1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
3 * This file is part of the LibreOffice project.
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/.
12 #define M_PI 3.1415926535897932384626433832795
14 uniform sampler2D leavingSlideTexture;
15 uniform sampler2D enteringSlideTexture;
16 varying vec2 v_texturePosition;
17 varying vec3 v_normal;
23 vec3 lightVector = vec3(0.0, 0.0, 1.0);
24 float light = dot(lightVector, v_normal);
28 fragment = texture2D(leavingSlideTexture, v_texturePosition);
30 fragment = texture2D(enteringSlideTexture, v_texturePosition);
32 vec4 black = vec4(0.0, 0.0, 0.0, fragment.a);
33 gl_FragColor = mix(black, fragment, max(light, 0.0));
36 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */