basicFragmentShader.glsl 773 B

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  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. #version 120
  10. uniform sampler2D slideTexture;
  11. varying vec2 v_texturePosition;
  12. varying vec3 v_normal;
  13. void main() {
  14. vec3 lightVector = vec3(0.0, 0.0, 1.0);
  15. float light = max(dot(lightVector, v_normal), 0.0);
  16. vec4 fragment = texture2D(slideTexture, v_texturePosition);
  17. vec4 black = vec4(0.0, 0.0, 0.0, fragment.a);
  18. gl_FragColor = mix(black, fragment, light);
  19. }
  20. /* vim:set shiftwidth=4 softtabstop=4 expandtab: */