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annotate src/video/x11/SDL_x11opengles.c @ 5267:b530ef003506

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Happy 2011! :)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Feb 2011 22:37:15 -0800
parents f7b03b6838cb
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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b530ef003506 Happy 2011! :)
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3 Copyright (C) 1997-2011 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21
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22 Open Pandora SDL driver
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23 Copyright (C) 2009 David Carré
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24 (cpasjuste@gmail.com)
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25 */
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26 #include "SDL_config.h"
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27
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28 #if SDL_VIDEO_OPENGL_ES
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29
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30 #include "SDL_x11video.h"
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31 #include "SDL_x11opengles.h"
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32
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33 #define DEFAULT_OPENGL "/usr/lib/libGLES_CM.so"
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34
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35 #define LOAD_FUNC(NAME) \
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36 *((void**)&_this->gles_data->NAME) = dlsym(handle, #NAME); \
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37 if (!_this->gles_data->NAME) \
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38 { \
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39 SDL_SetError("Could not retrieve EGL function " #NAME); \
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40 return -1; \
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41 }
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42
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43 /* GLES implementation of SDL OpenGL support */
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44
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45 void *
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46 X11_GLES_GetProcAddress(_THIS, const char *proc)
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47 {
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48 static char procname[1024];
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49 void *handle;
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50 void *retval;
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51
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52 handle = _this->gl_config.dll_handle;
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53 if (_this->gles_data->eglGetProcAddress) {
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54 retval = _this->gles_data->eglGetProcAddress(proc);
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55 if (retval) {
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56 return retval;
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57 }
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58 }
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59 #if defined(__OpenBSD__) && !defined(__ELF__)
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60 #undef dlsym(x,y);
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61 #endif
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62 retval = dlsym(handle, proc);
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63 if (!retval && strlen(proc) <= 1022) {
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64 procname[0] = '_';
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65 strcpy(procname + 1, proc);
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66 retval = dlsym(handle, procname);
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67 }
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68 return retval;
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69 }
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70
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71 void
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72 X11_GLES_UnloadLibrary(_THIS)
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73 {
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74 if (_this->gl_config.driver_loaded) {
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75 _this->gles_data->eglTerminate(_this->gles_data->egl_display);
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76
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77 dlclose(_this->gl_config.dll_handle);
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78
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79 _this->gles_data->eglGetProcAddress = NULL;
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80 _this->gles_data->eglChooseConfig = NULL;
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81 _this->gles_data->eglCreateContext = NULL;
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82 _this->gles_data->eglCreateWindowSurface = NULL;
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83 _this->gles_data->eglDestroyContext = NULL;
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84 _this->gles_data->eglDestroySurface = NULL;
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85 _this->gles_data->eglMakeCurrent = NULL;
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86 _this->gles_data->eglSwapBuffers = NULL;
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87 _this->gles_data->eglGetDisplay = NULL;
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88 _this->gles_data->eglTerminate = NULL;
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89
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90 _this->gl_config.dll_handle = NULL;
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91 _this->gl_config.driver_loaded = 0;
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92 }
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93 }
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94
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95 int
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96 X11_GLES_LoadLibrary(_THIS, const char *path)
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97 {
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98 void *handle;
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99 int dlopen_flags;
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100
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101 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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102
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103 if (_this->gles_data->egl_active) {
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104 SDL_SetError("OpenGL ES context already created");
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105 return -1;
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106 }
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107 #ifdef RTLD_GLOBAL
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108 dlopen_flags = RTLD_LAZY | RTLD_GLOBAL;
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109 #else
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110 dlopen_flags = RTLD_LAZY;
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111 #endif
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112 handle = dlopen(path, dlopen_flags);
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113 /* Catch the case where the application isn't linked with EGL */
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114 if ((dlsym(handle, "eglChooseConfig") == NULL) && (path == NULL)) {
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115
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116 dlclose(handle);
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117 path = getenv("SDL_VIDEO_GL_DRIVER");
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118 if (path == NULL) {
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119 path = DEFAULT_OPENGL;
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120 }
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121 handle = dlopen(path, dlopen_flags);
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122 }
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123
