src/video/SDL_egl.c
author Sam Lantinga <slouken@libsdl.org>
Fri, 18 May 2018 13:09:30 -0700
changeset 11983 3a50eb90e4b2
parent 11872 e917e911dab6
child 12028 8aa5a79c8805
permissions -rw-r--r--
Merged latest changes from Steam Link app
gabomdq@7659
     1
/*
gabomdq@7659
     2
 *  Simple DirectMedia Layer
slouken@11811
     3
 *  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
gabomdq@7659
     4
 * 
gabomdq@7659
     5
 *  This software is provided 'as-is', without any express or implied
gabomdq@7659
     6
 *  warranty.  In no event will the authors be held liable for any damages
gabomdq@7659
     7
 *  arising from the use of this software.
gabomdq@7659
     8
 * 
gabomdq@7659
     9
 *  Permission is granted to anyone to use this software for any purpose,
gabomdq@7659
    10
 *  including commercial applications, and to alter it and redistribute it
gabomdq@7659
    11
 *  freely, subject to the following restrictions:
gabomdq@7659
    12
 * 
gabomdq@7659
    13
 *  1. The origin of this software must not be misrepresented; you must not
gabomdq@7659
    14
 *     claim that you wrote the original software. If you use this software
gabomdq@7659
    15
 *     in a product, an acknowledgment in the product documentation would be
gabomdq@7659
    16
 *     appreciated but is not required.
gabomdq@7659
    17
 *  2. Altered source versions must be plainly marked as such, and must not be
gabomdq@7659
    18
 *     misrepresented as being the original software.
gabomdq@7659
    19
 *  3. This notice may not be removed or altered from any source distribution.
gabomdq@7659
    20
 */
icculus@8093
    21
#include "../SDL_internal.h"
gabomdq@7659
    22
gabomdq@7659
    23
#if SDL_VIDEO_OPENGL_EGL
gabomdq@7659
    24
slouken@8734
    25
#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
slouken@8734
    26
#include "../core/windows/SDL_windows.h"
slouken@8734
    27
#endif
slouken@10878
    28
#if SDL_VIDEO_DRIVER_ANDROID
slouken@10878
    29
#include <android/native_window.h>
slouken@10878
    30
#endif
slouken@8734
    31
gabomdq@7659
    32
#include "SDL_sysvideo.h"
slouken@11175
    33
#include "SDL_log.h"
gabomdq@8021
    34
#include "SDL_egl_c.h"
gabomdq@8021
    35
#include "SDL_loadso.h"
gabomdq@8021
    36
#include "SDL_hints.h"
gabomdq@7782
    37
slime73@9595
    38
#ifdef EGL_KHR_create_context
slime73@9595
    39
/* EGL_OPENGL_ES3_BIT_KHR was added in version 13 of the extension. */
slime73@9595
    40
#ifndef EGL_OPENGL_ES3_BIT_KHR
slime73@9595
    41
#define EGL_OPENGL_ES3_BIT_KHR 0x00000040
slime73@9595
    42
#endif
slime73@9595
    43
#endif /* EGL_KHR_create_context */
slime73@9595
    44
gabomdq@7753
    45
#if SDL_VIDEO_DRIVER_RPI
gabomdq@7782
    46
/* Raspbian places the OpenGL ES/EGL binaries in a non standard path */
g@11829
    47
#define DEFAULT_EGL ( vc4 ? "libEGL.so.1" : "libbrcmEGL.so" )
g@11829
    48
#define DEFAULT_OGL_ES2 ( vc4 ? "libGLESv2.so.2" : "libbrcmGLESv2.so" )
g@11829
    49
#define ALT_EGL "libEGL.so"
g@11829
    50
#define ALT_OGL_ES2 "libGLESv2.so"
g@11829
    51
#define DEFAULT_OGL_ES_PVR ( vc4 ? "libGLES_CM.so.1" : "libbrcmGLESv2.so" )
g@11829
    52
#define DEFAULT_OGL_ES ( vc4 ? "libGLESv1_CM.so.1" : "libbrcmGLESv2.so" )
gabomdq@7782
    53
slouken@9164
    54
#elif SDL_VIDEO_DRIVER_ANDROID || SDL_VIDEO_DRIVER_VIVANTE
gabomdq@7782
    55
/* Android */
gabomdq@7782
    56
#define DEFAULT_EGL "libEGL.so"
gabomdq@7782
    57
#define DEFAULT_OGL_ES2 "libGLESv2.so"
gabomdq@7782
    58
#define DEFAULT_OGL_ES_PVR "libGLES_CM.so"
gabomdq@7782
    59
#define DEFAULT_OGL_ES "libGLESv1_CM.so"
gabomdq@7782
    60
dludwig@8545
    61
#elif SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
gabomdq@8021
    62
/* EGL AND OpenGL ES support via ANGLE */
gabomdq@8021
    63
#define DEFAULT_EGL "libEGL.dll"
gabomdq@8021
    64
#define DEFAULT_OGL_ES2 "libGLESv2.dll"
gabomdq@8021
    65
#define DEFAULT_OGL_ES_PVR "libGLES_CM.dll"
gabomdq@8021
    66
#define DEFAULT_OGL_ES "libGLESv1_CM.dll"
gabomdq@8021
    67
slouken@11723
    68
#elif SDL_VIDEO_DRIVER_COCOA
slouken@11723
    69
/* EGL AND OpenGL ES support via ANGLE */
slouken@11723
    70
#define DEFAULT_EGL "libEGL.dylib"
slouken@11723
    71
#define DEFAULT_OGL_ES2 "libGLESv2.dylib"
slouken@11723
    72
#define DEFAULT_OGL_ES_PVR "libGLES_CM.dylib"   //???
