X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fglsl%2Fcompiler.cpp;h=ccfbe691195eefd91aa4314281db6afc1bb97c97;hp=db9017cfb675745779ca45e7654f092ad9d868e6;hb=041ba4b1acd55337239c5ce24cc310118c621206;hpb=99719790df8a1215465a68c7b1d87a495bff87eb

diff --git a/source/glsl/compiler.cpp b/source/glsl/compiler.cpp
index db9017cf..ccfbe691 100644
--- a/source/glsl/compiler.cpp
+++ b/source/glsl/compiler.cpp
@@ -1,14 +1,17 @@
 #include <msp/core/algorithm.h>
-#include <msp/gl/extensions/ext_gpu_shader4.h>
 #include <msp/strings/format.h>
+#include <msp/strings/utils.h>
+#include "builtin.h"
 #include "compatibility.h"
 #include "compiler.h"
+#include "debug.h"
 #include "error.h"
 #include "generate.h"
+#include "glsl_error.h"
 #include "optimize.h"
 #include "output.h"
 #include "resources.h"
-#include "shader.h"
+#include "validate.h"
 
 #undef interface
 
@@ -19,7 +22,15 @@ namespace GL {
 namespace SL {
 
 Compiler::Compiler():
-	module(0)
+	features(Features::from_context()),
+	module(0),
+	specialized(false)
+{ }
+
+Compiler::Compiler(const Features &f):
+	features(f),
+	module(0),
+	specialized(false)
 { }
 
 Compiler::~Compiler()
@@ -56,62 +67,118 @@ void Compiler::load_source(IO::Base &io, const string &src_name)
 	load_source(io, 0, src_name);
 }
 
-void Compiler::compile()
+void Compiler::specialize(const map<string, int> &sv)
+{
+	specialized = true;
+	spec_values = sv;
+}
+
+void Compiler::compile(Mode mode)
 {
 	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(); )
+		generate(*i, mode);
+
+	bool valid = true;
+	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		if(!validate(*i))
+			valid = false;
+	if(!valid)
+		throw invalid_shader_source(get_diagnostics());
+
+	unsigned n = 0;
+	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++n)
 	{
-		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);
+		finalize(*i, mode);
 }
 
-void Compiler::add_shaders(Program &program)
+string Compiler::get_combined_glsl() const
 {
-	if(!module)
-		throw invalid_operation("Compiler::add_shaders");
+	string glsl;
 
-	try
-	{
-		for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
-		{
-			string stage_src = Formatter().apply(*i);
-
-			if(i->type==Stage::VERTEX)
-			{
-				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==Stage::GEOMETRY)
-				program.attach_shader_owned(new GeometryShader(stage_src));
-			else if(i->type==Stage::FRAGMENT)
-			{
-				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)
-						program.bind_fragment_data(j->second, j->first);
-				}
-			}
-		}
-	}
-	catch(const compile_error &e)
+	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(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
 	{
-		throw compile_error(module->source_map.translate_errors(e.what()));
+		glsl += format("#pragma MSP stage(%s)\n", Stage::get_stage_name(i->type));
+		glsl += Formatter().apply(*i, MODULE);
+		glsl += '\n';
 	}
+
+	return glsl;
+}
+
+vector<Stage::Type> Compiler::get_stages() const
+{
+	vector<Stage::Type> stage_types;
+	stage_types.reserve(module->stages.size());
+	for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		stage_types.push_back(i->type);
+	return stage_types;
+}
+
+string Compiler::get_stage_glsl(Stage::Type stage_type) const
+{
+	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		if(i->type==stage_type)
+			return Formatter().apply(*i, PROGRAM);
+	throw key_error(Stage::get_stage_name(stage_type));
+}
+
+const map<string, unsigned> &Compiler::get_vertex_attributes() const
+{
+	for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		if(i->type==Stage::VERTEX)
+			return i->locations;
+	throw invalid_operation("Compiler::get_vertex_attributes");
+}
+
+const map<string, unsigned> &Compiler::get_fragment_outputs() const
+{
+	for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		if(i->type==Stage::FRAGMENT)
+			return i->locations;
+	throw invalid_operation("Compiler::get_fragment_outputs");
+}
+
+const SourceMap &Compiler::get_source_map() const
+{
+	return module->source_map;
+}
+
+string Compiler::get_stage_debug(Stage::Type stage_type) const
+{
+	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		if(i->type==stage_type)
+			return DumpTree().apply(*i);
+	throw key_error(Stage::get_stage_name(stage_type));
+}
+
+string Compiler::get_diagnostics() const
+{
+	string combined;
+	for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		for(vector<Diagnostic>::const_iterator j=i->diagnostics.begin(); j!=i->diagnostics.end(); ++j)
+			if(j->source!=INTERNAL_SOURCE)
+				append(combined, "\n", format("%s:%d: %s", module->source_map.get_name(j->source), j->line, j->message));
+	return combined;
 }
 
 void Compiler::append_module(Module &mod, DataFile::Collection *res)
 {
 	module->source_map.merge_from(mod.source_map);
 
