annotate include/SDL_surface.h @ 3696:47d923feedb0

Fixed bug #935 Patrice Mandin Hello, I originally added pth support for threads in SDL 1.2 because on the Atari platform we did not have any thread library. I think pth support could be removed from SDL 1.3 for two reasons: - Atari platform removed - pth does not provides real (preemptive) threads, because it is user space, and expect the application to call one of its function to give CPU to another thread. So it is not exactly useful for applications, that expect threads to run simultaneously.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Jan 2010 20:47:20 +0000
parents f638ded38b8a
children f7b03b6838cb
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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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_surface.h
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25 *
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26 * Header file for ::SDL_surface definition and management functions.
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27 */
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28
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29 #ifndef _SDL_surface_h
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30 #define _SDL_surface_h
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31
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32 #include "SDL_stdinc.h"
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33 #include "SDL_pixels.h"
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34 #include "SDL_rect.h"
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35 #include "SDL_rwops.h"
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36
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37 #include "begin_code.h"
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38 /* Set up for C function definitions, even when using C++ */
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39 #ifdef __cplusplus
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40 /* *INDENT-OFF* */
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41 extern "C" {
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42 /* *INDENT-ON* */
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43 #endif
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44
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45 /**
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46 * \name Surface flags
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47 *
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48 * These are the currently supported flags for the ::SDL_surface.
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49 *
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50 * \internal
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51 * Used internally (read-only).
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52 */
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53 /*@{*/
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54 #define SDL_PREALLOC 0x00000001 /**< Surface uses preallocated memory */
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55 #define SDL_RLEACCEL 0x00000002 /**< Surface is RLE encoded */
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56 /*@}*//*Surface flags*/
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57
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58 /**
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59 * Evaluates to true if the surface needs to be locked before access.
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60 */
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61 #define SDL_MUSTLOCK(S) (((S)->flags & SDL_RLEACCEL) != 0)
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62
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63 /**
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64 * \brief A collection of pixels used in software blitting.
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65 *
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66 * \note This structure should be treated as read-only, except for \c pixels,
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67 * which, if not NULL, contains the raw pixel data for the surface.
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68 */
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69 typedef struct SDL_Surface
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70 {
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71 Uint32 flags; /**< Read-only */
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72 SDL_PixelFormat *format; /**< Read-only */
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73 int w, h; /**< Read-only */
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74 int pitch; /**< Read-only */
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75 void *pixels; /**< Read-write */
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76
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77 /** Application data associated with the surfade */
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78 void *userdata; /**< Read-write */
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79
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80 /** information needed for surfaces requiring locks */
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81 int locked; /**< Read-only */
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82 void *lock_data; /**< Read-only */
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83
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84 /** clipping information */
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85 SDL_Rect clip_rect; /**< Read-only */
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86
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87 /** info for fast blit mapping to other surfaces */
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88 struct SDL_BlitMap *map; /**< Private */
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89
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90 /** format version, bumped at every change to invalidate blit maps */
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91 unsigned int format_version; /**< Private */
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92
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93 /** Reference count -- used when freeing surface */
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94 int refcount; /**< Read-mostly */
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95 } SDL_Surface;
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96
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97 /**
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98 * \brief The type of function used for surface blitting functions.
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99 */
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100 typedef int (*SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
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101 struct SDL_Surface * dst, SDL_Rect * dstrect);
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102
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103 /**
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104 * Allocate and free an RGB surface (must be called after SDL_SetVideoMode).
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105 *
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106 * If the depth is 4 or 8 bits, an empty palette is allocated for the surface.
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107 * If the depth is greater than 8 bits, the pixel format is set using the
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108 * flags '[RGB]mask'.
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109 *
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110 * If the function runs out of memory, it will return NULL.
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111 *
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112 * \param flags The \c flags are obsolete and should be set to 0.
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113 */
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114 extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurface
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115 (Uint32 flags, int width, int height, int depth,
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116 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
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117 extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurfaceFrom(void *pixels,
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118 int width,
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119 int height,
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120 int depth,
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121 int pitch,
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122 Uint32 Rmask,
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123 Uint32 Gmask,
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124 Uint32 Bmask,
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125 Uint32 Amask);
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126 extern DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface * surface);
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127
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128 /**
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129 * \brief Set the palette used by a surface.
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130 *
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131 * \return 0, or -1 if the surface format doesn't use a palette.
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132 *
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133 * \note A single palette can be shared with many surfaces.
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134 */
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135 extern DECLSPEC int SDLCALL SDL_SetSurfacePalette(SDL_Surface * surface,
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136 SDL_Palette * palette);
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137
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138 /**
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139 * \brief Sets up a surface for directly accessing the pixels.
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140 *
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141 * Between calls to SDL_LockSurface() / SDL_UnlockSurface(), you can write
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142 * to and read from \c surface->pixels, using the pixel format stored in
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143 * \c surface->format. Once you are done accessing the surface, you should
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144 * use SDL_UnlockSurface() to release it.
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145 *
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146 * Not all surfaces require locking. If SDL_MUSTLOCK(surface) evaluates
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147 * to 0, then you can read and write to the surface at any time, and the
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148 * pixel format of the surface will not change.
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149 *
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150 * No operating system or library calls should be made between lock/unlock
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151 * pairs, as critical system locks may be held during this time.
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152 *
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153 * SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked.
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154 *
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155 * \sa SDL_UnlockSurface()
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156 */
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157 extern DECLSPEC int SDLCALL SDL_LockSurface(SDL_Surface * surface);
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158 /** \sa SDL_LockSurface() */
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159 extern DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface * surface);
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160
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161 /**
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162 * Load a surface from a seekable SDL data source (memory or file).
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163 *
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164 * If \c freesrc is non-zero, the source will be closed after being read.
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165 *
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166 * The new surface should be freed with SDL_FreeSurface().
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167 *
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168 * \return the new surface, or NULL if there was an error.
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169 */
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170 extern DECLSPEC SDL_Surface *SDLCALL SDL_LoadBMP_RW(SDL_RWops * src,
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171 int freesrc);
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172
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173 /**
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174 * Load a surface from a file.
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175 *
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176 * Convenience macro.
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177 */
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178 #define SDL_LoadBMP(file) SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1)
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179
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180 /**
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181 * Save a surface to a seekable SDL data source (memory or file).
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182 *
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183 * If \c freedst is non-zero, the source will be closed after being written.
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184 *
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185 * \return 0 if successful or -1 if there was an error.
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186 */
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187 extern DECLSPEC int SDLCALL SDL_SaveBMP_RW
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188 (SDL_Surface * surface, SDL_RWops * dst, int freedst);
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189
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190 /**
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191 * Save a surface to a file.
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192 *
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193 * Convenience macro.
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194 */
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195 #define SDL_SaveBMP(surface, file) \
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196 SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1)
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197
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198 /**
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199 * \brief Sets the RLE acceleration hint for a surface.
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200 *
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201 * \return 0 on success, or -1 if the surface is not valid
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202 *
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203 * \note If RLE is enabled, colorkey and alpha blending blits are much faster,
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204 * but the surface must be locked before directly accessing the pixels.
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205 */
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206 extern DECLSPEC int SDLCALL SDL_SetSurfaceRLE(SDL_Surface * surface,
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207 int flag);
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208
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209 /**
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210 * \brief Sets the color key (transparent pixel) in a blittable surface.
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211 *
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212 * \param surface The surface to update
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213 * \param flag Non-zero to enable colorkey and 0 to disable colorkey
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214 * \param key The transparent pixel in the native surface format
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215 *
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216 * \return 0 on success, or -1 if the surface is not valid
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217 */
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218 extern DECLSPEC int SDLCALL SDL_SetColorKey(SDL_Surface * surface,
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219 int flag, Uint32 key);
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220
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221 /**
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222 * \brief Gets the color key (transparent pixel) in a blittable surface.