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124 if (handle == NULL) {
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125 SDL_SetError("Could not load OpenGL ES/EGL library");
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126 return -1;
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127 }
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128
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129 /* Unload the old driver and reset the pointers */
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130 X11_GLES_UnloadLibrary(_this);
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131
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132 /* Load new function pointers */
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133 LOAD_FUNC(eglGetDisplay);
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134 LOAD_FUNC(eglInitialize);
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135 LOAD_FUNC(eglTerminate);
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136 LOAD_FUNC(eglGetProcAddress);
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137 LOAD_FUNC(eglChooseConfig);
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138 LOAD_FUNC(eglGetConfigAttrib);
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139 LOAD_FUNC(eglCreateContext);
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140 LOAD_FUNC(eglDestroyContext);
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141 LOAD_FUNC(eglCreateWindowSurface);
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142 LOAD_FUNC(eglDestroySurface);
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143 LOAD_FUNC(eglMakeCurrent);
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144 LOAD_FUNC(eglSwapBuffers);
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145
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146 _this->gles_data->egl_display =
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147 _this->gles_data->eglGetDisplay((NativeDisplayType) data->display);
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148
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149 if (!_this->gles_data->egl_display) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 SDL_SetError("Could not get EGL display");
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 return -1;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 if (_this->gles_data->
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 eglInitialize(_this->gles_data->egl_display, NULL,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 NULL) != EGL_TRUE) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 SDL_SetError("Could not initialize EGL");
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 return -1;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 _this->gl_config.dll_handle = handle;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 _this->gl_config.driver_loaded = 1;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 if (path) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 strncpy(_this->gl_config.driver_path, path,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 sizeof(_this->gl_config.driver_path) - 1);
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 } else {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 strcpy(_this->gl_config.driver_path, "");
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 return 0;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 XVisualInfo *
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 X11_GLES_GetVisual(_THIS, Display * display, int screen)
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 /* 64 seems nice. */
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 EGLint attribs[64];
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 EGLint found_configs = 0;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 VisualID visual_id;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 int i;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 /* load the gl driver from a default path */
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183 if (!_this->gl_config.driver_loaded) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 /* no driver has been loaded, use default (ourselves) */
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185 if (X11_GLES_LoadLibrary(_this, NULL) < 0) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
186 return NULL;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
187 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
189
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 i = 0;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191 attribs[i++] = EGL_RED_SIZE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192 attribs[i++] = _this->gl_config.red_size;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
193 attribs[i++] = EGL_GREEN_SIZE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
194 attribs[i++] = _this->gl_config.green_size;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 attribs[i++] = EGL_BLUE_SIZE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
196 attribs[i++] = _this->gl_config.blue_size;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198 if (_this->gl_config.alpha_size) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 attribs[i++] = EGL_ALPHA_SIZE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200 attribs[i++] = _this->gl_config.alpha_size;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 if (_this->gl_config.buffer_size) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 attribs[i++] = EGL_BUFFER_SIZE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205 attribs[i++] = _this->gl_config.buffer_size;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
207
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 attribs[i++] = EGL_DEPTH_SIZE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 attribs[i++] = _this->gl_config.depth_size;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 if (_this->gl_config.stencil_size) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 attribs[i++] = EGL_STENCIL_SIZE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 attribs[i++] = _this->gl_config.stencil_size;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 if (_this->gl_config.multisamplebuffers) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 attribs[i++] = EGL_SAMPLE_BUFFERS;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 attribs[i++] = _this->gl_config.multisamplebuffers;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 if (_this->gl_config.multisamplesamples) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 attribs[i++] = EGL_SAMPLES;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 attribs[i++] = _this->gl_config.multisamplesamples;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 attribs[i++] = EGL_NONE;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 if (_this->gles_data->eglChooseConfig(_this->gles_data->egl_display,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 attribs,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
230 &_this->gles_data->egl_config, 1,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 &found_configs) == EGL_FALSE ||
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 found_configs == 0) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 SDL_SetError("Couldn't find matching EGL config");
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 return NULL;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 if (_this->gles_data->eglGetConfigAttrib(_this->gles_data->egl_display,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 _this->gles_data->egl_config,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 EGL_NATIVE_VISUAL_ID,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 (EGLint *) & visual_id) ==
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 EGL_FALSE || !visual_id) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 /* Use the default visual when all else fails */
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 XVisualInfo vi_in;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 int out_count;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 vi_in.screen = screen;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 _this->gles_data->egl_visualinfo = XGetVisualInfo(display,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 VisualScreenMask,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 &vi_in, &out_count);
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 } else {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 XVisualInfo vi_in;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 int out_count;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254 vi_in.screen = screen;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 vi_in.visualid = visual_id;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 _this->gles_data->egl_visualinfo = XGetVisualInfo(display,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 VisualScreenMask |
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 VisualIDMask,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259 &vi_in, &out_count);
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 return _this->gles_data->egl_visualinfo;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 SDL_GLContext
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 X11_GLES_CreateContext(_THIS, SDL_Window * window)
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 int retval;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269 SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 Display *display = data->videodata->display;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 XSync(display, False);
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
273
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 _this->gles_data->egl_context =
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
276 _this->gles_data->eglCreateContext(_this->gles_data->egl_display,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
277 _this->gles_data->egl_config,
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 EGL_NO_CONTEXT, NULL);
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279 XSync(display, False);
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281 if (_this->gles_data->egl_context == EGL_NO_CONTEXT) {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282 SDL_SetError("Could not create EGL context");
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
283 return NULL;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
284 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286 _this->gles_data->egl_active = 1;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
287
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
288 if (_this->gles_data->egl_active)
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
289 retval = 1;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
290 else
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
291 retval = 0;
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
292
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
293 return (retval);
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
294 }
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
295
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
296 int
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
297 X11_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
298 {
c68d2ca5970f Added missing files for OpenGL ES support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
299 int retval;
c68d2ca5970f Added missing files for OpenGL ES support
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300
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301 // SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
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302 // Display *display = data->videodata->display;
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303
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304 retval = 1;
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305 if (!_this->gles_data->eglMakeCurrent(_this->gles_data->egl_display,
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306 _this->gles_data->egl_surface,
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307 _this->gles_data->egl_surface,
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308 _this->gles_data->egl_context)) {
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309 SDL_SetError("Unable to make EGL context current");
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310 retval = -1;
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311 }
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312 // XSync(display, False);
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313
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314 return (retval);
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315 }
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316
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317 static int swapinterval = -1;
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318 int
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319 X11_GLES_SetSwapInterval(_THIS, int interval)
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320 {
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321 return 0;
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322 }
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323
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324 int
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325 X11_GLES_GetSwapInterval(_THIS)
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326 {
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327 return 0;
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328 }
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329
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330 void
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331 X11_GLES_SwapWindow(_THIS, SDL_Window * window)
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332 {
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333 _this->gles_data->eglSwapBuffers(_this->gles_data->egl_display,
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334 _this->gles_data->egl_surface);
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335 }
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336
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337 void
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338 X11_GLES_DeleteContext(_THIS, SDL_GLContext context)
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339 {
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340 /* Clean up GLES and EGL */
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341 if (_this->gles_data->egl_context != EGL_NO_CONTEXT ||
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342 _this->gles_data->egl_surface != EGL_NO_SURFACE) {
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343 _this->gles_data->eglMakeCurrent(_this->gles_data->egl_display,
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344 EGL_NO_SURFACE, EGL_NO_SURFACE,
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345 EGL_NO_CONTEXT);
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346
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347 if (_this->gles_data->egl_context != EGL_NO_CONTEXT) {
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348 _this->gles_data->eglDestroyContext(_this->gles_data->egl_display,
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349 _this->gles_data->
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350 egl_context);
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351 _this->gles_data->egl_context = EGL_NO_CONTEXT;
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352 }
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353
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354 if (_this->gles_data->egl_surface != EGL_NO_SURFACE) {
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355 _this->gles_data->eglDestroySurface(_this->gles_data->egl_display,
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356 _this->gles_data->
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357 egl_surface);
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358 _this->gles_data->egl_surface = EGL_NO_SURFACE;
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359 }
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360 }
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361 _this->gles_data->egl_active = 0;
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362
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363 /* crappy fix */
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364 X11_GLES_UnloadLibrary(_this);
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365
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366 }
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367
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368 #endif /* SDL_VIDEO_OPENGL_ES */
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369
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370 /* vi: set ts=4 sw=4 expandtab: */