X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fglsl%2Ffinalize.cpp;h=87e185024f3175c669a639dd14032b04e0cee79e;hp=3b0909ac2a90949733577e0e3a22dc0383cca445;hb=HEAD;hpb=569772f5aba5380a48002cd73b8d33eb25fd4048

diff --git a/source/glsl/finalize.cpp b/source/glsl/finalize.cpp
index 3b0909ac..469cb92d 100644
--- a/source/glsl/finalize.cpp
+++ b/source/glsl/finalize.cpp
@@ -91,6 +91,8 @@ void LocationAllocator::apply(Stage &stage)
 	stage.content.visit(*this);
 
 	allocate_locations("in");
+	if(stage.type==Stage::VERTEX)
+		swap(used_locations["in"], used_vertex_attribs);
 	allocate_locations("out");
 }
 
@@ -121,6 +123,8 @@ void LocationAllocator::allocate_locations(const string &iface)
 		if(!alloc_new)
 			continue;
 
+		bool flat = ((*i)->interpolation=="flat" || ((*i)->linked_declaration && (*i)->linked_declaration->interpolation=="flat"));
+
 		set<unsigned> &used = used_locations[(*i)->interface];
 
 		unsigned size = LocationCounter().apply(**i);
@@ -128,7 +132,7 @@ void LocationAllocator::allocate_locations(const string &iface)
 		{
 			int blocking = -1;
 			for(unsigned j=0; j<size; ++j)
-				if(used.count(next+j))
+				if(used.count(next+j) || (flat && used_vertex_attribs.count(next+j)))
 					blocking = next+j;
 			if(blocking<0)
 				break;
@@ -471,7 +475,14 @@ void StructuralFeatureConverter::visit(RefPtr<Expression> &expr)
 
 bool StructuralFeatureConverter::supports_stage(Stage::Type st) const
 {
-	if(st==Stage::GEOMETRY)
+	if(st==Stage::TESS_CONTROL || st==Stage::TESS_EVAL)
+	{
+		if(features.target_api==OPENGL_ES)
+			return check_version(Version(3, 20));
+		else
+			return check_version(Version(4, 0));
+	}
+	else if(st==Stage::GEOMETRY)
 	{
 		if(features.target_api==OPENGL_ES)
 			return check_version(Version(3, 20));