std::string
OSLCompilerImpl::default_output_filename ()
{
if (m_shader && shader_decl())
return shader_decl()->shadername().string() + ".oso";
return std::string();
}
void
OSLCompilerImpl::write_oso_file (const std::string &outfilename)
{
ASSERT (m_osofile == NULL);
m_osofile = fopen (outfilename.c_str(), "w");
if (! m_osofile) {
error (ustring(), 0, "Could not open \"%s\"", outfilename.c_str());
return;
}
// FIXME -- remove the hard-coded version!
oso ("OpenShadingLanguage %d.%02d\n",
OSO_FILE_VERSION_MAJOR, OSO_FILE_VERSION_MINOR);
oso ("# Compiled by oslc %s\n", OSL_LIBRARY_VERSION_STRING);
ASTshader_declaration *shaderdecl = shader_decl();
oso ("%s %s", shaderdecl->shadertypename(),
shaderdecl->shadername().c_str());
// FIXME -- output global hints and metadata
oso ("\n");
// Output params, so they are first
BOOST_FOREACH (const Symbol *s, symtab()) {
if (s->symtype() == SymTypeParam || s->symtype() == SymTypeOutputParam)
write_oso_symbol (s);
}
// Output globals, locals, temps, const
BOOST_FOREACH (const Symbol *s, symtab()) {
if (s->symtype() == SymTypeLocal || s->symtype() == SymTypeTemp ||
s->symtype() == SymTypeGlobal || s->symtype() == SymTypeConst) {
// Don't bother writing symbols that are never used
if (s->lastuse() >= 0) {
write_oso_symbol (s);
}
}
}
// Output all opcodes
int lastline = -1;
ustring lastfile;
ustring lastmethod ("___uninitialized___");
for (OpcodeVec::iterator op = m_ircode.begin(); op != m_ircode.end(); ++op) {
if (lastmethod != op->method()) {
oso ("code %s\n", op->method().c_str());
lastmethod = op->method();
lastfile = ustring();
lastline = -1;
}
if (/*m_debug &&*/ op->sourcefile()) {
ustring file = op->sourcefile();
int line = op->sourceline();
if (file != lastfile || line != lastline)
oso ("# %s:%d\n# %s\n", file.c_str(), line,
retrieve_source (file, line).c_str());
}
// Op name
oso ("\t%s", op->opname().c_str());
// Register arguments
if (op->nargs())
oso (op->opname().length() < 8 ? "\t\t" : "\t");
for (int i = 0; i < op->nargs(); ++i) {
int arg = op->firstarg() + i;
oso ("%s ", m_opargs[arg]->dealias()->mangled().c_str());
}
// Jump targets
for (size_t i = 0; i < Opcode::max_jumps; ++i)
if (op->jump(i) >= 0)
oso ("%d ", op->jump(i));
//
// Opcode Hints
//
bool firsthint = true;
// %filename and %line document the source code file and line that
// contained code that generated this op. To avoid clutter, we
// only output these hints when they DIFFER from the previous op.
if (op->sourcefile()) {
if (op->sourcefile() != lastfile) {
lastfile = op->sourcefile();
oso ("%c%%filename{\"%s\"}", firsthint ? '\t' : ' ', lastfile.c_str());
firsthint = false;
}
if (op->sourceline() != lastline) {
lastline = op->sourceline();
oso ("%c%%line{%d}", firsthint ? '\t' : ' ', lastline);
firsthint = false;
}
}
// %argrw documents which arguments are read, written, or both (rwW).
if (op->nargs()) {
oso ("%c%%argrw{\"", firsthint ? '\t' : ' ');
for (int i = 0; i < op->nargs(); ++i) {
if (op->argwrite(i))
oso (op->argread(i) ? "W" : "w");
else
oso (op->argread(i) ? "r" : "-");
}
oso ("\"}");
firsthint = false;
}
// %argderivs documents which arguments have derivs taken of
// them by the op.
if (op->argtakesderivs_all()) {
oso (" %%argderivs{");
int any = 0;
for (int i = 0; i < op->nargs(); ++i)
if (op->argtakesderivs(i)) {
if (any++)
oso (",");
oso ("%d", i);
}
oso ("}");
firsthint = false;
}
oso ("\n");
}
if (lastmethod != main_method_name()) // If no code, still need a code marker
oso ("code %s\n", main_method_name().c_str());
oso ("\tend\n");
fclose (m_osofile);
m_osofile = NULL;
}
bool
OSLCompilerImpl::compile (const std::string &filename,
const std::vector<std::string> &options)
{
if (! boost::filesystem::exists (filename)) {
error (ustring(), 0, "Input file \"%s\" not found", filename.c_str());
return false;
}
std::string stdinclude;
#ifdef USE_BOOST_WAVE
std::vector<std::string> defines;
std::vector<std::string> undefines;
std::vector<std::string> includepaths;
#else
std::string cppoptions;
#endif
// Determine where the installed shader include directory is, and
// look for ../shaders/stdosl.h and force it to include.
