Mercurial > sdl-ios-xcode

annotate src/video/x11/SDL_x11opengles.c @ 3473:7bdc10624cba

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This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 07:14:21 +0000
parents d559edc85610
children f7b03b6838cb
rev   line source
3190
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21
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22 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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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 if (!_this->gles_data->egl_display) {
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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;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 _this->gl_config.driver_loaded = 1;
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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) {
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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);
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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, "");
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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
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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)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 /* 64 seems nice. */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 EGLint attribs[64];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 EGLint found_configs = 0;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 VisualID visual_id;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 int i;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181
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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) {
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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)
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298 {
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299 int retval;
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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: */