#include "error.h"
#include "program.h"
#include "programcompiler.h"
+#include "resources.h"
#include "shader.h"
using namespace std;
using namespace ProgramSyntax;
ProgramCompiler::ProgramCompiler():
+ resources(0),
module(0)
{ }
void ProgramCompiler::compile(const string &source)
{
+ resources = 0;
module = &parser.parse(source);
process();
}
-void ProgramCompiler::compile(IO::Base &io)
+void ProgramCompiler::compile(IO::Base &io, Resources *res)
{
+ resources = res;
module = &parser.parse(io);
process();
}
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)));
+ 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()
void ProgramCompiler::process()
{
+ list<Import *> imports = apply<NodeGatherer<Import> >(module->shared);
+ for(list<Import *>::iterator i=imports.end(); i!=imports.begin(); )
+ import((*--i)->module);
+ apply<NodeRemover>(module->shared, set<Node *>(imports.begin(), imports.end()));
+
for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
generate(*i);
for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); )
}
}
+void ProgramCompiler::import(const string &name)
+{
+ string fn = name+".glsl";
+ 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;
+ Module &imported_module = import_parser.parse(*io);
+
+ inject_block(module->shared.content, imported_module.shared.content);
+ apply<DeclarationCombiner>(module->shared);
+ for(list<Stage>::iterator i=imported_module.stages.begin(); i!=imported_module.stages.end(); ++i)
+ {
+ list<Stage>::iterator j;
+ for(j=module->stages.begin(); (j!=module->stages.end() && j->type<i->type); ++j) ;
+ if(j==module->stages.end() || j->type>i->type)
+ {
+ j = module->stages.insert(j, *i);
+ list<Stage>::iterator k = j;
+ if(++k!=module->stages.end())
+ k->previous = &*j;
+ if(j!=module->stages.begin())
+ j->previous = &*--(k=j);
+ }
+ else
+ {
+ inject_block(j->content, i->content);
+ apply<DeclarationCombiner>(*j);
+ }
+ }
+}
+
void ProgramCompiler::generate(Stage &stage)
{
inject_block(stage.content, module->shared.content);
+ apply<FunctionResolver>(stage);
apply<VariableResolver>(stage);
apply<InterfaceGenerator>(stage);
apply<VariableResolver>(stage);
apply<VariableRenamer>(stage);
+ apply<LegacyConverter>(stage);
+ apply<VariableResolver>(stage);
}
bool ProgramCompiler::optimize(Stage &stage)
{
- UnusedVariableLocator unused_locator;
- unused_locator.apply(stage);
+ apply<ConstantConditionEliminator>(stage);
+ apply<VariableResolver>(stage);
- NodeRemover remover;
- remover.to_remove = unused_locator.unused_nodes;
- remover.apply(stage);
+ set<Node *> unused = apply<UnusedVariableLocator>(stage);
+ set<Node *> unused2 = apply<UnusedFunctionLocator>(stage);
+ unused.insert(unused2.begin(), unused2.end());
+ apply<NodeRemover>(stage, unused);
- return !unused_locator.unused_nodes.empty();
+ return !unused.empty();
}
void ProgramCompiler::inject_block(Block &target, const Block &source)
}
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();
}
else_if(0)
{ }
+void ProgramCompiler::Formatter::apply(ProgramSyntax::Stage &s)
+{
+ const Version &ver = s.required_version;
+ if(ver.major)
+ formatted += format("#version %d%d\n", ver.major, ver.minor);
+ Visitor::apply(s);
+}
+
void ProgramCompiler::Formatter::visit(Literal &literal)
{
formatted += literal.token;
if(use_braces)
formatted += format("%s{\n", string(brace_indent*2, ' '));
- SetForScope<unsigned> set(indent, indent+!formatted.empty());
+ 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)
{
formatted += format("\n%s}", string(brace_indent*2, ' '));
}
+void ProgramCompiler::Formatter::visit(Import &import)
+{
+ formatted += format("import %s;", import.module);
+}
+
void ProgramCompiler::Formatter::visit(Layout &layout)
{
formatted += "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())
(*i)->visit(*this);
}
formatted += ')';
- if(func.definition)
+ if(func.definition==&func)
{
formatted += '\n';
func.body.visit(*this);
}
+ProgramCompiler::DeclarationCombiner::DeclarationCombiner():
+ toplevel(true),
+ remove_node(false)
+{ }
+
+void ProgramCompiler::DeclarationCombiner::visit(Block &block)
+{
+ if(!toplevel)
+ return;
+
+ SetForScope<bool> set(toplevel, false);
+ for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
+ {
+ remove_node = false;
+ (*i)->visit(*this);
+ if(remove_node)
+ block.body.erase(i++);
+ else
+ ++i;
+ }
+}
+
+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),
record_target(false),
}
-ProgramCompiler::InterfaceGenerator::InterfaceGenerator():
- scope_level(0),
+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::BlockModifier::BlockModifier():
remove_node(false)
{ }
+void ProgramCompiler::BlockModifier::flatten_block(Block &block)
+{
+ for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
+ insert_nodes.push_back((*i)->clone());
+ remove_node = true;
+}
+
+void ProgramCompiler::BlockModifier::apply_and_increment(Block &block, list<NodePtr<Node> >::iterator &i)
+{
+ 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;
+}
+
+void ProgramCompiler::BlockModifier::visit(Block &block)
+{
+ for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
+ {
+ (*i)->visit(*this);
+ apply_and_increment(block, i);
+ }
+}
+
+
+ProgramCompiler::InterfaceGenerator::InterfaceGenerator():
+ scope_level(0)
+{ }
+
string ProgramCompiler::InterfaceGenerator::get_out_prefix(StageType type)
{
if(type==VERTEX)
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);
}
}
}
+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(VariableReference &var)
+{
+ if(!var.declaration)
+ return;
+
+ if(variable_values)
+ {
+ 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;
+}
+
+
+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;
+}
+
+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)
+ {
+ remove_node = true;
+ return;
+ }
+ }
+
+ TraversingVisitor::visit(iter);
+}
+
+
ProgramCompiler::UnusedVariableLocator::UnusedVariableLocator():
aggregate(0),
assignment(0),
}
+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" && !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(); )
{
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;
}
var.init_expression = 0;
}
+
+ProgramCompiler::LegacyConverter::LegacyConverter():
+ target_version(get_glsl_version())
+{ }
+
+ProgramCompiler::LegacyConverter::LegacyConverter(const Version &v):
+ target_version(v)
+{ }
+
+bool ProgramCompiler::LegacyConverter::check_version(const Version &feature_version)
+{
+ if(target_version<feature_version)
+ return false;
+ else if(stage->required_version<feature_version)
+ stage->required_version = feature_version;
+
+ return true;
+}
+
+void ProgramCompiler::LegacyConverter::visit(VariableReference &var)
+{
+ if(var.name==frag_out_name && !check_version(Version(1, 30)))
+ {
+ var.name = "gl_FragColor";
+ var.declaration = 0;
+ type = "vec4";
+ }
+ else if(var.declaration)
+ type = var.declaration->type;
+ else
+ type = string();
+}
+
+void ProgramCompiler::LegacyConverter::visit(FunctionCall &call)
+{
+ if(call.name=="texture" && !call.declaration && !check_version(Version(1, 30)))
+ {
+ vector<NodePtr<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);
+}
+
+void ProgramCompiler::LegacyConverter::visit(VariableDeclaration &var)
+{
+ if(var.layout && !check_version(Version(3, 30)))
+ {
+ 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")
+ {
+ 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") && !check_version(Version(1, 30)))
+ {
+ if(stage->type==VERTEX && var.interface=="in")
+ var.interface = "attribute";
+ else if((stage->type==VERTEX && var.interface=="out") || (stage->type==FRAGMENT && var.interface=="in"))
+ var.interface = "varying";
+ else if(stage->type==FRAGMENT && var.interface=="out")
+ {
+ frag_out_name = var.name;
+ remove_node = true;
+ }
+ }
+
+ TraversingVisitor::visit(var);
+}
+
+void ProgramCompiler::LegacyConverter::visit(InterfaceBlock &iface)
+{
+ if(!check_version(Version(1, 50)))
+ flatten_block(iface.members);
+}
+
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff