EVOLUTION-MANAGER

Edit File: invert50FragmentShader.glsl

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #version 130 /*precision mediump float;*/ void main() { vec2 tex_mod = mod(gl_FragCoord, 2).xy; bool bLeft = (tex_mod.x > 0.0) && (tex_mod.x < 1.0); bool bTop = (tex_mod.y > 0.0) && (tex_mod.y < 1.0); // horrors - where is the XOR operator ? if ((bTop && bLeft) || (!bTop && !bLeft)) gl_FragColor = vec4(255,255,255,0); else gl_FragColor = vec4(0,0,0,0); } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */