#include <msp/core/algorithm.h>
-#include <msp/core/raii.h>
-#include <msp/gl/extensions/arb_explicit_attrib_location.h>
-#include <msp/gl/extensions/arb_gpu_shader5.h>
-#include <msp/gl/extensions/arb_uniform_buffer_object.h>
-#include <msp/gl/extensions/ext_gpu_shader4.h>
-#include <msp/gl/extensions/ext_texture_array.h>
#include <msp/strings/format.h>
-#include <msp/strings/regex.h>
#include <msp/strings/utils.h>
-#include "error.h"
+#include "builtin.h"
#include "compiler.h"
-#include "shader.h"
+#include "debug.h"
+#include "deviceinfo.h"
+#include "error.h"
+#include "finalize.h"
+#include "generate.h"
+#include "glsl_error.h"
+#include "modulecache.h"
+#include "optimize.h"
+#include "output.h"
+#include "resolve.h"
+#include "spirv.h"
+#include "validate.h"
#undef interface
using namespace std;
-namespace {
-
-const char builtins_src[] =
- "#pragma MSP stage(vertex)\n"
- "out gl_PerVertex {\n"
- " vec4 gl_Position;\n"
- " float gl_ClipDistance[];\n"
- "};\n"
- "#pragma MSP stage(geometry)\n"
- "in gl_PerVertex {\n"
- " vec4 gl_Position;\n"
- " float gl_ClipDistance[];\n"
- "} gl_in[];\n"
- "out gl_PerVertex {\n"
- " vec4 gl_Position;\n"
- " float gl_ClipDistance[];\n"
- "};\n";
-
-}
-
namespace Msp {
namespace GL {
namespace SL {
Compiler::Compiler():
- resources(0),
- module(0)
+ features(DeviceInfo::get_global().glsl_features)
+{ }
+
+Compiler::Compiler(const Features &f):
+ features(f)
{ }
Compiler::~Compiler()
delete module;
}
-void Compiler::compile(const string &source, const string &src_name)
+void Compiler::clear()
{
- resources = 0;
delete module;
module = new Module();
- Parser parser;
- imported_names.push_back(src_name);
- append_module(parser.parse(source, src_name, 1));
- process();
+ imported_names.clear();
+ module->source_map.set_name(0, "<generated>");
}
-void Compiler::compile(IO::Base &io, Resources *res, const string &src_name)
+void Compiler::set_source(const string &source, const string &src_name)
{
- resources = res;
- delete module;
- module = new Module();
- Parser parser;
+ clear();
imported_names.push_back(src_name);
- append_module(parser.parse(io, src_name, 1));
- process();
+ ModuleCache mod_cache(0);
+ append_module(mod_cache.add_module(source, src_name), mod_cache);
}
-void Compiler::compile(IO::Base &io, const string &src_name)
+void Compiler::load_source(IO::Base &io, DataFile::Collection *res, const string &src_name)
{
- compile(io, 0, src_name);
+ clear();
+ imported_names.push_back(src_name);
+ ModuleCache mod_cache(res);
+ append_module(mod_cache.add_module(io, src_name), mod_cache);
}
-void Compiler::add_shaders(Program &program)
+void Compiler::load_source(IO::Base &io, const string &src_name)
{
- if(!module)
- throw invalid_operation("Compiler::add_shaders");
-
- try
- {
- for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
- {
- if(i->type==VERTEX)
- {
- 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(apply<Formatter>(*i)));
- else if(i->type==FRAGMENT)
- {
- 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);
- }
- }
- }
- }
- catch(const compile_error &e)
- {
- static const Regex r_message("^(([0-9]+)\\(([0-9]+)\\) :|ERROR: ([0-9]+):([0-9]+):) (.*)$");
- vector<string> lines = split(e.what(), '\n');
- string translated;
- for(vector<string>::const_iterator i=lines.begin(); i!=lines.end(); ++i)
- {
- RegMatch m = r_message.match(*i);
- if(m)
- {
- unsigned index = 0;
- unsigned line = 0;
- if(m[2])
- {
- index = lexical_cast<unsigned>(m[2].str);
- line = lexical_cast<unsigned>(m[3].str);
- }
- else if(m[4])
- {
- index = lexical_cast<unsigned>(m[4].str);
- line = lexical_cast<unsigned>(m[5].str);
- }
- const char *src = "<unknown>";
- if(index==0)
- src = "<generated>";
- else if(index-1<imported_names.size())
- src = imported_names[index-1].c_str();
- translated += format("%s:%d: %s", src, line, m[6].str);
- }
- else
- translated += *i;
- translated += '\n';
- }
-
- throw compile_error(translated);
- }
+ load_source(io, 0, src_name);
}
-Module *Compiler::create_builtins_module()
+void Compiler::specialize(const map<string, int> &sv)
{
- Parser parser;
- Module *module = new Module(parser.parse(builtins_src, "<builtin>"));
- for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
- {
- VariableResolver resolver;
- i->content.visit(resolver);
- for(map<string, VariableDeclaration *>::iterator j=i->content.variables.begin(); j!=i->content.variables.end(); ++j)
- j->second->linked_declaration = j->second;
- }
- return module;
+ specialized = true;
+ spec_values = sv;
}
-Module &Compiler::get_builtins_module()
+void Compiler::compile(Mode mode)
{
- static RefPtr<Module> builtins_module = create_builtins_module();
- return *builtins_module;
-}
+ if(specialized && mode!=PROGRAM)
+ throw invalid_operation("Compiler::compile");
-Stage *Compiler::get_builtins(StageType type)
-{
- Module &module = get_builtins_module();
- for(list<Stage>::iterator i=module.stages.begin(); i!=module.stages.end(); ++i)
- if(i->type==type)
- return &*i;
- return 0;
-}
+ for(Stage &s: module->stages)
+ generate(s);
+ ConstantIdAssigner().apply(*module, features);
-void Compiler::append_module(Module &mod)
-{
- vector<Import *> imports = apply<NodeGatherer<Import> >(mod.shared);
- for(vector<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
- import((*i)->module);
- apply<NodeRemover>(mod.shared, set<Node *>(imports.begin(), imports.end()));
+ for(Stage &s: module->stages)
+ validate(s);
+ GlobalInterfaceValidator().apply(*module);
- append_stage(mod.shared);
- for(list<Stage>::iterator i=mod.stages.begin(); i!=mod.stages.end(); ++i)
- append_stage(*i);
-}
+ bool valid = true;
+ for(Stage &s: module->stages)
+ if(!check_errors(s))
+ valid = false;
+ if(!valid)
+ throw invalid_shader_source(get_diagnostics());
-void Compiler::append_stage(Stage &stage)
-{
- Stage *target = 0;
- if(stage.type==SHARED)
- target = &module->shared;
- else
+ if(specialized)
{
- 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(Stage &s: module->stages)
+ ConstantSpecializer().apply(s, spec_values);
}
-
- if(stage.required_version>target->required_version)
- target->required_version = stage.required_version;
- for(NodeList<Statement>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
- target->content.body.push_back(*i);
