+++ /dev/null
-#include <msp/core/raii.h>
-#include <msp/strings/format.h>
-#include <msp/strings/utils.h>
-#include "error.h"
-#include "program.h"
-#include "programcompiler.h"
-#include "shader.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-using namespace ProgramSyntax;
-
-ProgramCompiler::ProgramCompiler():
- module(0)
-{ }
-
-void ProgramCompiler::compile(const string &source)
-{
- module = &parser.parse(source);
- process();
-}
-
-void ProgramCompiler::compile(IO::Base &io)
-{
- module = &parser.parse(io);
- process();
-}
-
-void ProgramCompiler::add_shaders(Program &program)
-{
- if(!module)
- throw invalid_operation("ProgramCompiler::add_shaders");
-
- string head = "#version 150\n";
- if(module->vertex_context.present)
- program.attach_shader_owned(new VertexShader(head+format_context(module->vertex_context)));
- if(module->geometry_context.present)
- program.attach_shader_owned(new GeometryShader(head+format_context(module->geometry_context)));
- if(module->fragment_context.present)
- program.attach_shader_owned(new FragmentShader(head+format_context(module->fragment_context)));
-
- program.bind_attribute(VERTEX4, "vertex");
- program.bind_attribute(NORMAL3, "normal");
- program.bind_attribute(COLOR4_FLOAT, "color");
- program.bind_attribute(TEXCOORD4, "texcoord");
-}
-
-void ProgramCompiler::process()
-{
- if(module->vertex_context.present)
- process(module->vertex_context);
- if(module->geometry_context.present)
- process(module->geometry_context);
- if(module->fragment_context.present)
- process(module->fragment_context);
-}
-
-void ProgramCompiler::process(Context &context)
-{
- inject_block(context.content, module->global_context.content);
-
- VariableResolver resolver;
- context.content.visit(resolver);
-
- while(1)
- {
- UnusedVariableLocator unused_locator;
- context.content.visit(unused_locator);
-
- NodeRemover remover;
- remover.to_remove.insert(unused_locator.unused_variables.begin(), unused_locator.unused_variables.end());
- context.content.visit(remover);
-
- if(!remover.n_removed)
- break;
- }
-}
-
-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)
- target.body.insert(insert_point, (*i)->clone());
-}
-
-string ProgramCompiler::format_context(Context &context)
-{
- Formatter formatter;
- context.content.visit(formatter);
- return formatter.formatted;
-}
-
-
-ProgramCompiler::Formatter::Formatter():
- indent(0),
- parameter_list(false),
- else_if(false)
-{ }
-
-void ProgramCompiler::Formatter::visit(Literal &literal)
-{
- formatted += literal.token;
-}
-
-void ProgramCompiler::Formatter::visit(ParenthesizedExpression &parexpr)
-{
- formatted += '(';
- parexpr.expression->visit(*this);
- formatted += ')';
-}
-
-void ProgramCompiler::Formatter::visit(VariableReference &var)
-{
- formatted += var.name;
-}
-
-void ProgramCompiler::Formatter::visit(MemberAccess &memacc)
-{
- memacc.left->visit(*this);
- formatted += format(".%s", memacc.member);
-}
-
-void ProgramCompiler::Formatter::visit(UnaryExpression &unary)
-{
- if(unary.prefix)
- formatted += unary.oper;
- unary.expression->visit(*this);
- if(!unary.prefix)
- formatted += unary.oper;
-}
-
-void ProgramCompiler::Formatter::visit(BinaryExpression &binary)
-{
- binary.left->visit(*this);
- if(binary.assignment)
- formatted += format(" %s ", binary.oper);
- else
- formatted += binary.oper;
- binary.right->visit(*this);
- formatted += binary.after;
-}
-
-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)
- {
- if(i!=call.arguments.begin())
- formatted += ", ";
- (*i)->visit(*this);
- }
- formatted += ')';
-}
-
-void ProgramCompiler::Formatter::visit(ExpressionStatement &expr)
-{
- expr.expression->visit(*this);
- 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, ' '));
- }
-
- bool change_indent = (!formatted.empty() && !else_if);
- indent += change_indent;
- string spaces(indent*2, ' ');
- for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
- {
- if(i!=block.body.begin())
- formatted += '\n';
- if(!else_if)
- formatted += spaces;
- (*i)->visit(*this);
- }
- indent -= change_indent;
-
- if(block.use_braces)
- formatted += format("\n%s}", string(indent*2, ' '));
-}
-
-void ProgramCompiler::Formatter::visit(Layout &layout)
-{
- formatted += "layout(";
- for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
- {
- if(i!=layout.qualifiers.begin())
- formatted += ", ";
- formatted += i->identifier;
- if(!i->value.empty())
- formatted += format("=%s", i->value);
- }
- formatted += format(") %s;", layout.interface);
-}
-
-void ProgramCompiler::Formatter::visit(StructDeclaration &strct)
-{
- formatted += format("struct %s\n", strct.name);
- strct.members.visit(*this);
- formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(VariableDeclaration &var)
-{
- if(var.constant)
- formatted += "const ";
- if(!var.sampling.empty())
- formatted += format("%s ", var.sampling);
- if(!var.interface.empty())
- formatted += format("%s ", var.interface);
- formatted += format("%s %s", var.type, var.name);
