#include <msp/core/raii.h>
+#include <msp/gl/extensions/ext_gpu_shader4.h>
#include <msp/strings/format.h>
#include <msp/strings/utils.h>
#include "error.h"
#include "program.h"
#include "programcompiler.h"
+#include "resources.h"
#include "shader.h"
using namespace std;
namespace {
const char builtins_src[] =
- "////// vertex\n"
+ "#pragma MSP stage(vertex)\n"
"out gl_PerVertex {\n"
" vec4 gl_Position;\n"
" float gl_ClipDistance[];\n"
- "};"
- "////// geometry\n"
+ "};\n"
+ "#pragma MSP stage(geometry)\n"
"in gl_PerVertex {\n"
" vec4 gl_Position;\n"
" float gl_ClipDistance[];\n"
using namespace ProgramSyntax;
+// XXX For some reason global declarations are emitted for otherwise undeclared local variables
+
ProgramCompiler::ProgramCompiler():
+ resources(0),
module(0)
{ }
-void ProgramCompiler::compile(const string &source)
+ProgramCompiler::~ProgramCompiler()
+{
+ delete module;
+}
+
+void ProgramCompiler::compile(const string &source, const string &src_name)
{
- module = &parser.parse(source);
+ resources = 0;
+ delete module;
+ module = new Module();
+ ProgramParser parser;
+ imported_names.insert(src_name);
+ append_module(parser.parse(source, src_name));
process();
}
-void ProgramCompiler::compile(IO::Base &io)
+void ProgramCompiler::compile(IO::Base &io, Resources *res, const string &src_name)
{
- module = &parser.parse(io);
+ resources = res;
+ delete module;
+ module = new Module();
+ ProgramParser parser;
+ imported_names.insert(src_name);
+ append_module(parser.parse(io, src_name));
process();
}
+void ProgramCompiler::compile(IO::Base &io, const string &src_name)
+{
+ compile(io, 0, src_name);
+}
+
void ProgramCompiler::add_shaders(Program &program)
{
if(!module)
throw invalid_operation("ProgramCompiler::add_shaders");
- string head = "#version 150\n";
for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
{
if(i->type==VERTEX)
- program.attach_shader_owned(new VertexShader(head+create_source(*i)));
+ {
+ program.attach_shader_owned(new VertexShader(apply<Formatter>(*i)));
+ for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
+ program.bind_attribute(j->second, j->first);
+ }
else if(i->type==GEOMETRY)
- program.attach_shader_owned(new GeometryShader(head+create_source(*i)));
+ program.attach_shader_owned(new GeometryShader(apply<Formatter>(*i)));
else if(i->type==FRAGMENT)
- program.attach_shader_owned(new FragmentShader(head+create_source(*i)));
+ {
+ program.attach_shader_owned(new FragmentShader(apply<Formatter>(*i)));
+ if(EXT_gpu_shader4)
+ {
+ for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
+ program.bind_fragment_data(j->second, j->first);
+ }
+ }
}
-
- program.bind_attribute(VERTEX4, "vertex");
- program.bind_attribute(NORMAL3, "normal");
- program.bind_attribute(COLOR4_FLOAT, "color");
- program.bind_attribute(TEXCOORD4, "texcoord");
}
Module *ProgramCompiler::create_builtins_module()
{
ProgramParser parser;
- Module *module = new Module(parser.parse(builtins_src));
+ Module *module = new Module(parser.parse(builtins_src, "<builtin>"));
for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
{
VariableResolver resolver;
return 0;
}
+void ProgramCompiler::append_module(ProgramSyntax::Module &mod)
+{
+ list<Import *> imports = apply<NodeGatherer<Import> >(mod.shared);
+ for(list<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
+ import((*i)->module);
+ apply<NodeRemover>(mod.shared, set<Node *>(imports.begin(), imports.end()));
+
+ append_stage(mod.shared);
+ for(list<Stage>::iterator i=mod.stages.begin(); i!=mod.stages.end(); ++i)
+ append_stage(*i);
+}
+
+void ProgramCompiler::append_stage(Stage &stage)
+{
+ Stage *target = 0;
+ if(stage.type==SHARED)
+ target = &module->shared;
+ else
+ {
+ list<Stage>::iterator i;
+ for(i=module->stages.begin(); (i!=module->stages.end() && i->type<stage.type); ++i) ;
+ if(i==module->stages.end() || i->type>stage.type)
+ {
+ list<Stage>::iterator j = module->stages.insert(i, stage.type);
+ if(i!=module->stages.end())
+ i->previous = &*j;
+ i = j;
+ if(i!=module->stages.begin())
+ i->previous = &*--j;
+ }
+
+ target = &*i;
+ }
+
+ for(NodeList<Node>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
+ target->content.body.push_back(*i);
+ apply<DeclarationCombiner>(*target);
+}
+
void ProgramCompiler::process()
{
for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
else
++i;
}
+ for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+ finalize(*i);
+}
+
+void ProgramCompiler::import(const string &name)
+{
+ string fn = name+".glsl";
+ if(imported_names.count(fn))
+ return;
+ imported_names.insert(fn);
+
+ RefPtr<IO::Seekable> io = (resources ? resources->open_raw(fn) : Resources::get_builtins().open(fn));
+ if(!io)
+ throw runtime_error(format("module %s not found", name));
+ ProgramParser import_parser;