- apply<DeclarationCombiner>(*target);
-}
-
-void Compiler::process()
-{
- 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(); )
+ for(auto i=module->stages.begin(); i!=module->stages.end(); )
{
- if(optimize(*i))
+ OptimizeResult result = optimize(*i);
+ if(result==REDO_PREVIOUS)
i = module->stages.begin();
- else
+ else if(result!=REDO_STAGE)
++i;
}
- for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
- finalize(*i);
-}
-
-void Compiler::import(const string &name)
-{
- string fn = name+".glsl";
- if(find(imported_names, fn)!=imported_names.end())
- return;
- imported_names.push_back(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));
- Parser import_parser;
- append_module(import_parser.parse(*io, fn, imported_names.size()));
-}
-
-void Compiler::generate(Stage &stage)
-{
- if(module->shared.required_version>stage.required_version)
- stage.required_version = module->shared.required_version;
- inject_block(stage.content, module->shared.content);
-
- apply<DeclarationReorderer>(stage);
- apply<FunctionResolver>(stage);
- apply<VariableResolver>(stage);
- apply<InterfaceGenerator>(stage);
- apply<VariableResolver>(stage);
- apply<DeclarationReorderer>(stage);
- apply<FunctionResolver>(stage);
- apply<LegacyConverter>(stage);
-}
-
-bool Compiler::optimize(Stage &stage)
-{
- apply<ConstantConditionEliminator>(stage);
-
- set<FunctionDeclaration *> inlineable = apply<InlineableFunctionLocator>(stage);
- apply<FunctionInliner>(stage, inlineable);
-
- 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 Compiler::finalize(Stage &stage)
-{
- if(get_gl_api()==OPENGL_ES2)
- apply<DefaultPrecisionGenerator>(stage);
- else
- apply<PrecisionRemover>(stage);
-}
-
-void Compiler::inject_block(Block &target, const Block &source)
-{
- NodeList<Statement>::iterator insert_point = target.body.begin();
- for(NodeList<Statement>::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
- target.body.insert(insert_point, (*i)->clone());
-}
-
-template<typename T>
-typename T::ResultType Compiler::apply(Stage &stage)
-{
- T visitor;
- visitor.apply(stage);
- return visitor.get_result();
-}
-
-template<typename T, typename A>
-typename T::ResultType Compiler::apply(Stage &stage, const A &arg)
-{
- T visitor(arg);
- visitor.apply(stage);
- return visitor.get_result();
-}
-
-
-Compiler::Visitor::Visitor():
- stage(0)
-{ }
-
-void Compiler::Visitor::apply(Stage &s)
-{
- SetForScope<Stage *> set(stage, &s);
- stage->content.visit(*this);
-}
-
-
-Compiler::BlockModifier::BlockModifier():
- remove_node(false)
-{ }
-
-void Compiler::BlockModifier::flatten_block(Block &block)
-{
- insert_nodes.insert(insert_nodes.end(), block.body.begin(), block.body.end());
- remove_node = true;
-}
-
-void Compiler::BlockModifier::apply_and_increment(Block &block, NodeList<Statement>::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 Compiler::BlockModifier::visit(Block &block)
-{
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); )
- {
- (*i)->visit(*this);
- apply_and_increment(block, i);
- }
-}
-
-
-Compiler::Formatter::Formatter():
- source_index(0),
- source_line(1),
- indent(0),
- parameter_list(false)
-{ }
-
-void Compiler::Formatter::apply(Stage &s)
-{
- GLApi api = get_gl_api();
- const Version &ver = s.required_version;
-
- if(ver)
- {
- append(format("#version %d%02d", ver.major, ver.minor));
- if(api==OPENGL_ES2 && ver>=Version(3, 0))
- append(" es");
- formatted += '\n';
- }
- for(vector<const Extension *>::const_iterator i=s.required_extensions.begin(); i!=s.required_extensions.end(); ++i)
- append(format("#extension %s: require\n", (*i)->get_name()));
- if(!s.required_extensions.empty())
- formatted += '\n';
+ LocationAllocator().apply(*module, features);
+ for(Stage &s: module->stages)
+ finalize(s, mode);
- Visitor::apply(s);
+ compiled = true;
}
-void Compiler::Formatter::append(const string &text)
+string Compiler::get_combined_glsl() const
{
- formatted += text;
- for(string::const_iterator i=text.begin(); i!=text.end(); ++i)
- if(*i=='\n')
- ++source_line;
-}
+ if(!compiled)
+ throw invalid_operation("Compiler::get_combined_glsl");
-void Compiler::Formatter::append(char c)
-{
- formatted += c;
- if(c=='\n')
- ++source_line;
-}
+ string glsl;
-void Compiler::Formatter::set_source(unsigned index, unsigned line)
-{
- if(index!=source_index || (index && line!=source_line))
+ unsigned source_count = module->source_map.get_count();
+ for(unsigned i=1; i<source_count; ++i)
+ glsl += format("#pragma MSP source(%d, \"%s\")\n", i, module->source_map.get_name(i));
+ for(Stage &s: module->stages)
{
- if(index==source_index && line==source_line+1)
- formatted += '\n';
- else
- {
- unsigned l = line;
- if(stage->required_version<Version(3, 30))
- --l;
- formatted += format("#line %d %d\n", l, index);
- }
+ glsl += format("#pragma MSP stage(%s)\n", Stage::get_stage_name(s.type));
+ glsl += Formatter().apply(s);
+ glsl += '\n';
}
- source_index = index;
- source_line = line;
-}
-
-void Compiler::Formatter::visit(Literal &literal)
-{
- append(literal.token);
-}
-
-void Compiler::Formatter::visit(ParenthesizedExpression &parexpr)
-{
- append('(');
- parexpr.expression->visit(*this);
- append(')');
-}
-
-void Compiler::Formatter::visit(VariableReference &var)
-{
- append(var.name);
-}
-void Compiler::Formatter::visit(MemberAccess &memacc)
-{
- memacc.left->visit(*this);
- append(format(".%s", memacc.member));
+ return glsl;
}
-void Compiler::Formatter::visit(UnaryExpression &unary)
+vector<Stage::Type> Compiler::get_stages() const
{
- if(unary.prefix)
- append(unary.oper);
- unary.expression->visit(*this);
- if(!unary.prefix)
- append(unary.oper);
+ vector<Stage::Type> stage_types;
+ stage_types.reserve(module->stages.size());
+ for(const Stage &s: module->stages)
+ stage_types.push_back(s.type);
+ return stage_types;
}
-void Compiler::Formatter::visit(BinaryExpression &binary)
+string Compiler::get_stage_glsl(Stage::Type stage_type) const
{
- binary.left->visit(*this);
- append(binary.oper);
- binary.right->visit(*this);
- append(binary.after);
+ if(!compiled)
+ throw invalid_operation("Compiler::get_stage_glsl");
+ auto i = find_member(module->stages, stage_type, &Stage::type);
+ if(i!=module->stages.end())
+ return Formatter().apply(*i);
