annotate src/video/x11/SDL_x11image.c @ 252:e8157fcb3114

Updated the source with the correct e-mail address
author Sam Lantinga <slouken@libsdl.org>
date Fri, 14 Dec 2001 12:38:15 +0000
parents 39877400bd1e
children 37fa1484f71b
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, 1998, 1999, 2000, 2001 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include <stdlib.h>
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29 #include <unistd.h>
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30
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31 #include "SDL_error.h"
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32 #include "SDL_endian.h"
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33 #include "SDL_events_c.h"
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34 #include "SDL_x11image_c.h"
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35
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36 #ifndef NO_SHARED_MEMORY
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37
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38 /* Shared memory information */
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39 extern int XShmQueryExtension(Display *dpy); /* Not in X11 headers */
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40
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41 /* Shared memory error handler routine */
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42 static int shm_error;
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43 static int (*X_handler)(Display *, XErrorEvent *) = NULL;
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44 static int shm_errhandler(Display *d, XErrorEvent *e)
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45 {
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46 if ( e->error_code == BadAccess ) {
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47 ++shm_error;
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48 return(0);
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49 } else
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50 return(X_handler(d,e));
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51 }
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52 #endif /* ! NO_SHARED_MEMORY */
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53
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54 /* Various screen update functions available */
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55 static void X11_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
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56 static void X11_MITSHMUpdate(_THIS, int numrects, SDL_Rect *rects);
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57
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58 int X11_SetupImage(_THIS, SDL_Surface *screen)
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59 {
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60 #ifdef NO_SHARED_MEMORY
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61 screen->pixels = malloc(screen->h*screen->pitch);
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62 #else
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63 /* Allocate shared memory if possible */
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64 if ( use_mitshm ) {
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65 shminfo.shmid = shmget(IPC_PRIVATE, screen->h*screen->pitch,
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66 IPC_CREAT|0777);
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67 if ( shminfo.shmid >= 0 ) {
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68 shminfo.shmaddr = (char *)shmat(shminfo.shmid, 0, 0);
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69 shminfo.readOnly = False;
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70 if ( shminfo.shmaddr != (char *)-1 ) {
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71 shm_error = False;
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72 X_handler = XSetErrorHandler(shm_errhandler);
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73 XShmAttach(SDL_Display, &shminfo);
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74 XSync(SDL_Display, True);
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75 XSetErrorHandler(X_handler);
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76 if ( shm_error == True )
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77 shmdt(shminfo.shmaddr);
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78 } else {
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79 shm_error = True;
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80 }
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81 shmctl(shminfo.shmid, IPC_RMID, NULL);
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82 } else {
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83 shm_error = True;
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84 }
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85 if ( shm_error == True )
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86 use_mitshm = 0;
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87 }
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88 if ( use_mitshm ) {
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89 screen->pixels = shminfo.shmaddr;
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90 } else {
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91 screen->pixels = malloc(screen->h*screen->pitch);
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92 }
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93 #endif /* NO_SHARED_MEMORY */
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94 if ( screen->pixels == NULL ) {
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95 SDL_OutOfMemory();
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96 return(-1);
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97 }
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98
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99 #ifdef NO_SHARED_MEMORY
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100 {
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101 int bpp = screen->format->BytesPerPixel;
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102 SDL_Ximage = XCreateImage(SDL_Display, SDL_Visual,
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103 this->hidden->depth, ZPixmap, 0,
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104 (char *)screen->pixels,
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105 screen->w, screen->h,
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106 (bpp == 3) ? 32 : bpp * 8,
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107 0);
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108 }
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109 #else
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110 if ( use_mitshm ) {
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111 SDL_Ximage = XShmCreateImage(SDL_Display, SDL_Visual,
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112 this->hidden->depth, ZPixmap,
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113 shminfo.shmaddr, &shminfo,
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114 screen->w, screen->h);
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115 } else {
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116 int bpp = screen->format->BytesPerPixel;
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117 SDL_Ximage = XCreateImage(SDL_Display, SDL_Visual,
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118 this->hidden->depth, ZPixmap, 0,
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119 (char *)screen->pixels,
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120 screen->w, screen->h,
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121 (bpp == 3) ? 32 : bpp * 8,
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122 0);
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123 }
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124 #endif /* NO_SHARED_MEMORY */
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125 if ( SDL_Ximage == NULL ) {
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126 SDL_SetError("Couldn't create XImage");
