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|
// Aqsis
// Copyright 1997 - 2001, Paul C. Gregory
//
// Contact: pgregory@aqsis.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\brief Compiler backend to output VM code.
\author Paul C. Gregory (pgregory@aqsis.com)
*/
#include "aqsis.h"
#ifndef AQSIS_SYSTEM_MACOSX
#include <sstream>
#endif
#include <fstream>
#include <deque>
#include <string>
#include <map>
#if defined(AQSIS_SYSTEM_WIN32) || defined(AQSIS_SYSTEM_MACOSX)
#include "version.h"
#endif // AQSIS_SYSTEM_WIN32
#include "vmoutput.h"
#include "parsenode.h"
START_NAMESPACE( Aqsis )
std::string* FindTemporaryVariable( std::string strName, std::deque<std::map<std::string, std::string> >& Stack );
IqVarDef* pTranslatedVariable( SqVarRef& Ref, std::vector<std::vector<SqVarRefTranslator> >& Stack );
void CreateTranslationTable( IqParseNode* pParam, IqParseNode* pArg, std::vector<std::vector<SqVarRefTranslator> >& Stack );
void CreateTempMap( IqParseNode* pParam, IqParseNode* pArg, std::deque<std::map<std::string, std::string> >& Stack,
std::vector<std::vector<SqVarRefTranslator> >& Trans, std::map<std::string, IqVarDef*>& TempVars );
void CqCodeGenOutput::Visit( IqParseNode& N )
{
IqParseNode * pNext = N.pChild();
while ( pNext )
{
pNext->Accept( *this );
pNext = pNext->pNextSibling();
}
}
void CqCodeGenOutput::Visit( IqParseNodeShader& S )
{
IqParseNode * pNode;
S.GetInterface( ParseNode_Base, ( void** ) & pNode );
// Create a new file for this shader
if ( strOutName().compare( "" ) == 0 )
{
strOutName() = S.strName();
strOutName().append( VM_SHADER_EXTENSION );
}
std::map<std::string, std::string> temp;
m_StackVarMap.push_back( temp );
m_slxFile.open( strOutName().c_str() );
std::cout << "... " << strOutName().c_str() << std::endl;
m_slxFile << S.strShaderType() << std::endl;
// Output version information.
#if defined(AQSIS_SYSTEM_WIN32) || defined(AQSIS_SYSTEM_MACOSX)
m_slxFile << "AQSIS_V " << VERSION_STR << std::endl;
#else // AQSIS_SYSTEM_WIN32
m_slxFile << "AQSIS_V " << VERSION << std::endl;
#endif // !AQSIS_SYSTEM_WIN32
m_slxFile << std::endl << std::endl << "segment Data" << std::endl;
// Now that we have this information, work out which standard vars are used.
TqInt Use = m_pDataGather->VariableUsage();
TqInt i;
for ( i = 0; i < EnvVars_Last; i++ )
{
if ( gStandardVars[ i ].UseCount() > 0 )
Use |= ( 0x00000001 << i );
}
m_slxFile << std::endl << "USES " << Use << std::endl << std::endl;
// Output any declared variables.
for ( i = 0; i < gLocalVars.size(); i++ )
OutputLocalVariable( &gLocalVars[ i ], m_slxFile, strOutName() );
// Output temporary variables.
std::map<std::string, IqVarDef*>::iterator iTemp;
for ( iTemp = TempVars().begin(); iTemp != TempVars().end(); iTemp++ )
{
IqVarDef* pVar = ( *iTemp ).second;;
m_slxFile << StorageSpec( pVar->Type() ).c_str() << " "
<< gVariableTypeNames[ pVar->Type() & Type_Mask ] << " "
<< ( *iTemp ).first;
if ( pVar->Type() & Type_Array )
m_slxFile << "[" << pVar->ArrayLength() << "]";
m_slxFile << std::endl;
}
m_slxFile << std::endl << std::endl << "segment Init" << std::endl;
for ( i = 0; i < gLocalVars.size(); i++ )
{
IqVarDef* pVar = &gLocalVars[ i ];
if ( pVar->Type() & Type_Param && pVar->pInitialiser() != 0 )
pVar->pInitialiser() ->Accept( *this );
}
m_slxFile << std::endl << std::endl << "segment Code" << std::endl;
IqParseNode* pCode = pNode->pChild();
// Output the code tree.
