annotate include/SDL_pixels.h @ 2884:9dde605c7540

Date: Fri, 19 Dec 2008 20:17:35 +0100 From: Couriersud Subject: Re: Aw: Experience using SDL1.3 in sdlmame/Proposal for api additions > For consistency you'd probably want: > SDL_SetRenderDrawColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a); > SDL_SetRenderDrawBlendMode(SDL_BlendMode blendMode); > SDL_RenderLine(int x1, int y1, int x2, int y2); > SDL_RenderFill(SDL_Rect *rect); > > You probably also want to add API functions query the current state. > I have implemented the above api for the opengl, x11, directfb and software renderers. I have also renamed *TEXTUREBLENDMODE* constants to BLENDMODE*. The unix build compiles. The windows renderer still needs to be updated, but I have no windows development machine at hand. Have a look at the x11 renderer for a sample. Vector games now run at 90% both on opengl and directfb in comparison to sdlmame's own opengl renderer. The same applies to raster games. The diff also includes a) Changed XDrawRect to XFillRect in x11 renderer b) A number of changes to fix blending and modulation issues in the directfb renderer.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 20 Dec 2008 12:00:00 +0000
parents 99210400e8b9
children 8d93bfecb9dc
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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99210400e8b9 Updated copyright date
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3 Copyright (C) 1997-2009 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 /* Transparency definitions: These define alpha as the opacity of a surface */
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41 #define SDL_ALPHA_OPAQUE 255
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42 #define SDL_ALPHA_TRANSPARENT 0
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43
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44 enum
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45 { /* Pixel type */
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46 SDL_PIXELTYPE_UNKNOWN,
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47 SDL_PIXELTYPE_INDEX1,
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48 SDL_PIXELTYPE_INDEX4,
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49 SDL_PIXELTYPE_INDEX8,
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50 SDL_PIXELTYPE_PACKED8,
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51 SDL_PIXELTYPE_PACKED16,
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52 SDL_PIXELTYPE_PACKED32,
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53 SDL_PIXELTYPE_ARRAYU8,
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54 SDL_PIXELTYPE_ARRAYU16,
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55 SDL_PIXELTYPE_ARRAYU32,
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56 SDL_PIXELTYPE_ARRAYF16,
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57 SDL_PIXELTYPE_ARRAYF32
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58 };
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59
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60 enum
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61 { /* bitmap pixel order, high bit -> low bit */
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62 SDL_BITMAPORDER_NONE,
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63 SDL_BITMAPORDER_4321,
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64 SDL_BITMAPORDER_1234
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65 };
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66 enum
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67 { /* packed component order, high bit -> low bit */
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68 SDL_PACKEDORDER_NONE,
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69 SDL_PACKEDORDER_XRGB,
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70 SDL_PACKEDORDER_RGBX,
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71 SDL_PACKEDORDER_ARGB,
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72 SDL_PACKEDORDER_RGBA,
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73 SDL_PACKEDORDER_XBGR,
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74 SDL_PACKEDORDER_BGRX,
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75 SDL_PACKEDORDER_ABGR,
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76 SDL_PACKEDORDER_BGRA
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77 };
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78 enum
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79 { /* array component order, low byte -> high byte */
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80 SDL_ARRAYORDER_NONE,
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81 SDL_ARRAYORDER_RGB,
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82 SDL_ARRAYORDER_RGBA,
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83 SDL_ARRAYORDER_ARGB,
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84 SDL_ARRAYORDER_BGR,
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85 SDL_ARRAYORDER_BGRA,
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86 SDL_ARRAYORDER_ABGR
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87 };
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88
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89 enum
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90 { /* Packed component layout */
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91 SDL_PACKEDLAYOUT_NONE,
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92 SDL_PACKEDLAYOUT_332,
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93 SDL_PACKEDLAYOUT_4444,
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94 SDL_PACKEDLAYOUT_1555,
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95 SDL_PACKEDLAYOUT_5551,
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96 SDL_PACKEDLAYOUT_565,
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97 SDL_PACKEDLAYOUT_8888,
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98 SDL_PACKEDLAYOUT_2101010,
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99 SDL_PACKEDLAYOUT_1010102
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100 };
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101
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102 #define SDL_DEFINE_PIXELFOURCC(A, B, C, D) \
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103 ((A) | ((B) << 8) | ((C) << 16) | ((D) << 24))
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104
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105 #define SDL_DEFINE_PIXELFORMAT(type, order, layout, bits, bytes) \
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106 ((1 << 31) | ((type) << 24) | ((order) << 20) | ((layout) << 16) | \
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107 ((bits) << 8) | ((bytes) << 0))
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108
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109 #define SDL_PIXELTYPE(X) (((X) >> 24) & 0x0F)
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110 #define SDL_PIXELORDER(X) (((X) >> 20) & 0x0F)
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111 #define SDL_PIXELLAYOUT(X) (((X) >> 16) & 0x0F)
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112 #define SDL_BITSPERPIXEL(X) (((X) >> 8) & 0xFF)
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113 #define SDL_BYTESPERPIXEL(X) (((X) >> 0) & 0xFF)
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114
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115 #define SDL_ISPIXELFORMAT_INDEXED(format) \
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116 ((SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX1) || \
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117 (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX4) || \
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118 (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX8))
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119
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120 #define SDL_ISPIXELFORMAT_FOURCC(format) \
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121 ((format) && !((format) & 0x80000000))
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122
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123 enum
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124 {
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125 SDL_PIXELFORMAT_UNKNOWN,
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126 SDL_PIXELFORMAT_INDEX1LSB =
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127 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_1234, 0,
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128 1, 0),
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129 SDL_PIXELFORMAT_INDEX1MSB =
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130 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_4321, 0,
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131 1, 0),
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132 SDL_PIXELFORMAT_INDEX4LSB =
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133 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_1234, 0,
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134 2, 0),
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135 SDL_PIXELFORMAT_INDEX4MSB =
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136 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_4321, 0,
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137 2, 0),
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138 SDL_PIXELFORMAT_INDEX8 =
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139 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX8, 0, 0, 8, 1),
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140 SDL_PIXELFORMAT_RGB332 =
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141 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED8, SDL_PACKEDORDER_XRGB,
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142 SDL_PACKEDLAYOUT_332, 8, 1),
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143 SDL_PIXELFORMAT_RGB444 =
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144 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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145 SDL_PACKEDLAYOUT_4444, 12, 2),
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146 SDL_PIXELFORMAT_RGB555 =
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147 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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148 SDL_PACKEDLAYOUT_1555, 15, 2),
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149 SDL_PIXELFORMAT_BGR555 =
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150 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XBGR,
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151 SDL_PACKEDLAYOUT_1555, 15, 2),
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152 SDL_PIXELFORMAT_ARGB4444 =
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153 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB,
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154 SDL_PACKEDLAYOUT_4444, 16, 2),
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155 SDL_PIXELFORMAT_ARGB1555 =
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156 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB,
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157 SDL_PACKEDLAYOUT_1555, 16, 2),
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158 SDL_PIXELFORMAT_ABGR1555 =
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159 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ABGR,
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160 SDL_PACKEDLAYOUT_1555, 16, 2),
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161 SDL_PIXELFORMAT_RGB565 =
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162 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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163 SDL_PACKEDLAYOUT_565, 16, 2),
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164 SDL_PIXELFORMAT_RGB24 =
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165 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_RGB, 0,
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166 24, 3),
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167 SDL_PIXELFORMAT_BGR24 =
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168 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_BGR, 0,
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169 24, 3),
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170 SDL_PIXELFORMAT_RGB888 =
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171 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XRGB,
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172 SDL_PACKEDLAYOUT_8888, 24, 4),
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173 SDL_PIXELFORMAT_BGR888 =
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diff changeset
174 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XBGR,
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175 SDL_PACKEDLAYOUT_8888, 24, 4),
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176 SDL_PIXELFORMAT_ARGB8888 =
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177 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB,
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178 SDL_PACKEDLAYOUT_8888, 32, 4),
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179 SDL_PIXELFORMAT_RGBA8888 =
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180 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_RGBA,
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181 SDL_PACKEDLAYOUT_8888, 32, 4),
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182 SDL_PIXELFORMAT_ABGR8888 =
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183 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ABGR,
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184 SDL_PACKEDLAYOUT_8888, 32, 4),
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185 SDL_PIXELFORMAT_BGRA8888 =
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diff changeset
186 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_BGRA,
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187 SDL_PACKEDLAYOUT_8888, 32, 4),
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188 SDL_PIXELFORMAT_ARGB2101010 =
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diff changeset
189 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB,
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190 SDL_PACKEDLAYOUT_2101010, 32, 4),
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191
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192 SDL_PIXELFORMAT_YV12 = /* Planar mode: Y + V + U (3 planes) */
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193 SDL_DEFINE_PIXELFOURCC('Y', 'V', '1', '2'),
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194 SDL_PIXELFORMAT_IYUV = /* Planar mode: Y + U + V (3 planes) */
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195 SDL_DEFINE_PIXELFOURCC('I', 'Y', 'U', 'V'),
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196 SDL_PIXELFORMAT_YUY2 = /* Packed mode: Y0+U0+Y1+V0 (1 plane) */
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197 SDL_DEFINE_PIXELFOURCC('Y', 'U', 'Y', '2'),
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198 SDL_PIXELFORMAT_UYVY = /* Packed mode: U0+Y0+V0+Y1 (1 plane) */
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199 SDL_DEFINE_PIXELFOURCC('U', 'Y', 'V', 'Y'),
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200 SDL_PIXELFORMAT_YVYU = /* Packed mode: Y0+V0+Y1+U0 (1 plane) */
2208
b03710fb0333 Fixed bug #467
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201 SDL_DEFINE_PIXELFOURCC('Y', 'V', 'Y', 'U')
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202 };
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203
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204 typedef struct SDL_Color
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205 {
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206 Uint8 r;
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207 Uint8 g;
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208 Uint8 b;
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209 Uint8 unused;
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210 } SDL_Color;
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211 #define SDL_Colour SDL_Color
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212
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213 typedef struct SDL_Palette SDL_Palette;
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214 typedef int (*SDL_PaletteChangedFunc) (void *userdata, SDL_Palette * palette);
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215
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216 typedef struct SDL_PaletteWatch
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217 {
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218 SDL_PaletteChangedFunc callback;
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219 void *userdata;
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220 struct SDL_PaletteWatch *next;
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221 } SDL_PaletteWatch;
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222
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223 struct SDL_Palette
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224 {
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225 int ncolors;
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226 SDL_Color *colors;
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227
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228 int refcount;
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229 SDL_PaletteWatch *watch;
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230 };
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231
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232 /* Everything in the pixel format structure is read-only */
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233 typedef struct SDL_PixelFormat
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234 {
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235 SDL_Palette *palette;
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236 Uint8 BitsPerPixel;
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237 Uint8 BytesPerPixel;
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238 Uint8 Rloss;
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diff changeset
239 Uint8 Gloss;
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diff changeset
240 Uint8 Bloss;
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diff changeset
241 Uint8 Aloss;
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parents:
diff changeset
242 Uint8 Rshift;
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diff changeset
243 Uint8 Gshift;
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244 Uint8 Bshift;
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245 Uint8 Ashift;
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diff changeset
246 Uint32 Rmask;
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diff changeset
247 Uint32 Gmask;
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248 Uint32 Bmask;
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249 Uint32 Amask;
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250 } SDL_PixelFormat;
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251
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diff changeset
252 /**
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253 * \fn SDL_bool SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask, Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask)
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254 *
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255 * \brief Convert one of the enumerated pixel formats to a bpp and RGBA masks.
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256 *
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257 * \return SDL_TRUE, or SDL_FALSE if the conversion wasn't possible.
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258 *
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259 * \sa SDL_MasksToPixelFormatEnum()
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260 */
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261 extern DECLSPEC SDL_bool SDLCALL SDL_PixelFormatEnumToMasks(Uint32 format,
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262 int *bpp,
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263 Uint32 * Rmask,
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264 Uint32 * Gmask,
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265 Uint32 * Bmask,
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266 Uint32 * Amask);
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267
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268 /**
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269 * \fn Uint32 SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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270 *
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271 * \brief Convert a bpp and RGBA masks to an enumerated pixel format.
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272 *
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273 * \return The pixel format, or SDL_PixelFormat_Unknown if the conversion wasn't possible.
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274 *
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275 * \sa SDL_PixelFormatEnumToMasks()
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276 */
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277 extern DECLSPEC Uint32 SDLCALL SDL_MasksToPixelFormatEnum(int bpp,
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278 Uint32 Rmask,
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279 Uint32 Gmask,
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280 Uint32 Bmask,
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281 Uint32 Amask);
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282
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283 /**
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284 * \fn SDL_Palette *SDL_AllocPalette(int ncolors)
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285 *
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286 * \brief Create a palette structure with the specified number of color entries.
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287 *
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288 * \return A new palette, or NULL if there wasn't enough memory
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289 *
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290 * \note The palette entries are initialized to white.
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291 *
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292 * \sa SDL_FreePalette()
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293 */
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294 extern DECLSPEC SDL_Palette *SDLCALL SDL_AllocPalette(int ncolors);
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295
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296 /**
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297 * \fn int SDL_AddPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata)
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298 *
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299 * \brief Add a callback function which is called when the palette changes.
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300 *
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301 * \sa SDL_DelPaletteWatch()
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302 */
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303 extern DECLSPEC int SDLCALL SDL_AddPaletteWatch(SDL_Palette * palette,
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304 SDL_PaletteChangedFunc
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305 callback, void *userdata);
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306
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307 /**
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308 * \fn void SDL_DelPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata)
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309 *
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310 * \brief Remove a callback function previously added with SDL_AddPaletteWatch()
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311 *
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312 * \sa SDL_AddPaletteWatch()
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313 */
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314 extern DECLSPEC void SDLCALL SDL_DelPaletteWatch(SDL_Palette * palette,
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315 SDL_PaletteChangedFunc
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316 callback, void *userdata);
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317
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318 /**
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319 * \fn int SDL_SetPaletteColors(SDL_Palette *palette, const SDL_Colors *colors, int firstcolor, int numcolors)
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320 *
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321 * \brief Set a range of colors in a palette.
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322 *
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323 * \param palette The palette to modify
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324 * \param colors An array of colors to copy into the palette
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325 * \param firstcolor The index of the first palette entry to modify
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326 * \param ncolors The number of entries to modify
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327 *
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328 * \return 0 on success, or -1 if not all of the colors could be set
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329 */
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330 extern DECLSPEC int SDLCALL SDL_SetPaletteColors(SDL_Palette * palette,
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331 const SDL_Color * colors,
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332 int firstcolor, int ncolors);
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333
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334 /**
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335 * \fn void SDL_FreePalette(SDL_Palette *palette)
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336 *
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337 * \brief Free a palette created with SDL_AllocPalette()
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338 *
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339 * \sa SDL_AllocPalette()
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340 */
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341 extern DECLSPEC void SDLCALL SDL_FreePalette(SDL_Palette * palette);
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342
2275
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343 /**
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344 * \fn Uint32 SDL_MapRGB(const SDL_PixelFormat *format,
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345 * Uint8 r, Uint8 g, Uint8 b)
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346 *
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347 * \brief Maps an RGB triple to an opaque pixel value for a given pixel format
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348 *
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349 * \sa SDL_MapRGBA
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350 */
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351 extern DECLSPEC Uint32 SDLCALL SDL_MapRGB(const SDL_PixelFormat * format,
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352 Uint8 r, Uint8 g, Uint8 b);
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353
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354 /**
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355 * \fn Uint32 SDL_MapRGBA(const SDL_PixelFormat *fmt,
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356 * Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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357 *
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358 * \brief Maps an RGBA quadruple to a pixel value for a given pixel format
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359 *
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360 * \sa SDL_MapRGB
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361 */
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362 extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA(const SDL_PixelFormat * format,
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363 Uint8 r, Uint8 g, Uint8 b,
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364 Uint8 a);
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365
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366 /**
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367 * \fn void SDL_GetRGB(Uint32 pixel, const SDL_PixelFormat * format,
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368 * Uint8 * r, Uint8 * g, Uint8 * b)
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369 *
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370 * \brief Maps a pixel value into the RGB components for a given pixel format
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371 *
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372 * \sa SDL_GetRGBA
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373 */
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374 extern DECLSPEC void SDLCALL SDL_GetRGB(Uint32 pixel,
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375 const SDL_PixelFormat * format,
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376 Uint8 * r, Uint8 * g, Uint8 * b);
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377
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378 /**
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379 * \fn void SDL_GetRGBA(Uint32 pixel, const SDL_PixelFormat * format,
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380 * Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a)
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381 *
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382 * \brief Maps a pixel value into the RGBA components for a given pixel format
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383 *
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384 * \sa SDL_GetRGB
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385 */
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386 extern DECLSPEC void SDLCALL SDL_GetRGBA(Uint32 pixel,
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387 const SDL_PixelFormat * format,
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388 Uint8 * r, Uint8 * g, Uint8 * b,
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389 Uint8 * a);
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390
1895
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391 /* Ends C function definitions when using C++ */
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392 #ifdef __cplusplus
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393 /* *INDENT-OFF* */
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394 }
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395 /* *INDENT-ON* */
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396 #endif
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397 #include "close_code.h"
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398
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399 #endif /* _SDL_pixels_h */
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400
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401 /* vi: set ts=4 sw=4 expandtab: */