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223 *
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224 * \param surface The surface to update
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225 * \param key A pointer filled in with the transparent pixel in the native
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226 * surface format
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227 *
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228 * \return 0 on success, or -1 if the surface is not valid or colorkey is not
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229 * enabled.
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230 */
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231 extern DECLSPEC int SDLCALL SDL_GetColorKey(SDL_Surface * surface,
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232 Uint32 * key);
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233
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234 /**
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235 * \brief Set an additional color value used in blit operations.
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236 *
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237 * \param surface The surface to update.
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238 * \param r The red source color value multiplied into blit operations.
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239 * \param g The green source color value multiplied into blit operations.
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240 * \param b The blue source color value multiplied into blit operations.
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241 *
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242 * \return 0 on success, or -1 if the surface is not valid.
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243 *
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244 * \sa SDL_GetSurfaceColorMod()
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245 */
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246 extern DECLSPEC int SDLCALL SDL_SetSurfaceColorMod(SDL_Surface * surface,
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247 Uint8 r, Uint8 g, Uint8 b);
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248
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249
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250 /**
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251 * \brief Get the additional color value used in blit operations.
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252 *
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253 * \param surface The surface to query.
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254 * \param r A pointer filled in with the source red color value.
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255 * \param g A pointer filled in with the source green color value.
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256 * \param b A pointer filled in with the source blue color value.
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257 *
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258 * \return 0 on success, or -1 if the surface is not valid.
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259 *
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260 * \sa SDL_SetSurfaceColorMod()
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261 */
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262 extern DECLSPEC int SDLCALL SDL_GetSurfaceColorMod(SDL_Surface * surface,
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263 Uint8 * r, Uint8 * g,
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264 Uint8 * b);
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265
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266 /**
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267 * \brief Set an additional alpha value used in blit operations.
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268 *
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269 * \param surface The surface to update.
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270 * \param alpha The source alpha value multiplied into blit operations.
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271 *
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272 * \return 0 on success, or -1 if the surface is not valid.
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273 *
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274 * \sa SDL_GetSurfaceAlphaMod()
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275 */
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276 extern DECLSPEC int SDLCALL SDL_SetSurfaceAlphaMod(SDL_Surface * surface,
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277 Uint8 alpha);
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278
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279 /**
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280 * \brief Get the additional alpha value used in blit operations.
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281 *
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282 * \param surface The surface to query.
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283 * \param alpha A pointer filled in with the source alpha value.
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284 *
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285 * \return 0 on success, or -1 if the surface is not valid.
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286 *
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287 * \sa SDL_SetSurfaceAlphaMod()
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288 */
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289 extern DECLSPEC int SDLCALL SDL_GetSurfaceAlphaMod(SDL_Surface * surface,
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290 Uint8 * alpha);
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291
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292 /**
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293 * \brief Set the blend mode used for blit operations.
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294 *
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295 * \param surface The surface to update.
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296 * \param blendMode ::SDL_BlendMode to use for blit blending.
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297 *
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298 * \return 0 on success, or -1 if the parameters are not valid.
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299 *
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300 * \sa SDL_GetSurfaceBlendMode()
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301 */
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302 extern DECLSPEC int SDLCALL SDL_SetSurfaceBlendMode(SDL_Surface * surface,
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303 int blendMode);
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304
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305 /**
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306 * \brief Get the blend mode used for blit operations.
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307 *
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308 * \param surface The surface to query.
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309 * \param blendMode A pointer filled in with the current blend mode.
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310 *
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311 * \return 0 on success, or -1 if the surface is not valid.
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312 *
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313 * \sa SDL_SetSurfaceBlendMode()
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314 */
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315 extern DECLSPEC int SDLCALL SDL_GetSurfaceBlendMode(SDL_Surface * surface,
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316 int *blendMode);
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317
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318 /**
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319 * \brief Set the scale mode used for blit operations.
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320 *
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321 * \param surface The surface to update.
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322 * \param scaleMode ::SDL_TextureScaleMode to use for blit scaling.
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323 *
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324 * \return 0 on success, or -1 if the surface is not valid or the scale mode is
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325 * not supported.