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127 #ifndef NO_SHARED_MEMORY
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128 if ( use_mitshm ) {
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129 XShmDetach(SDL_Display, &shminfo);
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130 XSync(SDL_Display, False);
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131 shmdt(shminfo.shmaddr);
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132 screen->pixels = NULL;
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133 }
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134 #endif /* ! NO_SHARED_MEMORY */
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135 return(-1);
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136 }
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137 screen->pitch = SDL_Ximage->bytes_per_line;
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138
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139 /* Determine what blit function to use */
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140 #ifdef NO_SHARED_MEMORY
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141 this->UpdateRects = X11_NormalUpdate;
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142 #else
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143 if ( use_mitshm ) {
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144 this->UpdateRects = X11_MITSHMUpdate;
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145 } else {
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146 this->UpdateRects = X11_NormalUpdate;
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147 }
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148 #endif
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149 return(0);
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150 }
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151
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152 void X11_DestroyImage(_THIS, SDL_Surface *screen)
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153 {
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154 if ( SDL_Ximage ) {
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155 XDestroyImage(SDL_Ximage);
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156 #ifndef NO_SHARED_MEMORY
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157 if ( use_mitshm ) {
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158 XShmDetach(SDL_Display, &shminfo);
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159 XSync(SDL_Display, False);
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160 shmdt(shminfo.shmaddr);
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161 }
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162 #endif /* ! NO_SHARED_MEMORY */
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163 SDL_Ximage = NULL;
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164 }
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165 if ( screen ) {
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166 screen->pixels = NULL;
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167 }
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parents:
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168 }
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parents:
diff changeset
169
166
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parents: 161
diff changeset
170 /* Determine the number of CPUs in the system */
0
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parents:
diff changeset
171 static int num_CPU(void)
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parents:
diff changeset
172 {
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diff changeset
173 static int num_cpus = 0;
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parents:
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174
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175 if(!num_cpus) {
166
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
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parents: 161
diff changeset
176 #if defined(__linux)
0
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diff changeset
177 char line[BUFSIZ];
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parents:
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178 FILE *pstat = fopen("/proc/stat", "r");
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parents:
diff changeset
179 if ( pstat ) {
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parents:
diff changeset
180 while ( fgets(line, sizeof(line), pstat) ) {
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parents:
diff changeset
181 if (memcmp(line, "cpu", 3) == 0 && line[3] != ' ') {
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parents:
diff changeset
182 ++num_cpus;
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parents:
diff changeset
183 }
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parents:
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184 }
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parents:
diff changeset
185 fclose(pstat);
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parents:
diff changeset
186 }
166
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
187 #elif defined(_SC_NPROCESSORS_ONLN)
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Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
188 /* number of processors online (SVR4.0MP compliant machines) */
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
189 num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
190 #elif defined(_SC_NPROCESSORS_CONF)
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Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
191 /* number of processors configured (SVR4.0MP compliant machines) */
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parents: 161
diff changeset
192 num_cpus = sysconf(_SC_NPROCESSORS_CONF);
0
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parents:
diff changeset
193 #endif
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diff changeset
194 if ( num_cpus <= 0 ) {
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195 num_cpus = 1;
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parents:
diff changeset
196 }
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diff changeset
197 }
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parents:
diff changeset
198 return num_cpus;
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parents:
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199 }
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200
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parents:
diff changeset
201 int X11_ResizeImage(_THIS, SDL_Surface *screen, Uint32 flags)
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parents:
diff changeset
202 {
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203 int retval;
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parents:
diff changeset
204
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205 X11_DestroyImage(this, screen);
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parents:
diff changeset
206 if ( flags & SDL_OPENGL ) { /* No image when using GL */
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parents:
diff changeset
207 retval = 0;
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parents:
diff changeset
208 } else {
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parents:
diff changeset
209 retval = X11_SetupImage(this, screen);
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parents:
diff changeset
210 /* We support asynchronous blitting on the display */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
211 if ( flags & SDL_ASYNCBLIT ) {
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parents:
diff changeset
212 /* This is actually slower on single-CPU systems,
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parents:
diff changeset
213 probably because of CPU contention between the
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214 X server and the application.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 Note: Is this still true with XFree86 4.0?
