             switch (node->getOperand()->getType().getNominalSize())
             {
                 case 1: preString = "float(";  break;
                 case 2: preString = "vec2("; break;
                 case 3: preString = "vec3("; break;
                 case 4: preString = "vec4("; break;
                 default: UNREACHABLE();
             }
             break;
         case EOpConvFloatToInt:
         case EOpConvBoolToInt:
             switch (node->getOperand()->getType().getNominalSize())
             {
                 case 1: preString = "int(";  break;
                 case 2: preString = "ivec2("; break;
                 case 3: preString = "ivec3("; break;
                 case 4: preString = "ivec4("; break;
                 default: UNREACHABLE();
             }
             break;
         case EOpRadians: preString = "radians("; break;
         case EOpDegrees: preString = "degrees("; break;
         case EOpSin: preString = "sin("; break;
         case EOpCos: preString = "cos("; break;
         case EOpTan: preString = "tan("; break;
         case EOpAsin: preString = "asin("; break;
         case EOpAcos: preString = "acos("; break;
         case EOpAtan: preString = "atan("; break;
         case EOpExp: preString = "exp("; break;
         case EOpLog: preString = "log("; break;
         case EOpExp2: preString = "exp2("; break;
         case EOpLog2: preString = "log2("; break;
         case EOpSqrt: preString = "sqrt("; break;
         case EOpInverseSqrt: preString = "inversesqrt("; break;
         case EOpAbs: preString = "abs("; break;
         case EOpSign: preString = "sign("; break;
         case EOpFloor: preString = "floor("; break;
         case EOpCeil: preString = "ceil("; break;
         case EOpFract: preString = "fract("; break;
         case EOpLength: preString = "length("; break;
         case EOpNormalize: preString = "normalize("; break;
         case EOpDFdx: preString = "dFdx("; break;
         case EOpDFdy: preString = "dFdy("; break;
         case EOpFwidth: preString = "fwidth("; break;
         case EOpAny: preString = "any("; break;
         case EOpAll: preString = "all("; break;
         default: UNREACHABLE(); break;
     }
     if (visit == PreVisit && node->getUseEmulatedFunction())
         preString = BuiltInFunctionEmulator::GetEmulatedFunctionName(preString);
     writeTriplet(visit, preString.c_str(), NULL, postString.c_str());
     return true;
 }
 bool TOutputGLSLBase::visitSelection(Visit visit, TIntermSelection* node)
 {
     TInfoSinkBase& out = objSink();
     if (node->usesTernaryOperator())
     {
         // Notice two brackets at the beginning and end. The outer ones
         // encapsulate the whole ternary expression. This preserves the
         // order of precedence when ternary expressions are used in a
         // compound expression, i.e., c = 2 * (a < b ? 1 : 2).
         out << "((";
         node->getCondition()->traverse(this);
         out << ") ? (";
         node->getTrueBlock()->traverse(this);
         out << ") : (";
         node->getFalseBlock()->traverse(this);
         out << "))";
     }
     else
     {
         out << "if (";
         node->getCondition()->traverse(this);
         out << ")\n";
         incrementDepth();
         visitCodeBlock(node->getTrueBlock());
         if (node->getFalseBlock())
         {
             out << "else\n";
             visitCodeBlock(node->getFalseBlock());
         }
         decrementDepth();
     }
     return false;
 }
 bool TOutputGLSLBase::visitAggregate(Visit visit, TIntermAggregate* node)
 {
     bool visitChildren = true;
     TInfoSinkBase& out = objSink();
     TString preString;
     bool delayedWrite = false;
     switch (node->getOp())
     {
         case EOpSequence: {
             // Scope the sequences except when at the global scope.
             if (depth > 0) out << "{\n";
             incrementDepth();
             const TIntermSequence& sequence = node->getSequence();
             for (TIntermSequence::const_iterator iter = sequence.begin();
                  iter != sequence.end(); ++iter)
             {
                 TIntermNode* node = *iter;
                 ASSERT(node != NULL);
                 node->traverse(this);
                 if (isSingleStatement(node))
                     out << ";\n";
             }
             decrementDepth();
             // Scope the sequences except when at the global scope.
             if (depth > 0) out << "}\n";
             visitChildren = false;
             break;
         }
         case EOpPrototype: {
             // Function declaration.