+ append_module(import_parser.parse(*io, fn));
}
void ProgramCompiler::generate(Stage &stage)
{
inject_block(stage.content, module->shared.content);
+ apply<DeclarationReorderer>(stage);
+ apply<FunctionResolver>(stage);
apply<VariableResolver>(stage);
apply<InterfaceGenerator>(stage);
apply<VariableResolver>(stage);
- apply<VariableRenamer>(stage);
+ apply<DeclarationReorderer>(stage);
+ apply<LegacyConverter>(stage);
}
bool ProgramCompiler::optimize(Stage &stage)
{
- UnusedVariableLocator unused_locator;
- unused_locator.apply(stage);
+ apply<ConstantConditionEliminator>(stage);
- NodeRemover remover;
- remover.to_remove = unused_locator.unused_nodes;
- remover.apply(stage);
+ set<FunctionDeclaration *> inlineable = apply<InlineableFunctionLocator>(stage);
+ apply<FunctionInliner>(stage, inlineable);
- return !unused_locator.unused_nodes.empty();
+ set<Node *> unused = apply<UnusedVariableLocator>(stage);
+ set<Node *> unused2 = apply<UnusedFunctionLocator>(stage);
+ unused.insert(unused2.begin(), unused2.end());
+ apply<NodeRemover>(stage, unused);
+
+ return !unused.empty();
+}
+
+void ProgramCompiler::finalize(Stage &stage)
+{
+ if(get_gl_api()==OPENGL_ES2)
+ apply<DefaultPrecisionGenerator>(stage);
+ else
+ apply<PrecisionRemover>(stage);
}
void ProgramCompiler::inject_block(Block &target, const Block &source)
{
- list<NodePtr<Node> >::iterator insert_point = target.body.begin();
- for(list<NodePtr<Node> >::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
+ list<RefPtr<Node> >::iterator insert_point = target.body.begin();
+ for(list<RefPtr<Node> >::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
target.body.insert(insert_point, (*i)->clone());
}
template<typename T>
-void ProgramCompiler::apply(Stage &stage)
+typename T::ResultType ProgramCompiler::apply(Stage &stage)
{
T visitor;
visitor.apply(stage);
+ return visitor.get_result();
}
-string ProgramCompiler::create_source(Stage &stage)
+template<typename T, typename A>
+typename T::ResultType ProgramCompiler::apply(Stage &stage, const A &arg)
{
- Formatter formatter;
- formatter.apply(stage);
- return formatter.formatted;
+ T visitor(arg);
+ visitor.apply(stage);
+ return visitor.get_result();
}
}
+ProgramCompiler::BlockModifier::BlockModifier():
+ remove_node(false)
+{ }
+
+void ProgramCompiler::BlockModifier::flatten_block(Block &block)
+{
+ insert_nodes.insert(insert_nodes.end(), block.body.begin(), block.body.end());
+ remove_node = true;
+}
+
+void ProgramCompiler::BlockModifier::apply_and_increment(Block &block, list<RefPtr<Node> >::iterator &i)
+{
+ block.body.insert(i, insert_nodes.begin(), insert_nodes.end());
+ insert_nodes.clear();
+
+ if(remove_node)
+ block.body.erase(i++);
+ else
+ ++i;
+ remove_node = false;
+}
+
+void ProgramCompiler::BlockModifier::visit(Block &block)
+{
+ for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
+ {
+ (*i)->visit(*this);
+ apply_and_increment(block, i);
+ }
+}
+
+
ProgramCompiler::Formatter::Formatter():
indent(0),
parameter_list(false),
- else_if(false)
+ else_if(0)
{ }
+void ProgramCompiler::Formatter::apply(ProgramSyntax::Stage &s)
+{
+ GLApi api = get_gl_api();
+ const Version &ver = s.required_version;
+
+ if(ver)
+ {
+ formatted += format("#version %d%02d", ver.major, ver.minor);
+ if(api==OPENGL_ES2 && ver>=Version(3, 0))
+ formatted += " es";
+ formatted += '\n';
+ }
+
+ Visitor::apply(s);
+}
+
void ProgramCompiler::Formatter::visit(Literal &literal)
{
formatted += literal.token;
void ProgramCompiler::Formatter::visit(BinaryExpression &binary)
{
binary.left->visit(*this);
- if(binary.assignment)
- formatted += format(" %s ", binary.oper);
- else
- formatted += binary.oper;
+ formatted += binary.oper;
binary.right->visit(*this);
formatted += binary.after;
}
+void ProgramCompiler::Formatter::visit(Assignment &assign)
+{
+ assign.left->visit(*this);
+ formatted += format(" %s ", assign.oper);
+ assign.right->visit(*this);
+}
+
void ProgramCompiler::Formatter::visit(FunctionCall &call)
{
formatted += format("%s(", call.name);
- for(vector<NodePtr<Expression> >::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
+ for(vector<RefPtr<Expression> >::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
{
if(i!=call.arguments.begin())
formatted += ", ";
void ProgramCompiler::Formatter::visit(Block &block)
{
- if(block.use_braces)
- {
- if(else_if)
- {
- formatted += '\n';
- else_if = false;
- }
- formatted += format("%s{\n", string(indent*2, ' '));
- }
+ if(else_if)
+ --else_if;
- bool change_indent = (!formatted.empty() && !else_if);
- indent += change_indent;
+ unsigned brace_indent = indent;
+ bool use_braces = (block.use_braces || (indent && block.body.size()!=1));
+ if(use_braces)
+ formatted += format("%s{\n", string(brace_indent*2, ' '));
+
+ SetForScope<unsigned> set(indent, indent+(indent>0 || use_braces));
string spaces(indent*2, ' ');
- for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
+ for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
{
if(i!=block.body.begin())
formatted += '\n';
- if(!else_if)
- formatted += spaces;
+ formatted += spaces;
(*i)->visit(*this);
+ else_if = 0;
}
- indent -= change_indent;
- if(block.use_braces)
- formatted += format("\n%s}", string(indent*2, ' '));
+ if(use_braces)
+ formatted += format("\n%s}", string(brace_indent*2, ' '));
+}
+
+void ProgramCompiler::Formatter::visit(Import &import)
+{
+ formatted += format("import %s;", import.module);
+}
+
+void ProgramCompiler::Formatter::visit(Precision &prec)
+{
+ formatted += format("precision %s %s;", prec.precision, prec.type);
}
void ProgramCompiler::Formatter::visit(Layout &layout)
if(!i->value.empty())
formatted += format("=%s", i->value);
}
- formatted += format(") %s;", layout.interface);
+ formatted += ')';
+}
+
+void ProgramCompiler::Formatter::visit(InterfaceLayout &layout)
+{
+ layout.layout.visit(*this);
+ formatted += format(" %s;", layout.interface);
}
void ProgramCompiler::Formatter::visit(StructDeclaration &strct)
void ProgramCompiler::Formatter::visit(VariableDeclaration &var)
{
+ if(var.layout)
+ {
+ var.layout->visit(*this);
+ formatted += ' ';
+ }
if(var.constant)
formatted += "const ";
if(!var.sampling.empty())
formatted += format("%s ", var.sampling);
if(!var.interface.empty() && var.interface!=block_interface)
- formatted += format("%s ", var.interface);
+ {
+ string interface = var.interface;
+ if(stage->required_version<Version(1, 30))
+ {
+ if(stage->type==VERTEX && var.interface=="in")
+ interface = "attribute";
+ else if((stage->type==VERTEX && var.interface=="out") || (stage->type==FRAGMENT && var.interface=="in"))
+ interface = "varying";
+ }
+ formatted += format("%s ", interface);
+ }
+ if(!var.precision.empty())
+ formatted += format("%s ", var.precision);
formatted += format("%s %s", var.type, var.name);
if(var.array)
{
void ProgramCompiler::Formatter::visit(FunctionDeclaration &func)
{
formatted += format("%s %s(", func.return_type, func.name);
- for(vector<NodePtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
+ for(vector<RefPtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
{
if(i!=func.parameters.begin())
formatted += ", ";
(*i)->visit(*this);
}
formatted += ')';
- if(func.definition)
+ if(func.definition==&func)
{
formatted += '\n';
func.body.visit(*this);
void ProgramCompiler::Formatter::visit(Conditional &cond)
{
if(else_if)
- {
- formatted += ' ';
- else_if = false;
- }
+ formatted.replace(formatted.rfind('\n'), string::npos, 1, ' ');
+
+ indent -= else_if;
formatted += "if(";
cond.condition->visit(*this);
cond.body.visit(*this);
if(!cond.else_body.body.empty())
{
- formatted += format("\n%selse", string(indent*2, ' '));
- SetFlag set(else_if);
+ formatted += format("\n%selse\n", string(indent*2, ' '));
+ SetForScope<unsigned> set(else_if, 2);
cond.else_body.visit(*this);
}
}
formatted += ';';
}
+void ProgramCompiler::Formatter::visit(Jump &jump)
+{
+ formatted += jump.keyword;
+ formatted += ';';
+}
+
+
+ProgramCompiler::DeclarationCombiner::DeclarationCombiner():
+ toplevel(true)
+{ }
+
+void ProgramCompiler::DeclarationCombiner::visit(Block &block)
+{
+ if(!toplevel)
+ return;
+
+ SetForScope<bool> set(toplevel, false);
+ BlockModifier::visit(block);
+}
+
+void ProgramCompiler::DeclarationCombiner::visit(FunctionDeclaration &func)
+{
+ vector<FunctionDeclaration *> &decls = functions[func.name];
+ if(func.definition)
+ {
+ for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
+ {
+ (*i)->definition = func.definition;
+ (*i)->body.body.clear();
+ }
+ }
+ decls.push_back(&func);
+}
+
+void ProgramCompiler::DeclarationCombiner::visit(VariableDeclaration &var)
+{
+ VariableDeclaration *&ptr = variables[var.name];
+ if(ptr)
+ {
+ ptr->type = var.type;
+ if(var.init_expression)
+ ptr->init_expression = var.init_expression;
+ remove_node = true;
+ }
+ else
+ ptr = &var;
+}
+
ProgramCompiler::VariableResolver::VariableResolver():
- anonymous(false)
+ anonymous(false),
+ record_target(false),
+ assignment_target(0),
+ self_referencing(false)
{ }
void ProgramCompiler::VariableResolver::apply(Stage &s)
break;
}
}
+
+ if(record_target)
+ {
+ if(assignment_target)
+ {
+ record_target = false;
+ assignment_target = 0;
+ }
+ else
+ assignment_target = var.declaration;
+ }
+ else if(var.declaration && var.declaration==assignment_target)
+ self_referencing = true;
}
void ProgramCompiler::VariableResolver::visit(MemberAccess &memacc)
{
if(binary.oper=="[")
{
- binary.right->visit(*this);
+ {
+ SetForScope<bool> set(record_target, false);
+ binary.right->visit(*this);
+ }
type = 0;
binary.left->visit(*this);
}
}
}
+void ProgramCompiler::VariableResolver::visit(Assignment &assign)