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326 *
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327 * \note If the scale mode is not supported, the closest supported mode is
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328 * chosen. Currently only ::SDL_TEXTURESCALEMODE_FAST is supported on
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329 * surfaces.
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330 *
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331 * \sa SDL_GetSurfaceScaleMode()
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332 */
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333 extern DECLSPEC int SDLCALL SDL_SetSurfaceScaleMode(SDL_Surface * surface,
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334 int scaleMode);
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335
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336 /**
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337 * \brief Get the scale mode used for blit operations.
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338 *
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339 * \param surface The surface to query.
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340 * \param scaleMode A pointer filled in with the current scale mode.
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341 *
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342 * \return 0 on success, or -1 if the surface is not valid.
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343 *
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344 * \sa SDL_SetSurfaceScaleMode()
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345 */
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346 extern DECLSPEC int SDLCALL SDL_GetSurfaceScaleMode(SDL_Surface * surface,
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347 int *scaleMode);
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348
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349 /**
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350 * Sets the clipping rectangle for the destination surface in a blit.
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351 *
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352 * If the clip rectangle is NULL, clipping will be disabled.
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353 *
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354 * If the clip rectangle doesn't intersect the surface, the function will
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355 * return SDL_FALSE and blits will be completely clipped. Otherwise the
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356 * function returns SDL_TRUE and blits to the surface will be clipped to
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357 * the intersection of the surface area and the clipping rectangle.
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358 *
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359 * Note that blits are automatically clipped to the edges of the source
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360 * and destination surfaces.
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361 */
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362 extern DECLSPEC SDL_bool SDLCALL SDL_SetClipRect(SDL_Surface * surface,
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363 const SDL_Rect * rect);
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364
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365 /**
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366 * Gets the clipping rectangle for the destination surface in a blit.
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367 *
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368 * \c rect must be a pointer to a valid rectangle which will be filled
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369 * with the correct values.
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370 */
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371 extern DECLSPEC void SDLCALL SDL_GetClipRect(SDL_Surface * surface,
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372 SDL_Rect * rect);
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373
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374 /**
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375 * Creates a new surface of the specified format, and then copies and maps
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376 * the given surface to it so the blit of the converted surface will be as
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377 * fast as possible. If this function fails, it returns NULL.
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378 *
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379 * The \c flags parameter is passed to SDL_CreateRGBSurface() and has those
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380 * semantics. You can also pass ::SDL_RLEACCEL in the flags parameter and
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381 * SDL will try to RLE accelerate colorkey and alpha blits in the resulting
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382 * surface.
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383 *
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384 * This function is used internally by SDL_DisplayFormat().
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385 */
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386 extern DECLSPEC SDL_Surface *SDLCALL SDL_ConvertSurface
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387 (SDL_Surface * src, SDL_PixelFormat * fmt, Uint32 flags);
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388
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389 /**
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390 * \brief Copy a block of pixels of one format to another format
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391 */
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392 extern DECLSPEC int SDLCALL SDL_ConvertPixels(int width, int height,
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393 Uint32 src_format,
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394 const void * src, int src_pitch,
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395 Uint32 dst_format,
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396 void * dst, int dst_pitch);
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397
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398 /**
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399 * Draws a point with \c color.
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400 *
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401 * The color should be a pixel of the format used by the surface, and
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402 * can be generated by the SDL_MapRGB() function.
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403 *
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404 * \return 0 on success, or -1 on error.
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405 */
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406 extern DECLSPEC int SDLCALL SDL_DrawPoint
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407 (SDL_Surface * dst, int x, int y, Uint32 color);
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408 extern DECLSPEC int SDLCALL SDL_DrawPoints
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409 (SDL_Surface * dst, const SDL_Point * points, int count, Uint32 color);
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410
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411 /**
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412 * Blends a point with an RGBA value.
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413 *
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414 * \return 0 on success, or -1 on error.
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2888
diff changeset
415 */
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
416 extern DECLSPEC int SDLCALL SDL_BlendPoint
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
417 (SDL_Surface * dst, int x, int y,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
418 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
419 extern DECLSPEC int SDLCALL SDL_BlendPoints
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
420 (SDL_Surface * dst, const SDL_Point * points, int count,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
421 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2888
diff changeset
422
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
423 /**
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
424 * Draws a line with \c color.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
425 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
426 * The color should be a pixel of the format used by the surface, and
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
427 * can be generated by the SDL_MapRGB() function.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
428 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
429 * \return 0 on success, or -1 on error.
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
430 */
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
431 extern DECLSPEC int SDLCALL SDL_DrawLine
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
432 (SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color);
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
433 extern DECLSPEC int SDLCALL SDL_DrawLines
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
434 (SDL_Surface * dst, const SDL_Point * points, int count, Uint32 color);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
435
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
436 /**
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
437 * Blends an RGBA value along a line.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
438 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
439 * \return 0 on success, or -1 on error.
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
440 */
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
441 extern DECLSPEC int SDLCALL SDL_BlendLine
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
442 (SDL_Surface * dst, int x1, int y1, int x2, int y2,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
443 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
444 extern DECLSPEC int SDLCALL SDL_BlendLines
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
445 (SDL_Surface * dst, const SDL_Point * points, int count,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
446 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
447
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
448 /**
3593
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
449 * Draws the given rectangle with \c color.
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
450 *
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
451 * If \c rect is NULL, the whole surface will be outlined with \c color.
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
452 *
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
453 * The color should be a pixel of the format used by the surface, and
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
454 * can be generated by the SDL_MapRGB() function.
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
455 *
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
456 * \return 0 on success, or -1 on error.
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
457 */
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
458 extern DECLSPEC int SDLCALL SDL_DrawRect
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
459 (SDL_Surface * dst, const SDL_Rect * rect, Uint32 color);
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
460 extern DECLSPEC int SDLCALL SDL_DrawRects
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
461 (SDL_Surface * dst, const SDL_Rect ** rects, int count, Uint32 color);
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
462
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
463 /**
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
464 * Blends an RGBA value into the outline of the given rectangle.
3593
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
465 *
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
466 * If \c rect is NULL, the whole surface will have a blended outline.
3593
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
467 *
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
468 * \return 0 on success, or -1 on error.
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
469 */
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
470 extern DECLSPEC int SDLCALL SDL_BlendRect
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
471 (SDL_Surface * dst, const SDL_Rect * rect,
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
472 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
473 extern DECLSPEC int SDLCALL SDL_BlendRects
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
474 (SDL_Surface * dst, const SDL_Rect ** rects, int count,
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
475 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
476
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
477 /**
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
478 * Performs a fast fill of the given rectangle with \c color.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
479 *
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
480 * If \c rect is NULL, the whole surface will be filled with \c color.
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
481 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
482 * The color should be a pixel of the format used by the surface, and
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
483 * can be generated by the SDL_MapRGB() function.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
484 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
485 * \return 0 on success, or -1 on error.
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
486 */
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
487 extern DECLSPEC int SDLCALL SDL_FillRect
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
488 (SDL_Surface * dst, const SDL_Rect * rect, Uint32 color);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
489 extern DECLSPEC int SDLCALL SDL_FillRects
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
490 (SDL_Surface * dst, const SDL_Rect ** rects, int count, Uint32 color);
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
491
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
492 /**
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
493 * Blends an RGBA value into the given rectangle.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
494 *
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
495 * If \c rect is NULL, the whole surface will be blended with the color.
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
496 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
497 * \return This function returns 0 on success, or -1 on error.