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217 if ( num_CPU() > 1 ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218 screen->flags |= SDL_ASYNCBLIT;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 return(retval);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
223 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224
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parents:
diff changeset
225 /* We don't actually allow hardware surfaces other than the main one */
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parents:
diff changeset
226 int X11_AllocHWSurface(_THIS, SDL_Surface *surface)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 return(-1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 void X11_FreeHWSurface(_THIS, SDL_Surface *surface)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
232 return;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
234
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 int X11_LockHWSurface(_THIS, SDL_Surface *surface)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
236 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 if ( (surface == SDL_VideoSurface) && blit_queued ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
238 XSync(GFX_Display, False);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
239 blit_queued = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
241 return(0);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
243 void X11_UnlockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
244 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
246 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
247
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
248 int X11_FlipHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
249 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
250 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
251 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253 /* Byte-swap the pixels in the display image */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254 static void X11_SwapAllPixels(SDL_Surface *screen)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
258 switch (screen->format->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
259 case 2: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
260 Uint16 *spot;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
261 for ( y=0; y<screen->h; ++y ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
262 spot = (Uint16 *) ((Uint8 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 y * screen->pitch);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
264 for ( x=0; x<screen->w; ++x, ++spot ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
265 *spot = SDL_Swap16(*spot);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
266 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
267 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
268 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
270
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
271 case 4: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
272 Uint32 *spot;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 for ( y=0; y<screen->h; ++y ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
274 spot = (Uint32 *) ((Uint8 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275 y * screen->pitch);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 for ( x=0; x<screen->w; ++x, ++spot ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 *spot = SDL_Swap32(*spot);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 /* should never get here */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 static void X11_SwapPixels(SDL_Surface *screen, SDL_Rect *rect)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 int x, minx, maxx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 int y, miny, maxy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 switch (screen->format->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 case 2: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 Uint16 *spot;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 minx = rect->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297 maxx = rect->x + rect->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 miny = rect->y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 maxy = rect->y + rect->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 for ( y=miny; y<maxy; ++y ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 spot = (Uint16 *) ((Uint8 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 y * screen->pitch + minx * 2);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 for ( x=minx; x<maxx; ++x, ++spot ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 *spot = SDL_Swap16(*spot);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 case 4: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 Uint32 *spot;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 minx = rect->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 maxx = rect->x + rect->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 miny = rect->y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 maxy = rect->y + rect->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 for ( y=miny; y<maxy; ++y ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 spot = (Uint32 *) ((Uint8 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 y * screen->pitch + minx * 4);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 for ( x=minx; x<maxx; ++x, ++spot ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 *spot = SDL_Swap32(*spot);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 /* should never get here */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 static void X11_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 /* Check for endian-swapped X server, swap if necessary (VERY slow!) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 if ( swap_pixels &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 ((this->screen->format->BytesPerPixel%2) == 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 for ( i=0; i<numrects; ++i ) {
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340 if ( ! rects[i].w ) { /* Clipped? */
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341 continue;
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342 }
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343 X11_SwapPixels(this->screen, rects + i);
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344 XPutImage(GFX_Display, SDL_Window, SDL_GC, SDL_Ximage,
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345 rects[i].x, rects[i].y,
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346 rects[i].x, rects[i].y, rects[i].w, rects[i].h);
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347 X11_SwapPixels(this->screen, rects + i);
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348 }
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349 } else {
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350 for ( i=0; i<numrects; ++i ) {
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351 if ( ! rects[i].w ) { /* Clipped? */
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352 continue;
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353 }
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354 XPutImage(GFX_Display, SDL_Window, SDL_GC, SDL_Ximage,
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355 rects[i].x, rects[i].y,
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356 rects[i].x, rects[i].y, rects[i].w, rects[i].h);
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357 }
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358 }
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359 if ( SDL_VideoSurface->flags & SDL_ASYNCBLIT ) {
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360 XFlush(GFX_Display);
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361 ++blit_queued;
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362 } else {
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363 XSync(GFX_Display, False);
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364 }
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365 }
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366
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367 static void X11_MITSHMUpdate(_THIS, int numrects, SDL_Rect *rects)
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368 {
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369 #ifndef NO_SHARED_MEMORY
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370 int i;
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371
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372 for ( i=0; i<numrects; ++i ) {
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373 if ( ! rects[i].w ) { /* Clipped? */
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374 continue;
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375 }
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376 XShmPutImage(GFX_Display, SDL_Window, SDL_GC, SDL_Ximage,
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377 rects[i].x, rects[i].y,
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378 rects[i].x, rects[i].y, rects[i].w, rects[i].h,
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379 False);
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380 }
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381 if ( SDL_VideoSurface->flags & SDL_ASYNCBLIT ) {
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382 XFlush(GFX_Display);
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383 ++blit_queued;
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384 } else {
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385 XSync(GFX_Display, False);
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386 }
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387 #endif /* ! NO_SHARED_MEMORY */
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388 }
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389
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390 /* There's a problem with the automatic refreshing of the display.