+{
+ {
+ SetFlag set(record_target);
+ assignment_target = 0;
+ assign.left->visit(*this);
+ }
+
+ self_referencing = false;
+ assign.right->visit(*this);
+
+ assign.self_referencing = (self_referencing || assign.oper!="=");
+ assign.target_declaration = assignment_target;
+}
+
void ProgramCompiler::VariableResolver::visit(StructDeclaration &strct)
{
TraversingVisitor::visit(strct);
}
+void ProgramCompiler::FunctionResolver::visit(FunctionCall &call)
+{
+ map<string, vector<FunctionDeclaration *> >::iterator i = functions.find(call.name);
+ if(i!=functions.end())
+ call.declaration = i->second.back();
+
+ TraversingVisitor::visit(call);
+}
+
+void ProgramCompiler::FunctionResolver::visit(FunctionDeclaration &func)
+{
+ vector<FunctionDeclaration *> &decls = functions[func.name];
+ if(func.definition)
+ {
+ for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
+ (*i)->definition = func.definition;
+ decls.clear();
+ decls.push_back(&func);
+ }
+ else if(!decls.empty() && decls.back()->definition)
+ func.definition = decls.back()->definition;
+ else
+ decls.push_back(&func);
+
+ TraversingVisitor::visit(func);
+}
+
+
ProgramCompiler::InterfaceGenerator::InterfaceGenerator():
- scope_level(0),
- remove_node(false)
+ scope_level(0)
{ }
string ProgramCompiler::InterfaceGenerator::get_out_prefix(StageType type)
void ProgramCompiler::InterfaceGenerator::visit(Block &block)
{
SetForScope<unsigned> set(scope_level, scope_level+1);
- for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
+ for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
{
(*i)->visit(*this);
if(scope_level==1)
{
- for(map<string, VariableDeclaration *>::iterator j=iface_declarations.begin(); j!=iface_declarations.end(); ++j)
+ for(map<string, RefPtr<VariableDeclaration> >::iterator j=iface_declarations.begin(); j!=iface_declarations.end(); ++j)
{
- list<NodePtr<Node> >::iterator k = block.body.insert(i, j->second);
+ list<RefPtr<Node> >::iterator k = block.body.insert(i, j->second);
(*k)->visit(*this);
}
iface_declarations.clear();
}
- for(list<Node *>::iterator j=insert_nodes.begin(); j!=insert_nodes.end(); ++j)
- block.body.insert(i, *j);
- insert_nodes.clear();
-
- if(remove_node)
- block.body.erase(i++);
- else
- ++i;
- remove_node = false;
+ apply_and_increment(block, i);
}
}
void ProgramCompiler::InterfaceGenerator::insert_assignment(const string &left, ProgramSyntax::Expression *right)
{
- BinaryExpression *assign = new BinaryExpression;
+ Assignment *assign = new Assignment;
VariableReference *ref = new VariableReference;
ref->name = left;
assign->left = ref;
assign->oper = "=";
assign->right = right;
- assign->assignment = true;
ExpressionStatement *stmt = new ExpressionStatement;
stmt->expression = assign;
+ stmt->visit(*this);
insert_nodes.push_back(stmt);
}
if(i==prev_out.end())
i = prev_out.find(in_prefix+var.name);
if(i!=prev_out.end())
- generate_interface(*i->second, "in", var.name);
+ {
+ generate_interface(*i->second, "in", i->second->name);
+ var.name = i->second->name;
+ }
}
void ProgramCompiler::InterfaceGenerator::visit(VariableDeclaration &var)
{
remove_node = true;
if(var.init_expression)
+ {
insert_assignment(var.name, var.init_expression->clone());
+ return;
+ }
}
}
else if(var.interface=="in")
for(map<string, VariableDeclaration *>::const_iterator i=stage->in_variables.begin(); i!=stage->in_variables.end(); ++i)
pass_vars.push_back(i->second);
- for(map<string, VariableDeclaration *>::const_iterator i=iface_declarations.begin(); i!=iface_declarations.end(); ++i)
+ for(map<string, RefPtr<VariableDeclaration> >::const_iterator i=iface_declarations.begin(); i!=iface_declarations.end(); ++i)
if(i->second->interface=="in")
- pass_vars.push_back(i->second);
+ pass_vars.push_back(i->second.get());
if(stage->previous)
{
}
}
+ if(stage->type==GEOMETRY)
+ {
+ VariableReference *ref = new VariableReference;
+ ref->name = "gl_in";
+
+ BinaryExpression *subscript = new BinaryExpression;
+ subscript->left = ref;
+ subscript->oper = "[";
+ subscript->right = pass.subscript;
+ subscript->after = "]";
+
+ MemberAccess *memacc = new MemberAccess;
+ memacc->left = subscript;
+ memacc->member = "gl_Position";
+
+ insert_assignment("gl_Position", memacc);
+ }
+
for(vector<VariableDeclaration *>::const_iterator i=pass_vars.begin(); i!=pass_vars.end(); ++i)
{
string out_name = change_prefix((*i)->name, out_prefix);
}
-void ProgramCompiler::VariableRenamer::visit(VariableReference &var)
+ProgramCompiler::DeclarationReorderer::DeclarationReorderer():
+ kind(NO_DECLARATION)
+{ }
+
+void ProgramCompiler::DeclarationReorderer::visit(Block &block)
+{
+ list<RefPtr<Node> >::iterator struct_insert_point = block.body.end();
+ list<RefPtr<Node> >::iterator variable_insert_point = block.body.end();
+
