X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fprogramcompiler.cpp;h=1a3cd34fae5067201f81dabf8ffcdf76121b0d59;hp=5bb84269f30abe4fcd38198cef0b6a2ae416b2f8;hb=4691b76467eadabfb0a7e810b12fe858a36ad519;hpb=f14516331a9b98b1d9d6c9c4e44787167f87a813

diff --git a/source/programcompiler.cpp b/source/programcompiler.cpp
index 5bb84269..1a3cd34f 100644
--- a/source/programcompiler.cpp
+++ b/source/programcompiler.cpp
@@ -460,6 +460,8 @@ void ProgramCompiler::Formatter::visit(VariableDeclaration &var)
 	}
 	if(var.constant)
 		formatted += "const ";
+	if(!var.interpolation.empty())
+		formatted += format("%s ", var.interpolation);
 	if(!var.sampling.empty())
 		formatted += format("%s ", var.sampling);
 	if(!var.interface.empty() && var.interface!=block_interface)
@@ -1198,12 +1200,14 @@ void ProgramCompiler::FunctionInliner::visit(Return &ret)
 
 ProgramCompiler::ExpressionEvaluator::ExpressionEvaluator():
 	variable_values(0),
+	const_only(false),
 	result(0.0f),
 	result_valid(false)
 { }
 
-ProgramCompiler::ExpressionEvaluator::ExpressionEvaluator(const ValueMap &v):
-	variable_values(&v),
+ProgramCompiler::ExpressionEvaluator::ExpressionEvaluator(const ValueMap *v, bool c):
+	variable_values(v),
+	const_only(c),
 	result(0.0f),
 	result_valid(false)
 { }
@@ -1228,6 +1232,8 @@ void ProgramCompiler::ExpressionEvaluator::visit(VariableReference &var)
 {
 	if(!var.declaration)
 		return;
+	if(const_only && !var.declaration->constant)
+		return;
 
 	if(variable_values)
 	{
@@ -1287,7 +1293,8 @@ void ProgramCompiler::ExpressionEvaluator::visit(BinaryExpression &binary)
 
 
 ProgramCompiler::ConstantConditionEliminator::ConstantConditionEliminator():
-	scope_level(0)
+	scope_level(0),
+	in_loop(false)
 { }
 
 void ProgramCompiler::ConstantConditionEliminator::visit(Block &block)
@@ -1312,7 +1319,7 @@ void ProgramCompiler::ConstantConditionEliminator::visit(VariableDeclaration &va
 
 void ProgramCompiler::ConstantConditionEliminator::visit(Conditional &cond)
 {
-	ExpressionEvaluator eval(variable_values);
+	ExpressionEvaluator eval(&variable_values, in_loop);
 	cond.condition->visit(eval);
 	if(eval.result_valid)
 		flatten_block(eval.result ? cond.body : cond.else_body);
@@ -1322,9 +1329,10 @@ void ProgramCompiler::ConstantConditionEliminator::visit(Conditional &cond)
 
 void ProgramCompiler::ConstantConditionEliminator::visit(Iteration &iter)
 {
+	// XXX Should this not visit init_statement first?
 	if(iter.condition)
 	{
-		ExpressionEvaluator eval;
+		ExpressionEvaluator eval(0, in_loop);
 		iter.condition->visit(eval);
 		if(eval.result_valid && !eval.result)
 		{
@@ -1333,6 +1341,7 @@ void ProgramCompiler::ConstantConditionEliminator::visit(Iteration &iter)
 		}
 	}
 
+	SetFlag set_loop(in_loop);
 	TraversingVisitor::visit(iter);
 }
 
@@ -1763,6 +1772,22 @@ bool ProgramCompiler::LegacyConverter::supports_interface_layouts() const
 		return check_version(Version(3, 30));
 }
 
+bool ProgramCompiler::LegacyConverter::supports_centroid_sampling() const
+{
+	if(target_api==OPENGL_ES2)
+		return check_version(Version(3, 0));
+	else
+		return check_version(Version(1, 20));
+}
+
+bool ProgramCompiler::LegacyConverter::supports_sample_sampling() const
+{
+	if(target_api==OPENGL_ES2)
+		return check_version(Version(3, 20));
+	else
+		return check_version(Version(4, 0));
+}
+
 void ProgramCompiler::LegacyConverter::visit(VariableDeclaration &var)
 {
 	if(var.layout && !supports_interface_layouts())
@@ -1790,6 +1815,17 @@ void ProgramCompiler::LegacyConverter::visit(VariableDeclaration &var)
 		}
 	}
 
+	if(var.sampling=="centroid")
+	{
+		if(!supports_centroid_sampling())
+			var.sampling = string();
+	}
+	else if(var.sampling=="sample")
+	{
+		if(!supports_sample_sampling())
+			var.sampling = string();
+	}
+
 	if((var.interface=="in" || var.interface=="out") && !supports_unified_interface_syntax())
 	{
 		if(stage->type==FRAGMENT && var.interface=="out")