Mercurial > sdl-ios-xcode
annotate include/SDL_pixels.h @ 1905:36d52b1f0504
Prefer the D3D renderer over GDI, at least for testing.
Added support for the SDL_VIDEO_RENDERER environment variable to pick the desired render driver.
Implemented WritePixels support for the D3D renderer.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 14 Jul 2006 08:22:45 +0000 |
parents | c121d94672cb |
children | a788656ca29a |
rev | line source |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 Sam Lantinga |
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4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
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9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Lesser General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 |
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23 /** |
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24 * \file SDL_pixels.h |
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25 * |
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26 * Header for the enumerated pixel format definitions |
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27 */ |
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28 |
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29 #ifndef _SDL_pixels_h |
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30 #define _SDL_pixels_h |
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31 |
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32 #include "begin_code.h" |
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33 /* Set up for C function definitions, even when using C++ */ |
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34 #ifdef __cplusplus |
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35 /* *INDENT-OFF* */ |
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36 extern "C" { |
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37 /* *INDENT-ON* */ |
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38 #endif |
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39 |
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40 enum |
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41 { /* Pixel type */ |
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42 SDL_PixelType_Unknown, |
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43 SDL_PixelType_Index1, |
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44 SDL_PixelType_Index4, |
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45 SDL_PixelType_Index8, |
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46 SDL_PixelType_Packed8, |
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47 SDL_PixelType_Packed16, |
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48 SDL_PixelType_Packed32, |
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49 SDL_PixelType_ArrayU8, |
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50 SDL_PixelType_ArrayU16, |
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51 SDL_PixelType_ArrayU32, |
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52 SDL_PixelType_ArrayF16, |
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53 SDL_PixelType_ArrayF32, |
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54 }; |
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55 |
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56 enum |
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57 { /* bitmap pixel order, high bit -> low bit */ |
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58 SDL_BitmapOrder_None, |
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59 SDL_BitmapOrder_4321, |
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60 SDL_BitmapOrder_1234, |
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61 }; |
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62 enum |
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63 { /* packed component order, high bit -> low bit */ |
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64 SDL_PackedOrder_None, |
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65 SDL_PackedOrder_XRGB, |
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66 SDL_PackedOrder_RGBX, |
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67 SDL_PackedOrder_ARGB, |
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68 SDL_PackedOrder_RGBA, |
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69 SDL_PackedOrder_XBGR, |
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70 SDL_PackedOrder_BGRX, |
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71 SDL_PackedOrder_ABGR, |
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72 SDL_PackedOrder_BGRA, |
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73 }; |
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74 enum |
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75 { /* array component order, low byte -> high byte */ |
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76 SDL_ArrayOrder_None, |
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77 SDL_ArrayOrder_RGB, |
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78 SDL_ArrayOrder_RGBA, |
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79 SDL_ArrayOrder_ARGB, |
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80 SDL_ArrayOrder_BGR, |
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81 SDL_ArrayOrder_BGRA, |
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82 SDL_ArrayOrder_ABGR, |
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83 }; |
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84 |
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85 enum |
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86 { /* Packed component layout */ |
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87 SDL_PackedLayout_None, |
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88 SDL_PackedLayout_332, |
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89 SDL_PackedLayout_4444, |
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90 SDL_PackedLayout_1555, |
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91 SDL_PackedLayout_5551, |
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92 SDL_PackedLayout_565, |
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93 SDL_PackedLayout_8888, |
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94 SDL_PackedLayout_2101010, |
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95 SDL_PackedLayout_1010102, |
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96 }; |
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97 |
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98 #define SDL_DEFINE_PIXELFOURCC(A, B, C, D) \ |
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99 ((A) | ((B) << 8) | ((C) << 16) | ((D) << 24)) |
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100 |
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101 #define SDL_DEFINE_PIXELFORMAT(type, order, layout, bits, bytes) \ |
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102 ((1 << 31) | ((type) << 24) | ((order) << 20) | ((layout) << 16) | \ |
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103 ((bits) << 8) | ((bytes) << 0)) |
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104 |