             ASSERT(visit == PreVisit);
             writeVariableType(node->getType());
             out << " " << hashName(node->getName());
             out << "(";
             writeFunctionParameters(node->getSequence());
             out << ")";
             visitChildren = false;
             break;
         }
         case EOpFunction: {
             // Function definition.
             ASSERT(visit == PreVisit);
             writeVariableType(node->getType());
             out << " " << hashFunctionName(node->getName());
             incrementDepth();
             // Function definition node contains one or two children nodes
             // representing function parameters and function body. The latter
             // is not present in case of empty function bodies.
             const TIntermSequence& sequence = node->getSequence();
             ASSERT((sequence.size() == 1) || (sequence.size() == 2));
             TIntermSequence::const_iterator seqIter = sequence.begin();
             // Traverse function parameters.
             TIntermAggregate* params = (*seqIter)->getAsAggregate();
             ASSERT(params != NULL);
             ASSERT(params->getOp() == EOpParameters);
             params->traverse(this);
             // Traverse function body.
             TIntermAggregate* body = ++seqIter != sequence.end() ?
                 (*seqIter)->getAsAggregate() : NULL;
             visitCodeBlock(body);
             decrementDepth();
             // Fully processed; no need to visit children.
             visitChildren = false;
             break;
         }
         case EOpFunctionCall:
             // Function call.
             if (visit == PreVisit)
             {
                 out << hashFunctionName(node->getName()) << "(";
             }
             else if (visit == InVisit)
             {
                 out << ", ";
             }
             else
             {
                 out << ")";
             }
             break;
         case EOpParameters: {
             // Function parameters.
             ASSERT(visit == PreVisit);
             out << "(";
             writeFunctionParameters(node->getSequence());
             out << ")";
             visitChildren = false;
             break;
         }
         case EOpDeclaration: {
             // Variable declaration.
             if (visit == PreVisit)
             {
                 const TIntermSequence& sequence = node->getSequence();
                 const TIntermTyped* variable = sequence.front()->getAsTyped();
                 writeVariableType(variable->getType());
                 out << " ";
                 mDeclaringVariables = true;
             }
             else if (visit == InVisit)
             {
                 out << ", ";
                 mDeclaringVariables = true;
             }
             else
             {
                 mDeclaringVariables = false;
             }
             break;
         }
         case EOpConstructFloat: writeTriplet(visit, "float(", NULL, ")"); break;
         case EOpConstructVec2: writeTriplet(visit, "vec2(", ", ", ")"); break;
         case EOpConstructVec3: writeTriplet(visit, "vec3(", ", ", ")"); break;
         case EOpConstructVec4: writeTriplet(visit, "vec4(", ", ", ")"); break;
         case EOpConstructBool: writeTriplet(visit, "bool(", NULL, ")"); break;
         case EOpConstructBVec2: writeTriplet(visit, "bvec2(", ", ", ")"); break;
         case EOpConstructBVec3: writeTriplet(visit, "bvec3(", ", ", ")"); break;
         case EOpConstructBVec4: writeTriplet(visit, "bvec4(", ", ", ")"); break;
         case EOpConstructInt: writeTriplet(visit, "int(", NULL, ")"); break;
         case EOpConstructIVec2: writeTriplet(visit, "ivec2(", ", ", ")"); break;
         case EOpConstructIVec3: writeTriplet(visit, "ivec3(", ", ", ")"); break;
         case EOpConstructIVec4: writeTriplet(visit, "ivec4(", ", ", ")"); break;
         case EOpConstructMat2: writeTriplet(visit, "mat2(", ", ", ")"); break;
         case EOpConstructMat3: writeTriplet(visit, "mat3(", ", ", ")"); break;