+ for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
+ {
+ kind = NO_DECLARATION;
+ (*i)->visit(*this);
+
+ bool moved = false;
+ if(kind==STRUCT && struct_insert_point!=block.body.end())
+ {
+ block.body.insert(struct_insert_point, *i);
+ moved = true;
+ }
+ else if(kind>STRUCT && struct_insert_point==block.body.end())
+ struct_insert_point = i;
+
+ if(kind==VARIABLE && variable_insert_point!=block.body.end())
+ {
+ block.body.insert(variable_insert_point, *i);
+ moved = true;
+ }
+ else if(kind>VARIABLE && variable_insert_point==block.body.end())
+ variable_insert_point = i;
+
+ if(moved)
+ block.body.erase(i++);
+ else
+ ++i;
+ }
+}
+
+
+ProgramCompiler::InlineableFunctionLocator::InlineableFunctionLocator():
+ in_function(0)
+{ }
+
+void ProgramCompiler::InlineableFunctionLocator::visit(FunctionCall &call)
{
- if(var.declaration)
- var.name = var.declaration->name;
+ FunctionDeclaration *def = call.declaration;
+ if(def && def->definition!=def)
+ def = def->definition;
+
+ if(def)
+ {
+ unsigned &count = refcounts[def];
+ ++count;
+ if(count>1 || def==in_function)
+ inlineable.erase(def);
+ }
+
+ TraversingVisitor::visit(call);
}
-void ProgramCompiler::VariableRenamer::visit(VariableDeclaration &var)
+void ProgramCompiler::InlineableFunctionLocator::visit(FunctionDeclaration &func)
{
- if(var.linked_declaration)
- var.name = var.linked_declaration->name;
- TraversingVisitor::visit(var);
+ unsigned &count = refcounts[func.definition];
+ if(!count && func.parameters.empty())
+ inlineable.insert(func.definition);
+
+ SetForScope<FunctionDeclaration *> set(in_function, &func);
+ TraversingVisitor::visit(func);
}
-ProgramCompiler::UnusedVariableLocator::UnusedVariableLocator():
- aggregate(0),
- assignment(false),
- record_target(false),
- assignment_target(0),
- indeterminate_target(false),
- self_referencing(false)
+ProgramCompiler::FunctionInliner::FunctionInliner():
+ extract_result(0)
{ }
-void ProgramCompiler::UnusedVariableLocator::visit(VariableReference &var)
+ProgramCompiler::FunctionInliner::FunctionInliner(const set<FunctionDeclaration *> &in):
+ inlineable(in),
+ extract_result(0)
+{ }
+
+void ProgramCompiler::FunctionInliner::visit_and_inline(RefPtr<Expression> &ptr)
{
- if(record_target)
+ inline_result = 0;
+ ptr->visit(*this);
+ if(inline_result)
+ ptr = inline_result;
+}
+
+void ProgramCompiler::FunctionInliner::visit(Block &block)
+{
+ if(extract_result)
+ --extract_result;
+
+ for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
{
- if(assignment_target)
- indeterminate_target = true;
- else
- assignment_target = var.declaration;
+ (*i)->visit(*this);
+ if(extract_result)
+ --extract_result;
}
+}
+
+void ProgramCompiler::FunctionInliner::visit(UnaryExpression &unary)
+{
+ visit_and_inline(unary.expression);
+ inline_result = 0;
+}
+
+void ProgramCompiler::FunctionInliner::visit(BinaryExpression &binary)
+{
+ visit_and_inline(binary.left);
+ visit_and_inline(binary.right);
+ inline_result = 0;
+}
+
+void ProgramCompiler::FunctionInliner::visit(FunctionCall &call)
+{
+ for(vector<RefPtr<Expression> >::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
+ visit_and_inline(*i);
+
+ FunctionDeclaration *def = call.declaration;
+ if(def && def->definition!=def)
+ def = def->definition;
+
+ if(def && inlineable.count(def))
+ {
+ extract_result = 2;
+ def->visit(*this);
+ }
+ else
+ inline_result = 0;
+}
+
+void ProgramCompiler::FunctionInliner::visit(Return &ret)
+{
+ TraversingVisitor::visit(ret);
+
+ if(extract_result)
+ inline_result = ret.expression->clone();
+}
+
+
+ProgramCompiler::ExpressionEvaluator::ExpressionEvaluator():
+ variable_values(0),
+ result(0.0f),
+ result_valid(false)
+{ }
+
+ProgramCompiler::ExpressionEvaluator::ExpressionEvaluator(const ValueMap &v):
+ variable_values(&v),
+ result(0.0f),
+ result_valid(false)
+{ }
+
+void ProgramCompiler::ExpressionEvaluator::visit(Literal &literal)
+{
+ if(literal.token=="true")
+ result = 1.0f;
+ else if(literal.token=="false")
+ result = 0.0f;
else
+ result = lexical_cast<float>(literal.token);
+ result_valid = true;
+}
+
+void ProgramCompiler::ExpressionEvaluator::visit(ParenthesizedExpression &parexp)
+{
+ parexp.expression->visit(*this);
+}
+
+void ProgramCompiler::ExpressionEvaluator::visit(VariableReference &var)
+{
+ if(!var.declaration)
+ return;
+
+ if(variable_values)
{
- unused_nodes.erase(var.declaration);
+ ValueMap::const_iterator i = variable_values->find(var.declaration);
+ if(i!=variable_values->end())
+ i->second->visit(*this);
+ }
+ else if(var.declaration->init_expression)
+ var.declaration->init_expression->visit(*this);
+}
+
+void ProgramCompiler::ExpressionEvaluator::visit(UnaryExpression &unary)
+{
+ result_valid = false;
+ unary.expression->visit(*this);
+ if(!result_valid)
+ return;
+
+ if(unary.oper=="!")
