From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 7 Nov 2021 09:21:35 +0000 (+0200)
Subject: Disallow bool variables in shader interface blocks
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=f4460c27a4d19ffb34017b92389420adad44d051

Disallow bool variables in shader interface blocks

Although OpenGL allows them in uniform blocks, SPIR-V says they can't be
used with externally visible storage classes.
---

diff --git a/source/glsl/validate.cpp b/source/glsl/validate.cpp
index 0c4b98cb..ec322f42 100644
--- a/source/glsl/validate.cpp
+++ b/source/glsl/validate.cpp
@@ -254,8 +254,13 @@ void DeclarationValidator::visit(VariableDeclaration &var)
 	}
 	else if(kind==BasicTypeDeclaration::VOID)
 		error(var, "Type 'void' not allowed on variable");
-	else if(kind==BasicTypeDeclaration::BOOL && !var.interface.empty() && var.source!=BUILTIN_SOURCE)
-		error(var, "Type 'bool' not allowed on interface variable");
+	else if(kind==BasicTypeDeclaration::BOOL && var.source!=BUILTIN_SOURCE)
+	{
+		if(scope==INTERFACE_BLOCK)
+			error(var, "Type 'bool' not allowed in an interface block");
+		else if(!var.interface.empty())
+			error(var, "Type 'bool' not allowed on interface variable");
+	}
 
 	if(var.init_expression)
 	{