slouken@11723
    73
#define DEFAULT_OGL_ES "libGLESv1_CM.dylib"     //???
slouken@11723
    74
gabomdq@7753
    75
#else
gabomdq@7782
    76
/* Desktop Linux */
gabomdq@8062
    77
#define DEFAULT_OGL "libGL.so.1"
gabomdq@7753
    78
#define DEFAULT_EGL "libEGL.so.1"
gabomdq@7753
    79
#define DEFAULT_OGL_ES2 "libGLESv2.so.2"
gabomdq@7753
    80
#define DEFAULT_OGL_ES_PVR "libGLES_CM.so.1"
gabomdq@7753
    81
#define DEFAULT_OGL_ES "libGLESv1_CM.so.1"
gabomdq@7753
    82
#endif /* SDL_VIDEO_DRIVER_RPI */
gabomdq@7659
    83
slouken@11363
    84
#ifdef SDL_VIDEO_STATIC_ANGLE
slouken@11363
    85
#define LOAD_FUNC(NAME) \
slouken@11363
    86
_this->egl_data->NAME = (void *)NAME;
slouken@11363
    87
#else
gabomdq@7659
    88
#define LOAD_FUNC(NAME) \
sezero@11872
    89
_this->egl_data->NAME = SDL_LoadFunction(_this->egl_data->dll_handle, #NAME); \
gabomdq@7659
    90
if (!_this->egl_data->NAME) \
gabomdq@7659
    91
{ \
gabomdq@7659
    92
    return SDL_SetError("Could not retrieve EGL function " #NAME); \
gabomdq@7659
    93
}
slouken@11363
    94
#endif
dludwig@10740
    95
dludwig@10740
    96
static const char * SDL_EGL_GetErrorName(EGLint eglErrorCode)
dludwig@10740
    97
{
dludwig@10740
    98
#define SDL_EGL_ERROR_TRANSLATE(e) case e: return #e;
dludwig@10740
    99
    switch (eglErrorCode) {
dludwig@10740
   100
        SDL_EGL_ERROR_TRANSLATE(EGL_SUCCESS);
dludwig@10740
   101
        SDL_EGL_ERROR_TRANSLATE(EGL_NOT_INITIALIZED);
dludwig@10740
   102
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ACCESS);
dludwig@10740
   103
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ALLOC);
dludwig@10740
   104
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ATTRIBUTE);
dludwig@10740
   105
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CONTEXT);
dludwig@10740
   106
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CONFIG);
dludwig@10740
   107
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CURRENT_SURFACE);
dludwig@10740
   108
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_DISPLAY);
dludwig@10740
   109
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_SURFACE);
dludwig@10740
   110
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_MATCH);
dludwig@10740
   111
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_PARAMETER);
dludwig@10740
   112
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_NATIVE_PIXMAP);
dludwig@10740
   113
        SDL_EGL_ERROR_TRANSLATE(EGL_BAD_NATIVE_WINDOW);
dludwig@10740
   114
        SDL_EGL_ERROR_TRANSLATE(EGL_CONTEXT_LOST);
dludwig@10740
   115
    }
dludwig@10740
   116
    return "";
dludwig@10740
   117
}
dludwig@10740
   118
dludwig@10740
   119
int SDL_EGL_SetErrorEx(const char * message, const char * eglFunctionName, EGLint eglErrorCode)
dludwig@10740
   120
{
dludwig@10740
   121
    const char * errorText = SDL_EGL_GetErrorName(eglErrorCode);
dludwig@10740
   122
    char altErrorText[32];
dludwig@10740
   123
    if (errorText[0] == '\0') {
dludwig@10740
   124
        /* An unknown-to-SDL error code was reported.  Report its hexadecimal value, instead of its name. */
dludwig@10740
   125
        SDL_snprintf(altErrorText, SDL_arraysize(altErrorText), "0x%x", (unsigned int)eglErrorCode);
dludwig@10740
   126
        errorText = altErrorText;
dludwig@10740
   127
    }
dludwig@10740
   128
    return SDL_SetError("%s (call to %s failed, reporting an error of %s)", message, eglFunctionName, errorText);
dludwig@10740
   129
}
dludwig@10740
   130
gabomdq@7659
   131
/* EGL implementation of SDL OpenGL ES support */
slouken@11175
   132
typedef enum {
slouken@11175
   133
    SDL_EGL_DISPLAY_EXTENSION,
slouken@11175
   134
    SDL_EGL_CLIENT_EXTENSION
slouken@11175
   135
} SDL_EGL_ExtensionType;
slouken@11175
   136
slouken@11175
   137
static SDL_bool SDL_EGL_HasExtension(_THIS, SDL_EGL_ExtensionType type, const char *ext)
knut@8962
   138
{
slouken@9821
   139
    size_t ext_len;
slouken@11175
   140
    const char *ext_override;
slouken@11175
   141
    const char *egl_extstr;
slouken@11175
   142
    const char *ext_start;
slouken@11175
   143
slouken@11175
   144
    /* Invalid extensions can be rejected early */
slouken@11175
   145
    if (ext == NULL || *ext == 0 || SDL_strchr(ext, ' ') != NULL) {
slouken@11175
   146
        /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "SDL_EGL_HasExtension: Invalid EGL extension"); */
slouken@11175
   147
        return SDL_FALSE;
slouken@11175
   148
    }
slouken@11175
   149
slouken@11175
   150
    /* Extensions can be masked with an environment variable.
slouken@11175
   151
     * Unlike the OpenGL override, this will use the set bits of an integer
slouken@11175
   152
     * to disable the extension.
slouken@11175
   153
     *  Bit   Action
slouken@11175
   154
     *  0     If set, the display extension is masked and not present to SDL.
slouken@11175
   155
     *  1     If set, the client extension is masked and not present to SDL.
slouken@11175
   156
     */
slouken@11175
   157
    ext_override = SDL_getenv(ext);
slouken@11175
   158
    if (ext_override != NULL) {
slouken@11175
   159
        int disable_ext = SDL_atoi(ext_override);
slouken@11175
   160
        if (disable_ext & 0x01 && type == SDL_EGL_DISPLAY_EXTENSION) {
slouken@11175
   161
            return SDL_FALSE;
slouken@11175
   162
        } else if (disable_ext & 0x02 && type == SDL_EGL_CLIENT_EXTENSION) {
slouken@11175
   163
            return SDL_FALSE;
slouken@11175
   164
        }
slouken@11175
   165
    }
knut@8962
   166
knut@8962
   167
    ext_len = SDL_strlen(ext);
slouken@11175
   168
    switch (type) {
slouken@11175
   169
    case SDL_EGL_DISPLAY_EXTENSION:
slouken@11175
   170
        egl_extstr = _this->egl_data->eglQueryString(_this->egl_data->egl_display, EGL_EXTENSIONS);
slouken@11175
   171
        break;
slouken@11175
   172
    case SDL_EGL_CLIENT_EXTENSION:
slouken@11175
   173
        /* EGL_EXT_client_extensions modifies eglQueryString to return client extensions
slouken@11175
   174
         * if EGL_NO_DISPLAY is passed. Implementations without it are required to return NULL.
slouken@11175
   175
         * This behavior is included in EGL 1.5.
slouken@11175
   176
         */
slouken@11175
   177
        egl_extstr = _this->egl_data->eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
slouken@11175
   178
        break;
slouken@11175
   179
    default:
slouken@11175
   180
        /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "SDL_EGL_HasExtension: Invalid extension type"); */
slouken@11175
   181
        return SDL_FALSE;
slouken@11175
   182
    }
knut@8962
   183
slouken@11175
   184
    if (egl_extstr != NULL) {
slouken@11175
   185
        ext_start = egl_extstr;
knut@8962
   186
slouken@11175
   187
        while (*ext_start) {
slouken@11175
   188
            ext_start = SDL_strstr(ext_start, ext);
slouken@11175
   189
            if (ext_start == NULL) {
slouken@11175
   190
                return SDL_FALSE;
slouken@11175
   191
            }
slouken@11175
   192
            /* Check if the match is not just a substring of one of the extensions */
slouken@11175
   193
            if (ext_start == egl_extstr || *(ext_start - 1) == ' ') {
slouken@11175
   194
                if (ext_start[ext_len] == ' ' || ext_start[ext_len] == 0) {
slouken@11175
   195
                    return SDL_TRUE;
knut@8962
   196
                }
slouken@11175
   197
            }
slouken@11175
   198
            /* If the search stopped in the middle of an extension, skip to the end of it */
slouken@11175
   199
            ext_start += ext_len;
slouken@11175
   200
            while (*ext_start != ' ' && *ext_start != 0) {
slouken@11175
   201
