Method addSource

src/main/java/field/graphics/Shader.java:215–219

(Type type, Supplier<String> source)

		s.name = GL20.glCreateProgram();
		return s;
	}

	public Source addSource(Type type, Supplier<String> source) {
		Source s = new Source(source, type);
		this.source.put(type, s);
		return s;
	}