+ result = !result;
+ else
+ result_valid = false;
+}
+
+void ProgramCompiler::ExpressionEvaluator::visit(BinaryExpression &binary)
+{
+ result_valid = false;
+ binary.left->visit(*this);
+ if(!result_valid)
+ return;
+
+ float left_result = result;
+ result_valid = false;
+ binary.right->visit(*this);
+ if(!result_valid)
+ return;
+
+ if(binary.oper=="<")
+ result = (left_result<result);
+ else if(binary.oper=="<=")
+ result = (left_result<=result);
+ else if(binary.oper==">")
+ result = (left_result>result);
+ else if(binary.oper==">=")
+ result = (left_result>=result);
+ else if(binary.oper=="==")
+ result = (left_result==result);
+ else if(binary.oper=="!=")
+ result = (left_result!=result);
+ else if(binary.oper=="&&")
+ result = (left_result && result);
+ else if(binary.oper=="||")
+ result = (left_result || result);
+ else
+ result_valid = false;
+}
- map<VariableDeclaration *, Node *>::iterator i = assignments.find(var.declaration);
- if(i!=assignments.end())
+
+ProgramCompiler::ConstantConditionEliminator::ConstantConditionEliminator():
+ scope_level(0)
+{ }
+
+void ProgramCompiler::ConstantConditionEliminator::visit(Block &block)
+{
+ SetForScope<unsigned> set(scope_level, scope_level+1);
+ BlockModifier::visit(block);
+
+ for(map<string, VariableDeclaration *>::const_iterator i=block.variables.begin(); i!=block.variables.end(); ++i)
+ variable_values.erase(i->second);
+}
+
+void ProgramCompiler::ConstantConditionEliminator::visit(Assignment &assign)
+{
+ variable_values.erase(assign.target_declaration);
+}
+
+void ProgramCompiler::ConstantConditionEliminator::visit(VariableDeclaration &var)
+{
+ if(var.constant || scope_level>1)
+ variable_values[&var] = var.init_expression.get();
+}
+
+void ProgramCompiler::ConstantConditionEliminator::visit(Conditional &cond)
+{
+ ExpressionEvaluator eval(variable_values);
+ cond.condition->visit(eval);
+ if(eval.result_valid)
+ flatten_block(eval.result ? cond.body : cond.else_body);
+ else
+ TraversingVisitor::visit(cond);
+}
+
+void ProgramCompiler::ConstantConditionEliminator::visit(Iteration &iter)
+{
+ if(iter.condition)
+ {
+ ExpressionEvaluator eval;
+ iter.condition->visit(eval);
+ if(eval.result_valid && !eval.result)
{
- unused_nodes.erase(i->second);
- assignments.erase(i);
+ remove_node = true;
+ return;
}
+ }
+
+ TraversingVisitor::visit(iter);
+}
- if(assignment && var.declaration==assignment_target)
- self_referencing = true;
+
+ProgramCompiler::UnusedVariableLocator::UnusedVariableLocator():
+ aggregate(0),
+ assignment(0),
+ assignment_target(false),
+ global_scope(true)
+{ }
+
+void ProgramCompiler::UnusedVariableLocator::apply(Stage &s)
+{
+ variables.push_back(BlockVariableMap());
+ Visitor::apply(s);
+ BlockVariableMap &global_variables = variables.back();
+ for(BlockVariableMap::iterator i=global_variables.begin(); i!=global_variables.end(); ++i)
+ {
+ if(i->first->interface=="out" && (s.type==FRAGMENT || i->first->linked_declaration || !i->first->name.compare(0, 3, "gl_")))
+ continue;
+ if(!i->second.referenced)
+ {
+ unused_nodes.insert(i->first);
+ clear_assignments(i->second, true);
+ }
}
+ variables.pop_back();
+}
+void ProgramCompiler::UnusedVariableLocator::visit(VariableReference &var)
+{
map<VariableDeclaration *, Node *>::iterator i = aggregates.find(var.declaration);
if(i!=aggregates.end())
unused_nodes.erase(i->second);
+
+ if(var.declaration && !assignment_target)
+ {
+ VariableInfo &var_info = variables.back()[var.declaration];
+ var_info.assignments.clear();
+ var_info.referenced = true;
+ }
}
void ProgramCompiler::UnusedVariableLocator::visit(MemberAccess &memacc)
void ProgramCompiler::UnusedVariableLocator::visit(BinaryExpression &binary)
{
- if(binary.assignment)
- {
- assignment = true;
- {
- SetFlag set(record_target);
- binary.left->visit(*this);
- }
- if(binary.oper!="=")
- self_referencing = true;
- binary.right->visit(*this);
- }
- else if(record_target && binary.oper=="[")
+ if(binary.oper=="[")
{
binary.left->visit(*this);
- SetForScope<bool> set(record_target, false);
+ SetForScope<bool> set(assignment_target, false);
binary.right->visit(*this);
}
else
TraversingVisitor::visit(binary);
}
+void ProgramCompiler::UnusedVariableLocator::visit(Assignment &assign)
+{
+ {
+ SetForScope<bool> set(assignment_target, !assign.self_referencing);
+ assign.left->visit(*this);
+ }
+ assign.right->visit(*this);
+ assignment = &assign;
+}
+
+void ProgramCompiler::UnusedVariableLocator::record_assignment(VariableDeclaration &var, Node &node, bool self_ref)
+{
+ VariableInfo &var_info = variables.back()[&var];
+ if(!self_ref)
+ clear_assignments(var_info, true);
+ var_info.assignments.push_back(&node);
+ var_info.conditionally_assigned = false;
+}
+
+void ProgramCompiler::UnusedVariableLocator::clear_assignments(VariableInfo &var_info, bool mark_unused)
+{
+ if(mark_unused)
+ {
+ for(vector<Node *>::iterator i=var_info.assignments.begin(); i!=var_info.assignments.end(); ++i)
+ unused_nodes.insert(*i);
+ }
+ var_info.assignments.clear();
+}
+
void ProgramCompiler::UnusedVariableLocator::visit(ExpressionStatement &expr)
{
- assignment = false;
- assignment_target = 0;
- indeterminate_target = false;
- self_referencing = false;
+ assignment = 0;
TraversingVisitor::visit(expr);
- if(assignment && assignment_target && !indeterminate_target)
