X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fprogramcompiler.cpp;h=fd27839da25e1f7cb377a7fdf46079bfb1e862f3;hb=ad3238a5acffa0f200a550c5668c18d931d1c569;hp=5f8c6f9b91f612c218992ff8553620803b1f269a;hpb=e6824add54056141e7507a33e821af01d1398973;p=libs%2Fgl.git

diff --git a/source/programcompiler.cpp b/source/programcompiler.cpp
index 5f8c6f9b..fd27839d 100644
--- a/source/programcompiler.cpp
+++ b/source/programcompiler.cpp
@@ -160,6 +160,7 @@ void ProgramCompiler::generate(Stage &stage)
 {
 	inject_block(stage.content, module->shared.content);
 
+	apply<DeclarationReorderer>(stage);
 	apply<FunctionResolver>(stage);
 	apply<VariableResolver>(stage);
 	apply<InterfaceGenerator>(stage);
@@ -367,7 +368,17 @@ void ProgramCompiler::Formatter::visit(VariableDeclaration &var)
 	if(!var.sampling.empty())
 		formatted += format("%s ", var.sampling);
 	if(!var.interface.empty() && var.interface!=block_interface)
-		formatted += format("%s ", var.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";
+		}
+		formatted += format("%s ", interface);
+	}
 	formatted += format("%s %s", var.type, var.name);
 	if(var.array)
 	{
@@ -1228,8 +1239,7 @@ void ProgramCompiler::UnusedVariableLocator::apply(Stage &s)
 		if(!i->second.referenced)
 		{
 			unused_nodes.insert(i->first);
-			for(vector<Node *>::iterator j=i->second.assignments.begin(); j!=i->second.assignments.end(); ++j)
-				unused_nodes.insert(*j);
+			clear_assignments(i->second, true);
 		}
 	}
 	variables.pop_back();
@@ -1281,11 +1291,21 @@ void ProgramCompiler::UnusedVariableLocator::record_assignment(VariableDeclarati
 {
 	VariableInfo &var_info = variables.back()[&var];
 	if(!self_ref)
-		var_info.assignments.clear();
+		clear_assignments(var_info, true);
 	var_info.assignments.push_back(&node);
 	var_info.conditionally_assigned = false;
 }
 
+void ProgramCompiler::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 ProgramCompiler::UnusedVariableLocator::visit(ExpressionStatement &expr)
 {
 	assignment = 0;
@@ -1336,6 +1356,8 @@ void ProgramCompiler::UnusedVariableLocator::visit(FunctionDeclaration &func)
 	BlockVariableMap &block_variables = variables.back();
 	for(BlockVariableMap::iterator i=block_variables.begin(); i!=block_variables.end(); ++i)
 		i->second.conditionally_assigned = true;
+	for(vector<RefPtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
+		block_variables[i->get()].referenced = true;
 	merge_down_variables();
 }
 
@@ -1349,8 +1371,7 @@ void ProgramCompiler::UnusedVariableLocator::merge_down_variables()
 		{
 			if(!i->second.referenced)
 				unused_nodes.insert(i->first);
-			for(vector<Node *>::iterator j=i->second.assignments.begin(); j!=i->second.assignments.end(); ++j)
-				unused_nodes.insert(*j);
+			clear_assignments(i->second, true);
 			continue;
 		}
 
@@ -1359,11 +1380,9 @@ void ProgramCompiler::UnusedVariableLocator::merge_down_variables()
 			parent_variables.insert(*i);
 		else
 		{
-			if(!i->second.conditionally_assigned)
-			{
-				j->second.assignments.clear();
-				j->second.conditionally_assigned = true;
-			}
+			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());
 		}
@@ -1438,7 +1457,7 @@ void ProgramCompiler::UnusedFunctionLocator::visit(FunctionDeclaration &func)
 {
 	TraversingVisitor::visit(func);
 
-	if(func.name!="main" && !used_definitions.count(&func))
+	if((func.name!="main" || func.body.body.empty()) && !used_definitions.count(&func))
 		unused_nodes.insert(&func);
 }
 
@@ -1475,11 +1494,13 @@ void ProgramCompiler::NodeRemover::visit(VariableDeclaration &var)
 
 
 ProgramCompiler::LegacyConverter::LegacyConverter():
-	target_version(get_glsl_version())
+	target_version(get_glsl_version()),
+	frag_out(0)
 { }
 
 ProgramCompiler::LegacyConverter::LegacyConverter(const Version &v):
-	target_version(v)
+	target_version(v),
+	frag_out(0)
 { }
 
 bool ProgramCompiler::LegacyConverter::check_version(const Version &feature_version)
@@ -1494,7 +1515,7 @@ bool ProgramCompiler::LegacyConverter::check_version(const Version &feature_vers
 
 void ProgramCompiler::LegacyConverter::visit(VariableReference &var)
 {
-	if(var.name==frag_out_name && !check_version(Version(1, 30)))
+	if(var.declaration==frag_out && !check_version(Version(1, 30)))
 	{
 		var.name = "gl_FragColor";
 		var.declaration = 0;
@@ -1506,6 +1527,13 @@ void ProgramCompiler::LegacyConverter::visit(VariableReference &var)
 		type = string();
 }
 
+void ProgramCompiler::LegacyConverter::visit(Assignment &assign)
+{
+	TraversingVisitor::visit(assign);
+	if(assign.target_declaration==frag_out && !check_version(Version(1, 30)))
+		assign.target_declaration = 0;
+}
+
 void ProgramCompiler::LegacyConverter::visit(FunctionCall &call)
 {
 	if(call.name=="texture" && !call.declaration && !check_version(Version(1, 30)))
@@ -1560,13 +1588,9 @@ void ProgramCompiler::LegacyConverter::visit(VariableDeclaration &var)
 
 	if((var.interface=="in" || var.interface=="out") && !check_version(Version(1, 30)))
 	{
-		if(stage->type==VERTEX && var.interface=="in")
-			var.interface = "attribute";
-		else if((stage->type==VERTEX && var.interface=="out") || (stage->type==FRAGMENT && var.interface=="in"))
-			var.interface = "varying";
-		else if(stage->type==FRAGMENT && var.interface=="out")
+		if(stage->type==FRAGMENT && var.interface=="out")
 		{
-			frag_out_name = var.name;
+			frag_out = &var;
 			remove_node = true;
 		}
 	}