- removed the 'layout' qualifier from the uniform buffer declaration. It's not really needed because the layout of a single vec4 array cannot possibly change, and Intel drivers are complaining for unknown reasons.

wadsrc/static/shaders/glsl/main.fp

@@ -12,7 +12,7 @@ out vec4 FragColor;
 		vec4 lights[];
 	};
 #else
-	layout(std140) uniform LightBufferUBO
+	/*layout(std140)*/ uniform LightBufferUBO
 	{
 		vec4 lights[NUM_UBO_LIGHTS];
 	};