]> git.tdb.fi Git - libs/gl.git/blobdiff - source/glsl/compiler.cpp
Rearrange secondary operations in GLSL compiler
[libs/gl.git] / source / glsl / compiler.cpp
index 031ae265f52b514c93384d173218d9b400644fb9..35977cb42be534077bca6c9f3427fbbcc158d443 100644 (file)
@@ -1,14 +1,13 @@
 #include <msp/core/algorithm.h>
 #include <msp/gl/extensions/ext_gpu_shader4.h>
 #include <msp/strings/format.h>
-#include <msp/strings/regex.h>
-#include <msp/strings/utils.h>
 #include "compatibility.h"
 #include "compiler.h"
 #include "error.h"
 #include "generate.h"
 #include "optimize.h"
 #include "output.h"
+#include "resources.h"
 #include "shader.h"
 
 #undef interface
@@ -20,7 +19,6 @@ namespace GL {
 namespace SL {
 
 Compiler::Compiler():
-       resources(0),
        module(0)
 { }
 
@@ -29,31 +27,48 @@ Compiler::~Compiler()
        delete module;
 }
 
-void Compiler::compile(const string &source, const string &src_name)
+void Compiler::clear()
 {
-       resources = 0;
        delete module;
        module = new Module();
+       imported_names.clear();
+       module->source_map.set_name(0, "<generated>");
+}
+
+void Compiler::set_source(const string &source, const string &src_name)
+{
+       clear();
        Parser parser;
        imported_names.push_back(src_name);
-       append_module(parser.parse(source, src_name, 1));
-       process();
+       append_module(parser.parse(source, src_name, 1), 0);
 }
 
-void Compiler::compile(IO::Base &io, Resources *res, const string &src_name)
+void Compiler::load_source(IO::Base &io, DataFile::Collection *res, const string &src_name)
 {
-       resources = res;
-       delete module;
-       module = new Module();
+       clear();
        Parser parser;
        imported_names.push_back(src_name);
-       append_module(parser.parse(io, src_name, 1));
-       process();
+       append_module(parser.parse(io, src_name, 1), res);
 }
 
-void Compiler::compile(IO::Base &io, const string &src_name)
+void Compiler::load_source(IO::Base &io, const string &src_name)
 {
-       compile(io, 0, src_name);
+       load_source(io, 0, src_name);
+}
+
+void Compiler::compile()
+{
+       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(); )
+       {
+               if(optimize(*i))
+                       i = module->stages.begin();
+               else
+                       ++i;
+       }
+       for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+               finalize(*i);
 }
 
 void Compiler::add_shaders(Program &program)
@@ -65,17 +80,19 @@ void Compiler::add_shaders(Program &program)
        {
                for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
                {
-                       if(i->type==VERTEX)
+                       string stage_src = Formatter().apply(*i);
+
+                       if(i->type==Stage::VERTEX)
                        {
-                               program.attach_shader_owned(new VertexShader(apply<Formatter>(*i)));
+                               program.attach_shader_owned(new VertexShader(stage_src));
                                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)
+                       else if(i->type==Stage::GEOMETRY)
+                               program.attach_shader_owned(new GeometryShader(stage_src));
+                       else if(i->type==Stage::FRAGMENT)
                        {
-                               program.attach_shader_owned(new FragmentShader(apply<Formatter>(*i)));
+                               program.attach_shader_owned(new FragmentShader(stage_src));
                                if(EXT_gpu_shader4)
                                {
                                        for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
@@ -86,48 +103,18 @@ void Compiler::add_shaders(Program &program)
        }
        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);
+               throw compile_error(module->source_map.translate_errors(e.what()));
        }
 }
 
-void Compiler::append_module(Module &mod)
+void Compiler::append_module(Module &mod, DataFile::Collection *res)
 {
-       vector<Import *> imports = apply<NodeGatherer<Import> >(mod.shared);
+       module->source_map.merge_from(mod.source_map);
+
+       vector<Import *> imports = NodeGatherer<Import>().apply(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()));
+               import(res, (*i)->module);
+       NodeRemover().apply(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)
@@ -137,7 +124,7 @@ void Compiler::append_module(Module &mod)
 void Compiler::append_stage(Stage &stage)
 {
        Stage *target = 0;
-       if(stage.type==SHARED)
+       if(stage.type==Stage::SHARED)
                target = &module->shared;
        else
        {
@@ -160,25 +147,10 @@ void Compiler::append_stage(Stage &stage)
                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);
+       DeclarationCombiner().apply(*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(); )
-       {
-               if(optimize(*i))
-                       i = module->stages.begin();
-               else
-                       ++i;
-       }
-       for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
-               finalize(*i);
-}
-
-void Compiler::import(const string &name)
+void Compiler::import(DataFile::Collection *resources, const string &name)
 {
        string fn = name+".glsl";
        if(find(imported_names, fn)!=imported_names.end())
@@ -189,7 +161,7 @@ void Compiler::import(const string &name)
        if(!io)
                throw runtime_error(format("module %s not found", name));
        Parser import_parser;
-       append_module(import_parser.parse(*io, fn, imported_names.size()));
+       append_module(import_parser.parse(*io, fn, module->source_map.get_count()), resources);
 }
 
 void Compiler::generate(Stage &stage)
@@ -198,37 +170,34 @@ void Compiler::generate(Stage &stage)
                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);
+       DeclarationReorderer().apply(stage);
+       FunctionResolver().apply(stage);
+       VariableResolver().apply(stage);
+       InterfaceGenerator().apply(stage);
+       VariableResolver().apply(stage);
+       DeclarationReorderer().apply(stage);
+       FunctionResolver().apply(stage);
+       LegacyConverter().apply(stage);
 }
 
 bool Compiler::optimize(Stage &stage)
 {
-       apply<ConstantConditionEliminator>(stage);
+       ConstantConditionEliminator().apply(stage);
 
-       set<FunctionDeclaration *> inlineable = apply<InlineableFunctionLocator>(stage);
-       apply<FunctionInliner>(stage, inlineable);
+       FunctionInliner().apply(stage);
 
-       set<Node *> unused = apply<UnusedVariableLocator>(stage);
-       set<Node *> unused2 = apply<UnusedFunctionLocator>(stage);
-       unused.insert(unused2.begin(), unused2.end());
-       apply<NodeRemover>(stage, unused);
+       bool result = UnusedVariableRemover().apply(stage);
+       result |= UnusedFunctionRemover().apply(stage);
 
-       return !unused.empty();
+       return result;
 }
 
 void Compiler::finalize(Stage &stage)
 {
        if(get_gl_api()==OPENGL_ES2)
-               apply<DefaultPrecisionGenerator>(stage);
+               DefaultPrecisionGenerator().apply(stage);
        else
-               apply<PrecisionRemover>(stage);
+               PrecisionRemover().apply(stage);
 }
 
 void Compiler::inject_block(Block &target, const Block &source)
@@ -238,22 +207,6 @@ void Compiler::inject_block(Block &target, const Block &source)
                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();
-}
-
 } // namespace SL
 } // namespace GL
 } // namespace Msp