- {
- Node *&assign = assignments[assignment_target];
- if(self_referencing)
- unused_nodes.erase(assign);
- else if(assign)
- unused_nodes.insert(assign);
- assign = &expr;
- if(assignment_target->interface=="out" && (stage->type==FRAGMENT || assignment_target->linked_declaration))
- unused_nodes.erase(assignment_target);
- else
- unused_nodes.insert(&expr);
- }
- assignment = false;
+ if(assignment && assignment->target_declaration)
+ record_assignment(*assignment->target_declaration, expr, assignment->self_referencing);
}
void ProgramCompiler::UnusedVariableLocator::visit(StructDeclaration &strct)
aggregates[&var] = aggregate;
else
{
- unused_nodes.insert(&var);
+ variables.back()[&var].local = true;
if(var.init_expression)
- {
- unused_nodes.insert(&*var.init_expression);
- assignments[&var] = &*var.init_expression;
- }
+ record_assignment(var, *var.init_expression, false);
}
unused_nodes.erase(var.type_declaration);
TraversingVisitor::visit(var);
TraversingVisitor::visit(iface);
}
+void ProgramCompiler::UnusedVariableLocator::visit(FunctionDeclaration &func)
+{
+ variables.push_back(BlockVariableMap());
+
+ {
+ SetForScope<bool> set(global_scope, false);
+ for(vector<RefPtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
+ (*i)->visit(*this);
+ func.body.visit(*this);
+ }
+
+ BlockVariableMap &block_variables = variables.back();
+ for(BlockVariableMap::iterator i=block_variables.begin(); i!=block_variables.end(); ++i)
+ i->second.conditionally_assigned = true;
+ for(vector<RefPtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
+ block_variables[i->get()].referenced = true;
+ merge_down_variables();
+}
+
+void ProgramCompiler::UnusedVariableLocator::merge_down_variables()
+{
+ BlockVariableMap &parent_variables = variables[variables.size()-2];
+ BlockVariableMap &block_variables = variables.back();
+ for(BlockVariableMap::iterator i=block_variables.begin(); i!=block_variables.end(); ++i)
+ {
+ if(i->second.local)
+ {
+ if(!i->second.referenced)
+ unused_nodes.insert(i->first);
+ clear_assignments(i->second, true);
+ continue;
+ }
+
+ BlockVariableMap::iterator j = parent_variables.find(i->first);
+ if(j==parent_variables.end())
+ parent_variables.insert(*i);
+ else
+ {
+ if(i->second.referenced || !i->second.conditionally_assigned)
+ clear_assignments(j->second, !i->second.referenced);
+ j->second.conditionally_assigned = i->second.conditionally_assigned;
+ j->second.referenced |= i->second.referenced;
+ j->second.assignments.insert(j->second.assignments.end(), i->second.assignments.begin(), i->second.assignments.end());
+ }
+ }
+ variables.pop_back();
+}
+
+void ProgramCompiler::UnusedVariableLocator::visit(Conditional &cond)
+{
+ cond.condition->visit(*this);
+ variables.push_back(BlockVariableMap());
+ cond.body.visit(*this);
+
+ BlockVariableMap if_variables;
+ swap(variables.back(), if_variables);
+ cond.else_body.visit(*this);
+
+ BlockVariableMap &else_variables = variables.back();
+ for(BlockVariableMap::iterator i=else_variables.begin(); i!=else_variables.end(); ++i)
+ {
+ BlockVariableMap::iterator j = if_variables.find(i->first);
+ if(j!=if_variables.end())
+ {
+ i->second.assignments.insert(i->second.assignments.end(), j->second.assignments.begin(), j->second.assignments.end());
+ i->second.conditionally_assigned |= j->second.conditionally_assigned;
+ if_variables.erase(j);
+ }
+ else
+ i->second.conditionally_assigned = true;
+ }
+
+ for(BlockVariableMap::iterator i=if_variables.begin(); i!=if_variables.end(); ++i)
+ {
+ i->second.conditionally_assigned = true;
+ else_variables.insert(*i);
+ }
+
+ merge_down_variables();
+}
+
+void ProgramCompiler::UnusedVariableLocator::visit(Iteration &iter)
+{
+ variables.push_back(BlockVariableMap());
+ TraversingVisitor::visit(iter);
+
+ BlockVariableMap &block_variables = variables.back();
+ for(BlockVariableMap::iterator i=block_variables.begin(); i!=block_variables.end(); ++i)
+ if(!i->second.local && i->second.referenced)
+ i->second.assignments.clear();
+
+ merge_down_variables();
+}
+
+
+ProgramCompiler::UnusedVariableLocator::VariableInfo::VariableInfo():
+ local(false),
+ conditionally_assigned(false),
+ referenced(false)
+{ }
+
+
+void ProgramCompiler::UnusedFunctionLocator::visit(FunctionCall &call)
+{
+ TraversingVisitor::visit(call);
+
+ unused_nodes.erase(call.declaration);
+ if(call.declaration && call.declaration->definition!=call.declaration)
+ used_definitions.insert(call.declaration->definition);
+}
+
+void ProgramCompiler::UnusedFunctionLocator::visit(FunctionDeclaration &func)
+{
+ TraversingVisitor::visit(func);
+
+ if((func.name!="main" || func.body.body.empty()) && !used_definitions.count(&func))
+ unused_nodes.insert(&func);
+}
+
+
+ProgramCompiler::NodeRemover::NodeRemover(const set<Node *> &r):
+ to_remove(r)
+{ }
void ProgramCompiler::NodeRemover::visit(Block &block)
{
- for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
+ for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
{
(*i)->visit(*this);
- if(to_remove.count(&**i))
+ if(to_remove.count(i->get()))
block.body.erase(i++);
else
++i;
{
stage->in_variables.erase(var.name);
stage->out_variables.erase(var.name);
+ stage->locations.erase(var.name);
if(var.linked_declaration)
var.linked_declaration->linked_declaration = 0;
}
