annotate include/SDL_surface.h @ 3635:5ea5e4e6103f

Call SDL_Init() before SDL_GetNumAudioDrivers(). Not sure why that was reversed.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 10 Jan 2010 19:09:57 +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.
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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,
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
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: */