         case EOpConstructMat4: writeTriplet(visit, "mat4(", ", ", ")"); break;
         case EOpConstructStruct:
             if (visit == PreVisit)
             {
                 const TType& type = node->getType();
                 ASSERT(type.getBasicType() == EbtStruct);
                 out << hashName(type.getStruct()->name()) << "(";
             }
             else if (visit == InVisit)
             {
                 out << ", ";
             }
             else
             {
                 out << ")";
             }
             break;
         case EOpLessThan: preString = "lessThan("; delayedWrite = true; break;
         case EOpGreaterThan: preString = "greaterThan("; delayedWrite = true; break;
         case EOpLessThanEqual: preString = "lessThanEqual("; delayedWrite = true; break;
         case EOpGreaterThanEqual: preString = "greaterThanEqual("; delayedWrite = true; break;
         case EOpVectorEqual: preString = "equal("; delayedWrite = true; break;
         case EOpVectorNotEqual: preString = "notEqual("; delayedWrite = true; break;
         case EOpComma: writeTriplet(visit, NULL, ", ", NULL); break;
         case EOpMod: preString = "mod("; delayedWrite = true; break;
         case EOpPow: preString = "pow("; delayedWrite = true; break;
         case EOpAtan: preString = "atan("; delayedWrite = true; break;
         case EOpMin: preString = "min("; delayedWrite = true; break;
         case EOpMax: preString = "max("; delayedWrite = true; break;
         case EOpClamp: preString = "clamp("; delayedWrite = true; break;
         case EOpMix: preString = "mix("; delayedWrite = true; break;
         case EOpStep: preString = "step("; delayedWrite = true; break;
         case EOpSmoothStep: preString = "smoothstep("; delayedWrite = true; break;
         case EOpDistance: preString = "distance("; delayedWrite = true; break;
         case EOpDot: preString = "dot("; delayedWrite = true; break;
         case EOpCross: preString = "cross("; delayedWrite = true; break;
         case EOpFaceForward: preString = "faceforward("; delayedWrite = true; break;
         case EOpReflect: preString = "reflect("; delayedWrite = true; break;
         case EOpRefract: preString = "refract("; delayedWrite = true; break;
         case EOpMul: preString = "matrixCompMult("; delayedWrite = true; break;
         default: UNREACHABLE(); break;
     }
     if (delayedWrite && visit == PreVisit && node->getUseEmulatedFunction())
         preString = BuiltInFunctionEmulator::GetEmulatedFunctionName(preString);
     if (delayedWrite)
         writeTriplet(visit, preString.c_str(), ", ", ")");
     return visitChildren;
 }
 bool TOutputGLSLBase::visitLoop(Visit visit, TIntermLoop* node)
 {
     TInfoSinkBase& out = objSink();
     incrementDepth();
     // Loop header.
     TLoopType loopType = node->getType();
     if (loopType == ELoopFor)  // for loop
     {
         if (!node->getUnrollFlag()) {
             out << "for (";
             if (node->getInit())
                 node->getInit()->traverse(this);
             out << "; ";
             if (node->getCondition())
                 node->getCondition()->traverse(this);
             out << "; ";
             if (node->getExpression())
                 node->getExpression()->traverse(this);
             out << ")\n";
         }
     }
     else if (loopType == ELoopWhile)  // while loop
     {
         out << "while (";
         ASSERT(node->getCondition() != NULL);
         node->getCondition()->traverse(this);
         out << ")\n";
     }
     else  // do-while loop
     {
         ASSERT(loopType == ELoopDoWhile);
         out << "do\n";
     }
     // Loop body.
     if (node->getUnrollFlag())
     {
         TLoopIndexInfo indexInfo;
         mLoopUnroll.FillLoopIndexInfo(node, indexInfo);
         mLoopUnroll.Push(indexInfo);
         while (mLoopUnroll.SatisfiesLoopCondition())
         {
             visitCodeBlock(node->getBody());
             mLoopUnroll.Step();
         }
         mLoopUnroll.Pop();
     }
     else
     {
         visitCodeBlock(node->getBody());
     }
     // Loop footer.