if ( pCode ) pCode->Accept( *this );
/// \note There is another child here, it is the list of arguments, but they don't need to be
/// output as part of the code segment.
m_slxFile.close();
}
void CqCodeGenOutput::Visit( IqParseNodeFunctionCall& FC )
{
// Output the function name.
IqFuncDef * pFunc = FC.pFuncDef();
IqParseNode* pNode;
FC.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode* pArguments = pNode->pChild();
if ( !pFunc->fLocal() )
{
// Output parameters in reverse order, so that the function can pop them as expected
if ( pArguments != 0 )
{
IqParseNode * pArg = pArguments;
while ( pArg->pNextSibling() != 0 ) pArg = pArg->pNextSibling();
while ( pArg != 0 )
{
// Push the argument...
pArg->Accept( *this );
pArg = pArg->pPrevSibling();
}
}
// If it is a variable length parameter function, output the number of
// additional parameters.
TqInt iAdd = 0;
if ( ( iAdd = pFunc->VariableLength() ) >= 0 )
{
const IqParseNode * pArg = pArguments;
while ( pArg )
{
iAdd--;
pArg = pArg->pNextSibling();
}
// Not happy about this!!
CqParseNodeFloatConst C( static_cast<TqFloat>( abs( iAdd ) ) );
C.Accept( *this );
}
m_slxFile << "\t" << pFunc->strVMName() << std::endl;
}
else
{
// Output arguments and pop the parameters off the stack.
if ( pArguments != 0 && pFunc->pArgs() != 0 && pFunc->pDef() != 0 )
{
CreateTempMap( pFunc->pArgs() ->pChild(), pArguments, m_StackVarMap, m_saTransTable, TempVars() );
IqParseNode * pParam = pFunc->pArgs() ->pChild();
IqParseNode* pArg = pArguments;
while ( pParam != 0 )
{
if ( !pArg->IsVariableRef() )
{
// Push the argument...
pArg->Accept( *this );
// ...and pop the parameter
CqParseNodeAssign Pop( static_cast<CqParseNodeVariable*>( pParam ) );
Pop.NoDup();
Pop.Accept( *this );
}
pParam = pParam->pNextSibling();
pArg = pArg->pNextSibling();
}
}
// Output the function body.
if( NULL != pFunc->pArgs() )
{
if ( NULL != pFunc->pDef() )
{
CreateTranslationTable( pFunc->pArgs() ->pChild(), pArguments, m_saTransTable );
pFunc->pDef() ->Accept( *this );
m_saTransTable.erase( m_saTransTable.end() - 1 );
}
}
else
{
if ( NULL != pFunc->pDef() )
{
CreateTranslationTable( NULL, NULL, m_saTransTable );
pFunc->pDef() ->Accept( *this );
m_saTransTable.erase( m_saTransTable.end() - 1 );
}
}
m_StackVarMap.pop_back( );
}
}
void CqCodeGenOutput::Visit( IqParseNodeUnresolvedCall& UFC )
{
// Output the function name.
IqFuncDef * pFunc = UFC.pFuncDef();
IqParseNode* pNode;
UFC.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode* pArguments = pNode->pChild();
// Output parameters in reverse order, so that the function can pop them as expected
if ( pArguments != 0 )
{
IqParseNode * pArg = pArguments;
while ( pArg->pNextSibling() != 0 ) pArg = pArg->pNextSibling();
while ( pArg != 0 )
{
// Push the argument...
pArg->Accept( *this );
pArg = pArg->pPrevSibling();
}
}
// If it is a variable length parameter function, output the number of
// additional parameters.
