annotate src/video/x11/SDL_x11image.c @ 4396:f5d3f7fa071d SDL-1.2

1.2 pulseaudio: make some function pointers static.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 17 Jan 2010 05:17:59 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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d910939febfa Use consistent identifiers for the various platforms we support.
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22 #include "SDL_config.h"
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23
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24 #include <stdio.h>
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39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
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25 #include <unistd.h>
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26
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27 #include "SDL_endian.h"
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19418e4422cb New configure-based build system. Still work in progress, but much improved
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28 #include "../../events/SDL_events_c.h"
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29 #include "SDL_x11image_c.h"
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30
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31 #ifndef NO_SHARED_MEMORY
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32
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33 /* Shared memory error handler routine */
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34 static int shm_error;
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35 static int (*X_handler)(Display *, XErrorEvent *) = NULL;
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36 static int shm_errhandler(Display *d, XErrorEvent *e)
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37 {
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38 if ( e->error_code == BadAccess ) {
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26a0e2d69d39 *** empty log message ***
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39 shm_error = True;
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40 return(0);
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41 } else
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42 return(X_handler(d,e));
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43 }
270
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44
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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45 static void try_mitshm(_THIS, SDL_Surface *screen)
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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46 {
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3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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47 /* Dynamic X11 may not have SHM entry points on this box. */
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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48 if ((use_mitshm) && (!SDL_X11_HAVE_SHM))
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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49 use_mitshm = 0;
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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50
270
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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51 if(!use_mitshm)
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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52 return;
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53 shminfo.shmid = shmget(IPC_PRIVATE, screen->h*screen->pitch,
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54 IPC_CREAT | 0777);
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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55 if ( shminfo.shmid >= 0 ) {
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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56 shminfo.shmaddr = (char *)shmat(shminfo.shmid, 0, 0);
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57 shminfo.readOnly = False;
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58 if ( shminfo.shmaddr != (char *)-1 ) {
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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59 shm_error = False;
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60 X_handler = XSetErrorHandler(shm_errhandler);
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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61 XShmAttach(SDL_Display, &shminfo);
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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62 XSync(SDL_Display, True);
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63 XSetErrorHandler(X_handler);
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64 if ( shm_error )
270
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65 shmdt(shminfo.shmaddr);
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66 } else {
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67 shm_error = True;
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68 }
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69 shmctl(shminfo.shmid, IPC_RMID, NULL);
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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70 } else {
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71 shm_error = True;
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72 }
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73 if ( shm_error )
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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74 use_mitshm = 0;
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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75 if ( use_mitshm )
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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76 screen->pixels = shminfo.shmaddr;
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77 }
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78 #endif /* ! NO_SHARED_MEMORY */
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79
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80 /* Various screen update functions available */
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81 static void X11_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
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82 static void X11_MITSHMUpdate(_THIS, int numrects, SDL_Rect *rects);
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83
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84 int X11_SetupImage(_THIS, SDL_Surface *screen)
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85 {
270
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86 #ifndef NO_SHARED_MEMORY
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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87 try_mitshm(this, screen);
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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88 if(use_mitshm) {
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89 SDL_Ximage = XShmCreateImage(SDL_Display, SDL_Visual,
270
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90 this->hidden->depth, ZPixmap,
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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91 shminfo.shmaddr, &shminfo,
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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92 screen->w, screen->h);
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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93 if(!SDL_Ximage) {
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94 XShmDetach(SDL_Display, &shminfo);
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95 XSync(SDL_Display, False);
270
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96 shmdt(shminfo.shmaddr);