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105 #define SDL_PIXELTYPE(X) (((X) >> 24) & 0x0F) |
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106 #define SDL_PIXELORDER(X) (((X) >> 20) & 0x0F) |
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107 #define SDL_PIXELLAYOUT(X) (((X) >> 16) & 0x0F) |
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108 #define SDL_BITSPERPIXEL(X) (((X) >> 8) & 0xFF) |
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109 #define SDL_BYTESPERPIXEL(X) (((X) >> 0) & 0xFF) |
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110 |
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111 #define SDL_ISPIXELFORMAT_INDEXED(format) \ |
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112 ((SDL_PIXELTYPE(format) == SDL_PixelType_Index1) || \ |
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113 (SDL_PIXELTYPE(format) == SDL_PixelType_Index4) || \ |
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114 (SDL_PIXELTYPE(format) == SDL_PixelType_Index8)) |
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115 |
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116 #define SDL_ISPIXELFORMAT_FOURCC(format) \ |
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117 ((format) && !((format) & 0x80000000)) |
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118 |
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119 enum |
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120 { |
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121 SDL_PixelFormat_Unknown, |
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122 SDL_PixelFormat_Index1LSB = |
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123 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index1, SDL_BitmapOrder_1234, 0, |
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124 1, 0), |
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125 SDL_PixelFormat_Index1MSB = |
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126 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index1, SDL_BitmapOrder_4321, 0, |
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127 1, 0), |
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128 SDL_PixelFormat_Index4LSB = |
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129 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index4, SDL_BitmapOrder_1234, 0, |
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130 2, 0), |
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131 SDL_PixelFormat_Index4MSB = |
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132 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index4, SDL_BitmapOrder_4321, 0, |
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133 2, 0), |
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134 SDL_PixelFormat_Index8 = |
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135 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index8, 0, 0, 8, 1), |
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136 SDL_PixelFormat_RGB332 = |
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137 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed8, SDL_PackedOrder_XRGB, |
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138 SDL_PackedLayout_332, 8, 1), |
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139 SDL_PixelFormat_RGB444 = |
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140 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_XRGB, |
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141 SDL_PackedLayout_4444, 12, 2), |
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142 SDL_PixelFormat_RGB555 = |
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143 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_XRGB, |
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144 SDL_PackedLayout_1555, 15, 2), |
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145 SDL_PixelFormat_ARGB4444 = |
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146 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_ARGB, |
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147 SDL_PackedLayout_4444, 16, 2), |
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148 SDL_PixelFormat_ARGB1555 = |
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149 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_ARGB, |
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150 SDL_PackedLayout_1555, 16, 2), |
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151 SDL_PixelFormat_RGB565 = |
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152 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_XRGB, |
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153 SDL_PackedLayout_565, 16, 2), |
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154 SDL_PixelFormat_RGB24 = |
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155 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_ArrayU8, SDL_ArrayOrder_RGB, 0, |
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156 24, 3), |
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157 SDL_PixelFormat_BGR24 = |
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158 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_ArrayU8, SDL_ArrayOrder_BGR, 0, |
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159 24, 3), |
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160 SDL_PixelFormat_RGB888 = |
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161 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed32, SDL_PackedOrder_XRGB, |
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162 SDL_PackedLayout_8888, 24, 4), |
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163 SDL_PixelFormat_BGR888 = |
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164 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed32, SDL_PackedOrder_XBGR, |
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165 SDL_PackedLayout_8888, 24, 4), |
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166 SDL_PixelFormat_ARGB8888 = |
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167 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed32, SDL_PackedOrder_ARGB, |
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168 SDL_PackedLayout_8888, 32, 4), |
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169 SDL_PixelFormat_RGBA8888 = |
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170 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed32, SDL_PackedOrder_RGBA, |
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171 SDL_PackedLayout_8888, 32, 4), |
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172 SDL_PixelFormat_ABGR8888 = |
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173 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed32, SDL_PackedOrder_ABGR, |
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174 SDL_PackedLayout_8888, 32, 4), |
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175 SDL_PixelFormat_BGRA8888 = |
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176 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed32, SDL_PackedOrder_BGRA, |
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177 SDL_PackedLayout_8888, 32, 4), |
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178 SDL_PixelFormat_ARGB2101010 = |
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179 SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed32, SDL_PackedOrder_ARGB, |
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180 SDL_PackedLayout_2101010, 32, 4), |
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181 |
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182 SDL_PixelFormat_YV12 = /* Planar mode: Y + V + U (3 planes) */ |
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183 SDL_DEFINE_PIXELFOURCC('Y', 'V', '1', '2'), |
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184 SDL_PixelFormat_IYUV = /* Planar mode: Y + U + V (3 planes) */ |
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185 SDL_DEFINE_PIXELFOURCC('I', 'Y', 'U', 'V'), |
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186 SDL_PixelFormat_YUY2 = /* Packed mode: Y0+U0+Y1+V0 (1 plane) */ |
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187 SDL_DEFINE_PIXELFOURCC('Y', 'U', 'Y', '2'), |
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188 SDL_PixelFormat_UYVY = /* Packed mode: U0+Y0+V0+Y1 (1 plane) */ |
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189 SDL_DEFINE_PIXELFOURCC('U', 'Y', 'V', 'Y'), |
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190 SDL_PixelFormat_YVYU = /* Packed mode: Y0+V0+Y1+U0 (1 plane) */ |
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191 SDL_DEFINE_PIXELFOURCC('Y', 'V', 'Y', 'U'), |
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192 }; |
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193 |
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194 typedef struct SDL_Color |
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195 { |
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196 Uint8 r; |
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197 Uint8 g; |
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198 Uint8 b; |
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199 Uint8 unused; |
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200 } SDL_Color; |
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201 #define SDL_Colour SDL_Color |
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202 |
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203 typedef struct SDL_Palette SDL_Palette; |
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204 typedef int (*SDL_PaletteChangedFunc) (void *userdata, SDL_Palette * palette); |
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205 |
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206 typedef struct SDL_PaletteWatch |
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207 { |
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208 SDL_PaletteChangedFunc callback; |
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209 void *userdata; |
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210 struct SDL_PaletteWatch *next; |
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211 } SDL_PaletteWatch; |
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212 |
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213 struct SDL_Palette |
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214 { |
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215 int ncolors; |
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216 SDL_Color *colors; |
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217 |
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218 int refcount; |
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219 SDL_PaletteWatch *watch; |
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220 }; |
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221 |
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222 /* Everything in the pixel format structure is read-only */ |
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223 typedef struct SDL_PixelFormat |
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224 { |
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225 SDL_Palette *palette; |
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226 Uint8 BitsPerPixel; |
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227 Uint8 BytesPerPixel; |
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228 Uint8 Rloss; |
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229 Uint8 Gloss; |
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230 Uint8 Bloss; |
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231 Uint8 Aloss; |
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232 Uint8 Rshift; |
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233 Uint8 Gshift; |
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234 Uint8 Bshift; |
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235 Uint8 Ashift; |
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236 Uint32 Rmask; |
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237 Uint32 Gmask; |
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238 Uint32 Bmask; |
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239 Uint32 Amask; |
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240 |
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241 /* RGB color key information */ |
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242 Uint32 colorkey; |
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243 /* Alpha value information (per-surface alpha) */ |
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244 Uint8 alpha; |
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245 } SDL_PixelFormat; |
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246 |
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247 /** |
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248 * \fn SDL_bool SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask, Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask) |
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249 * |
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250 * \brief Convert one of the enumerated pixel formats to a bpp and RGBA masks. |
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251 * |
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252 * \return SDL_TRUE, or SDL_FALSE if the conversion wasn't possible. |
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253 * |
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254 * \sa SDL_MasksToPixelFormatEnum() |
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255 */ |
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256 extern DECLSPEC SDL_bool SDLCALL SDL_PixelFormatEnumToMasks(Uint32 format, |
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257 int *bpp, |
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258 Uint32 * Rmask, |
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259 Uint32 * Gmask, |
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260 Uint32 * Bmask, |
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261 Uint32 * Amask); |
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262 |
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263 /** |
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264 * \fn Uint32 SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask) |