TqInt iAdd = 0;
if ( ( iAdd = pFunc->VariableLength() ) >= 0 )
{
const IqParseNode * pArg = pArguments;
while ( pArg )
{
iAdd--;
pArg = pArg->pNextSibling();
}
// Not happy about this!!
CqParseNodeFloatConst C( static_cast<TqFloat>( abs( iAdd ) ) );
C.Accept( *this );
}
// Here I just dump out a string describing my external call requirements.
m_slxFile << "\texternal \"" << pFunc->strName() << "\" \"" << CqParseNode::TypeIdentifier( pFunc->Type() ) << "\" \"" << pFunc->strParams() << "\"" << std::endl;
}
void CqCodeGenOutput::Visit( IqParseNodeVariable& V )
{
IqParseNode * pNode;
V.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNodeVariable* pVN;
V.GetInterface( ParseNode_Variable, ( void** ) & pVN );
m_slxFile << "\tpushv ";
SqVarRef temp( pVN->VarRef() );
IqVarDef* pVD = pTranslatedVariable( temp, m_saTransTable );
if ( pVD )
{
pVD->IncUseCount();
std::string* strTempName;
if ( ( strTempName = FindTemporaryVariable( pVD->strName(), m_StackVarMap ) ) != NULL )
m_slxFile << strTempName->c_str() << std::endl;
else
m_slxFile << pVD->strName() << std::endl;
}
}
void CqCodeGenOutput::Visit( IqParseNodeArrayVariable& AV )
{
IqParseNode * pNode;
AV.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNodeVariable* pVN;
AV.GetInterface( ParseNode_Variable, ( void** ) & pVN );
pNode->pChild() ->Accept( *this );
m_slxFile << "\tipushv ";
SqVarRef temp( pVN->VarRef() );
IqVarDef* pVD = pTranslatedVariable( temp, m_saTransTable );
if ( pVD )
{
pVD->IncUseCount();
std::string* strTempName;
if ( ( strTempName = FindTemporaryVariable( pVD->strName(), m_StackVarMap ) ) != NULL )
m_slxFile << strTempName->c_str() << std::endl;
else
m_slxFile << pVD->strName() << std::endl;
}
}
void CqCodeGenOutput::Visit( IqParseNodeVariableAssign& VA )
{
// Output the assignment expression
IqParseNode * pNode;
VA.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNodeVariable* pVN;
VA.GetInterface( ParseNode_Variable, ( void** ) & pVN );
IqParseNode * pExpr = pNode->pChild();
if ( pExpr != 0 )
pExpr->Accept( *this );
// Output a dup so that the result remains on the stack.
if ( !VA.fDiscardResult() )
m_slxFile << "\tdup" << std::endl;
m_slxFile << "\tpop ";
// Output a pop for this variable.
SqVarRef temp( pVN->VarRef() );
IqVarDef* pVD = pTranslatedVariable( temp, m_saTransTable );
if ( pVD )
{
pVD->IncUseCount();
std::string* strTempName;
if ( ( strTempName = FindTemporaryVariable( pVD->strName(), m_StackVarMap ) ) != NULL )
m_slxFile << strTempName->c_str() << std::endl;
else
m_slxFile << pVD->strName() << std::endl;
}
}
void CqCodeGenOutput::Visit( IqParseNodeArrayVariableAssign& AVA )
{
// Output the assignment expression
IqParseNode * pNode;
AVA.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNodeVariable* pVN;
AVA.GetInterface( ParseNode_Variable, ( void** ) & pVN );
IqParseNodeVariableAssign* pVA;
AVA.GetInterface( ParseNode_VariableAssign, ( void** ) & pVA );
IqParseNode * pExpr = pNode->pChild();
if ( pExpr != 0 )
pExpr->Accept( *this );
// Output a dup so that the result remains on the stack.
if ( !pVA->fDiscardResult() )
m_slxFile << "\tdup" << std::endl;
IqParseNode * pIndex = pExpr->pNextSibling();
pIndex->Accept( *this );
m_slxFile << "\tipop ";
// Output a pop for this variable.
SqVarRef temp( pVN->VarRef() );
IqVarDef* pVD = pTranslatedVariable( temp, m_saTransTable );
if ( pVD )
{
pVD->IncUseCount();
std::string* strTempName;
if ( ( strTempName = FindTemporaryVariable( pVD->strName(), m_StackVarMap ) ) != NULL )
m_slxFile << strTempName->c_str() << std::endl;
else
m_slxFile << pVD->strName() << std::endl;
}
}
void CqCodeGenOutput::Visit( IqParseNodeOperator& OP )
{
IqParseNode * pNode;
OP.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode* pOperandA = pNode->pChild();
IqParseNode* pOperandB = pOperandA->pNextSibling();
char* pstrAType = "";
if ( pOperandA ) pstrAType = gVariableTypeIdentifiers[ pOperandA->ResType() & Type_Mask ];
char* pstrBType = "";
if ( pOperandB ) pstrBType = gVariableTypeIdentifiers[ pOperandB->ResType() & Type_Mask ];
if ( pOperandA ) pOperandA->Accept( *this );
if ( pOperandB ) pOperandB->Accept( *this );
m_slxFile << "\t" << MathOpName( OP.Operator() );
if ( pNode->NodeType() != ParseNode_LogicalOp )
{
if ( pOperandA ) m_slxFile << pstrBType;
if ( pOperandB ) m_slxFile << pstrAType;
}
m_slxFile << std::endl;
}
void CqCodeGenOutput::Visit( IqParseNodeMathOp& OP )
{
IqParseNodeOperator * pOp;
OP.GetInterface( ParseNode_Operator, ( void** ) & pOp );
Visit( *pOp );
}
void CqCodeGenOutput::Visit( IqParseNodeRelationalOp& OP )
{
IqParseNodeOperator * pOp;
OP.GetInterface( ParseNode_Operator, ( void** ) & pOp );
Visit( *pOp );
}
void CqCodeGenOutput::Visit( IqParseNodeUnaryOp& OP )
{
IqParseNodeOperator * pOp;
OP.GetInterface( ParseNode_Operator, ( void** ) & pOp );
Visit( *pOp );
}
void CqCodeGenOutput::Visit( IqParseNodeLogicalOp& OP )
{
IqParseNodeOperator * pOp;
OP.GetInterface( ParseNode_Operator, ( void** ) & pOp );
Visit( *pOp );
}
void CqCodeGenOutput::Visit( IqParseNodeDiscardResult& DR )
{
IqParseNode * pNode;
DR.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode * pNext = pNode->pChild();
while ( pNext )
{
pNext->Accept( *this );
pNext = pNext->pNextSibling();
}
m_slxFile << "\tdrop" << std::endl;
}
void CqCodeGenOutput::Visit( IqParseNodeConstantFloat& F )
{
m_slxFile << "\tpushif " << F.Value() << std::endl;
}
void CqCodeGenOutput::Visit( IqParseNodeConstantString& S )
{
m_slxFile << "\tpushis \"" << S.strValue() << "\"" << std::endl;
}
void CqCodeGenOutput::Visit( IqParseNodeWhileConstruct& WC )
{
IqParseNode * pNode;
WC.GetInterface( ParseNode_Base, ( void** ) & pNode );
TqInt iLabelA = m_gcLabels++;
TqInt iLabelB = m_gcLabels++;
IqParseNode* pArg = pNode->pChild();
assert( pArg != 0 );
IqParseNode* pStmt = pArg->pNextSibling();
assert( pStmt != 0 );
IqParseNode* pStmtInc = pStmt->pNextSibling();
m_slxFile << ":" << iLabelA << std::endl; // loop back label
m_slxFile << "\tS_CLEAR" << std::endl; // clear current state
pArg->Accept( *this ); // relation
m_slxFile << "\tS_GET" << std::endl; // Get the current state by popping the t[ value off the stack
m_slxFile << "\tS_JZ " << iLabelB << std::endl; // exit if false
m_slxFile << "\tRS_PUSH" << std::endl; // push running state
m_slxFile << "\tRS_GET" << std::endl; // get current state to running state
pStmt->Accept( *this ); // statement
if ( pStmtInc )
pStmtInc->Accept( *this ); // incrementor
m_slxFile << "\tRS_POP" << std::endl; // Pop the running state
m_slxFile << "\tjmp " << iLabelA << std::endl; // loop back jump
m_slxFile << ":" << iLabelB << std::endl; // completion label
}
void CqCodeGenOutput::Visit( IqParseNodeIlluminateConstruct& IC )
{
IqParseNode * pNode;
IC.GetInterface( ParseNode_Base, ( void** ) & pNode );
TqInt iLabelA = m_gcLabels++;
TqInt iLabelB = m_gcLabels++;
IqParseNode* pArg = pNode->pChild();
assert( pArg != 0 );
IqParseNode* pStmt = pArg->pNextSibling();
assert( pStmt != 0 );
m_slxFile << ":" << iLabelA << std::endl; // loop back label
m_slxFile << "\tS_CLEAR" << std::endl; // clear current state
pArg->Accept( *this );
if ( IC.fHasAxisAngle() ) m_slxFile << "\tilluminate2" << std::endl;
else m_slxFile << "\tilluminate" << std::endl;
m_slxFile << "\tS_JZ " << iLabelB << std::endl; // exit loop if false
m_slxFile << "\tRS_PUSH" << std::endl; // Push running state
m_slxFile << "\tRS_GET" << std::endl; // Get state
pStmt->Accept( *this ); // statement
m_slxFile << "\tRS_POP" << std::endl; // Pop the running state
m_slxFile << "\tjmp " << iLabelA << std::endl; // loop back jump
m_slxFile << ":" << iLabelB << std::endl; // completion label
}
void CqCodeGenOutput::Visit( IqParseNodeIlluminanceConstruct& IC )
{
IqParseNode * pNode;
IC.GetInterface( ParseNode_Base, ( void** ) & pNode );
TqInt iLabelA = m_gcLabels++;
TqInt iLabelB = m_gcLabels++;
TqInt iLabelC = m_gcLabels++;
IqParseNode* pArg = pNode->pChild();
assert( pArg != 0 );
IqParseNode* pStmt = pArg->pNextSibling();
assert( pStmt != 0 );
// The last child of the arg node is the Point to be illuminated, see Parser.y for confirmation.
IqParseNode* pInitArg = pArg->pChild();
while ( pInitArg->pNextSibling() != 0 ) pInitArg = pInitArg->pNextSibling();
pInitArg = pInitArg->pPrevSibling();
// If it has an axisangle, then the previous one is the axis, so pass that in as the surface normal.
if ( IC.fHasAxisAngle() )
{
assert( pInitArg->pPrevSibling() );
pInitArg->pPrevSibling()->Accept( *this );
pInitArg->Accept( *this );
m_slxFile << "\tinit_illuminance2" << std::endl;
}
else
{
pInitArg->Accept( *this );
m_slxFile << "\tinit_illuminance" << std::endl;
}
m_slxFile << "\tjz " << iLabelB << std::endl; // Jump if no lightsources.
