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annotate src/video/SDL_surface.c @ 1672:8e754b82cecc SDL-1.3

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Updated SDL_Surface code for software-only access, fixed some build errors
author Sam Lantinga <slouken@libsdl.org>
date Fri, 09 Jun 2006 07:06:12 +0000
parents eef792d31de8
children 90bf530ced8e
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_video.h"
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25 #include "SDL_compat.h"
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26 #include "SDL_sysvideo.h"
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27 #include "SDL_blit.h"
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28 #include "SDL_RLEaccel_c.h"
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29 #include "SDL_pixels_c.h"
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30 #include "SDL_leaks.h"
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31
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32
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33 /* Public routines */
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34 /*
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35 * Create an empty RGB surface of the appropriate depth
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36 */
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37 SDL_Surface *
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38 SDL_CreateRGBSurface(Uint32 flags,
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39 int width, int height, int depth,
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40 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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41 {
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42 SDL_VideoDevice *_this = SDL_GetVideoDevice();
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43 SDL_Surface *screen;
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44 SDL_Surface *surface;
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45
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46 /* FIXME!! */
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47 /* Make sure the size requested doesn't overflow our datatypes */
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48 /* Next time I write a library like SDL, I'll use int for size. :) */
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49 if (width >= 16384 || height >= 65536) {
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50 SDL_SetError("Width or height is too large");
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51 return (NULL);
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52 }
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53
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54 /* Allocate the surface */
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55 surface = (SDL_Surface *) SDL_malloc(sizeof(*surface));
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56 if (surface == NULL) {
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57 SDL_OutOfMemory();
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58 return (NULL);
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59 }
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60 surface->flags = 0;
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61 surface->format = SDL_AllocFormat(depth, Rmask, Gmask, Bmask, Amask);
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62 if (surface->format == NULL) {
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63 SDL_free(surface);
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64 return (NULL);
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65 }
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66 if (Amask) {
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67 surface->flags |= SDL_SRCALPHA;
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68 }
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69 surface->w = width;
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70 surface->h = height;
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71 surface->pitch = SDL_CalculatePitch(surface);
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72 surface->pixels = NULL;
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73 surface->locked = 0;
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74 surface->map = NULL;
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75 SDL_SetClipRect(surface, NULL);
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76 SDL_FormatChanged(surface);
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77
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78 /* Get the pixels */
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79 if (surface->w && surface->h) {
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80 surface->pixels = SDL_malloc(surface->h * surface->pitch);
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81 if (surface->pixels == NULL) {
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82 SDL_FreeSurface(surface);
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83 SDL_OutOfMemory();
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84 return NULL;
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85 }
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86 /* This is important for bitmaps */
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87 SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
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88 }
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89
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90 /* Allocate an empty mapping */
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91 surface->map = SDL_AllocBlitMap();
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92 if (surface->map == NULL) {
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93 SDL_FreeSurface(surface);
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94 return (NULL);
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95 }
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96
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97 /* The surface is ready to go */
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98 surface->refcount = 1;
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99 #ifdef CHECK_LEAKS
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100 ++surfaces_allocated;
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101 #endif
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102 return (surface);
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103 }
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104
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105 /*
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106 * Create an RGB surface from an existing memory buffer
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107 */
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108 SDL_Surface *
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109 SDL_CreateRGBSurfaceFrom(void *pixels,
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110 int width, int height, int depth, int pitch,
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111 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
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112 Uint32 Amask)
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113 {
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114 SDL_Surface *surface;
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115
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116 surface =
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117 SDL_CreateRGBSurface(0, 0, 0, depth, Rmask, Gmask, Bmask, Amask);
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118 if (surface != NULL) {
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119 surface->flags |= SDL_PREALLOC;
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120 surface->pixels = pixels;
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121 surface->w = width;
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122 surface->h = height;
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123 surface->pitch = pitch;
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124 SDL_SetClipRect(surface, NULL);
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125 }
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126 return surface;
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127 }
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128
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129 SDL_Surface *
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130 SDL_CreateRGBSurfaceFromTexture(SDL_TextureID textureID)
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131 {
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132 SDL_Surface *surface;
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133 Uint32 format;
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134 int w, h;
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135 int bpp;
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136 Uint32 Rmask, Gmask, Bmask, Amask;
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diff changeset
137
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138 if (SDL_QueryTexture(textureID, &format, NULL, &w, &h) < 0) {
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diff changeset
139 return NULL;
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diff changeset
140 }
eef792d31de8 Work in progress. :)
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141
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diff changeset
142 if (!SDL_PixelFormatEnumToMasks
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143 (format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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144 SDL_SetError("Unknown texture format");
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145 return NULL;
eef792d31de8 Work in progress. :)
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diff changeset
146 }
eef792d31de8 Work in progress. :)
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147
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148 surface = SDL_CreateRGBSurface(0, 0, 0, bpp, Rmask, Gmask, Bmask, Amask);
1670
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149 if (surface != NULL) {
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diff changeset
150 surface->flags |= (SDL_HWSURFACE | SDL_PREALLOC);
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151 surface->w = w;
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152 surface->h = h;
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153 surface->lock_data = (void *) textureID;
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diff changeset
154 SDL_SetClipRect(surface, NULL);
eef792d31de8 Work in progress. :)
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155 }
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diff changeset
156 return surface;
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157 }
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158
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diff changeset
159 /*
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160 * Set the palette in a blittable surface
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161 */
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162 int
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163 SDL_SetColors(SDL_Surface * surface, SDL_Color * colors, int firstcolor,
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164 int ncolors)
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165 {
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166 SDL_Palette *pal;
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167 int gotall;
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168 int palsize;
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169
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170 /* Verify the parameters */
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171 pal = surface->format->palette;
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172 if (!pal) {
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173 return 0; /* not a palettized surface */
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174 }
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175 gotall = 1;
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176 palsize = 1 << surface->format->BitsPerPixel;
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177 if (ncolors > (palsize - firstcolor)) {
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178 ncolors = (palsize - firstcolor);
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179 gotall = 0;
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180 }
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181
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182 if (colors != (pal->colors + firstcolor)) {
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183 SDL_memcpy(pal->colors + firstcolor, colors,
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184 ncolors * sizeof(*colors));
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185 }
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186 SDL_FormatChanged(surface);
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187
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188 if (surface->flags & (SDL_SHADOW_SURFACE | SDL_SCREEN_SURFACE)) {
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189 gotall &= SDL_SetScreenColors(surface, colors, firstcolor, ncolors);
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190 }
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191 return gotall;
0
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192 }
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193
0
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194 /*
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195 * Set the color key in a blittable surface
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196 */
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197 int
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198 SDL_SetColorKey(SDL_Surface * surface, Uint32 flag, Uint32 key)
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199 {
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200 /* Sanity check the flag as it gets passed in */
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201 if (flag & SDL_SRCCOLORKEY) {
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202 if (flag & (SDL_RLEACCEL | SDL_RLEACCELOK)) {
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203 flag = (SDL_SRCCOLORKEY | SDL_RLEACCELOK);
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204 } else {
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205 flag = SDL_SRCCOLORKEY;
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206 }
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207 } else {
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208 flag = 0;
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209 }
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210
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211 /* Optimize away operations that don't change anything */
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212 if ((flag == (surface->flags & (SDL_SRCCOLORKEY | SDL_RLEACCELOK))) &&
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213 (key == surface->format->colorkey)) {
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214 return (0);
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215 }
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diff changeset
216
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217 /* UnRLE surfaces before we change the colorkey */
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218 if (surface->flags & SDL_RLEACCEL) {
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219 SDL_UnRLESurface(surface, 1);
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220 }
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221
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222 if (flag) {
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223 surface->flags |= SDL_SRCCOLORKEY;
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224 surface->format->colorkey = key;
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225 if (flag & SDL_RLEACCELOK) {
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226 surface->flags |= SDL_RLEACCELOK;
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227 } else {
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228 surface->flags &= ~SDL_RLEACCELOK;
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229 }
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230 } else {
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231 surface->flags &= ~(SDL_SRCCOLORKEY | SDL_RLEACCELOK);
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232 surface->format->colorkey = 0;
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233 }
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234 SDL_InvalidateMap(surface->map);
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235 return (0);
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236 }
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237
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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diff changeset
238 /* This function sets the alpha channel of a surface */
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diff changeset
239 int
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240 SDL_SetAlpha(SDL_Surface * surface, Uint32 flag, Uint8 value)
0
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diff changeset
241 {
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242 Uint32 oldflags = surface->flags;
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243 Uint32 oldalpha = surface->format->alpha;
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diff changeset
244
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245 /* Sanity check the flag as it gets passed in */
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diff changeset
246 if (flag & SDL_SRCALPHA) {
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diff changeset
247 if (flag & (SDL_RLEACCEL | SDL_RLEACCELOK)) {
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diff changeset
248 flag = (SDL_SRCALPHA | SDL_RLEACCELOK);
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249 } else {
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250 flag = SDL_SRCALPHA;
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251 }
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diff changeset
252 } else {
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diff changeset
253 flag = 0;
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254 }
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255
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256 /* Optimize away operations that don't change anything */
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diff changeset
257 if ((flag == (surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK))) &&
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diff changeset
258 (!flag || value == oldalpha)) {
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diff changeset
259 return (0);
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260 }
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diff changeset
261
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262 if (!(flag & SDL_RLEACCELOK) && (surface->flags & SDL_RLEACCEL))
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263 SDL_UnRLESurface(surface, 1);
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diff changeset
264
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diff changeset
265 if (flag) {
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diff changeset
266 surface->flags |= SDL_SRCALPHA;
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diff changeset
267 surface->format->alpha = value;
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diff changeset
268 if (flag & SDL_RLEACCELOK) {
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diff changeset
269 surface->flags |= SDL_RLEACCELOK;
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270 } else {
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271 surface->flags &= ~SDL_RLEACCELOK;
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272 }
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273 } else {
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274 surface->flags &= ~SDL_SRCALPHA;
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275 surface->format->alpha = SDL_ALPHA_OPAQUE;
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276 }
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277 /*
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278 * The representation for software surfaces is independent of
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279 * per-surface alpha, so no need to invalidate the blit mapping
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280 * if just the alpha value was changed. (If either is 255, we still
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281 * need to invalidate.)
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282 */
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283 if (oldflags != surface->flags
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284 || (((oldalpha + 1) ^ (value + 1)) & 0x100)) {
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285 SDL_InvalidateMap(surface->map);
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286 }
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287 return (0);
0
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288 }
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289
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290 int
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291 SDL_SetAlphaChannel(SDL_Surface * surface, Uint8 value)
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292 {
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293 int row, col;
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294 int offset;
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295 Uint8 *buf;
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296
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297 if ((surface->format->Amask != 0xFF000000) &&
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298 (surface->format->Amask != 0x000000FF)) {
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299 SDL_SetError("Unsupported surface alpha mask format");
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300 return -1;
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301 }
431
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302 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
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303 if (surface->format->Amask == 0xFF000000) {
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304 offset = 3;
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305 } else {
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306 offset = 0;
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307 }
431
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308 #else
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309 if (surface->format->Amask == 0xFF000000) {
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310 offset = 0;
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311 } else {
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312 offset = 3;
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313 }
431
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314 #endif /* Byte ordering */
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315
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316 /* Quickly set the alpha channel of an RGBA or ARGB surface */
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317 if (SDL_MUSTLOCK(surface)) {
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318 if (SDL_LockSurface(surface) < 0) {
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319 return -1;
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320 }
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321 }
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322 row = surface->h;
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323 while (row--) {
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324 col = surface->w;
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325 buf = (Uint8 *) surface->pixels + row * surface->pitch + offset;
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326 while (col--) {
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327 *buf = value;
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328 buf += 4;
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329 }
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330 }
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331 if (SDL_MUSTLOCK(surface)) {
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332 SDL_UnlockSurface(surface);
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333 }
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334 return 0;
431
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335 }
0
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336
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337 /*
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338 * A function to calculate the intersection of two rectangles:
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339 * return true if the rectangles intersect, false otherwise
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340 */
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341 static __inline__ SDL_bool
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342 SDL_IntersectRect(const SDL_Rect * A, const SDL_Rect * B,
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343 SDL_Rect * intersection)
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344 {
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345 int Amin, Amax, Bmin, Bmax;
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346
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347 /* Horizontal intersection */
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348 Amin = A->x;
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349 Amax = Amin + A->w;
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350 Bmin = B->x;
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351 Bmax = Bmin + B->w;
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352 if (Bmin > Amin)
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353 Amin = Bmin;
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354 intersection->x = Amin;
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355 if (Bmax < Amax)
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356 Amax = Bmax;
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357 intersection->w = Amax - Amin > 0 ? Amax - Amin : 0;
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358
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359 /* Vertical intersection */
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360 Amin = A->y;
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361 Amax = Amin + A->h;
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362 Bmin = B->y;
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363 Bmax = Bmin + B->h;
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364 if (Bmin > Amin)
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365 Amin = Bmin;
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366 intersection->y = Amin;
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367 if (Bmax < Amax)
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368 Amax = Bmax;
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369 intersection->h = Amax - Amin > 0 ? Amax - Amin : 0;
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370
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371 return (intersection->w && intersection->h);
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372 }
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373
0
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374 /*
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375 * Set the clipping rectangle for a blittable surface
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376 */
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diff changeset
377 SDL_bool
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378 SDL_SetClipRect(SDL_Surface * surface, const SDL_Rect * rect)
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379 {
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380 SDL_Rect full_rect;
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381
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382 /* Don't do anything if there's no surface to act on */
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383 if (!surface) {
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384 return SDL_FALSE;
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385 }
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386
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diff changeset
387 /* Set up the full surface rectangle */
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diff changeset
388 full_rect.x = 0;
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389 full_rect.y = 0;
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390 full_rect.w = surface->w;
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391 full_rect.h = surface->h;
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diff changeset
392
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diff changeset
393 /* Set the clipping rectangle */
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394 if (!rect) {
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diff changeset
395 surface->clip_rect = full_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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396 return 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
397 }
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398 return SDL_IntersectRect(rect, &full_rect, &surface->clip_rect);
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
399 }
0
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diff changeset
400
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
401 void
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402 SDL_GetClipRect(SDL_Surface * surface, SDL_Rect * rect)
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diff changeset
403 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
404 if (surface && rect) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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405 *rect = surface->clip_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
406 }
0
74212992fb08 Initial revision
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diff changeset
407 }
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
408
0
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diff changeset
409 /*
74212992fb08 Initial revision
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parents:
diff changeset
410 * Set up a blit between two surfaces -- split into three parts:
74212992fb08 Initial revision
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parents:
diff changeset
411 * The upper part, SDL_UpperBlit(), performs clipping and rectangle
74212992fb08 Initial revision
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parents:
diff changeset
412 * verification. The lower part is a pointer to a low level
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 * accelerated blitting function.
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diff changeset
414 *
74212992fb08 Initial revision
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diff changeset
415 * These parts are separated out and each used internally by this
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parents:
diff changeset
416 * library in the optimimum places. They are exported so that if
74212992fb08 Initial revision
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parents:
diff changeset
417 * you know exactly what you are doing, you can optimize your code
74212992fb08 Initial revision
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parents:
diff changeset
418 * by calling the one(s) you need.
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419 */
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diff changeset
420 int
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421 SDL_LowerBlit(SDL_Surface * src, SDL_Rect * srcrect,
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diff changeset
422 SDL_Surface * dst, SDL_Rect * dstrect)
0
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423 {
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diff changeset
424 /* Check to make sure the blit mapping is valid */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
425 if ((src->map->dst != dst) ||
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
426 (src->map->dst->format_version != src->map->format_version)) {
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diff changeset
427 if (SDL_MapSurface(src, dst) < 0) {
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diff changeset
428 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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429 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
430 }
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8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
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diff changeset
431 return (src->map->sw_blit(src, srcrect, dst, dstrect));
0
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432 }
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diff changeset
433
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diff changeset
434
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
435 int
1668
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diff changeset
436 SDL_UpperBlit(SDL_Surface * src, SDL_Rect * srcrect,
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diff changeset
437 SDL_Surface * dst, SDL_Rect * dstrect)
0
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diff changeset
438 {
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diff changeset
439 SDL_Rect fulldst;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
440 int srcx, srcy, w, h;
0
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diff changeset
441
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
442 /* Make sure the surfaces aren't locked */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
443 if (!src || !dst) {
1668
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444 SDL_SetError("SDL_UpperBlit: passed a NULL surface");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
445 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
446 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
447 if (src->locked || dst->locked) {
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diff changeset
448 SDL_SetError("Surfaces must not be locked during blit");
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
449 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
450 }
0
74212992fb08 Initial revision
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diff changeset
451
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diff changeset
452 /* If the destination rectangle is NULL, use the entire dest surface */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
453 if (dstrect == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
454 fulldst.x = fulldst.y = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
455 dstrect = &fulldst;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
456 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
457
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
458 /* clip the source rectangle to the source surface */
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diff changeset
459 if (srcrect) {
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diff changeset
460 int maxw, maxh;
0
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diff changeset
461
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diff changeset
462 srcx = srcrect->x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
463 w = srcrect->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
464 if (srcx < 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
465 w += srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
466 dstrect->x -= srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
467 srcx = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
468 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
469 maxw = src->w - srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
470 if (maxw < w)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
471 w = maxw;
0
74212992fb08 Initial revision
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parents:
diff changeset
472
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
473 srcy = srcrect->y;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
474 h = srcrect->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
475 if (srcy < 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
476 h += srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
477 dstrect->y -= srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
478 srcy = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
479 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
480 maxh = src->h - srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
481 if (maxh < h)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
482 h = maxh;
0
74212992fb08 Initial revision
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parents:
diff changeset
483
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
484 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
485 srcx = srcy = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
486 w = src->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
487 h = src->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
488 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
489
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
490 /* clip the destination rectangle against the clip rectangle */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
491 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
492 SDL_Rect *clip = &dst->clip_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
493 int dx, dy;
0
74212992fb08 Initial revision
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parents:
diff changeset
494
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
495 dx = clip->x - dstrect->x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
496 if (dx > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
497 w -= dx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
498 dstrect->x += dx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
499 srcx += dx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
500 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
501 dx = dstrect->x + w - clip->x - clip->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
502 if (dx > 0)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
503 w -= dx;
0
74212992fb08 Initial revision
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parents:
diff changeset
504
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
505 dy = clip->y - dstrect->y;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
506 if (dy > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
507 h -= dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
508 dstrect->y += dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
509 srcy += dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
510 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
511 dy = dstrect->y + h - clip->y - clip->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
512 if (dy > 0)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
513 h -= dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
514 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515
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diff changeset
516 if (w > 0 && h > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
517 SDL_Rect sr;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
518 sr.x = srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
519 sr.y = srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
520 sr.w = dstrect->w = w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
521 sr.h = dstrect->h = h;
1668
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diff changeset
522 return SDL_LowerBlit(src, &sr, dst, dstrect);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
523 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
524 dstrect->w = dstrect->h = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
525 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
528 static int
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parents: 1666
diff changeset
529 SDL_FillRect1(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
530 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
531 /* FIXME: We have to worry about packing order.. *sigh* */
1668
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diff changeset
532 SDL_SetError("1-bpp rect fill not yet implemented");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
533 return -1;
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
534 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
535
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
536 static int
1668
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parents: 1666
diff changeset
537 SDL_FillRect4(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
538 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
539 /* FIXME: We have to worry about packing order.. *sigh* */
1668
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
540 SDL_SetError("4-bpp rect fill not yet implemented");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
541 return -1;
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
542 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
543
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 * This function performs a fast fill of the given rectangle with 'color'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
547 int
1668
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parents: 1666
diff changeset
548 SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
0
74212992fb08 Initial revision
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parents:
diff changeset
549 {
1668
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diff changeset
550 SDL_VideoDevice *_this = SDL_GetVideoDevice();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
551 int x, y;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
552 Uint8 *row;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
554 /* This function doesn't work on surfaces < 8 bpp */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
555 if (dst->format->BitsPerPixel < 8) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
556 switch (dst->format->BitsPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
557 case 1:
1668
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diff changeset
558 return SDL_FillRect1(dst, dstrect, color);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
559 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
560 case 4:
1668
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
561 return SDL_FillRect4(dst, dstrect, color);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
562 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
563 default:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
564 SDL_SetError("Fill rect on unsupported surface format");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
565 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
566 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
567 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
568 }
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
569
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
570 /* If 'dstrect' == NULL, then fill the whole surface */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
571 if (dstrect) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
572 /* Perform clipping */
1668
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
573 if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
574 return (0);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
575 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
576 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
577 dstrect = &dst->clip_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
578 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
579
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
580 /* Perform software fill */
1668
4da1ee79c9af more tweaking indent options
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parents: 1666
diff changeset
581 if (SDL_LockSurface(dst) != 0) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
582 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
583 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
584 row = (Uint8 *) dst->pixels + dstrect->y * dst->pitch +
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
585 dstrect->x * dst->format->BytesPerPixel;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
586 if (dst->format->palette || (color == 0)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
587 x = dstrect->w * dst->format->BytesPerPixel;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
588 if (!color && !((uintptr_t) row & 3) && !(x & 3)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
589 && !(dst->pitch & 3)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
590 int n = x >> 2;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
591 for (y = dstrect->h; y; --y) {
1668
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parents: 1666
diff changeset
592 SDL_memset4(row, 0, n);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
593 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
594 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
595 } else {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 #ifdef __powerpc__
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
597 /*
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
598 * SDL_memset() on PPC (both glibc and codewarrior) uses
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
599 * the dcbz (Data Cache Block Zero) instruction, which
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
600 * causes an alignment exception if the destination is
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
601 * uncachable, so only use it on software surfaces
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
602 */
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
603 if (dst->flags & SDL_HWSURFACE) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
604 if (dstrect->w >= 8) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
605 /*
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
606 * 64-bit stores are probably most
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
607 * efficient to uncached video memory
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
608 */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
609 double fill;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
610 SDL_memset(&fill, color, (sizeof fill));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
611 for (y = dstrect->h; y; y--) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
612 Uint8 *d = row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
613 unsigned n = x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
614 unsigned nn;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
615 Uint8 c = color;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
616 double f = fill;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
617 while ((unsigned long) d & (sizeof(double) - 1)) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
618 *d++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
619 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
620 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
621 nn = n / (sizeof(double) * 4);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
622 while (nn) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
623 ((double *) d)[0] = f;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
624 ((double *) d)[1] = f;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
625 ((double *) d)[2] = f;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
626 ((double *) d)[3] = f;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
627 d += 4 * sizeof(double);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
628 nn--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
629 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
630 n &= ~(sizeof(double) * 4 - 1);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
631 nn = n / sizeof(double);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
632 while (nn) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
633 *(double *) d = f;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
634 d += sizeof(double);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
635 nn--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
636 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
637 n &= ~(sizeof(double) - 1);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
638 while (n) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
639 *d++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
640 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
641 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
642 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
643 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
644 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
645 /* narrow boxes */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
646 for (y = dstrect->h; y; y--) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
647 Uint8 *d = row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
648 Uint8 c = color;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
649 int n = x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
650 while (n) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
651 *d++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
652 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
653 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
654 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
655 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
656 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
657 } else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
658 #endif /* __powerpc__ */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
659 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
660 for (y = dstrect->h; y; y--) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
661 SDL_memset(row, color, x);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
662 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
663 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
664 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
665 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
666 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
