X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Freflect.cpp;h=151735ab18f3790d51b94bbf61da68726ce56a39;hb=8967d38bc578f1653c1dde01dce49a8f7b0c912e;hp=a3e36be8448c57eba60bd4ae6a154525e95a4b59;hpb=8f5f54a9e165dae424e5b0bb8e488c3d01849bf6;p=libs%2Fgl.git

diff --git a/source/glsl/reflect.cpp b/source/glsl/reflect.cpp
index a3e36be8..151735ab 100644
--- a/source/glsl/reflect.cpp
+++ b/source/glsl/reflect.cpp
@@ -1,5 +1,7 @@
 #include "reflect.h"
 
+using namespace std;
+
 namespace Msp {
 namespace GL {
 namespace SL {
@@ -41,6 +43,114 @@ void LocationCounter::visit(VariableDeclaration &var)
 				r_count *= literal->value.value<int>();
 }
 
+
+void MemoryRequirementsCalculator::visit(BasicTypeDeclaration &basic)
+{
+	if(basic.kind==BasicTypeDeclaration::BOOL)
+	{
+		r_size = 1;
+		r_alignment = 1;
+	}
+	else if(basic.kind==BasicTypeDeclaration::INT || basic.kind==BasicTypeDeclaration::FLOAT)
+	{
+		r_size = basic.size/8;
+		r_alignment = r_size;
+	}
+	else if(basic.kind==BasicTypeDeclaration::VECTOR || basic.kind==BasicTypeDeclaration::MATRIX)
+	{
+		basic.base_type->visit(*this);
+		unsigned n_elem = basic.size&0xFFFF;
+		r_size *= n_elem;
+		if(basic.kind==BasicTypeDeclaration::VECTOR)
+			r_alignment *= (n_elem==3 ? 4 : n_elem);
+	}
+	else if(basic.kind==BasicTypeDeclaration::ARRAY)
+		basic.base_type->visit(*this);
+}
+
+void MemoryRequirementsCalculator::visit(StructDeclaration &strct)
+{
+	unsigned total = 0;
+	unsigned max_align = 1;
+	for(NodeList<Statement>::iterator i=strct.members.body.begin(); i!=strct.members.body.end(); ++i)
+	{
+		r_size = 0;
+		r_alignment = 1;
+		r_offset = -1;
+		(*i)->visit(*this);
+		if(r_offset)
+			total = r_offset;
+		total += r_alignment-1;
+		total -= total%r_alignment;
+		total += r_size;
+		max_align = max(max_align, r_alignment);
+	}
+	r_size = total;
+	r_alignment = max_align;
+}
+
+void MemoryRequirementsCalculator::visit(VariableDeclaration &var)
+{
+	if(var.layout)
+	{
+		const vector<Layout::Qualifier> qualifiers = var.layout->qualifiers;
+		for(vector<Layout::Qualifier>::const_iterator i=qualifiers.begin(); (r_offset<0 && i!=qualifiers.end()); ++i)
+			if(i->name=="offset")
+				r_offset = i->value;
+	}
+
+	if(var.type_declaration)
+		var.type_declaration->visit(*this);
+	if(var.array)
+		if(const Literal *literal = dynamic_cast<const Literal *>(var.array_size.get()))
+			if(literal->value.check_type<int>())
+				r_size += r_alignment*(literal->value.value<int>()-1);
+}
+
+
+set<Node *> DependencyCollector::apply(FunctionDeclaration &func)
+{
+	func.visit(*this);
+	return dependencies;
+}
+
+void DependencyCollector::visit(VariableReference &var)
+{
+	if(var.declaration && !locals.count(var.declaration))
+	{
+		dependencies.insert(var.declaration);
+		var.declaration->visit(*this);
+	}
+}
+
+void DependencyCollector::visit(InterfaceBlockReference &iface)
+{
+	if(iface.declaration)
+	{
+		dependencies.insert(iface.declaration);
+		iface.declaration->visit(*this);
+	}
+}
+
+void DependencyCollector::visit(FunctionCall &call)
+{
+	if(call.declaration)
+		dependencies.insert(call.declaration);
+	TraversingVisitor::visit(call);
+}
+
+void DependencyCollector::visit(VariableDeclaration &var)
+{
+	locals.insert(&var);
+	if(var.type_declaration)
+	{
+		dependencies.insert(var.type_declaration);
+		var.type_declaration->visit(*this);
+	}
+
+	TraversingVisitor::visit(var);
+}
+
 } // namespace SL
 } // namespace GL
 } // namespace Msp