m_slxFile << ":" << iLabelA << std::endl; // loop back label
m_slxFile << "\tS_CLEAR" << std::endl; // clear current state
pArg->Accept( *this );
if ( IC.fHasAxisAngle() )
m_slxFile << "\tilluminance2" << std::endl;
else
m_slxFile << "\tilluminance" << std::endl;
m_slxFile << "\tS_JZ " << iLabelC << std::endl; // skip processing of statement if light has no influence
m_slxFile << "\tRS_PUSH" << std::endl; // Push running state
m_slxFile << "\tRS_GET" << std::endl; // Get state
pStmt->Accept( *this ); // statement
m_slxFile << "\tRS_POP" << std::endl; // Pop the running state
m_slxFile << ":" << iLabelC << std::endl; // continuation label
m_slxFile << "\tadvance_illuminance" << std::endl;
m_slxFile << "\tjnz " << iLabelA << std::endl; // loop back jump
m_slxFile << ":" << iLabelB << std::endl; // completion label
}
void CqCodeGenOutput::Visit( IqParseNodeSolarConstruct& SC )
{
IqParseNode * pNode;
SC.GetInterface( ParseNode_Base, ( void** ) & pNode );
TqInt iLabelA = m_gcLabels++;
TqInt iLabelB = m_gcLabels++;
if ( SC.fHasAxisAngle() )
{
IqParseNode * pArg = pNode->pChild();
assert( pArg != 0 );
IqParseNode* pStmt = pArg->pNextSibling();
//assert(pStmt!=0);
m_slxFile << ":" << iLabelA << std::endl; // loop back label
m_slxFile << "\tS_CLEAR" << std::endl; // clear current state
pArg->Accept( *this );
m_slxFile << "\tsolar2" << std::endl;
m_slxFile << "\tS_JZ " << iLabelB << std::endl; // exit loop if false
m_slxFile << "\tRS_PUSH" << std::endl; // Push running state
m_slxFile << "\tRS_GET" << std::endl; // set running state
if ( pStmt ) pStmt->Accept( *this ); // statement
m_slxFile << "\tRS_POP" << std::endl; // Pop the running state
m_slxFile << "\tjmp " << iLabelA << std::endl; // loop back jump
m_slxFile << ":" << iLabelB << std::endl; // completion label
}
else
{
IqParseNode* pStmt = pNode->pChild();
m_slxFile << ":" << iLabelA << std::endl; // loop back label
m_slxFile << "\tS_CLEAR" << std::endl; // clear current state
m_slxFile << "\tsolar" << std::endl;
m_slxFile << "\tS_JZ " << iLabelB << std::endl; // exit loop if false
m_slxFile << "\tRS_PUSH" << std::endl; // Push running state
m_slxFile << "\tRS_GET" << std::endl; // set running state
if ( pStmt ) pStmt->Accept( *this ); // statement
m_slxFile << "\tRS_POP" << std::endl; // Pop the running state
m_slxFile << "\tjmp " << iLabelA << std::endl; // loop back jump
m_slxFile << ":" << iLabelB << std::endl; // completion label
}
}
void CqCodeGenOutput::Visit( IqParseNodeConditional& C )
{
IqParseNode * pNode;
C.GetInterface( ParseNode_Base, ( void** ) & pNode );
TqInt iLabelA = m_gcLabels++;
TqInt iLabelB = iLabelA;
IqParseNode* pArg = pNode->pChild();
assert( pArg != 0 );
IqParseNode* pTrueStmt = pArg->pNextSibling();
assert( pTrueStmt != 0 );
IqParseNode* pFalseStmt = pTrueStmt->pNextSibling();
m_slxFile << "\tS_CLEAR" << std::endl; // clear current state
pArg->Accept( *this ); // relation
m_slxFile << "\tS_GET" << std::endl; // Get the current state by popping the top value off the stack
m_slxFile << "\tRS_PUSH" << std::endl; // push the running state
m_slxFile << "\tRS_GET" << std::endl; // get current state to running state
if ( pFalseStmt )
{
iLabelB = m_gcLabels++;
m_slxFile << "\tRS_JZ " << iLabelB << std::endl; // skip true statement if all false
}
else
m_slxFile << "\tRS_JZ " << iLabelA << std::endl; // exit if all false
pTrueStmt->Accept( *this ); // true statement
if ( pFalseStmt )
{
m_slxFile << ":" << iLabelB << std::endl; // false part label
m_slxFile << "\tRS_JNZ " << iLabelA << std::endl; // exit if all true
m_slxFile << "\tRS_INVERSE" << std::endl; // Invert result
pFalseStmt->Accept( *this ); // false statement
}
m_slxFile << ":" << iLabelA << std::endl; // conditional exit point
m_slxFile << "\tRS_POP" << std::endl; // pop running state
}
void CqCodeGenOutput::Visit( IqParseNodeConditionalExpression& CE )
{
IqParseNode * pNode;
CE.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode * pArg = pNode->pChild();
assert( pArg != 0 );
IqParseNode* pTrueStmt = pArg->pNextSibling();
assert( pTrueStmt != 0 );
IqParseNode* pFalseStmt = pTrueStmt->pNextSibling();
TqInt typeT = static_cast<TqInt>( pTrueStmt->ResType() & Type_Mask );
char* pstrTType = gVariableTypeIdentifiers[ typeT ];
pTrueStmt->Accept( *this ); // true statement
pFalseStmt->Accept( *this ); // false statement
pArg->Accept( *this ); // relation
m_slxFile << "\tmerge" << pstrTType << std::endl;
}
void CqCodeGenOutput::Visit( IqParseNodeTypeCast& TC )
{
IqParseNode * pNode;
TC.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode * pOperand = pNode->pChild();
assert( pOperand != 0 );
TqInt typeA = pOperand->ResType() & Type_Mask;
TqInt typeB = TC.CastTo() & Type_Mask;
// No need to output a cast for the triple or h types.
