X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fglsl%2Fcompiler.cpp;h=b2c4f9ba2cbed88dee8b4e70f00d8a6c4afb5739;hp=89ffd7f3f0bb73cfa295a76ccac9b5f2776a099a;hb=cdc2c7176202b4f8d1f3fd21db9c571511b32fa2;hpb=dccad64b2ec82249d850b9745614042171499972

diff --git a/source/glsl/compiler.cpp b/source/glsl/compiler.cpp
index 89ffd7f3..b2c4f9ba 100644
--- a/source/glsl/compiler.cpp
+++ b/source/glsl/compiler.cpp
@@ -1,14 +1,18 @@
 #include <msp/core/algorithm.h>
-#include <msp/gl/extensions/ext_gpu_shader4.h>
 #include <msp/strings/format.h>
-#include "compatibility.h"
+#include <msp/strings/utils.h>
+#include "builtin.h"
 #include "compiler.h"
+#include "debug.h"
 #include "error.h"
+#include "finalize.h"
 #include "generate.h"
+#include "glsl_error.h"
 #include "optimize.h"
 #include "output.h"
+#include "resolve.h"
 #include "resources.h"
-#include "shader.h"
+#include "validate.h"
 
 #undef interface
 
@@ -19,7 +23,17 @@ namespace GL {
 namespace SL {
 
 Compiler::Compiler():
-	module(0)
+	features(Features::from_context()),
+	module(0),
+	compiled(false),
+	specialized(false)
+{ }
+
+Compiler::Compiler(const Features &f):
+	features(f),
+	module(0),
+	compiled(false),
+	specialized(false)
 { }
 
 Compiler::~Compiler()
@@ -56,23 +70,58 @@ void Compiler::load_source(IO::Base &io, const string &src_name)
 	load_source(io, 0, src_name);
 }
 
+void Compiler::specialize(const map<string, int> &sv)
+{
+	specialized = true;
+	spec_values = sv;
+}
+
 void Compiler::compile(Mode mode)
 {
+	if(specialized && mode!=PROGRAM)
+		throw invalid_operation("Compiler::compile");
+
+	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		generate(*i);
+	ConstantIdAssigner().apply(*module, features);
+
 	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
-		generate(*i, mode);
+		validate(*i);
+	GlobalInterfaceValidator().apply(*module);
+
+	bool valid = true;
+	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+		if(!check_errors(*i))
+			valid = false;
+	if(!valid)
+		throw invalid_shader_source(get_diagnostics());
+
+	if(specialized)
+	{
+		for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
+			ConstantSpecializer().apply(*i, spec_values);
+	}
 	for(list<Stage>::iterator 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;
 	}
+
+	LocationAllocator().apply(*module, features);
 	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
 		finalize(*i, mode);
+
+	compiled = true;
 }
 
 string Compiler::get_combined_glsl() const
 {
+	if(!compiled)
+		throw invalid_operation("Compiler::get_combined_glsl");
+
 	string glsl;
 
 	unsigned source_count = module->source_map.get_count();
@@ -81,7 +130,7 @@ string Compiler::get_combined_glsl() const
 	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
 	{
 		glsl += format("#pragma MSP stage(%s)\n", Stage::get_stage_name(i->type));
-		glsl += Formatter().apply(*i, MODULE);
+		glsl += Formatter().apply(*i);
 		glsl += '\n';
 	}
 
@@ -99,14 +148,18 @@ vector<Stage::Type> Compiler::get_stages() const
 
 string Compiler::get_stage_glsl(Stage::Type stage_type) const
 {
+	if(!compiled)
+		throw invalid_operation("Compiler::get_stage_glsl");
 	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
 		if(i->type==stage_type)
-			return Formatter().apply(*i, PROGRAM);
+			return Formatter().apply(*i);
 	throw key_error(Stage::get_stage_name(stage_type));
 }
 
 const map<string, unsigned> &Compiler::get_vertex_attributes() const
 {
+	if(!compiled)
+		throw invalid_operation("Compiler::get_vertex_attributes");
 	for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
 		if(i->type==Stage::VERTEX)
 			return i->locations;
@@ -115,22 +168,59 @@ const map<string, unsigned> &Compiler::get_vertex_attributes() const
 
