Method clean

src/main/java/field/graphics/Shader.java:111–197

()

			boolean good = false;
			Set<Integer> attachedTo = new LinkedHashSet<>();
		}

		protected boolean clean() {
			State s = GraphicsContext.get(this, () -> {
				State state = new State();
				state.source = source.get();
				return state;
			});

			if (!s.source.equals(this.source.get())) {

				System.out.println(" shader ("+type+") needs recompilation in context "+GraphicsContext.getContext()+" detatching from "+s.attachedTo);

				for (Integer ii : s.attachedTo)
					GL20.glDetachShader(ii, s.name);
				s.attachedTo.clear();
				GL20.glDeleteShader(s.name);

				s = new State();
				s.source = source.get();
				GraphicsContext.put(this, s);
			}

			final State finalS = s;
			Log.log("graphics.trace", () -> " shader name " + finalS.name);

			if (s.name == -1) {
				try {

//					System.out.println(" recompiling shader in context :"+GraphicsContext.getContext());

					Log.log("graphics.trace", () -> " creating shader");
					s.name = GL20.glCreateShader(type.gl);
					GL20.glShaderSource(s.name, s.source);

//					System.out.println(" shader source is "+s.source+" for name "+s.name);

					GL20.glCompileShader(s.name);
					status = GL20.glGetShaderi(s.name, GL20.GL_COMPILE_STATUS);
					Log.log("graphics.trace", () -> " shader compile status" + status);

					if (status == 0) {
						String ret = GL20.glGetShaderInfoLog(s.name, 10000);
						Log.log("graphics.error", () -> type + " program failed to compile");
						Log.log("graphics.error", () -> " log is <" + ret + ">");
						Log.log("graphics.error", () -> " shader source is <" + source + ">, reporting to <" + onError + ">");
						if (onError != null) {
							onError.beginError();
							String log = ret;
							String[] lines = log.split("\n");
							for (String ll : lines) {
								try {
									String[] ss = ll.split(":");
									if (ss.length > 2) {
										int ii = Integer.parseInt(ss[2])-1;
										onError.errorOnLine(ii, ll);
										break;
									}