- else if(var.init_expression && to_remove.count(&*var.init_expression))
+ else if(var.init_expression && to_remove.count(var.init_expression.get()))
var.init_expression = 0;
}
+
+void ProgramCompiler::PrecisionRemover::visit(Precision &)
+{
+ remove_node = true;
+}
+
+void ProgramCompiler::PrecisionRemover::visit(VariableDeclaration &var)
+{
+ var.precision.clear();
+}
+
+
+ProgramCompiler::DefaultPrecisionGenerator::DefaultPrecisionGenerator():
+ toplevel(true)
+{ }
+
+void ProgramCompiler::DefaultPrecisionGenerator::visit(Block &block)
+{
+ if(toplevel)
+ {
+ SetForScope<bool> set(toplevel, false);
+ BlockModifier::visit(block);
+ }
+ else
+ Visitor::visit(block);
+}
+
+void ProgramCompiler::DefaultPrecisionGenerator::visit(Precision &prec)
+{
+ have_default.insert(prec.type);
+}
+
+void ProgramCompiler::DefaultPrecisionGenerator::visit(VariableDeclaration &var)
+{
+ if(var.type_declaration)
+ return;
+
+ string type = var.type;
+ if(!type.compare(0, 3, "vec") || !type.compare(0, 3, "mat"))
+ type = "float";
+ else if(!type.compare(0, 3, "ivec") || type=="uint")
+ type = "int";
+
+ if(!have_default.count(type))
+ {
+ Precision *prec = new Precision;
+ if(!type.compare(0, 7, "sampler"))
+ prec->precision = "lowp";
+ else if(stage->type==FRAGMENT)
+ prec->precision = "mediump";
+ else
+ prec->precision = "highp";
+ prec->type = type;
+ insert_nodes.push_back(prec);
+
+ have_default.insert(type);
+ }
+}
+
+
+ProgramCompiler::LegacyConverter::LegacyConverter():
+ target_api(get_gl_api()),
+ target_version(get_glsl_version()),
+ frag_out(0)
+{ }
+
+ProgramCompiler::LegacyConverter::LegacyConverter(const Version &v):
+ target_api(get_gl_api()),
+ target_version(v),
+ frag_out(0)
+{ }
+
+bool ProgramCompiler::LegacyConverter::check_version(const Version &feature_version) const
+{
+ if(target_version<feature_version)
+ return false;
+ else if(stage->required_version<feature_version)
+ stage->required_version = feature_version;
+
+ return true;
+}
+
+bool ProgramCompiler::LegacyConverter::supports_unified_interface_syntax() const
+{
+ if(target_api==OPENGL_ES2)
+ return check_version(Version(3, 0));
+ else
+ return check_version(Version(1, 30));
+}
+
+void ProgramCompiler::LegacyConverter::visit(VariableReference &var)
+{
+ if(var.declaration==frag_out && !supports_unified_interface_syntax())
+ {
+ var.name = "gl_FragColor";
+ var.declaration = 0;
+ type = "vec4";
+ }
+ else if(var.declaration)
+ type = var.declaration->type;
+ else
+ type = string();
+}
+
+void ProgramCompiler::LegacyConverter::visit(Assignment &assign)
+{
+ TraversingVisitor::visit(assign);
+ if(assign.target_declaration==frag_out && !supports_unified_interface_syntax())
+ assign.target_declaration = 0;
+}
+
+bool ProgramCompiler::LegacyConverter::supports_unified_sampling_functions() const
+{
+ if(target_api==OPENGL_ES2)
+ return check_version(Version(3, 0));
+ else
+ return check_version(Version(1, 30));
+}
+
+void ProgramCompiler::LegacyConverter::visit(FunctionCall &call)
+{
+ if(call.name=="texture" && !call.declaration && !supports_unified_sampling_functions())
+ {
+ vector<RefPtr<Expression> >::iterator i = call.arguments.begin();
+ if(i!=call.arguments.end())
+ {
+ (*i)->visit(*this);
+ if(type=="sampler1D")
+ call.name = "texture1D";
+ else if(type=="sampler2D")
+ call.name = "texture2D";
+ else if(type=="sampler3D")
+ call.name = "texture3D";
+ else if(type=="sampler1DShadow")
+ call.name = "shadow1D";
+ else if(type=="sampler2DShadow")
+ call.name = "shadow2D";
+
+ for(; i!=call.arguments.end(); ++i)
+ (*i)->visit(*this);
+ }
+ }
+ else
+ TraversingVisitor::visit(call);
+}
+
+bool ProgramCompiler::LegacyConverter::supports_interface_layouts() const
+{
+ if(target_api==OPENGL_ES2)
+ return check_version(Version(3, 0));
+ else
+ return check_version(Version(3, 30));
+}
+
+void ProgramCompiler::LegacyConverter::visit(VariableDeclaration &var)
+{
+ if(var.layout && !supports_interface_layouts())
+ {
+ vector<Layout::Qualifier>::iterator i;
+ for(i=var.layout->qualifiers.begin(); (i!=var.layout->qualifiers.end() && i->identifier!="location"); ++i) ;
+ if(i!=var.layout->qualifiers.end())
+ {
+ unsigned location = lexical_cast<unsigned>(i->value);
+ if(stage->type==VERTEX && var.interface=="in")
+ {
+ stage->locations[var.name] = location;
+ var.layout->qualifiers.erase(i);
+ }
+ else if(stage->type==FRAGMENT && var.interface=="out")
+ {
+ if(location!=0)
+ static Require _req(EXT_gpu_shader4);
+ stage->locations[var.name] = location;
+ var.layout->qualifiers.erase(i);
+ }
+
+ if(var.layout->qualifiers.empty())
+ var.layout = 0;
+ }
+ }
+
+ if((var.interface=="in" || var.interface=="out") && !supports_unified_interface_syntax())
+ {
+ if(stage->type==FRAGMENT && var.interface=="out")
+ {
+ frag_out = &var;
+ remove_node = true;
+ }
+ }
+
+ TraversingVisitor::visit(var);
+}
+
+bool ProgramCompiler::LegacyConverter::supports_interface_blocks(const string &iface) const
+{
+ if(target_api==OPENGL_ES2)
+ {
+ if(iface=="uniform")
+ return check_version(Version(3, 0));
+ else
+ return check_version(Version(3, 20));
+ }
+ else
+ return check_version(Version(1, 50));
+}
+
+void ProgramCompiler::LegacyConverter::visit(InterfaceBlock &iface)
+{
+ if(!supports_interface_blocks(iface.interface))
+ flatten_block(iface.members);
+}
+
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff