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graphics.cpp 2.3KB

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  1. /* The MIT License
  2. *
  3. * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
  4. *
  5. * Permission is hereby granted, free of charge, to any person obtaining a copy
  6. * of this software and associated documentation files (the "Software"), to deal
  7. * in the Software without restriction, including without limitation the rights
  8. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  9. * copies of the Software, and to permit persons to whom the Software is
  10. * furnished to do so, subject to the following conditions:
  11. *
  12. * The above copyright notice and this permission notice shall be included in
  13. * all copies or substantial portions of the Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21. * THE SOFTWARE.
  22. */
  23. #include "graphics.h"
  24. #include "logger.h"
  25. #include <GL/gl.h>
  26. #include <GL/glu.h>
  27. Graphics g_graphics;
  28. Graphics::Graphics()
  29. {
  30. }
  31. Graphics::~Graphics()
  32. {
  33. }
  34. void Graphics::init()
  35. {
  36. // setup opengl
  37. glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // black background
  38. glEnable(GL_ALPHA_TEST); // enable alpha
  39. glAlphaFunc(GL_GREATER, 0.0f); // default alpha mode
  40. glDisable(GL_DEPTH_TEST); // we are rendering 2D only, we don't need it
  41. notice("GPU %s", (const char*)glGetString(GL_RENDERER));
  42. notice("OpenGL %s", (const char*)glGetString(GL_VERSION));
  43. }
  44. void Graphics::terminate()
  45. {
  46. }
  47. void Graphics::resize(int width, int height)
  48. {
  49. // resize gl viewport
  50. glViewport(0, 0, width, height);
  51. /*
  52. 0,0---------0,w
  53. | |
  54. | |
  55. | |
  56. h,0---------h,w
  57. */
  58. // setup view region like above
  59. glMatrixMode(GL_PROJECTION);
  60. glLoadIdentity();
  61. gluOrtho2D(0.0f, width, height, 0.0f);
  62. // back to model view
  63. glMatrixMode(GL_MODELVIEW);
  64. glLoadIdentity();
  65. }
  66. void Graphics::beginRender()
  67. {
  68. glClear(GL_COLOR_BUFFER_BIT);
  69. glLoadIdentity();
  70. }
  71. void Graphics::endRender()
  72. {
  73. }