std::string program = Sysutil::this_program_path ();
if (program.size()) {
boost::filesystem::path path (program); // our program
#if BOOST_VERSION >= 103600
path = path.parent_path (); // now the bin dir of our program
path = path.parent_path (); // now the parent dir
#else
path = path.branch_path (); // now the bin dir of our program
path = path.branch_path (); // now the parent dir
#endif
path = path / "shaders";
bool found = false;
if (boost::filesystem::exists (path)) {
path = path / "stdosl.h";
if (boost::filesystem::exists (path)) {
stdinclude = path.string();
found = true;
}
}
if (! found)
warning (ustring(filename), 0, "Unable to find \"%s\"",
path.string().c_str());
}
m_output_filename.clear ();
bool preprocess_only = false;
for (size_t i = 0; i < options.size(); ++i) {
if (options[i] == "-v") {
// verbose mode
m_verbose = true;
} else if (options[i] == "-q") {
// quiet mode
m_quiet = true;
} else if (options[i] == "-d") {
// debug mode
m_debug = true;
} else if (options[i] == "-E") {
preprocess_only = true;
} else if (options[i] == "-o" && i < options.size()-1) {
++i;
m_output_filename = options[i];
} else if (options[i] == "-O0") {
m_optimizelevel = 0;
} else if (options[i] == "-O" || options[i] == "-O1") {
m_optimizelevel = 1;
} else if (options[i] == "-O2") {
m_optimizelevel = 2;
#ifdef USE_BOOST_WAVE
} else if (options[i].c_str()[0] == '-' && options[i].size() > 2) {
// options meant for the preprocessor
if(options[i].c_str()[1] == 'D')
defines.push_back(options[i].substr(2));
else if(options[i].c_str()[1] == 'U')
undefines.push_back(options[i].substr(2));
else if(options[i].c_str()[1] == 'I')
includepaths.push_back(options[i].substr(2));
#else
} else {
// something meant for the cpp command
cppoptions += "\"";
cppoptions += options[i];
cppoptions += "\" ";
#endif
}
}
std::string preprocess_result;
#ifdef USE_BOOST_WAVE
if (! preprocess(filename, stdinclude, defines, undefines, includepaths, preprocess_result)) {
#else
if (! preprocess(filename, stdinclude, cppoptions, preprocess_result)) {
#endif
return false;
} else if (preprocess_only) {
std::cout << preprocess_result;
} else {
std::istringstream in (preprocess_result);
oslcompiler = this;
// Create a lexer, parse the file, delete the lexer
m_lexer = new oslFlexLexer (&in);
oslparse ();
bool parseerr = error_encountered();
delete m_lexer;
if (! parseerr) {
shader()->typecheck ();
}
// Print the parse tree if there were no errors
if (m_debug) {
symtab().print ();
if (shader())
shader()->print (std::cout);
}
if (! error_encountered()) {
shader()->codegen ();
// add_useparam ();
track_variable_dependencies ();
track_variable_lifetimes ();
check_for_illegal_writes ();
// if (m_optimizelevel >= 1)
// coalesce_temporaries ();
}
if (! error_encountered()) {
if (m_output_filename.size() == 0)
m_output_filename = default_output_filename ();
write_oso_file (m_output_filename);
}
oslcompiler = NULL;
}
return ! error_encountered();
}
struct GlobalTable {
const char *name;
TypeSpec type;
};
static GlobalTable globals[] = {
{ "P", TypeDesc::TypePoint },
{ "I", TypeDesc::TypeVector },
{ "N", TypeDesc::TypeNormal },
{ "Ng", TypeDesc::TypeNormal },
{ "u", TypeDesc::TypeFloat },
{ "v", TypeDesc::TypeFloat },
{ "dPdu", TypeDesc::TypeVector },
{ "dPdv", TypeDesc::TypeVector },
#if 0
// Light variables -- we don't seem to be on a route to support this
// kind of light shader, so comment these out for now.
{ "L", TypeDesc::TypeVector },
{ "Cl", TypeDesc::TypeColor },
{ "Ns", TypeDesc::TypeNormal },
{ "Pl", TypeDesc::TypePoint },
{ "Nl", TypeDesc::TypeNormal },
#endif
{ "Ps", TypeDesc::TypePoint },
{ "Ci", TypeSpec (TypeDesc::TypeColor, true) },
{ "time", TypeDesc::TypeFloat },
{ "dtime", TypeDesc::TypeFloat },
{ "dPdtime", TypeDesc::TypeVector },
{ NULL }
};
void
OSLCompilerImpl::initialize_globals ()
{
for (int i = 0; globals[i].name; ++i) {
Symbol *s = new Symbol (ustring(globals[i].name), globals[i].type,
SymTypeGlobal);
symtab().insert (s);
}
}
std::string
OSLCompilerImpl::default_output_filename ()
{
if (m_shader && shader_decl())
return shader_decl()->shadername().string() + ".oso";
return std::string();
}
void
OSLCompilerImpl::write_oso_metadata (const ASTNode *metanode) const
{
ASSERT (metanode->nodetype() == ASTNode::variable_declaration_node);
const ASTvariable_declaration *metavar = static_cast<const ASTvariable_declaration *>(metanode);
Symbol *metasym = metavar->sym();
ASSERT (metasym);
TypeSpec ts = metasym->typespec();
oso ("%%meta{%s,%s,", ts.string().c_str(), metasym->name().c_str());
const ASTNode *init = metavar->init().get();
ASSERT (init);
if (ts.is_string() && init->nodetype() == ASTNode::literal_node)
oso ("\"%s\"", ((const ASTliteral *)init)->strval());
else if (ts.is_int() && init->nodetype() == ASTNode::literal_node)
oso ("%d", ((const ASTliteral *)init)->intval());
else if (ts.is_float() && init->nodetype() == ASTNode::literal_node)
oso ("%.8g", ((const ASTliteral *)init)->floatval());
// FIXME -- what about type constructors?
else {
std::cout << "Error, don't know how to print metadata "
<< ts.string() << " with node type "
<< init->nodetypename() << "\n";
ASSERT (0); // FIXME
}
oso ("} ");
}
