Added gl_PerVertex output blocks

data/shaders/occlusionquery/mesh.vert

@@ -21,6 +21,11 @@ layout (location = 2) out float outVisible;
 layout (location = 3) out vec3 outViewVec;
 layout (location = 4) out vec3 outLightVec;
 
+out gl_PerVertex
+{
+	vec4 gl_Position;
+};
+
 void main() 
 {
 	outNormal = inNormal;

data/shaders/occlusionquery/occluder.vert

@@ -16,6 +16,11 @@ layout (binding = 0) uniform UBO
 
 layout (location = 0) out vec3 outColor;
 
+out gl_PerVertex
+{
+	vec4 gl_Position;
+};
+
 void main() 
 {
 	outColor = inColor;

data/shaders/occlusionquery/simple.vert

@@ -14,6 +14,11 @@ layout (binding = 0) uniform UBO
 
 layout (location = 0) out vec3 outColor;
 
+out gl_PerVertex
+{
+	vec4 gl_Position;
+};
+
 void main() 
 {
 	gl_Position = ubo.projection * ubo.modelview * vec4(inPos.xyz, 1.0);