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97 screen->pixels = NULL;
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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98 goto error;
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99 }
270
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100 this->UpdateRects = X11_MITSHMUpdate;
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101 }
551
b0c5a13a4243 Doh! Compile error if there was no X11 shared image support
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102 if(!use_mitshm)
270
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103 #endif /* not NO_SHARED_MEMORY */
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b0c5a13a4243 Doh! Compile error if there was no X11 shared image support
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104 {
270
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105 int bpp;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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106 screen->pixels = SDL_malloc(screen->h*screen->pitch);
270
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107 if ( screen->pixels == NULL ) {
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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108 SDL_OutOfMemory();
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109 return -1;
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110 }
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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111 bpp = screen->format->BytesPerPixel;
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112 SDL_Ximage = XCreateImage(SDL_Display, SDL_Visual,
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113 this->hidden->depth, ZPixmap, 0,
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114 (char *)screen->pixels,
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115 screen->w, screen->h,
270
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116 32, 0);
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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117 if ( SDL_Ximage == NULL )
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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118 goto error;
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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119 /* XPutImage will convert byte sex automatically */
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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120 SDL_Ximage->byte_order = (SDL_BYTEORDER == SDL_BIG_ENDIAN)
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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121 ? MSBFirst : LSBFirst;
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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122 this->UpdateRects = X11_NormalUpdate;
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123 }
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124 screen->pitch = SDL_Ximage->bytes_per_line;
270
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125 return(0);
0
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126
270
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127 error:
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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128 SDL_SetError("Couldn't create XImage");
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
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129 return 1;
0
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130 }
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131
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132 void X11_DestroyImage(_THIS, SDL_Surface *screen)
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parents:
diff changeset
133 {
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diff changeset
134 if ( SDL_Ximage ) {
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3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
135 XDestroyImage(SDL_Ximage);
0
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diff changeset
136 #ifndef NO_SHARED_MEMORY
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137 if ( use_mitshm ) {
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3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
138 XShmDetach(SDL_Display, &shminfo);
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
139 XSync(SDL_Display, False);
0
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parents:
diff changeset
140 shmdt(shminfo.shmaddr);
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parents:
diff changeset
141 }
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parents:
diff changeset
142 #endif /* ! NO_SHARED_MEMORY */
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parents:
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143 SDL_Ximage = NULL;
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parents:
diff changeset
144 }
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parents:
diff changeset
145 if ( screen ) {
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parents:
diff changeset
146 screen->pixels = NULL;
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parents:
diff changeset
147 }
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parents:
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148 }
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parents:
diff changeset
149
166
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
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parents: 161
diff changeset
150 /* Determine the number of CPUs in the system */
0
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parents:
diff changeset
151 static int num_CPU(void)
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parents:
diff changeset
152 {
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diff changeset
153 static int num_cpus = 0;
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parents:
diff changeset
154
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diff changeset
155 if(!num_cpus) {
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
156 #if defined(__LINUX__)
0
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diff changeset
157 char line[BUFSIZ];
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parents:
diff changeset
158 FILE *pstat = fopen("/proc/stat", "r");
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parents:
diff changeset
159 if ( pstat ) {
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parents:
diff changeset
160 while ( fgets(line, sizeof(line), pstat) ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
161 if (SDL_memcmp(line, "cpu", 3) == 0 && line[3] != ' ') {
0
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parents:
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162 ++num_cpus;
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parents:
diff changeset
163 }
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parents:
diff changeset
164 }
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parents:
diff changeset
165 fclose(pstat);
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parents:
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166 }
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
167 #elif defined(__IRIX__)
605
6399f4e90211 IRIX patches from Andrea Suatoni
Sam Lantinga <slouken@libsdl.org>
parents: 551
diff changeset
168 num_cpus = sysconf(_SC_NPROC_ONLN);
166
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
169 #elif defined(_SC_NPROCESSORS_ONLN)
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
170 /* number of processors online (SVR4.0MP compliant machines) */
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
171 num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
172 #elif defined(_SC_NPROCESSORS_CONF)
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
173 /* number of processors configured (SVR4.0MP compliant machines) */
39877400bd1e Fixed Solaris nitpicks (thanks Mattias!)