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
498 */
3593
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
499 extern DECLSPEC int SDLCALL SDL_BlendFillRect
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
500 (SDL_Surface * dst, const SDL_Rect * rect,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
501 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
3593
b931bcfd94a0 In the process of adding rectangle drawing
Sam Lantinga <slouken@libsdl.org>
parents: 3560
diff changeset
502 extern DECLSPEC int SDLCALL SDL_BlendFillRects
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
503 (SDL_Surface * dst, const SDL_Rect ** rects, int count,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
504 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
505
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
506 #if 0
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
507 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
508 * Draws the given circle with \c color.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
509 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
510 * The color should be a pixel of the format used by the surface, and
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
511 * can be generated by the SDL_MapRGB() function.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
512 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
513 * \return 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
514 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
515 extern DECLSPEC int SDLCALL SDL_DrawCircle
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
516 (SDL_Surface * dst, int x, int y, int radius, Uint32 color);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
517
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
518 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
519 * Blends an RGBA value into the outline of the given circle.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
520 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
521 * \return 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
522 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
523 extern DECLSPEC int SDLCALL SDL_BlendCircle
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
524 (SDL_Surface * dst, int x, int y, int radius,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
525 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
526
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
527 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
528 * Fills the given circle with \c color.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
529 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
530 * The color should be a pixel of the format used by the surface, and
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
531 * can be generated by the SDL_MapRGB() function.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
532 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
533 * \return 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
534 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
535 extern DECLSPEC int SDLCALL SDL_FillCircle
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
536 (SDL_Surface * dst, int x, int y, int radius, Uint32 color);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
537
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
538 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
539 * Blends an RGBA value into the given circle.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
540 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
541 * \return This function returns 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
542 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
543 extern DECLSPEC int SDLCALL SDL_BlendFillCircle
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
544 (SDL_Surface * dst, int x, int y, int radius,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
545 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
546
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
547 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
548 * Draws the given ellipse with \c color.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
549 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
550 * The color should be a pixel of the format used by the surface, and
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
551 * can be generated by the SDL_MapRGB() function.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
552 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
553 * \return 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
554 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
555 extern DECLSPEC int SDLCALL SDL_DrawEllipse
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
556 (SDL_Surface * dst, int x, int y, int w, int h, Uint32 color);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
557
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
558 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
559 * Blends an RGBA value into the outline of the given ellipse.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
560 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
561 * \return 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
562 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
563 extern DECLSPEC int SDLCALL SDL_BlendEllipse
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
564 (SDL_Surface * dst, int x, int y, int w, int h,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
565 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
566
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
567 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
568 * Fills the given ellipse with \c color.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
569 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
570 * The color should be a pixel of the format used by the surface, and
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
571 * can be generated by the SDL_MapRGB() function.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
572 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
573 * \return 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
574 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
575 extern DECLSPEC int SDLCALL SDL_FillEllipse
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
576 (SDL_Surface * dst, int x, int y, int w, int h, Uint32 color);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
577
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
578 /**
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
579 * Blends an RGBA value into the given ellipse.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
580 *
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
581 * \return This function returns 0 on success, or -1 on error.
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
582 */
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
583 extern DECLSPEC int SDLCALL SDL_BlendFillEllipse
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
584 (SDL_Surface * dst, int x, int y, int w, int h,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
585 int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
586 #endif // 0
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3593
diff changeset
587
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
588 /**
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
589 * Performs a fast blit from the source surface to the destination surface.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
590 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
591 * This assumes that the source and destination rectangles are
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
592 * the same size. If either \c srcrect or \c dstrect are NULL, the entire
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
593 * surface (\c src or \c dst) is copied. The final blit rectangles are saved
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
594 * in \c srcrect and \c dstrect after all clipping is performed.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
595 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
596 * \return If the blit is successful, it returns 0, otherwise it returns -1.
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
597 *
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
598 * The blit function should not be called on a locked surface.
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
599 *
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
600 * The blit semantics for surfaces with and without alpha and colorkey
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
601 * are defined as follows:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
602 * \verbatim
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
603 RGBA->RGB:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
604 SDL_SRCALPHA set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
605 alpha-blend (using alpha-channel).