-	vector<Import *> imports = NodeGatherer<Import>().apply(mod.shared);
+	vector<Import *> imports;
+	for(NodeList<Statement>::const_iterator i=mod.shared.content.body.begin(); i!=mod.shared.content.body.end(); ++i)
+		if(Import *imp = dynamic_cast<Import *>(i->get()))
+			imports.push_back(imp);
 	for(vector<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
 		import(res, (*i)->module);
 	NodeRemover().apply(mod.shared, set<Node *>(imports.begin(), imports.end()));
@@ -143,8 +210,8 @@ void Compiler::append_stage(Stage &stage)
 		target = &*i;
 	}
 
-	if(stage.required_version>target->required_version)
-		target->required_version = stage.required_version;
+	if(stage.required_features.glsl_version>target->required_features.glsl_version)
+		target->required_features.glsl_version = stage.required_features.glsl_version;
 	for(NodeList<Statement>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
 		target->content.body.push_back(*i);
 	DeclarationCombiner().apply(*target);
@@ -164,42 +231,105 @@ void Compiler::import(DataFile::Collection *resources, const string &name)
 	append_module(import_parser.parse(*io, fn, module->source_map.get_count()), resources);
 }
 
-void Compiler::generate(Stage &stage)
+void Compiler::generate(Stage &stage, Mode mode)
 {
-	if(module->shared.required_version>stage.required_version)
-		stage.required_version = module->shared.required_version;
+	stage.required_features.gl_api = features.gl_api;
+	if(module->shared.required_features.glsl_version>stage.required_features.glsl_version)
+		stage.required_features.glsl_version = module->shared.required_features.glsl_version;
+
 	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);
+
+	// Initial resolving pass
+	resolve(stage);
 
-	DeclarationReorderer().apply(stage);
-	BlockResolver().apply(stage);
-	FunctionResolver().apply(stage);
-	VariableResolver().apply(stage);
+	/* All variables local to a stage have been resolved.  Resolve non-local
+	variables through interfaces. */
 	InterfaceGenerator().apply(stage);
-	VariableResolver().apply(stage);
-	DeclarationReorderer().apply(stage);
-	FunctionResolver().apply(stage);
-	LegacyConverter().apply(stage);
+	resolve(stage, RESOLVE_BLOCKS|RESOLVE_TYPES|RESOLVE_VARIABLES);
+
+	ConstantSpecializer().apply(stage, (mode==PROGRAM && specialized ? &spec_values : 0));
+	if(mode==PROGRAM)
+	{
+		LegacyConverter().apply(stage, features);
+		resolve(stage, RESOLVE_VARIABLES|RESOLVE_FUNCTIONS);
+	}
+}
+
+template<typename T>
+bool Compiler::resolve(Stage &stage, unsigned &flags, unsigned bit)
+{
+	if(!(flags&bit))
+		return false;
+
+	flags &= ~bit;
+	return T().apply(stage);
 }
 
-bool Compiler::optimize(Stage &stage)
+void Compiler::resolve(Stage &stage, unsigned flags)
+{
+	while(flags)
+	{
+		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;
+	}
+}
+
+bool Compiler::validate(Stage &stage)
+{
+	TypeValidator().apply(stage);
+	DeclarationValidator().apply(stage);
+	ReferenceValidator().apply(stage);
+	ExpressionValidator().apply(stage);
+
+	for(vector<Diagnostic>::const_iterator i=stage.diagnostics.begin(); i!=stage.diagnostics.end(); ++i)
+		if(i->severity==Diagnostic::ERR)
+			return false;
+
+	return true;
+}
+
+Compiler::OptimizeResult Compiler::optimize(Stage &stage)
 {
 	ConstantConditionEliminator().apply(stage);
 
-	FunctionInliner().apply(stage);
-	BlockResolver().apply(stage);
-	VariableResolver().apply(stage);
+	bool any_inlined = false;
+	if(FunctionInliner().apply(stage))
+	{
+		resolve(stage, RESOLVE_TYPES|RESOLVE_VARIABLES|RESOLVE_EXPRESSIONS);
+		any_inlined = true;
+	}
+	if(ExpressionInliner().apply(stage))
+	{
+		resolve(stage, RESOLVE_VARIABLES|RESOLVE_EXPRESSIONS);
+		any_inlined = true;
+	}
 
-	bool result = UnusedVariableRemover().apply(stage);
-	result |= UnusedFunctionRemover().apply(stage);
+	/* Removing variables or functions may cause things from the previous stage
+	to become unused. */
+	bool any_removed = UnusedVariableRemover().apply(stage);
+	any_removed |= UnusedFunctionRemover().apply(stage);
+	any_removed |= UnusedTypeRemover().apply(stage);
 
-	return result;
+	return any_removed ? REDO_PREVIOUS : any_inlined ? REDO_STAGE : NEXT_STAGE;
 }
 
-void Compiler::finalize(Stage &stage)
+void Compiler::finalize(Stage &stage, Mode mode)
 {
-	if(get_gl_api()==OPENGL_ES2)
+	if(get_gl_api()==OPENGL_ES2 && mode==PROGRAM)
 		DefaultPrecisionGenerator().apply(stage);
-	else
+	else if(mode==MODULE)
 		PrecisionRemover().apply(stage);
 }