Sam Lantinga <slouken@libsdl.org>
parents: 161
diff changeset
174 num_cpus = sysconf(_SC_NPROCESSORS_CONF);
0
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diff changeset
175 #endif
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diff changeset
176 if ( num_cpus <= 0 ) {
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diff changeset
177 num_cpus = 1;
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parents:
diff changeset
178 }
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parents:
diff changeset
179 }
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diff changeset
180 return num_cpus;
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parents:
diff changeset
181 }
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diff changeset
182
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diff changeset
183 int X11_ResizeImage(_THIS, SDL_Surface *screen, Uint32 flags)
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parents:
diff changeset
184 {
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parents:
diff changeset
185 int retval;
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parents:
diff changeset
186
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187 X11_DestroyImage(this, screen);
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parents:
diff changeset
188 if ( flags & SDL_OPENGL ) { /* No image when using GL */
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parents:
diff changeset
189 retval = 0;
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parents:
diff changeset
190 } else {
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parents:
diff changeset
191 retval = X11_SetupImage(this, screen);
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parents:
diff changeset
192 /* We support asynchronous blitting on the display */
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parents:
diff changeset
193 if ( flags & SDL_ASYNCBLIT ) {
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parents:
diff changeset
194 /* This is actually slower on single-CPU systems,
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parents:
diff changeset
195 probably because of CPU contention between the
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parents:
diff changeset
196 X server and the application.
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parents:
diff changeset
197 Note: Is this still true with XFree86 4.0?
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parents:
diff changeset
198 */
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parents:
diff changeset
199 if ( num_CPU() > 1 ) {
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parents:
diff changeset
200 screen->flags |= SDL_ASYNCBLIT;
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parents:
diff changeset
201 }
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parents:
diff changeset
202 }
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parents:
diff changeset
203 }
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parents:
diff changeset
204 return(retval);
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parents:
diff changeset
205 }
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parents:
diff changeset
206
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parents:
diff changeset
207 /* We don't actually allow hardware surfaces other than the main one */
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parents:
diff changeset
208 int X11_AllocHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
209 {
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parents:
diff changeset
210 return(-1);
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parents:
diff changeset
211 }
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parents:
diff changeset
212 void X11_FreeHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
213 {
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parents:
diff changeset
214 return;
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parents:
diff changeset
215 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216
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parents:
diff changeset
217 int X11_LockHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
218 {
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parents:
diff changeset
219 if ( (surface == SDL_VideoSurface) && blit_queued ) {
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
220 XSync(GFX_Display, False);
0
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parents:
diff changeset
221 blit_queued = 0;
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parents:
diff changeset
222 }
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parents:
diff changeset
223 return(0);
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parents:
diff changeset
224 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 void X11_UnlockHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
226 {
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parents:
diff changeset
227 return;
74212992fb08 Initial revision
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parents:
diff changeset
228 }
74212992fb08 Initial revision
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parents:
diff changeset
229
74212992fb08 Initial revision
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parents:
diff changeset
230 int X11_FlipHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
231 {
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parents:
diff changeset
232 return(0);
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parents:
diff changeset
233 }
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parents:
diff changeset
234
74212992fb08 Initial revision
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parents:
diff changeset
235 static void X11_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
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parents:
diff changeset
236 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 int i;
270
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
238
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
239 for (i = 0; i < numrects; ++i) {
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
240 if ( rects[i].w == 0 || rects[i].h == 0 ) { /* Clipped? */
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
241 continue;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242 }
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
243 XPutImage(GFX_Display, SDL_Window, SDL_GC, SDL_Ximage,
270
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
244 rects[i].x, rects[i].y,
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
245 rects[i].x, rects[i].y, rects[i].w, rects[i].h);
0
74212992fb08 Initial revision
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parents:
diff changeset
246 }