 const map<string, unsigned> &Compiler::get_fragment_outputs() const
 {
+	if(!compiled)
+		throw invalid_operation("Compiler::get_fragment_outputs");
 	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 map<string, unsigned> &Compiler::get_texture_bindings() const
+{
+	if(!compiled)
+		throw invalid_operation("Compiler::get_texture_bindings");
+	return module->shared.texture_bindings;
+}
+
+const map<string, unsigned> &Compiler::get_uniform_block_bindings() const
+{
+	if(!compiled)
+		throw invalid_operation("Compiler::get_uniform_block_bindings");
+	return module->shared.uniform_block_bindings;
+}
+
 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()));
@@ -162,11 +252,10 @@ 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);
 }
 
 void Compiler::import(DataFile::Collection *resources, const string &name)
@@ -183,44 +272,130 @@ 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, Mode mode)
+void Compiler::generate(Stage &stage)
 {
-	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);
 
-	DeclarationReorderer().apply(stage);
-	BlockResolver().apply(stage);
-	FunctionResolver().apply(stage);
-	VariableResolver().apply(stage);
+	// Initial resolving pass
+	resolve(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);
-	if(mode==PROGRAM)
-		LegacyConverter().apply(stage);
+	resolve(stage, RESOLVE_BLOCKS|RESOLVE_TYPES|RESOLVE_VARIABLES);
 }
 
-bool Compiler::optimize(Stage &stage)
+template<typename T>
+bool Compiler::resolve(Stage &stage, unsigned &flags, unsigned bit)
 {
+	if(!(flags&bit))
+		return false;
+
+	flags &= ~bit;
+	return T().apply(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|RESOLVE_FUNCTIONS;
+	}
+}
+
+void Compiler::validate(Stage &stage)
+{
+	DeclarationValidator().apply(stage);
+	IdentifierValidator().apply(stage);
+	ReferenceValidator().apply(stage);
+	ExpressionValidator().apply(stage);
+	FlowControlValidator().apply(stage);
+	StageInterfaceValidator().apply(stage);
+}
+
+bool Compiler::check_errors(Stage &stage)
+{
+	stable_sort(stage.diagnostics, &diagnostic_line_order);
+
+	for(vector<Diagnostic>::const_iterator i=stage.diagnostics.begin(); i!=stage.diagnostics.end(); ++i)
+		if(i->severity==Diagnostic::ERR)
+			return false;
+
+	return true;
+}
+
+bool Compiler::diagnostic_line_order(const Diagnostic &diag1, const Diagnostic &diag2)
+{
+	if(diag1.provoking_source!=diag2.provoking_source)
+	{
+		// 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
+			return diag1.provoking_source>diag2.provoking_source;
+	}
+	return diag1.provoking_line<diag2.provoking_line;
+}
+
+Compiler::OptimizeResult Compiler::optimize(Stage &stage)
+{
+	if(ConstantFolder().apply(stage))
+		resolve(stage, RESOLVE_EXPRESSIONS);
 	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_FUNCTIONS|RESOLVE_EXPRESSIONS);
+		any_inlined = true;
+	}
+	if(ExpressionInliner().apply(stage))
+	{
+		resolve(stage, RESOLVE_VARIABLES|RESOLVE_FUNCTIONS|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 = UnreachableCodeRemover().apply(stage);
+	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, Mode mode)
 {
-	if(get_gl_api()==OPENGL_ES2 && mode==PROGRAM)
-		DefaultPrecisionGenerator().apply(stage);
-	else if(mode==MODULE)
-		PrecisionRemover().apply(stage);
+	if(mode==PROGRAM)
+	{
+		LegacyConverter().apply(stage, features);
+		resolve(stage, RESOLVE_VARIABLES|RESOLVE_FUNCTIONS);
+		PrecisionConverter().apply(stage);
+	}
+
+	// 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());
 }
 
 void Compiler::inject_block(Block &target, const Block &source)