- if(var.array)
- {
- formatted += '[';
- if(var.array_size)
- var.array_size->visit(*this);
- formatted += ']';
- }
- if(var.init_expression)
- {
- formatted += " = ";
- var.init_expression->visit(*this);
- }
- if(!parameter_list)
- formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(InterfaceBlock &iface)
-{
- formatted += format("%s %s\n", iface.interface, iface.name);
- iface.members.visit(*this);
- formatted += ';';
-}
-
-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)
- {
- if(i!=func.parameters.begin())
- formatted += ", ";
- SetFlag set(parameter_list);
- (*i)->visit(*this);
- }
- formatted += ')';
- if(func.definition)
- {
- formatted += '\n';
- func.body.visit(*this);
- }
- else
- formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(Conditional &cond)
-{
- if(else_if)
- {
- formatted += ' ';
- else_if = false;
- }
-
- formatted += "if(";
- cond.condition->visit(*this);
- formatted += ")\n";
-
- cond.body.visit(*this);
- if(!cond.else_body.body.empty())
- {
- formatted += format("\n%selse", string(indent*2, ' '));
- SetFlag set(else_if);
- cond.else_body.visit(*this);
- }
-}
-
-void ProgramCompiler::Formatter::visit(Iteration &iter)
-{
- formatted += "for(";
- iter.init_statement->visit(*this);
- formatted += ' ';
- iter.condition->visit(*this);
- formatted += "; ";
- iter.loop_expression->visit(*this);
- formatted += ")\n";
- iter.body.visit(*this);
-}
-
-void ProgramCompiler::Formatter::visit(Return &ret)
-{
- formatted += "return ";
- ret.expression->visit(*this);
- formatted += ';';
-}
-
-
-ProgramCompiler::VariableResolver::VariableResolver():
- anonymous(false)
-{ }
-
-void ProgramCompiler::VariableResolver::visit(Block &block)
-{
- blocks.push_back(&block);
- block.variables.clear();
- TraversingVisitor::visit(block);
- blocks.pop_back();
-}
-
-void ProgramCompiler::VariableResolver::visit(VariableReference &var)
-{
- var.declaration = 0;
- type = 0;
- for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
- {
- --i;
- map<string, VariableDeclaration *>::iterator j = (*i)->variables.find(var.name);
- if(j!=(*i)->variables.end())
- {
- var.declaration = j->second;
- type = j->second->type_declaration;
- break;
- }
- }
-}
-
-void ProgramCompiler::VariableResolver::visit(MemberAccess &memacc)
-{
- type = 0;
- TraversingVisitor::visit(memacc);
- memacc.declaration = 0;
- if(type)
- {
- map<string, VariableDeclaration *>::iterator i = type->members.variables.find(memacc.member);
- if(i!=type->members.variables.end())
- {
- memacc.declaration = i->second;
- type = i->second->type_declaration;
- }
- else
- type = 0;
- }
-}
-
-void ProgramCompiler::VariableResolver::visit(BinaryExpression &binary)
-{
- if(binary.oper=="[")
- {
- binary.right->visit(*this);
- type = 0;
- binary.left->visit(*this);
- }
- else
- {
- TraversingVisitor::visit(binary);
- type = 0;
- }
-}
-
-void ProgramCompiler::VariableResolver::visit(StructDeclaration &strct)
-{
- TraversingVisitor::visit(strct);
- blocks.back()->types[strct.name] = &strct;
-}
-
-void ProgramCompiler::VariableResolver::visit(VariableDeclaration &var)
-{
- for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
- {
- --i;
- map<string, StructDeclaration *>::iterator j = (*i)->types.find(var.type);
- if(j!=(*i)->types.end())
- var.type_declaration = j->second;
- }
-
- TraversingVisitor::visit(var);
- blocks.back()->variables[var.name] = &var;
- if(anonymous && blocks.size()>1)
- blocks[blocks.size()-2]->variables[var.name] = &var;
-}
-
-void ProgramCompiler::VariableResolver::visit(InterfaceBlock &iface)
-{
- SetFlag set(anonymous);
- TraversingVisitor::visit(iface);
-}
-
-
-void ProgramCompiler::UnusedVariableLocator::visit(VariableReference &var)
-{
- unused_variables.erase(var.declaration);
-}
-
-void ProgramCompiler::UnusedVariableLocator::visit(MemberAccess &memacc)
-{
- TraversingVisitor::visit(memacc);
- unused_variables.erase(memacc.declaration);
-}
-
-void ProgramCompiler::UnusedVariableLocator::visit(VariableDeclaration &var)
-{
- unused_variables.insert(&var);
- TraversingVisitor::visit(var);
-}
-
-
-ProgramCompiler::NodeRemover::NodeRemover():
- n_removed(0),
- immutable_block(false),
- remove_block(false)
-{ }
-
-void ProgramCompiler::NodeRemover::visit(Block &block)
-{
- remove_block = immutable_block;
- for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
- {
- bool remove = false;
- if(to_remove.count(&**i))
- remove = !immutable_block;
- else
- {
- remove_block = false;
- (*i)->visit(*this);
- remove = remove_block;
- }
-
- if(remove)
- block.body.erase(i++);
- else
- ++i;
-
- n_removed += remove;
- }
-}
-
-void ProgramCompiler::NodeRemover::visit(StructDeclaration &strct)
-{
- SetFlag set(immutable_block);
- TraversingVisitor::visit(strct);
-}
-
-void ProgramCompiler::NodeRemover::visit(InterfaceBlock &iface)
-{
- SetFlag set(immutable_block);
- TraversingVisitor::visit(iface);
-}
-
-} // namespace GL
-} // namespace Msp
projects / libs / gl.git / blobdiff