74212992fb08 Initial revision
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parents:
diff changeset
247 if ( SDL_VideoSurface->flags & SDL_ASYNCBLIT ) {
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
248 XFlush(GFX_Display);
270
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
249 blit_queued = 1;
0
74212992fb08 Initial revision
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parents:
diff changeset
250 } else {
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
251 XSync(GFX_Display, False);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254
74212992fb08 Initial revision
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parents:
diff changeset
255 static void X11_MITSHMUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 {
74212992fb08 Initial revision
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parents:
diff changeset
257 #ifndef NO_SHARED_MEMORY
74212992fb08 Initial revision
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parents:
diff changeset
258 int i;
74212992fb08 Initial revision
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parents:
diff changeset
259
74212992fb08 Initial revision
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parents:
diff changeset
260 for ( i=0; i<numrects; ++i ) {
270
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
261 if ( rects[i].w == 0 || rects[i].h == 0 ) { /* Clipped? */
0
74212992fb08 Initial revision
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parents:
diff changeset
262 continue;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 }
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
264 XShmPutImage(GFX_Display, SDL_Window, SDL_GC, SDL_Ximage,
0
74212992fb08 Initial revision
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parents:
diff changeset
265 rects[i].x, rects[i].y,
74212992fb08 Initial revision
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parents:
diff changeset
266 rects[i].x, rects[i].y, rects[i].w, rects[i].h,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
267 False);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
268 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 if ( SDL_VideoSurface->flags & SDL_ASYNCBLIT ) {
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
270 XFlush(GFX_Display);
270
37fa1484f71b From: "Mattias Engdeg�rd" <f91-men@nada.kth.se>
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
271 blit_queued = 1;
0
74212992fb08 Initial revision
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parents:
diff changeset
272 } else {
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
273 XSync(GFX_Display, False);
0
74212992fb08 Initial revision
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parents:
diff changeset
274 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275 #endif /* ! NO_SHARED_MEMORY */
74212992fb08 Initial revision
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parents:
diff changeset
276 }
74212992fb08 Initial revision
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parents:
diff changeset
277
74212992fb08 Initial revision
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parents:
diff changeset
278 /* There's a problem with the automatic refreshing of the display.
74212992fb08 Initial revision
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parents:
diff changeset
279 Even though the XVideo code uses the GFX_Display to update the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 video memory, it appears that updating the window asynchronously
74212992fb08 Initial revision
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parents:
diff changeset
281 from a different thread will cause "blackouts" of the window.
74212992fb08 Initial revision
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parents:
diff changeset
282 This is a sort of a hacked workaround for the problem.
74212992fb08 Initial revision
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parents:
diff changeset
283 */
74212992fb08 Initial revision
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parents:
diff changeset
284 static int enable_autorefresh = 1;
74212992fb08 Initial revision
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parents:
diff changeset
285
74212992fb08 Initial revision
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parents:
diff changeset
286 void X11_DisableAutoRefresh(_THIS)
74212992fb08 Initial revision
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parents:
diff changeset
287 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 --enable_autorefresh;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 void X11_EnableAutoRefresh(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
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292 {
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293 ++enable_autorefresh;
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294 }
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295
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296 void X11_RefreshDisplay(_THIS)
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297 {
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298 /* Don't refresh a display that doesn't have an image (like GL)
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299 Instead, post an expose event so the application can refresh.
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300 */
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301 if ( ! SDL_Ximage || (enable_autorefresh <= 0) ) {
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302 SDL_PrivateExpose();
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303 return;
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304 }
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305 #ifndef NO_SHARED_MEMORY
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306 if ( this->UpdateRects == X11_MITSHMUpdate ) {
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307 XShmPutImage(SDL_Display, SDL_Window, SDL_GC, SDL_Ximage,
0
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308 0, 0, 0, 0, this->screen->w, this->screen->h,
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309 False);
270
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310 } else
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311 #endif /* ! NO_SHARED_MEMORY */
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312 {
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313 XPutImage(SDL_Display, SDL_Window, SDL_GC, SDL_Ximage,
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314 0, 0, 0, 0, this->screen->w, this->screen->h);
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315 }
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316 XSync(SDL_Display, False);
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317 }
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318