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
606 SDL_SRCCOLORKEY ignored.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
607 SDL_SRCALPHA not set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
608 copy RGB.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
609 if SDL_SRCCOLORKEY set, only copy the pixels matching the
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
610 RGB values of the source colour key, ignoring alpha in the
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
611 comparison.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
612
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
613 RGB->RGBA:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
614 SDL_SRCALPHA set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
615 alpha-blend (using the source per-surface alpha value);
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
616 set destination alpha to opaque.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
617 SDL_SRCALPHA not set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
618 copy RGB, set destination alpha to source per-surface alpha value.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
619 both:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
620 if SDL_SRCCOLORKEY set, only copy the pixels matching the
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
621 source colour key.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
622
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
623 RGBA->RGBA:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
624 SDL_SRCALPHA set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
625 alpha-blend (using the source alpha channel) the RGB values;
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
626 leave destination alpha untouched. [Note: is this correct?]
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
627 SDL_SRCCOLORKEY ignored.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
628 SDL_SRCALPHA not set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
629 copy all of RGBA to the destination.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
630 if SDL_SRCCOLORKEY set, only copy the pixels matching the
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
631 RGB values of the source colour key, ignoring alpha in the
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
632 comparison.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
633
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
634 RGB->RGB:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
635 SDL_SRCALPHA set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
636 alpha-blend (using the source per-surface alpha value).
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
637 SDL_SRCALPHA not set:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
638 copy RGB.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
639 both:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
640 if SDL_SRCCOLORKEY set, only copy the pixels matching the
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
641 source colour key.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
642 \endverbatim
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
643 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
644 * If either of the surfaces were in video memory, and the blit returns -2,
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
645 * the video memory was lost, so it should be reloaded with artwork and
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
646 * re-blitted:
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
647 * @code
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
648 * while ( SDL_BlitSurface(image, imgrect, screen, dstrect) == -2 ) {
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
649 * while ( SDL_LockSurface(image) < 0 )
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
650 * Sleep(10);
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
651 * -- Write image pixels to image->pixels --
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
652 * SDL_UnlockSurface(image);
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
653 * }
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
654 * @endcode
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
655 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
656 * This happens under DirectX 5.0 when the system switches away from your
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
657 * fullscreen application. The lock will also fail until you have access
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
658 * to the video memory again.
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
659 *
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
660 * You should call SDL_BlitSurface() unless you know exactly how SDL
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
661 * blitting works internally and how to use the other blit functions.
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
662 */
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
663 #define SDL_BlitSurface SDL_UpperBlit
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
664
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
665 /**
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
666 * This is the public blit function, SDL_BlitSurface(), and it performs
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
667 * rectangle validation and clipping before passing it to SDL_LowerBlit()
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
668 */
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
669 extern DECLSPEC int SDLCALL SDL_UpperBlit
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
670 (SDL_Surface * src, SDL_Rect * srcrect,
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
671 SDL_Surface * dst, SDL_Rect * dstrect);
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
672
3407
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
673 /**
d3baf5ac4e37 Partial fix for bug #859
Sam Lantinga <slouken@libsdl.org>
parents: 3341
diff changeset
674 * This is a semi-private blit function and it performs low-level surface
3341
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
675 * blitting only.
710139a1692d Fixed bug #826
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
676 */
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
677 extern DECLSPEC int SDLCALL SDL_LowerBlit
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
678 (SDL_Surface * src, SDL_Rect * srcrect,
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679 SDL_Surface * dst, SDL_Rect * dstrect);
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680
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681 /**
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682 * \brief Perform a fast, low quality, stretch blit between two surfaces of the
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683 * same pixel format.
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684 *
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685 * \note This function uses a static buffer, and is not thread-safe.
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686 */
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687 extern DECLSPEC int SDLCALL SDL_SoftStretch(SDL_Surface * src,
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688 const SDL_Rect * srcrect,
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689 SDL_Surface * dst,
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690 const SDL_Rect * dstrect);
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691
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692 /* Ends C function definitions when using C++ */
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693 #ifdef __cplusplus
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694 /* *INDENT-OFF* */
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695 }
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696 /* *INDENT-ON* */
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697 #endif
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698 #include "close_code.h"
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699
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700 #endif /* _SDL_surface_h */
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701
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702 /* vi: set ts=4 sw=4 expandtab: */