+ throw key_error(Stage::get_stage_name(stage_type));
}
-void Compiler::Formatter::visit(Assignment &assign)
+vector<uint32_t> Compiler::get_combined_spirv() const
{
- assign.left->visit(*this);
- append(format(" %s ", assign.oper));
- assign.right->visit(*this);
+ if(!compiled)
+ throw invalid_operation("Compiler::get_combined_spirv");
+ SpirVGenerator gen;
+ gen.apply(*module);
+ return gen.get_code();
}
-void Compiler::Formatter::visit(FunctionCall &call)
+const map<string, unsigned> &Compiler::get_vertex_attributes() const
{
- append(format("%s(", call.name));
- for(NodeArray<Expression>::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
- {
- if(i!=call.arguments.begin())
- append(", ");
- (*i)->visit(*this);
- }
- append(')');
+ if(!compiled)
+ throw invalid_operation("Compiler::get_vertex_attributes");
+ auto i = find_member(module->stages, Stage::VERTEX, &Stage::type);
+ if(i!=module->stages.end())
+ return i->locations;
+ throw invalid_operation("Compiler::get_vertex_attributes");
}
-void Compiler::Formatter::visit(ExpressionStatement &expr)
+const map<string, unsigned> &Compiler::get_fragment_outputs() const
{
- expr.expression->visit(*this);
- append(';');
+ if(!compiled)
+ throw invalid_operation("Compiler::get_fragment_outputs");
+ auto i = find_member(module->stages, Stage::FRAGMENT, &Stage::type);
+ if(i!=module->stages.end())
+ return i->locations;
+ throw invalid_operation("Compiler::get_fragment_outputs");
}
-void Compiler::Formatter::visit(Block &block)
+const map<string, unsigned> &Compiler::get_texture_bindings() const
{
- unsigned brace_indent = indent;
- bool use_braces = (block.use_braces || (indent && block.body.size()!=1));
- if(use_braces)
- append(format("%s{\n", string(brace_indent*2, ' ')));
-
- SetForScope<unsigned> set(indent, indent+(indent>0 || use_braces));
- string spaces(indent*2, ' ');
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); ++i)
- {
- if(i!=block.body.begin())
- append('\n');
- set_source((*i)->source, (*i)->line);
- append(spaces);
- (*i)->visit(*this);
- }
-
- if(use_braces)
- append(format("\n%s}", string(brace_indent*2, ' ')));
+ if(!compiled)
+ throw invalid_operation("Compiler::get_texture_bindings");
+ return module->shared.texture_bindings;
}
-void Compiler::Formatter::visit(Import &import)
+const map<string, unsigned> &Compiler::get_uniform_block_bindings() const
{
- append(format("import %s;", import.module));
+ if(!compiled)
+ throw invalid_operation("Compiler::get_uniform_block_bindings");
+ return module->shared.uniform_block_bindings;
}
-void Compiler::Formatter::visit(Precision &prec)
+const SourceMap &Compiler::get_source_map() const
{
- append(format("precision %s %s;", prec.precision, prec.type));
+ return module->source_map;
}
-void Compiler::Formatter::visit(Layout &layout)
+string Compiler::get_stage_debug(Stage::Type stage_type) const
{
- append("layout(");
- for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
- {
- if(i!=layout.qualifiers.begin())
- append(", ");
- append(i->identifier);
- if(!i->value.empty())
- append(format("=%s", i->value));
- }
- append(')');
+ auto i = find_member(module->stages, stage_type, &Stage::type);
+ if(i!=module->stages.end())
+ return DumpTree().apply(*i);
+ throw key_error(Stage::get_stage_name(stage_type));
}
-void Compiler::Formatter::visit(InterfaceLayout &layout)
+string Compiler::get_diagnostics() const
{
- layout.layout.visit(*this);
- append(format(" %s;", layout.interface));
+ string combined;
+ for(const Stage &s: module->stages)
+ for(const Diagnostic &d: s.diagnostics)
+ if(d.source!=INTERNAL_SOURCE)
+ append(combined, "\n", format("%s:%d: %s", module->source_map.get_name(d.source), d.line, d.message));
+ return combined;
}
-void Compiler::Formatter::visit(StructDeclaration &strct)
+void Compiler::append_module(const Module &mod, ModuleCache &mod_cache)
{
- append(format("struct %s\n", strct.name));
- strct.members.visit(*this);
- append(';');
-}
+ module->source_map.merge_from(mod.source_map);
-void Compiler::Formatter::visit(VariableDeclaration &var)
-{
- if(var.layout)
- {
- var.layout->visit(*this);
- append(' ');
- }
- if(var.constant)
- append("const ");
- if(!var.interpolation.empty())
- append(format("%s ", var.interpolation));
- if(!var.sampling.empty())
- append(format("%s ", var.sampling));
- if(!var.interface.empty() && var.interface!=block_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";
- }
- append(format("%s ", interface));
- }
- if(!var.precision.empty())
- append(format("%s ", var.precision));
- append(format("%s %s", var.type, var.name));
- if(var.array)
- {
- append('[');
- if(var.array_size)
- var.array_size->visit(*this);
- append(']');
- }
- if(var.init_expression)
- {
- append(" = ");
- var.init_expression->visit(*this);
- }
- if(!parameter_list)
- append(';');
-}
+ vector<Import *> imports;
+ for(const RefPtr<Statement> &s: mod.shared.content.body)
+ if(Import *imp = dynamic_cast<Import *>(s.get()))
+ imports.push_back(imp);
+ for(Import *i: imports)
+ import(mod_cache, i->module);
-void Compiler::Formatter::visit(InterfaceBlock &iface)
-{
- SetForScope<string> set(block_interface, iface.interface);
- append(format("%s %s\n", iface.interface, iface.name));
- iface.members.visit(*this);
- append(';');
+ append_stage(mod.shared);
+ for(const Stage &s: mod.stages)
+ append_stage(s);
}
-void Compiler::Formatter::visit(FunctionDeclaration &func)
+void Compiler::append_stage(const Stage &stage)
{
- append(format("%s %s(", func.return_type, func.name));
- for(NodeArray<VariableDeclaration>::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
- {
- if(i!=func.parameters.begin())
- append(", ");
- SetFlag set(parameter_list);
- (*i)->visit(*this);
- }
- append(')');
- if(func.definition==&func)
- {
- append('\n');
- func.body.visit(*this);
- }
+ Stage *target = 0;
+ if(stage.type==Stage::SHARED)
+ target = &module->shared;
else
- append(';');
-}
-
-void Compiler::Formatter::visit(Conditional &cond)
-{
- append("if(");
- cond.condition->visit(*this);
- append(")\n");
-
- cond.body.visit(*this);
- if(!cond.else_body.body.empty())
{
- Conditional *else_cond = dynamic_cast<Conditional *>(cond.else_body.body.front().get());
- if(cond.else_body.body.size()==1 && else_cond)
- {
- append('\n');
- set_source(else_cond->source, else_cond->line);
- append(format("%selse ", string(indent*2, ' ')));
- else_cond->visit(*this);
- }
- else
+ auto i = find_if(module->stages, [&stage](const Stage &s){ return s.type>=stage.type; });
+ if(i==module->stages.end() || i->type>stage.type)
{
- append(format("\n%selse\n", string(indent*2, ' ')));
- cond.else_body.visit(*this);
+ auto 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;
}
- }
-}
-void Compiler::Formatter::visit(Iteration &iter)
-{
- if(!iter.init_statement && iter.condition && !iter.loop_expression)
- {
- append("while(");
- iter.condition->visit(*this);
- append(')');
- }
- else
- {
- append("for(");
- if(iter.init_statement)
- iter.init_statement->visit(*this);
- else
- append(';');
- if(iter.condition)
- {
- append(' ');
- iter.condition->visit(*this);
- }
- append(';');
- if(iter.loop_expression)
- {
- append(' ');
- iter.loop_expression->visit(*this);
- }
- append(')');
+ target = &*i;
}
- if(iter.body.body.empty())
- append(" { }");
- else
- {
- append('\n');
- iter.body.visit(*this);
- }
+ if(stage.required_features.glsl_version>target->required_features.glsl_version)
+ target->required_features.glsl_version = stage.required_features.glsl_version;
+ for(const RefPtr<Statement> &s: stage.content.body)
+ if(!dynamic_cast<Import *>(s.get()))
+ target->content.body.push_back(s);
}
-void Compiler::Formatter::visit(Return &ret)
+void Compiler::import(ModuleCache &mod_cache, const string &name)
{
- append("return");
- if(ret.expression)
- {
- append(' ');
- ret.expression->visit(*this);
- }
- append(';');
-}
+ if(find(imported_names, name)!=imported_names.end())
+ return;
+ imported_names.push_back(name);
-void Compiler::Formatter::visit(Jump &jump)
-{
- append(jump.keyword);
- append(';');
+ append_module(mod_cache.get_module(name), mod_cache);
}
+void Compiler::generate(Stage &stage)
+{
+ stage.required_features.target_api = features.target_api;
+ if(module->shared.required_features.glsl_version>stage.required_features.glsl_version)
+ stage.required_features.glsl_version = module->shared.required_features.glsl_version;
-Compiler::DeclarationCombiner::DeclarationCombiner():
- toplevel(true)
-{ }
+ inject_block(stage.content, module->shared.content);
+ if(const Stage *builtins = get_builtins(stage.type))
+ inject_block(stage.content, builtins->content);
+ if(const Stage *builtins = get_builtins(Stage::SHARED))
+ inject_block(stage.content, builtins->content);
-void Compiler::DeclarationCombiner::visit(Block &block)
-{
- if(!toplevel)
- return;
+ // Initial resolving pass
+ resolve(stage);
- SetForScope<bool> set(toplevel, false);
- BlockModifier::visit(block);
+ /* All variables local to a stage have been resolved. Resolve non-local
+ variables through interfaces. */
+ InterfaceGenerator().apply(stage);
+ resolve(stage, RESOLVE_BLOCKS|RESOLVE_TYPES|RESOLVE_VARIABLES);
}
-void Compiler::DeclarationCombiner::visit(FunctionDeclaration &func)
+template<typename T>
+bool Compiler::resolve(Stage &stage, unsigned &flags, unsigned bit)
{
- 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);
+ if(!(flags&bit))
+ return false;
+
+ flags &= ~bit;
+ return T().apply(stage);
}
-void Compiler::DeclarationCombiner::visit(VariableDeclaration &var)
+void Compiler::resolve(Stage &stage, unsigned flags)
{
- VariableDeclaration *&ptr = variables[var.name];
- if(ptr)
+ while(flags)
{
- ptr->type = var.type;
- if(var.init_expression)
- ptr->init_expression = var.init_expression;
- if(var.layout)
- {
- if(ptr->layout)
- {
- for(vector<Layout::Qualifier>::iterator i=var.layout->qualifiers.begin(); i!=var.layout->qualifiers.end(); ++i)
- {
- bool found = false;
- for(vector<Layout::Qualifier>::iterator j=ptr->layout->qualifiers.begin(); (!found && j!=ptr->layout->qualifiers.end()); ++j)
- if(j->identifier==i->identifier)
- {
- j->value = i->value;
- found = true;
- }
-
- if(!found)
- ptr->layout->qualifiers.push_back(*i);
- }
- }
- else
- ptr->layout = var.layout;
- }
- remove_node = true;
+ if(resolve<BlockHierarchyResolver>(stage, flags, RESOLVE_BLOCKS))
+ ;
+ else if(resolve<TypeResolver>(stage, flags, RESOLVE_TYPES))
+ flags |= RESOLVE_BLOCKS|RESOLVE_VARIABLES|RESOLVE_EXPRESSIONS;
+ else if(resolve<VariableResolver>(stage, flags, RESOLVE_VARIABLES))
+ flags |= RESOLVE_EXPRESSIONS;
+ else if(resolve<FunctionResolver>(stage, flags, RESOLVE_FUNCTIONS))
+ flags |= RESOLVE_EXPRESSIONS;
+ else if(resolve<ExpressionResolver>(stage, flags, RESOLVE_EXPRESSIONS))
+ flags |= RESOLVE_VARIABLES|RESOLVE_FUNCTIONS;
}
- else
- ptr = &var;
-}
-
-
-Compiler::VariableResolver::VariableResolver():
- anonymous(false),
- record_target(false),
- assignment_target(0),
- self_referencing(false)
-{ }
-
-void Compiler::VariableResolver::apply(Stage &s)
-{
- SetForScope<Stage *> set(stage, &s);
- Stage *builtins = get_builtins(stage->type);
- if(builtins)
- blocks.push_back(&builtins->content);
- stage->content.visit(*this);
- if(builtins)
- blocks.pop_back();
}
-void Compiler::VariableResolver::visit(Block &block)
+void Compiler::validate(Stage &stage)
{
- blocks.push_back(&block);
- block.variables.clear();
- TraversingVisitor::visit(block);
- blocks.pop_back();
+ DeclarationValidator().apply(stage);
+ IdentifierValidator().apply(stage);
+ ReferenceValidator().apply(stage);
+ ExpressionValidator().apply(stage);
+ FlowControlValidator().apply(stage);
+ StageInterfaceValidator().apply(stage);
}
-void Compiler::VariableResolver::visit(VariableReference &var)
+bool Compiler::check_errors(Stage &stage)
{
- 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;
- }
- }
-
- 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;
+ stable_sort(stage.diagnostics, &diagnostic_line_order);
+ return !any_of(stage.diagnostics.begin(), stage.diagnostics.end(),
+ [](const Diagnostic &d){ return d.severity==Diagnostic::ERR; });
}
-void Compiler::VariableResolver::visit(MemberAccess &memacc)
+bool Compiler::diagnostic_line_order(const Diagnostic &diag1, const Diagnostic &diag2)
{
- type = 0;
- TraversingVisitor::visit(memacc);
- memacc.declaration = 0;
- if(type)
+ if(diag1.provoking_source!=diag2.provoking_source)
{
- 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;
- }
+ // Sort builtins first and imported modules according to import order.