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391 Even though the XVideo code uses the GFX_Display to update the
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392 video memory, it appears that updating the window asynchronously
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393 from a different thread will cause "blackouts" of the window.
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394 This is a sort of a hacked workaround for the problem.
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395 */
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396 static int enable_autorefresh = 1;
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397
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398 void X11_DisableAutoRefresh(_THIS)
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diff changeset
399 {
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400 --enable_autorefresh;
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diff changeset
401 }
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diff changeset
402
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parents:
diff changeset
403 void X11_EnableAutoRefresh(_THIS)
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diff changeset
404 {
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diff changeset
405 ++enable_autorefresh;
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parents:
diff changeset
406 }
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parents:
diff changeset
407
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parents:
diff changeset
408 void X11_RefreshDisplay(_THIS)
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diff changeset
409 {
161
eb6b76a95f2d An expose event is now sent when using XVideo output.
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
410 /* Don't refresh a display that doesn't have an image (like GL)
eb6b76a95f2d An expose event is now sent when using XVideo output.
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
411 Instead, post an expose event so the application can refresh.
eb6b76a95f2d An expose event is now sent when using XVideo output.
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
412 */
0
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parents:
diff changeset
413 if ( ! SDL_Ximage || (enable_autorefresh <= 0) ) {
161
eb6b76a95f2d An expose event is now sent when using XVideo output.
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parents: 0
diff changeset
414 SDL_PrivateExpose();
0
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parents:
diff changeset
415 return;
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parents:
diff changeset
416 }
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parents:
diff changeset
417 #ifndef NO_SHARED_MEMORY
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parents:
diff changeset
418 if ( this->UpdateRects == X11_MITSHMUpdate ) {
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diff changeset
419 XShmPutImage(SDL_Display, SDL_Window, SDL_GC, SDL_Ximage,
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diff changeset
420 0, 0, 0, 0, this->screen->w, this->screen->h,
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parents:
diff changeset
421 False);
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parents:
diff changeset
422 } else {
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parents:
diff changeset
423 #else
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parents:
diff changeset
424 {
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parents:
diff changeset
425 #endif /* ! NO_SHARED_MEMORY */
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parents:
diff changeset
426 /* Check for endian-swapped X server, swap if necessary */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 if ( swap_pixels &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 ((this->screen->format->BytesPerPixel%2) == 0) ) {
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parents:
diff changeset
429 X11_SwapAllPixels(this->screen);
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parents:
diff changeset
430 XPutImage(SDL_Display, SDL_Window, SDL_GC, SDL_Ximage,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 0, 0, 0, 0, this->screen->w, this->screen->h);
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parents:
diff changeset
432 X11_SwapAllPixels(this->screen);
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parents:
diff changeset
433 } else {
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parents:
diff changeset
434 XPutImage(SDL_Display, SDL_Window, SDL_GC, SDL_Ximage,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 0, 0, 0, 0, this->screen->w, this->screen->h);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 XSync(SDL_Display, False);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 }