1/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ 2/* 3 * This file is part of the LibreOffice project. 4 * 5 * This Source Code Form is subject to the terms of the Mozilla Public 6 * License, v. 2.0. If a copy of the MPL was not distributed with this 7 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 8 */ 9 10#version 130 11 12uniform sampler2D slideTexture; 13varying float v_isShadow; 14varying vec2 v_texturePosition; 15varying vec3 v_normal; 16 17void main() { 18 vec3 lightVector = vec3(0.0, 0.0, 1.0); 19 float light = max(dot(lightVector, v_normal), 0.0); 20 vec4 fragment = texture2D(slideTexture, v_texturePosition); 21 vec4 black = vec4(0.0, 0.0, 0.0, fragment.a); 22 fragment = mix(black, fragment, light); 23 24 if (v_isShadow > 0.5) { 25 if (v_texturePosition.y > 1.0 - 0.3) 26 gl_FragColor = mix(fragment, vec4(0.0, 0.0, 0.0, 0.0), (1.0 - v_texturePosition.y) / 0.3); 27 else 28 discard; 29 } else { 30 gl_FragColor = fragment; 31 } 32} 33 34/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ 35