Ejemplo n.º 1
0
bool TGlslOutputTraverser::traverseLoop( bool preVisit, TIntermLoop *node, TIntermTraverser *it )
{
   TGlslOutputTraverser* goit = static_cast<TGlslOutputTraverser*>(it);
   GlslFunction *current = goit->current;
   std::stringstream& out = current->getActiveOutput();

   current->beginStatement();

   if ( node->getTerminal())
   {
      // Process for loop, initial statement was promoted outside the loop
      out << "for ( ; ";
      node->getTest()->traverse(goit);
      out << "; ";
      node->getTerminal()->traverse(goit);
      out << ") ";
      current->beginBlock();
      if (node->getBody())
         node->getBody()->traverse(goit);
      current->endBlock();
   }
   else
   {
      if ( node->testFirst())
      {
         // Process while loop
         out << "while ( ";
         node->getTest()->traverse(goit);
         out << " ) ";
         current->beginBlock();
         if (node->getBody())
            node->getBody()->traverse(goit);
         current->endBlock();
      }
      else
      {
         // Process do loop
         out << "do ";
         current->beginBlock();
         if (node->getBody())
            node->getBody()->traverse(goit);
         current->endBlock();
         current->indent();
         out << "while ( ";
         node->getTest()->traverse(goit);
         out << " )\n";
      }
   }
   return false;
}
Ejemplo n.º 2
0
bool TGlslOutputTraverser::traverseDeclaration(bool preVisit, TIntermDeclaration* decl, TIntermTraverser* it) {
	TGlslOutputTraverser* goit = static_cast<TGlslOutputTraverser*>(it);
	GlslFunction *current = goit->current;
	std::stringstream& out = current->getActiveOutput();
	EGlslSymbolType symbol_type = translateType(decl->getTypePointer());
	TType& type = *decl->getTypePointer();
	
	
	bool emit_osx10_6_arrays = goit->m_EmitSnowLeopardCompatibleArrayInitializers
		&& decl->containsArrayInitialization();
	
	if (emit_osx10_6_arrays) {
		assert(decl->isSingleInitialization() && "Emission of multiple in-line array declarations isn't supported when running in OS X 10.6 compatible mode.");
		
		current->indent(out);
		out << "#if defined(OSX_SNOW_LEOPARD)" << std::endl;
		current->increaseDepth();
		
		TQualifier q = type.getQualifier();
		if (q == EvqConst)
			q = EvqTemporary;
		
		current->beginStatement();
		if (q != EvqTemporary && q != EvqGlobal)
			out << type.getQualifierString() << " ";
		
		TIntermBinary* assign = decl->getDeclaration()->getAsBinaryNode();
		TIntermSymbol* sym = assign->getLeft()->getAsSymbolNode();
		TIntermSequence& init = assign->getRight()->getAsAggregate()->getSequence();
		
		writeType(out, symbol_type, NULL, goit->m_UsePrecision ? decl->getPrecision() : EbpUndefined);
		out << "[" << type.getArraySize() << "] " << sym->getSymbol();
		current->endStatement();
		
		unsigned n_vals = init.size();
		for (unsigned i = 0; i != n_vals; ++i) {
			current->beginStatement();
			sym->traverse(goit);
			out << "[" << i << "]" << " = ";
			init[i]->traverse(goit);
			current->endStatement();
		}
		
		current->decreaseDepth();
		current->indent(out);
		out << "#else" << std::endl;
		current->increaseDepth();
	}
	
	current->beginStatement();
	
	if (type.getQualifier() != EvqTemporary && type.getQualifier() != EvqGlobal)
		out << type.getQualifierString() << " ";
	
	if (type.getBasicType() == EbtStruct)
		out << type.getTypeName();
	else
		writeType(out, symbol_type, NULL, goit->m_UsePrecision ? decl->getPrecision() : EbpUndefined);
	
	if (type.isArray())
		out << "[" << type.getArraySize() << "]";
	
	out << " ";
	
	decl->getDeclaration()->traverse(goit);
	
	current->endStatement();
	
	if (emit_osx10_6_arrays) {
		current->decreaseDepth();
		current->indent(out);
		out << "#endif" << std::endl;
	}
	
	return false;
}
Ejemplo n.º 3
0
bool TGlslOutputTraverser::traverseSelection( bool preVisit, TIntermSelection *node, TIntermTraverser *it )
{
	TGlslOutputTraverser* goit = static_cast<TGlslOutputTraverser*>(it);
	GlslFunction *current = goit->current;
	std::stringstream& out = current->getActiveOutput();

	current->beginStatement();

	if (node->getBasicType() == EbtVoid)
	{
		// if/else selection
		out << "if (";
		node->getCondition()->traverse(goit);
		out << ')';
		current->beginBlock();
		node->getTrueBlock()->traverse(goit);
		current->endBlock();
		if (node->getFalseBlock())
		{
			current->indent();
			out << "else";
			current->beginBlock();
			node->getFalseBlock()->traverse(goit);
			current->endBlock();
		}
	}
	else if (node->isVector() && node->getCondition()->getAsTyped()->isVector())
	{
		// ?: selection on vectors, e.g. bvec4 ? vec4 : vec4
		// emulate HLSL's component-wise selection here
		current->addLibFunction(EOpVecTernarySel);
		out << "xll_vecTSel (";
		node->getCondition()->traverse(goit);
		out << ", ";
		node->getTrueBlock()->traverse(goit);
		out << ", ";
		if (node->getFalseBlock())
		{
			node->getFalseBlock()->traverse(goit);
		}
		else
			assert(0);
		out << ")";
	}
	else
	{
		// simple ?: selection
		out << "(( ";
		node->getCondition()->traverse(goit);
		out << " ) ? ( ";
		node->getTrueBlock()->traverse(goit);
		out << " ) : ( ";
		if (node->getFalseBlock())
		{
			node->getFalseBlock()->traverse(goit);
		}
		else
			assert(0);
		out << " ))";
	}

	return false;
}