+ if(diag1.provoking_source<=BUILTIN_SOURCE)
+ return diag1.provoking_source<diag2.provoking_source;
+ else if(diag2.provoking_source<=BUILTIN_SOURCE)
+ return false;
else
- type = 0;
+ return diag1.provoking_source>diag2.provoking_source;
}
+ return diag1.provoking_line<diag2.provoking_line;
}
-void Compiler::VariableResolver::visit(BinaryExpression &binary)
+Compiler::OptimizeResult Compiler::optimize(Stage &stage)
{
- if(binary.oper=="[")
- {
- {
- SetForScope<bool> set(record_target, false);
- binary.right->visit(*this);
- }
- type = 0;
- binary.left->visit(*this);
- }
- else
- {
- TraversingVisitor::visit(binary);
- type = 0;
- }
-}
+ if(ConstantFolder().apply(stage))
+ resolve(stage, RESOLVE_EXPRESSIONS);
+ ConstantConditionEliminator().apply(stage);
-void Compiler::VariableResolver::visit(Assignment &assign)
-{
+ bool any_inlined = false;
+ if(FunctionInliner().apply(stage))
{
- SetFlag set(record_target);
- assignment_target = 0;
- assign.left->visit(*this);
+ resolve(stage, RESOLVE_TYPES|RESOLVE_VARIABLES|RESOLVE_FUNCTIONS|RESOLVE_EXPRESSIONS);
+ any_inlined = true;
}
-
- self_referencing = false;
- assign.right->visit(*this);
-
- assign.self_referencing = (self_referencing || assign.oper!="=");
- assign.target_declaration = assignment_target;
-}
-
-void Compiler::VariableResolver::visit(StructDeclaration &strct)
-{
- TraversingVisitor::visit(strct);
- blocks.back()->types[strct.name] = &strct;
-}
-
-void Compiler::VariableResolver::visit(VariableDeclaration &var)
-{
- for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
+ if(ExpressionInliner().apply(stage))
{
- --i;
- map<string, StructDeclaration *>::iterator j = (*i)->types.find(var.type);
- if(j!=(*i)->types.end())
- var.type_declaration = j->second;
+ resolve(stage, RESOLVE_VARIABLES|RESOLVE_FUNCTIONS|RESOLVE_EXPRESSIONS);
+ any_inlined = true;
}
- if(!block_interface.empty() && var.interface.empty())
- var.interface = block_interface;
-
- TraversingVisitor::visit(var);
- blocks.back()->variables[var.name] = &var;
- if(anonymous && blocks.size()>1)
- blocks[blocks.size()-2]->variables[var.name] = &var;
-}
-
-void Compiler::VariableResolver::visit(InterfaceBlock &iface)
-{
- SetFlag set(anonymous);
- SetForScope<string> set2(block_interface, iface.interface);
- TraversingVisitor::visit(iface);
-}
-
-
-void Compiler::FunctionResolver::visit(FunctionCall &call)
-{
- map<string, vector<FunctionDeclaration *> >::iterator i = functions.find(call.name);
- if(i!=functions.end())
- call.declaration = i->second.back();
+ /* Removing variables or functions may cause things from the previous stage
+ to become unused. */
+ bool any_removed = UnreachableCodeRemover().apply(stage);
+ any_removed |= UnusedVariableRemover().apply(stage);
+ any_removed |= UnusedFunctionRemover().apply(stage);
+ any_removed |= UnusedTypeRemover().apply(stage);
- TraversingVisitor::visit(call);
+ return any_removed ? REDO_PREVIOUS : any_inlined ? REDO_STAGE : NEXT_STAGE;
}
-void Compiler::FunctionResolver::visit(FunctionDeclaration &func)
+void Compiler::finalize(Stage &stage, Mode mode)
{
- vector<FunctionDeclaration *> &decls = functions[func.name];
- if(func.definition)
+ if(mode==PROGRAM)
{
- for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
- (*i)->definition = func.definition;
- decls.clear();
- decls.push_back(&func);
+ LegacyConverter().apply(stage, features);
+ resolve(stage, RESOLVE_VARIABLES|RESOLVE_FUNCTIONS);
+ PrecisionConverter().apply(stage);
}
- else if(!decls.empty() && decls.back()->definition)
- func.definition = decls.back()->definition;
- else
- decls.push_back(&func);
+ else if(mode==SPIRV)
+ StructOrganizer().apply(stage);
- TraversingVisitor::visit(func);
+ // Collect bindings from all stages into the shared stage's maps
+ module->shared.texture_bindings.insert(stage.texture_bindings.begin(), stage.texture_bindings.end());
+ module->shared.uniform_block_bindings.insert(stage.uniform_block_bindings.begin(), stage.uniform_block_bindings.end());
}
-
-Compiler::InterfaceGenerator::InterfaceGenerator():
- scope_level(0)
-{ }
-
-string Compiler::InterfaceGenerator::get_out_prefix(StageType type)
-{
- if(type==VERTEX)
- return "_vs_out_";
- else if(type==GEOMETRY)
- return "_gs_out_";
- else
- return string();
-}
-
-void Compiler::InterfaceGenerator::apply(Stage &s)
-{
- SetForScope<Stage *> set(stage, &s);
- if(stage->previous)
- in_prefix = get_out_prefix(stage->previous->type);
- out_prefix = get_out_prefix(stage->type);
- stage->content.visit(*this);
-}
-
-void Compiler::InterfaceGenerator::visit(Block &block)
-{
- SetForScope<unsigned> set(scope_level, scope_level+1);
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); )
- {
- (*i)->visit(*this);
-
- if(scope_level==1)
- {
- for(map<string, RefPtr<VariableDeclaration> >::iterator j=iface_declarations.begin(); j!=iface_declarations.end(); ++j)
- {
- NodeList<Statement>::iterator k = block.body.insert(i, j->second);
- (*k)->visit(*this);
- }
- iface_declarations.clear();
- }
-
- apply_and_increment(block, i);
- }
-}
-
-string Compiler::InterfaceGenerator::change_prefix(const string &name, const string &prefix) const
-{
- unsigned offset = (name.compare(0, in_prefix.size(), in_prefix) ? 0 : in_prefix.size());
- return prefix+name.substr(offset);
-}
-
-bool Compiler::InterfaceGenerator::generate_interface(VariableDeclaration &var, const string &iface, const string &name)
-{
- const map<string, VariableDeclaration *> &stage_vars = (iface=="in" ? stage->in_variables : stage->out_variables);
- if(stage_vars.count(name) || iface_declarations.count(name))
- return false;
-
- VariableDeclaration* iface_var = new VariableDeclaration;
- iface_var->sampling = var.sampling;
- iface_var->interface = iface;
- iface_var->type = var.type;
- iface_var->type_declaration = var.type_declaration;
- iface_var->name = name;
- if(stage->type==GEOMETRY)
- iface_var->array = ((var.array && var.interface!="in") || iface=="in");
- else
- iface_var->array = var.array;
- if(iface_var->array)
- iface_var->array_size = var.array_size;
- if(iface=="in")
- iface_var->linked_declaration = &var;
- iface_declarations[name] = iface_var;