667 switch (dst->format->BytesPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
668 case 2:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
669 for (y = dstrect->h; y; --y) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
670 Uint16 *pixels = (Uint16 *) row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
671 Uint16 c = (Uint16) color;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
672 Uint32 cc = (Uint32) c << 16 | c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
673 int n = dstrect->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
674 if ((uintptr_t) pixels & 3) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
675 *pixels++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
676 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
677 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
678 if (n >> 1)
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
679 SDL_memset4(pixels, cc, n >> 1);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
680 if (n & 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
681 pixels[n - 1] = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
682 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
683 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
684 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
685
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
686 case 3:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
687 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
688 color <<= 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
689 #endif
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
690 for (y = dstrect->h; y; --y) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
691 Uint8 *pixels = row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
692 for (x = dstrect->w; x; --x) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
693 SDL_memcpy(pixels, &color, 3);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
694 pixels += 3;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
695 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
696 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
697 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
698 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
699
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
700 case 4:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
701 for (y = dstrect->h; y; --y) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
702 SDL_memset4(row, color, dstrect->w);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
703 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
704 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
705 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
706 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
707 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
708 SDL_UnlockSurface(dst);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
709
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
710 /* We're done! */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
711 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
712 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
713
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
714 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
715 * Lock a surface to directly access the pixels
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
716 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
717 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
718 SDL_LockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
719 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
720 if (!surface->locked) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
721 /* Perform the lock */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
722 if (surface->flags & SDL_HWSURFACE) {
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
723 if (SDL_LockTexture
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
724 ((SDL_TextureID) surface->lock_data, NULL, 1,
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
725 &surface->pixels, &surface->pitch) < 0) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
726 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
727 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
728 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
729 if (surface->flags & SDL_RLEACCEL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
730 SDL_UnRLESurface(surface, 1);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
731 surface->flags |= SDL_RLEACCEL; /* save accel'd state */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
732 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
733 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
734
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
735 /* Increment the surface lock count, for recursive locks */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
736 ++surface->locked;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
737
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
738 /* Ready to go.. */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
739 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
740 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
741
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
742 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
743 * Unlock a previously locked surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
744 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
745 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
746 SDL_UnlockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
747 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
748 /* Only perform an unlock if we are locked */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
749 if (!surface->locked || (--surface->locked > 0)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
750 return;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
751 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
752
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
753 /* Unlock hardware or accelerated surfaces */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
754 if (surface->flags & SDL_HWSURFACE) {
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
755 SDL_UnlockTexture((SDL_TextureID) surface->lock_data);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
756 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
757 /* Update RLE encoded surface with new data */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
758 if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
759 surface->flags &= ~SDL_RLEACCEL; /* stop lying */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
760 SDL_RLESurface(surface);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
761 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
762 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
763 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
765 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
766 * Convert a surface into the specified pixel format.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
767 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
768 SDL_Surface *
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
769 SDL_ConvertSurface(SDL_Surface * surface,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
770 SDL_PixelFormat * format, Uint32 flags)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
771 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
772 SDL_Surface *convert;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
773 Uint32 colorkey = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
774 Uint8 alpha = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
775 Uint32 surface_flags;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
776 SDL_Rect bounds;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
777
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
778 /* Check for empty destination palette! (results in empty image) */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
779 if (format->palette != NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
780 int i;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
781 for (i = 0; i < format->palette->ncolors; ++i) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
782 if ((format->palette->colors[i].r != 0) ||
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
783 (format->palette->colors[i].g != 0) ||
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
784 (format->palette->colors[i].b != 0))
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
785 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
786 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
787 if (i == format->palette->ncolors) {
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
788 SDL_SetError("Empty destination palette");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
789 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
790 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
791 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
792
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
793 /* Create a new surface with the desired format */
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
794 convert = SDL_CreateRGBSurface(flags,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
795 surface->w, surface->h,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
796 format->BitsPerPixel, format->Rmask,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
797 format->Gmask, format->Bmask,
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
798 format->Amask);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
799 if (convert == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
800 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
801 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
802
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
803 /* Copy the palette if any */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
804 if (format->palette && convert->format->palette) {
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
805 SDL_memcpy(convert->format->palette->colors,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
806 format->palette->colors,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
807 format->palette->ncolors * sizeof(SDL_Color));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
808 convert->format->palette->ncolors = format->palette->ncolors;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
809 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
810
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
811 /* Save the original surface color key and alpha */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
812 surface_flags = surface->flags;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
813 if ((surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
814 /* Convert colourkeyed surfaces to RGBA if requested */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
815 if ((flags & SDL_SRCCOLORKEY) != SDL_SRCCOLORKEY && format->Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
816 surface_flags &= ~SDL_SRCCOLORKEY;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
817 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
818 colorkey = surface->format->colorkey;
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
819 SDL_SetColorKey(surface, 0, 0);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
820 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
821 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
822 if ((surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
823 /* Copy over the alpha channel to RGBA if requested */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
824 if (format->Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
825 surface->flags &= ~SDL_SRCALPHA;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
826 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
827 alpha = surface->format->alpha;
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
828 SDL_SetAlpha(surface, 0, 0);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
829 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
830 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
831
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
832 /* Copy over the image data */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
833 bounds.x = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
834 bounds.y = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
835 bounds.w = surface->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
836 bounds.h = surface->h;
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
837 SDL_LowerBlit(surface, &bounds, convert, &bounds);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
838
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
839 /* Clean up the original surface, and update converted surface */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
840 if (convert != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
841 SDL_SetClipRect(convert, &surface->clip_rect);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
842 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
843 if ((surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
844 Uint32 cflags = surface_flags & (SDL_SRCCOLORKEY | SDL_RLEACCELOK);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
845 if (convert != NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
846 Uint8 keyR, keyG, keyB;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
847
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
848 SDL_GetRGB(colorkey, surface->format, &keyR, &keyG, &keyB);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
849 SDL_SetColorKey(convert, cflags | (flags & SDL_RLEACCELOK),
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
850 SDL_MapRGB(convert->format, keyR, keyG, keyB));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
851 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
852 SDL_SetColorKey(surface, cflags, colorkey);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
853 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
854 if ((surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
855 Uint32 aflags = surface_flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
856 if (convert != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
857 SDL_SetAlpha(convert, aflags | (flags & SDL_RLEACCELOK), alpha);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
858 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
859 if (format->Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
860 surface->flags |= SDL_SRCALPHA;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
861 } else {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
862 SDL_SetAlpha(surface, aflags, alpha);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
863 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
864 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
865
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
866 /* We're ready to go! */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
867 return (convert);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
868 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
869
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
870 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
871 * Free a surface created by the above function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
872 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
873 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
874 SDL_FreeSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
875 {
1666
6e7ec5cb83c3 The dummy video driver compiles. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
876 if (surface == NULL) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
877 return;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
878 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
879 if (--surface->refcount > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
880 return;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
881 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
882 while (surface->locked > 0) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
883 SDL_UnlockSurface(surface);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
884 }
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
885 if (surface->flags & SDL_RLEACCEL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
886 SDL_UnRLESurface(surface, 0);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
887 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
888 if (surface->format) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
889 SDL_FreeFormat(surface->format);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
890 surface->format = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
891 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
892 if (surface->map != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
893 SDL_FreeBlitMap(surface->map);
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894 surface->map = NULL;
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895 }
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896 /* Should we destroy the texture too?
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parents: 1670
diff changeset
897 if (surface->flags & SDL_HWSURFACE) {
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
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parents: 1670
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898 SDL_DestroyTexture((SDL_TextureID)surface->lock_data);
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
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parents: 1670
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899 }
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
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900 */
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parents: 1456
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901 if (surface->pixels && ((surface->flags & SDL_PREALLOC) != SDL_PREALLOC)) {
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4da1ee79c9af more tweaking indent options
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parents: 1666
diff changeset
902 SDL_free(surface->pixels);
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parents: 1456
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903 }
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diff changeset
904 SDL_free(surface);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
905 #ifdef CHECK_LEAKS
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906 --surfaces_allocated;
0
74212992fb08 Initial revision
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907 #endif
74212992fb08 Initial revision
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parents:
diff changeset
908 }
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Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
909
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
910 /* vi: set ts=4 sw=4 expandtab: */