     if (loopType == ELoopDoWhile)  // do-while loop
     {
         out << "while (";
         ASSERT(node->getCondition() != NULL);
         node->getCondition()->traverse(this);
         out << ");\n";
     }
     decrementDepth();
     // No need to visit children. They have been already processed in
     // this function.
     return false;
 }
 bool TOutputGLSLBase::visitBranch(Visit visit, TIntermBranch* node)
 {
     switch (node->getFlowOp())
     {
         case EOpKill: writeTriplet(visit, "discard", NULL, NULL); break;
         case EOpBreak: writeTriplet(visit, "break", NULL, NULL); break;
         case EOpContinue: writeTriplet(visit, "continue", NULL, NULL); break;
         case EOpReturn: writeTriplet(visit, "return ", NULL, NULL); break;
         default: UNREACHABLE(); break;
     }
     return true;
 }
 void TOutputGLSLBase::visitCodeBlock(TIntermNode* node) {
     TInfoSinkBase &out = objSink();
     if (node != NULL)
     {
         node->traverse(this);
         // Single statements not part of a sequence need to be terminated
         // with semi-colon.
         if (isSingleStatement(node))
             out << ";\n";
     }
     else
     {
         out << "{\n}\n";  // Empty code block.
     }
 }
 TString TOutputGLSLBase::getTypeName(const TType& type)
 {
     TInfoSinkBase out;
     if (type.isMatrix())
     {
         out << "mat";
         out << type.getNominalSize();
     }
     else if (type.isVector())
     {
         switch (type.getBasicType())
         {
             case EbtFloat: out << "vec"; break;
             case EbtInt: out << "ivec"; break;
             case EbtBool: out << "bvec"; break;
             default: UNREACHABLE(); break;
         }
         out << type.getNominalSize();
     }
     else
     {
         if (type.getBasicType() == EbtStruct)
             out << hashName(type.getStruct()->name());
         else
             out << type.getBasicString();
     }
     return TString(out.c_str());
 }
 TString TOutputGLSLBase::hashName(const TString& name)
 {
     if (mHashFunction == NULL || name.empty())
         return name;
     NameMap::const_iterator it = mNameMap.find(name.c_str());
     if (it != mNameMap.end())
         return it->second.c_str();
     TString hashedName = TIntermTraverser::hash(name, mHashFunction);
     mNameMap[name.c_str()] = hashedName.c_str();
     return hashedName;
 }
 TString TOutputGLSLBase::hashVariableName(const TString& name)
 {
     if (mSymbolTable.findBuiltIn(name) != NULL)
         return name;
     return hashName(name);
 }
 TString TOutputGLSLBase::hashFunctionName(const TString& mangled_name)
 {
     TString name = TFunction::unmangleName(mangled_name);
     if (mSymbolTable.findBuiltIn(mangled_name) != NULL || name == "main")
         return name;
     return hashName(name);
 }
 bool TOutputGLSLBase::structDeclared(const TStructure* structure) const
 {
     return mDeclaredStructs.find(structure->name()) != mDeclaredStructs.end();
 }
 void TOutputGLSLBase::declareStruct(const TStructure* structure)
 {
     TInfoSinkBase& out = objSink();
     out << "struct " << hashName(structure->name()) << "{\n";
     const TFieldList& fields = structure->fields();
     for (size_t i = 0; i < fields.size(); ++i)
     {
         const TField* field = fields[i];
         if (writeVariablePrecision(field->type()->getPrecision()))
             out << " ";
         out << getTypeName(*field->type()) << " " << hashName(field->name());
         if (field->type()->isArray())
             out << arrayBrackets(*field->type());
         out << ";\n";
     }
     out << "}";
     mDeclaredStructs.insert(structure->name());
 }

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gfx/angle/src/compiler/OutputGLSLBase.cpp@97036ab72558 (annotated)

gfx/angle/src/compiler/OutputGLSLBase.cpp