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annotate ext/guichan-0.8.1/include/guichan/opengl/openglallegroimageloader.hpp @ 14:3a7f83ccbc28

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* Modified map layers so the player character should be able to walk diagonally now as well * However he does not! looks like a pather issue
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 06 Jul 2008 22:03:52 +0000
parents 4a0efb7baf70
children
rev   line source
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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1 /* _______ __ __ __ ______ __ __ _______ __ __
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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2 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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3 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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4 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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5 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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6 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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7 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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8 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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9 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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10 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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11 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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12 * Per Larsson a.k.a finalman
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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13 * Olof Naessén a.k.a jansem/yakslem
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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14 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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15 * Visit: http://guichan.sourceforge.net
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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16 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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17 * License: (BSD)
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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18 * Redistribution and use in source and binary forms, with or without
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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19 * modification, are permitted provided that the following conditions
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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20 * are met:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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21 * 1. Redistributions of source code must retain the above copyright
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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22 * notice, this list of conditions and the following disclaimer.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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23 * 2. Redistributions in binary form must reproduce the above copyright
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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24 * notice, this list of conditions and the following disclaimer in
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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25 * the documentation and/or other materials provided with the
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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26 * distribution.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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27 * 3. Neither the name of Guichan nor the names of its contributors may
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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28 * be used to endorse or promote products derived from this software
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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29 * without specific prior written permission.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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30 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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37 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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38 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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39 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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40 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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41 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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42 */
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43
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44 #ifndef GCN_OPENGLALLEGROIMAGELOADER_HPP
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45 #define GCN_OPENGLALLEGROIMAGELOADER_HPP
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46
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47 #include <allegro.h>
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48 #include <alleggl.h>
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49
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50 #include <guichan/imageloader.hpp>
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51 #include <guichan/exception.hpp>
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52 #include <guichan/opengl/openglimage.hpp>
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53
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54 namespace gcn
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55 {
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56 /**
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57 * OpenGL ImageLoader that loads images with Allegro.
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58 */
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59 class OpenGLAllegroImageLoader : public ImageLoader
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60 {
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61 public:
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62
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63 // Inherited from ImageLoader
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64
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65 virtual Image* load(const std::string& filename,
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66 bool convertToDisplayFormat = true)
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67
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68 {
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69 BITMAP *bmp = load_bitmap(filename.c_str(), NULL);
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70
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71 if (bmp == NULL)
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72 {
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73 throw GCN_EXCEPTION(
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74 std::string("Unable to load image file: ") + filename);
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75 }
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76
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77 int bitmapBpp = bitmap_color_depth(bmp);
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78
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79 // As a BITMAP without an alpha channel in Allegro has
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80 // all it's alpha values set to zero we have to check
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81 // if the BITMAP has an alpha channel. If no alpha channel
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82 // exists then we need to change the alpha values to 255
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83 // before creating the OpenGL image.
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84 bool hasAlphaChannel = false;
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85 int x, y;
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86 for (y = 0; y < bmp->h; y++)
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87 {
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88 for (x = 0; x < bmp->w; x++)
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89 {
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90 int pixel = getpixel(bmp, x, y);
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91 if (geta_depth(bitmapBpp, pixel) != 0)
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92 {
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93 hasAlphaChannel = true;
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94 }
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95 }
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96 }
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97
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98 unsigned int *pixels = new unsigned int[bmp->w * bmp->h];
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99
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100 for (y = 0; y < bmp->h; y++)
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101 {
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102 for (x = 0; x < bmp->w; x++)
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103 {
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104 int pixel = getpixel(bmp,x, y);
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105
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106 if (!hasAlphaChannel)
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107 {
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108 pixels[x + y * bmp->w] = pixel | 0xff000000;
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109 }
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110 else
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111 {
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112 pixels[x + y * bmp->w] = pixel;
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113 }
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114 }
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115 }
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116
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117 OpenGLImage *image = new OpenGLImage(pixels,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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118 bmp->w,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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119 bmp->h,
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120 convertToDisplayFormat);
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121
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122 delete[] pixels;
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123 destroy_bitmap(bmp);
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124
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125 return image;
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126 }
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127 };
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128 }
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129
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130 #endif // end GCN_OPENGLALLEGROIMAGELOADER_HPP