pOperand->Accept( *this );
if ( !( ( typeA == Type_Point || typeA == Type_Normal || typeA == Type_Vector ) &&
( typeB == Type_Point || typeB == Type_Normal || typeB == Type_Vector ) ) )
{
char * pstrToType = gVariableTypeIdentifiers[ TC.CastTo() & Type_Mask ];
char* pstrFromType = gVariableTypeIdentifiers[ pOperand->ResType() & Type_Mask ];
m_slxFile << "\tset" << pstrFromType << pstrToType << std::endl;
}
}
void CqCodeGenOutput::Visit( IqParseNodeTriple& T )
{
IqParseNode * pNode;
T.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode * pA = pNode->pChild();
assert( pA != 0 );
IqParseNode* pB = pA->pNextSibling();
assert( pB != 0 );
IqParseNode* pC = pB->pNextSibling();
assert( pC != 0 );
// Output the 'push'es in reverse, so that Red/X ec is first off the stack when doing a 'sett?' instruction.
pC->Accept( *this );
pB->Accept( *this );
pA->Accept( *this );
}
void CqCodeGenOutput::Visit( IqParseNodeSixteenTuple& ST )
{
IqParseNode * pNode;
ST.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode * p00 = pNode->pChild(); assert( p00 != 0 );
IqParseNode* p01 = p00->pNextSibling(); assert( p01 != 0 );
IqParseNode* p02 = p01->pNextSibling(); assert( p02 != 0 );
IqParseNode* p03 = p02->pNextSibling(); assert( p03 != 0 );
IqParseNode* p10 = p03->pNextSibling(); assert( p10 != 0 );
IqParseNode* p11 = p10->pNextSibling(); assert( p11 != 0 );
IqParseNode* p12 = p11->pNextSibling(); assert( p12 != 0 );
IqParseNode* p13 = p12->pNextSibling(); assert( p13 != 0 );
IqParseNode* p20 = p13->pNextSibling(); assert( p20 != 0 );
IqParseNode* p21 = p20->pNextSibling(); assert( p21 != 0 );
IqParseNode* p22 = p21->pNextSibling(); assert( p22 != 0 );
IqParseNode* p23 = p22->pNextSibling(); assert( p23 != 0 );
IqParseNode* p30 = p23->pNextSibling(); assert( p30 != 0 );
IqParseNode* p31 = p30->pNextSibling(); assert( p31 != 0 );
IqParseNode* p32 = p31->pNextSibling(); assert( p32 != 0 );
IqParseNode* p33 = p32->pNextSibling(); assert( p33 != 0 );
p00->Accept( *this );
p01->Accept( *this );
p02->Accept( *this );
p03->Accept( *this );
p10->Accept( *this );
p11->Accept( *this );
p12->Accept( *this );
p13->Accept( *this );
p20->Accept( *this );
p21->Accept( *this );
p22->Accept( *this );
p23->Accept( *this );
p30->Accept( *this );
p31->Accept( *this );
p32->Accept( *this );
p33->Accept( *this );
}
void CqCodeGenOutput::Visit( IqParseNodeMessagePassingFunction& MPF )
{
IqParseNode * pNode;
MPF.GetInterface( ParseNode_Base, ( void** ) & pNode );
IqParseNode * pExpr = pNode->pChild();
pExpr->Accept( *this );
CqString strCommType( "surface" );
switch ( MPF.CommType() )
{
case CommTypeAtmosphere:
strCommType = "atmosphere";
break;
case CommTypeDisplacement:
strCommType = "displacement";
break;
case CommTypeLightsource:
strCommType = "lightsource";
break;
case CommTypeAttribute:
strCommType = "attribute";
break;
case CommTypeOption:
strCommType = "option";
break;
case CommTypeRendererInfo:
strCommType = "rendererinfo";
break;
case CommTypeIncident:
strCommType = "incident";
break;
case CommTypeOpposite:
strCommType = "opposite";
break;
case CommTypeTextureInfo:
strCommType = "textureinfo";
break;
}
// Output the comm function.
