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annotate src/modules/image/wrap_CompressedData.cpp @ 1420:2a5ef265e040 image-CompressedData

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Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy. - added a new CompressedData type to love.image - added love.image.isCompressed(file or data) - love.graphics.newImage automatically tests for compression when loading a file - added love.graphics.isSupported strings for DXT, BC5, and BC7 Compressed textures meant to be used on the GPU offer huge performance gains when - loading the texture from a file - loading the texture from RAM to VRAM - loading mipmaps - rendering
author Alex Szpakowski <slime73@gmail.com>
date Thu, 04 Apr 2013 19:09:18 -0300
parents
children 5b9ebe6a9a7e
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rev   line source
1420
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
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1 /**
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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2 * Copyright (c) 2006-2013 LOVE Development Team
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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3 *
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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4 * This software is provided 'as-is', without any express or implied
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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5 * warranty. In no event will the authors be held liable for any damages
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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6 * arising from the use of this software.
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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7 *
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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8 * Permission is granted to anyone to use this software for any purpose,
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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9 * including commercial applications, and to alter it and redistribute it
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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10 * freely, subject to the following restrictions:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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11 *
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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12 * 1. The origin of this software must not be misrepresented; you must not
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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13 * claim that you wrote the original software. If you use this software
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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14 * in a product, an acknowledgment in the product documentation would be
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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15 * appreciated but is not required.
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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16 * 2. Altered source versions must be plainly marked as such, and must not be
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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17 * misrepresented as being the original software.
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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18 * 3. This notice may not be removed or altered from any source distribution.
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19 **/
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20
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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21 #include "wrap_CompressedData.h"
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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22 #include "common/wrap_Data.h"
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23
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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24 namespace love
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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25 {
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26 namespace image
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27 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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28
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29 CompressedData *luax_checkcompresseddata(lua_State *L, int idx)
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30 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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31 return luax_checktype<CompressedData>(L, idx, "CompressedData", IMAGE_COMPRESSED_DATA_T);
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32 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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33
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34 int w_CompressedData_getWidth(lua_State *L)
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35 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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36 CompressedData *t = luax_checkcompresseddata(L, 1);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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37 int miplevel = luaL_optinteger(L, 2, 1);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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38 int width = 0;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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39 try
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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40 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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41 width = t->getWidth(miplevel >= 1 ? miplevel - 1 : 0);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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42 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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43 catch (love::Exception &e)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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44 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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45 return luaL_error(L, "%s", e.what());
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46 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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47 lua_pushinteger(L, width);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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48 return 1;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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49 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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50
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51 int w_CompressedData_getHeight(lua_State *L)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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52 {
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53 CompressedData *t = luax_checkcompresseddata(L, 1);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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54 int miplevel = luaL_optinteger(L, 2, 1);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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55 int height = 0;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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56 try
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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57 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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58 height = t->getHeight(miplevel >= 1 ? miplevel - 1 : 0);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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59 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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60 catch (love::Exception &e)
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61 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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62 return luaL_error(L, "%s", e.what());
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63 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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64 lua_pushinteger(L, height);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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65 return 1;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
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66 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
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67
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68 int w_CompressedData_getDimensions(lua_State *L)
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69 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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70 CompressedData *t = luax_checkcompresseddata(L, 1);
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71 int miplevel = luaL_optinteger(L, 2, 1);
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72 int width = 0, height = 0;
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73 try
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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74 {
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75 width = t->getWidth(miplevel >= 1 ? miplevel - 1 : 0);
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76 height = t->getHeight(miplevel >= 1 ? miplevel - 1 : 0);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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77 }
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78 catch (love::Exception &e)
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79 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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80 return luaL_error(L, "%s", e.what());
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81 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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82 lua_pushinteger(L, width);
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83 lua_pushinteger(L, height);
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84 return 2;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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85 }
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86
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87 int w_CompressedData_getNumMipmaps(lua_State *L)
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88 {
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89 CompressedData *t = luax_checkcompresseddata(L, 1);
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90 lua_pushinteger(L, t->getNumMipmaps());
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91 return 1;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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92 }
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93
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94 int w_CompressedData_getType(lua_State *L)
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95 {
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96 CompressedData *t = luax_checkcompresseddata(L, 1);
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97
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98 image::CompressedData::TextureType type = t->getType();
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99 const char *str;
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100
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101 if (image::CompressedData::getConstant(type, str))
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102 lua_pushstring(L, str);
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103 else
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104 lua_pushstring(L, "unknown");
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105
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106 return 1;
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107 }
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108
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109 static const luaL_Reg functions[] =
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110 {
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111 // Data
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112 { "getPointer", w_Data_getPointer },
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113 { "getSize", w_Data_getSize },
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114
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115 { "getWidth", w_CompressedData_getWidth },
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116 { "getHeight", w_CompressedData_getHeight },
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117 { "getDimensions", w_CompressedData_getDimensions },
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118 { "getNumMipmaps", w_CompressedData_getNumMipmaps },
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119 { "getType", w_CompressedData_getType },
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120 { 0, 0 },
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121 };
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122
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123 extern "C" int luaopen_compresseddata(lua_State *L)
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124 {
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125 return luax_register_type(L, "CompressedData", functions);
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126 }
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127
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128 } // image
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129 } // love