-
- return true;
-}
-
-ExpressionStatement &Compiler::InterfaceGenerator::insert_assignment(const string &left, Expression *right)
-{
- Assignment *assign = new Assignment;
- VariableReference *ref = new VariableReference;
- ref->name = left;
- assign->left = ref;
- assign->oper = "=";
- assign->right = right;
-
- ExpressionStatement *stmt = new ExpressionStatement;
- stmt->expression = assign;
- stmt->visit(*this);
- insert_nodes.push_back(stmt);
-
- return *stmt;
-}
-
-void Compiler::InterfaceGenerator::visit(VariableReference &var)
-{
- if(var.declaration || !stage->previous)
- return;
- if(iface_declarations.count(var.name))
- return;
-
- const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
- map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
- if(i==prev_out.end())
- i = prev_out.find(in_prefix+var.name);
- if(i!=prev_out.end())
- {
- generate_interface(*i->second, "in", i->second->name);
- var.name = i->second->name;
- }
-}
-
-void Compiler::InterfaceGenerator::visit(VariableDeclaration &var)
-{
- if(var.interface=="out")
- {
- if(scope_level==1)
- stage->out_variables[var.name] = &var;
- else if(generate_interface(var, "out", change_prefix(var.name, string())))
- {
- remove_node = true;
- if(var.init_expression)
- {
- ExpressionStatement &stmt = insert_assignment(var.name, var.init_expression->clone());
- stmt.source = var.source;
- stmt.line = var.line;
- return;
- }
- }
- }
- else if(var.interface=="in")
- {
- stage->in_variables[var.name] = &var;
- if(var.linked_declaration)
- var.linked_declaration->linked_declaration = &var;
- else if(stage->previous)
- {
- const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
- map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
- if(i!=prev_out.end())
- {
- var.linked_declaration = i->second;
- i->second->linked_declaration = &var;
- }
- }
- }
-
- TraversingVisitor::visit(var);
-}
-
-void Compiler::InterfaceGenerator::visit(Passthrough &pass)
-{
- vector<VariableDeclaration *> pass_vars;
-
- 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, RefPtr<VariableDeclaration> >::const_iterator i=iface_declarations.begin(); i!=iface_declarations.end(); ++i)
- if(i->second->interface=="in")
- pass_vars.push_back(i->second.get());
-
- if(stage->previous)
- {
- const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
- for(map<string, VariableDeclaration *>::const_iterator i=prev_out.begin(); i!=prev_out.end(); ++i)
- {
- bool linked = false;
- for(vector<VariableDeclaration *>::const_iterator j=pass_vars.begin(); (!linked && j!=pass_vars.end()); ++j)
- linked = ((*j)->linked_declaration==i->second);
-
- if(!linked && generate_interface(*i->second, "in", i->second->name))
- pass_vars.push_back(i->second);
- }
- }
-
- 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);
- generate_interface(**i, "out", out_name);
-
- VariableReference *ref = new VariableReference;
- ref->name = (*i)->name;
- if(pass.subscript)
- {
- BinaryExpression *subscript = new BinaryExpression;
- subscript->left = ref;
- subscript->oper = "[";
- subscript->right = pass.subscript;
- subscript->after = "]";
- insert_assignment(out_name, subscript);
- }
- else
- insert_assignment(out_name, ref);
- }
-
- remove_node = true;
-}
-
-
-Compiler::DeclarationReorderer::DeclarationReorderer():
- scope_level(0),
- kind(NO_DECLARATION)
-{ }
-
-void Compiler::DeclarationReorderer::visit(FunctionCall &call)
-{
- FunctionDeclaration *def = call.declaration;
- if(def)
- def = def->definition;
- if(def && !ordered_funcs.count(def))
- needed_funcs.insert(def);
-}
-
-void Compiler::DeclarationReorderer::visit(Block &block)
-{
- SetForScope<unsigned> set(scope_level, scope_level+1);
- if(scope_level>1)
- return Visitor::visit(block);
-
- NodeList<Statement>::iterator struct_insert_point = block.body.end();
- NodeList<Statement>::iterator variable_insert_point = block.body.end();
- NodeList<Statement>::iterator function_insert_point = block.body.end();
- unsigned unordered_func_count = 0;
- bool ordered_any_funcs = false;
-
- for(NodeList<Statement>::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(kind==FUNCTION)
- {
- if(function_insert_point==block.body.end())
- function_insert_point = i;
-
- if(needed_funcs.empty())
- {
- ordered_funcs.insert(i->get());
- if(i!=function_insert_point)
- {
- block.body.insert(function_insert_point, *i);
- moved = true;
- }
- else
- ++function_insert_point;
- ordered_any_funcs = true;
- }
- else
- ++unordered_func_count;
- }
-
- if(moved)
- {
- if(function_insert_point==i)
- ++function_insert_point;
- block.body.erase(i++);
- }
- else
- ++i;
-
- if(i==block.body.end() && unordered_func_count)
- {
- if(!ordered_any_funcs)
- // A subset of the remaining functions forms a recursive loop
- /* TODO pick a function and move it up, adding any necessary
- declarations */
- break;
-
- i = function_insert_point;
- unordered_func_count = 0;
- }
- }
-}
-
-void Compiler::DeclarationReorderer::visit(VariableDeclaration &var)
-{
- Visitor::visit(var);
- kind = VARIABLE;
-}
-
-void Compiler::DeclarationReorderer::visit(FunctionDeclaration &func)
-{
- needed_funcs.clear();
- func.body.visit(*this);
- needed_funcs.erase(&func);
- kind = FUNCTION;
-}
-
-
-Compiler::InlineableFunctionLocator::InlineableFunctionLocator():
- in_function(0)
-{ }
-
-void Compiler::InlineableFunctionLocator::visit(FunctionCall &call)
-{
- 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 Compiler::InlineableFunctionLocator::visit(FunctionDeclaration &func)
-{
- unsigned &count = refcounts[func.definition];
- if(!count && func.parameters.empty())
- inlineable.insert(func.definition);
-
- SetForScope<FunctionDeclaration *> set(in_function, &func);
- TraversingVisitor::visit(func);
-}
-
-
-Compiler::FunctionInliner::FunctionInliner():
- extract_result(0)
-{ }
-
-Compiler::FunctionInliner::FunctionInliner(const set<FunctionDeclaration *> &in):
- inlineable(in),
- extract_result(0)
-{ }
-
-void Compiler::FunctionInliner::visit_and_inline(RefPtr<Expression> &ptr)
-{
- inline_result = 0;
- ptr->visit(*this);
- if(inline_result)
- ptr = inline_result;
-}
-
-void Compiler::FunctionInliner::visit(Block &block)
-{
- if(extract_result)
- --extract_result;
-
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); ++i)
- {
- (*i)->visit(*this);
- if(extract_result)
- --extract_result;
- }
-}
-
-void Compiler::FunctionInliner::visit(UnaryExpression &unary)
-{
- visit_and_inline(unary.expression);
- inline_result = 0;
-}
-
-void Compiler::FunctionInliner::visit(BinaryExpression &binary)
-{
- visit_and_inline(binary.left);
- visit_and_inline(binary.right);
- inline_result = 0;
-}
-
-void Compiler::FunctionInliner::visit(MemberAccess &memacc)
-{
- visit_and_inline(memacc.left);
- inline_result = 0;
-}
-
-void Compiler::FunctionInliner::visit(FunctionCall &call)
-{
- for(NodeArray<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 Compiler::FunctionInliner::visit(VariableDeclaration &var)
-{
- if(var.init_expression)
- visit_and_inline(var.init_expression);
- inline_result = 0;
-}
-
-void Compiler::FunctionInliner::visit(Return &ret)
-{
- TraversingVisitor::visit(ret);
-
- if(extract_result)
- inline_result = ret.expression->clone();
-}
-
-
-Compiler::ExpressionEvaluator::ExpressionEvaluator():
- variable_values(0),
- result(0.0f),
- result_valid(false)
-{ }
-
-Compiler::ExpressionEvaluator::ExpressionEvaluator(const ValueMap &v):
- variable_values(&v),
- result(0.0f),
- result_valid(false)
-{ }
-
-void Compiler::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 Compiler::ExpressionEvaluator::visit(ParenthesizedExpression &parexp)
-{
- parexp.expression->visit(*this);
-}
-
-void Compiler::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 Compiler::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 Compiler::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;
-}
-
-
-Compiler::ConstantConditionEliminator::ConstantConditionEliminator():
- scope_level(0),
- record_only(false)
-{ }
-
-void Compiler::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 Compiler::ConstantConditionEliminator::visit(UnaryExpression &unary)
-{
- if(VariableReference *var = dynamic_cast<VariableReference *>(unary.expression.get()))
- if(unary.oper=="++" || unary.oper=="--")
- variable_values.erase(var->declaration);
-}
-
-void Compiler::ConstantConditionEliminator::visit(Assignment &assign)
-{
- variable_values.erase(assign.target_declaration);
-}
-
-void Compiler::ConstantConditionEliminator::visit(VariableDeclaration &var)
-{
- if(var.constant || scope_level>1)
- variable_values[&var] = var.init_expression.get();
-}
-
-void Compiler::ConstantConditionEliminator::visit(Conditional &cond)
-{
- if(!record_only)
- {
- ExpressionEvaluator eval(variable_values);
- cond.condition->visit(eval);
- if(eval.result_valid)
- {
- flatten_block(eval.result ? cond.body : cond.else_body);
- return;
- }
- }
-
- TraversingVisitor::visit(cond);
-}
-
-void Compiler::ConstantConditionEliminator::visit(Iteration &iter)
-{
- if(!record_only)
- {
- if(iter.condition)
- {
- /* If the loop condition is always false on the first iteration, the
- entire loop can be removed */
- if(iter.init_statement)
- iter.init_statement->visit(*this);
- ExpressionEvaluator eval(variable_values);
- iter.condition->visit(eval);
- if(eval.result_valid && !eval.result)
- {
- remove_node = true;
- return;
- }
- }
-
- /* Record all assignments that occur inside the loop body so those
- variables won't be considered as constant */
- SetFlag set_record(record_only);
- TraversingVisitor::visit(iter);
- }
-
- TraversingVisitor::visit(iter);
-
- if(VariableDeclaration *init_decl = dynamic_cast<VariableDeclaration *>(iter.init_statement.get()))
- variable_values.erase(init_decl);
-}
-
-
-Compiler::UnusedVariableLocator::UnusedVariableLocator():
- aggregate(0),
- assignment(0),
- assignment_target(false),
- assign_to_subscript(false),
- global_scope(true)
-{ }
-
-void Compiler::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 Compiler::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 Compiler::UnusedVariableLocator::visit(MemberAccess &memacc)
-{
- TraversingVisitor::visit(memacc);
- unused_nodes.erase(memacc.declaration);
-}
-
-void Compiler::UnusedVariableLocator::visit(BinaryExpression &binary)
-{
- if(binary.oper=="[")
- {
- if(assignment_target)
- assign_to_subscript = true;
- binary.left->visit(*this);
- SetForScope<bool> set(assignment_target, false);
- binary.right->visit(*this);
- }
- else
- TraversingVisitor::visit(binary);
-}
-
-void Compiler::UnusedVariableLocator::visit(Assignment &assign)
-{
- {
- assign_to_subscript = false;
- SetForScope<bool> set(assignment_target, !assign.self_referencing);
- assign.left->visit(*this);
- }
- assign.right->visit(*this);
- assignment = &assign;
-}
-
-void Compiler::UnusedVariableLocator::record_assignment(VariableDeclaration &var, Node &node, bool chained)
-{
- VariableInfo &var_info = variables.back()[&var];
- if(!chained)
- clear_assignments(var_info, true);
- var_info.assignments.push_back(&node);
- var_info.conditionally_assigned = false;
-}
-
-void Compiler::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 Compiler::UnusedVariableLocator::visit(ExpressionStatement &expr)
-{
- assignment = 0;
- TraversingVisitor::visit(expr);
- if(assignment && assignment->target_declaration)
- record_assignment(*assignment->target_declaration, expr, (assignment->self_referencing || assign_to_subscript));
-}
-
-void Compiler::UnusedVariableLocator::visit(StructDeclaration &strct)
-{
- SetForScope<Node *> set(aggregate, &strct);
- unused_nodes.insert(&strct);
- TraversingVisitor::visit(strct);
-}
-
-void Compiler::UnusedVariableLocator::visit(VariableDeclaration &var)
-{
- if(aggregate)
- aggregates[&var] = aggregate;
- else
- {
- variables.back()[&var].local = true;
- if(var.init_expression)
- record_assignment(var, *var.init_expression, false);
- }
- unused_nodes.erase(var.type_declaration);
- TraversingVisitor::visit(var);
-}
-
-void Compiler::UnusedVariableLocator::visit(InterfaceBlock &iface)
-{
- SetForScope<Node *> set(aggregate, &iface);
- unused_nodes.insert(&iface);
- TraversingVisitor::visit(iface);
-}
-
-void Compiler::UnusedVariableLocator::visit(FunctionDeclaration &func)
-{
- variables.push_back(BlockVariableMap());
-
- {
- SetForScope<bool> set(global_scope, false);
- for(NodeArray<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(NodeArray<VariableDeclaration>::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
- block_variables[i->get()].referenced = true;
- merge_down_variables();
-}
-
-void Compiler::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, i->first->interface!="out");
- 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 Compiler::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 Compiler::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();
-}
-
-
-Compiler::UnusedVariableLocator::VariableInfo::VariableInfo():
- local(false),
- conditionally_assigned(false),
- referenced(false)
-{ }
-
-
-void Compiler::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 Compiler::UnusedFunctionLocator::visit(FunctionDeclaration &func)
-{
- TraversingVisitor::visit(func);
-
- if((func.name!="main" || func.body.body.empty()) && !used_definitions.count(&func))
- unused_nodes.insert(&func);
-}
-
-
-Compiler::NodeRemover::NodeRemover(const set<Node *> &r):
- to_remove(r)
-{ }
-
-void Compiler::NodeRemover::visit(Block &block)
-{
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); )
- {
- (*i)->visit(*this);
- if(to_remove.count(i->get()))
- block.body.erase(i++);
- else
- ++i;
- }
-}
-
-void Compiler::NodeRemover::visit(VariableDeclaration &var)
-{
- if(to_remove.count(&var))
- {
- 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.get()))
- var.init_expression = 0;
-}
-
-void Compiler::NodeRemover::visit(Iteration &iter)
-{
- if(to_remove.count(iter.init_statement.get()))
- iter.init_statement = 0;
- TraversingVisitor::visit(iter);
-}
-
-
-void Compiler::PrecisionRemover::visit(Precision &)
-{
- remove_node = true;
-}
-
-void Compiler::PrecisionRemover::visit(VariableDeclaration &var)
-{
- var.precision.clear();
-}
-
-
-Compiler::DefaultPrecisionGenerator::DefaultPrecisionGenerator():
- toplevel(true)
-{ }
-
-void Compiler::DefaultPrecisionGenerator::visit(Block &block)
-{
- if(toplevel)
- {
- SetForScope<bool> set(toplevel, false);
- BlockModifier::visit(block);
- }
- else
- Visitor::visit(block);
-}
-
-void Compiler::DefaultPrecisionGenerator::visit(Precision &prec)
-{
- have_default.insert(prec.type);
-}
-
-void Compiler::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);
- }
-}
-
-
-Compiler::LegacyConverter::LegacyConverter():
- target_api(get_gl_api()),
- target_version(get_glsl_version()),
- frag_out(0)
-{ }
-
-Compiler::LegacyConverter::LegacyConverter(const Version &v):
- target_api(get_gl_api()),
- target_version(v),
- frag_out(0)
-{ }
-
-bool Compiler::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 Compiler::LegacyConverter::check_extension(const Extension &extension) const
-{
- if(!extension)
- return false;
-
- vector<const Extension *>::iterator i = find(stage->required_extensions, &extension);
- if(i==stage->required_extensions.end())
- stage->required_extensions.push_back(&extension);
-
- return true;
-}
-
-bool Compiler::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 Compiler::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 Compiler::LegacyConverter::visit(Assignment &assign)
-{
- TraversingVisitor::visit(assign);
- if(assign.target_declaration==frag_out && !supports_unified_interface_syntax())
- assign.target_declaration = 0;
-}
-
-bool Compiler::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 Compiler::LegacyConverter::visit(FunctionCall &call)
-{
- if(call.name=="texture" && !call.declaration && !supports_unified_sampling_functions())
- {
- NodeArray<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=="samplerCube")
- call.name = "textureCube";
- else if(type=="sampler1DShadow")
- call.name = "shadow1D";
- else if(type=="sampler2DShadow")
- call.name = "shadow2D";
- else if(type=="sampler1DArray")
- {
- check_extension(EXT_texture_array);
- call.name = "texture1DArray";
- }
- else if(type=="sampler2DArray")
- {
- check_extension(EXT_texture_array);
- call.name = "texture2DArray";
- }
- else if(type=="sampler1DArrayShadow")
- {
- check_extension(EXT_texture_array);
- call.name = "shadow1DArray";
- }
- else if(type=="sampler2DArrayShadow")
- {
- check_extension(EXT_texture_array);
- call.name = "shadow2DArray";
- }
-
- for(; i!=call.arguments.end(); ++i)
- (*i)->visit(*this);
- }
- }
- else
- TraversingVisitor::visit(call);
-}
-
-bool Compiler::LegacyConverter::supports_interface_layouts() const
-{
- if(target_api==OPENGL_ES2)
- return check_version(Version(3, 0));
- else if(check_version(Version(3, 30)))
- return true;
- else
- return check_extension(ARB_explicit_attrib_location);
-}
-
-bool Compiler::LegacyConverter::supports_centroid_sampling() const
-{
- if(target_api==OPENGL_ES2)
- return check_version(Version(3, 0));
- else if(check_version(Version(1, 20)))
- return true;
- else
- return check_extension(EXT_gpu_shader4);
-}
-
-bool Compiler::LegacyConverter::supports_sample_sampling() const
-{
- if(target_api==OPENGL_ES2)
- return check_version(Version(3, 20));
- else if(check_version(Version(4, 0)))
- return true;
- else
- return check_extension(ARB_gpu_shader5);
-}
-
-void Compiler::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.sampling=="centroid")
- {
- if(!supports_centroid_sampling())
- var.sampling = string();
- }
- else if(var.sampling=="sample")
- {
- if(!supports_sample_sampling())
- var.sampling = string();
- }
-
- 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 Compiler::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 if(check_version(Version(1, 50)))
- return true;
- else if(iface=="uniform")
- return check_extension(ARB_uniform_buffer_object);
- else
- return false;
-}
-
-void Compiler::LegacyConverter::visit(InterfaceBlock &iface)
+void Compiler::inject_block(Block &target, const Block &source)
{
- if(!supports_interface_blocks(iface.interface))
- flatten_block(iface.members);
+ auto insert_point = target.body.begin();
+ for(const RefPtr<Statement> &s: source.body)
+ target.body.insert(insert_point, s->clone());
}
} // namespace SL
projects / libs / gl.git / blobdiff