SqVarRef temp( MPF.VarRef() );
IqVarDef* pVD = pTranslatedVariable( temp, m_saTransTable );
if ( pVD )
{
pVD->IncUseCount();
if ( strCommType != "textureinfo" )
m_slxFile << "\t" << strCommType.c_str() << " " << pVD->strName() << std::endl;
else
{
CqString strExtra( MPF.Extra() );
m_slxFile << "\tpushv ";
m_slxFile << strExtra.c_str() << std::endl;
m_slxFile << "\t" << strCommType.c_str() << " " << pVD->strName() << std::endl;
}
}
}
///---------------------------------------------------------------------
/// OutputLocalVariable
/// Output details of this local variable.
void CqCodeGenOutput::OutputLocalVariable( const IqVarDef* pVar, std::ostream& out, std::string strOutName )
{
if ( pVar->UseCount() > 0 || ( pVar->Type() & Type_Param ) )
{
out << StorageSpec( pVar->Type() ).c_str() << " "
<< gVariableTypeNames[ pVar->Type() & Type_Mask ] << " "
<< pVar->strName();
if ( pVar->Type() & Type_Array )
out << "[" << pVar->ArrayLength() << "]";
out << std::endl;
}
}
CqString CqCodeGenOutput::StorageSpec( TqInt Type )
{
CqString strSpec( "" );
if ( Type & Type_Output ) strSpec += "output ";
if ( Type & Type_Param ) strSpec += "param ";
if ( Type & Type_Uniform ) strSpec += "uniform ";
if ( Type & Type_Varying ) strSpec += "varying ";
return ( strSpec );
}
const char* CqCodeGenOutput::MathOpName( TqInt op )
{
// Output this nodes operand name.
switch ( op )
{
case Op_Add:
return ( "add" );
break;
case Op_Sub:
return ( "sub" );
break;
case Op_Mul:
return ( "mul" );
break;
case Op_Div:
return ( "div" );
break;
case Op_Dot:
return ( "dot" );
break;
case Op_Crs:
return ( "crs" );
break;
case Op_Mod:
return ( "mod" );
break;
case Op_Lft:
return ( "left" );
break;
case Op_Rgt:
return ( "right" );
break;
case Op_And:
return ( "and" );
break;
case Op_Xor:
return ( "xor" );
break;
case Op_Or:
return ( "or" );
break;
case Op_L:
return ( "ls" );
break;
case Op_G:
return ( "gt" );
break;
case Op_GE:
return ( "ge" );
break;
case Op_LE:
return ( "le" );
break;
case Op_EQ:
return ( "eq" );
break;
case Op_NE:
return ( "ne" );
break;
case Op_Plus:
break;
case Op_Neg:
return ( "neg" );
break;
case Op_BitwiseComplement:
return ( "cmpl" );
break;
case Op_LogicalNot:
return ( "not" );
break;
case Op_LogAnd:
return ( "land" );
break;
case Op_LogOr:
return ( "lor" );
break;
}
return ( "error" );
}
//-----------------------------------------------------------------------
END_NAMESPACE( Aqsis )
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