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265 * |
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266 * \brief Convert a bpp and RGBA masks to an enumerated pixel format. |
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267 * |
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268 * \return The pixel format, or SDL_PixelFormat_Unknown if the conversion wasn't possible. |
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269 * |
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270 * \sa SDL_PixelFormatEnumToMasks() |
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271 */ |
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272 extern DECLSPEC Uint32 SDLCALL SDL_MasksToPixelFormatEnum(int bpp, |
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273 Uint32 Rmask, |
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274 Uint32 Gmask, |
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275 Uint32 Bmask, |
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276 Uint32 Amask); |
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277 |
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278 /** |
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279 * \fn SDL_Palette *SDL_AllocPalette(int ncolors) |
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280 * |
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281 * \brief Create a palette structure with the specified number of color entries. |
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282 * |
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283 * \return A new palette, or NULL if there wasn't enough memory |
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284 * |
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285 * \note The palette entries are initialized to white. |
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286 * |
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287 * \sa SDL_FreePalette() |
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288 */ |
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289 extern DECLSPEC SDL_Palette *SDLCALL SDL_AllocPalette(int ncolors); |
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290 |
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291 /** |
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292 * \fn int SDL_AddPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata) |
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293 * |
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294 * \brief Add a callback function which is called when the palette changes. |
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295 * |
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296 * \sa SDL_DelPaletteWatch() |
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297 */ |
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298 extern DECLSPEC int SDLCALL SDL_AddPaletteWatch(SDL_Palette * palette, |
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299 SDL_PaletteChangedFunc |
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300 callback, void *userdata); |
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301 |
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302 /** |
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303 * \fn void SDL_DelPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata) |
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304 * |
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305 * \brief Remove a callback function previously added with SDL_AddPaletteWatch() |
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306 * |
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307 * \sa SDL_AddPaletteWatch() |
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308 */ |
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309 extern DECLSPEC void SDLCALL SDL_DelPaletteWatch(SDL_Palette * palette, |
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310 SDL_PaletteChangedFunc |
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311 callback, void *userdata); |
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312 |
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313 /** |
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314 * \fn int SDL_SetPaletteColors(SDL_Palette *palette, const SDL_Colors *colors, int firstcolor, int numcolors) |
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315 * |
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316 * \brief Set a range of colors in a palette. |
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317 * |
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318 * \param palette The palette to modify |
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319 * \param colors An array of colors to copy into the palette |
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320 * \param firstcolor The index of the first palette entry to modify |
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321 * \param ncolors The number of entries to modify |
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322 * |
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323 * \return 0 on success, or -1 if not all of the colors could be set |
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324 */ |
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325 extern DECLSPEC int SDLCALL SDL_SetPaletteColors(SDL_Palette * palette, |
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326 const SDL_Color * colors, |
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327 int firstcolor, int ncolors); |
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328 |
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329 /** |
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330 * \fn void SDL_FreePalette(SDL_Palette *palette) |
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331 * |
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332 * \brief Free a palette created with SDL_AllocPalette() |
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333 * |
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334 * \sa SDL_AllocPalette() |
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335 */ |
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336 extern DECLSPEC void SDLCALL SDL_FreePalette(SDL_Palette * palette); |
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337 |
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338 /* Ends C function definitions when using C++ */ |
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339 #ifdef __cplusplus |
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340 /* *INDENT-OFF* */ |
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341 } |
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342 /* *INDENT-ON* */ |
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343 #endif |
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344 #include "close_code.h" |
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345 |
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346 #endif /* _SDL_pixels_h */ |
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347 |
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348 /* vi: set ts=4 sw=4 expandtab: */ |