                ext_start++;
knut@8962
   202
            }
knut@8962
   203
        }
knut@8962
   204
    }
knut@8962
   205
slouken@11175
   206
    return SDL_FALSE;
knut@8962
   207
}
gabomdq@7659
   208
gabomdq@7659
   209
void *
gabomdq@7659
   210
SDL_EGL_GetProcAddress(_THIS, const char *proc)
gabomdq@7659
   211
{
gabomdq@7659
   212
    static char procname[1024];
gabomdq@7659
   213
    void *retval;
gabomdq@7659
   214
    
gabomdq@7659
   215
    /* eglGetProcAddress is busted on Android http://code.google.com/p/android/issues/detail?id=7681 */
brandon@11516
   216
#if !defined(SDL_VIDEO_DRIVER_ANDROID)
gabomdq@7659
   217
    if (_this->egl_data->eglGetProcAddress) {
gabomdq@7659
   218
        retval = _this->egl_data->eglGetProcAddress(proc);
gabomdq@7659
   219
        if (retval) {
gabomdq@7659
   220
            return retval;
gabomdq@7659
   221
        }
gabomdq@7659
   222
    }
gabomdq@7659
   223
#endif
gabomdq@7659
   224
    
gabomdq@8021
   225
    retval = SDL_LoadFunction(_this->egl_data->egl_dll_handle, proc);
gabomdq@8021
   226
    if (!retval && SDL_strlen(proc) <= 1022) {
gabomdq@7659
   227
        procname[0] = '_';
gabomdq@8021
   228
        SDL_strlcpy(procname + 1, proc, 1022);
gabomdq@8021
   229
        retval = SDL_LoadFunction(_this->egl_data->egl_dll_handle, procname);
gabomdq@7659
   230
    }
gabomdq@7659
   231
    return retval;
gabomdq@7659
   232
}
gabomdq@7659
   233
gabomdq@7659
   234
void
gabomdq@7659
   235
SDL_EGL_UnloadLibrary(_THIS)
gabomdq@7659
   236
{
slouken@7865
   237
    if (_this->egl_data) {
slouken@7865
   238
        if (_this->egl_data->egl_display) {
slouken@7865
   239
            _this->egl_data->eglTerminate(_this->egl_data->egl_display);
slouken@7865
   240
            _this->egl_data->egl_display = NULL;
slouken@7865
   241
        }
slouken@7865
   242
gabomdq@8021
   243
        if (_this->egl_data->dll_handle) {
gabomdq@8021
   244
            SDL_UnloadObject(_this->egl_data->dll_handle);
gabomdq@8021
   245
            _this->egl_data->dll_handle = NULL;
slouken@7865
   246
        }
slouken@7865
   247
        if (_this->egl_data->egl_dll_handle) {
gabomdq@8021
   248
            SDL_UnloadObject(_this->egl_data->egl_dll_handle);
slouken@7865
   249
            _this->egl_data->egl_dll_handle = NULL;
slouken@7865
   250
        }
gabomdq@7659
   251
        
gabomdq@7659
   252
        SDL_free(_this->egl_data);
gabomdq@7659
   253
        _this->egl_data = NULL;
gabomdq@7659
   254
    }
gabomdq@7659
   255
}
gabomdq@7659
   256
gabomdq@7659
   257
int
slouken@11175
   258
SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_display, EGLenum platform)
gabomdq@7659
   259
{
gabomdq@8021
   260
    void *dll_handle = NULL, *egl_dll_handle = NULL; /* The naming is counter intuitive, but hey, I just work here -- Gabriel */
slouken@10461
   261
    const char *path = NULL;
slouken@11175
   262
    int egl_version_major = 0, egl_version_minor = 0;
dludwig@8545
   263
#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
gabomdq@8021
   264
    const char *d3dcompiler;
gabomdq@8021
   265
#endif
connogriofa@11676
   266
#if SDL_VIDEO_DRIVER_RPI
connogriofa@11676
   267
    SDL_bool vc4 = (0 == access("/sys/module/vc4/", F_OK));
connogriofa@11676
   268
#endif
gabomdq@8021
   269
gabomdq@7659
   270
    if (_this->egl_data) {
slouken@11718
   271
        return SDL_SetError("EGL context already created");
gabomdq@7659
   272
    }
slouken@7865
   273
slouken@7865
   274
    _this->egl_data = (struct SDL_EGL_VideoData *) SDL_calloc(1, sizeof(SDL_EGL_VideoData));
slouken@7865
   275
    if (!_this->egl_data) {
slouken@7865
   276
        return SDL_OutOfMemory();
slouken@7865
   277
    }
slouken@7865
   278
dludwig@8545
   279
#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
gabomdq@8021
   280
    d3dcompiler = SDL_GetHint(SDL_HINT_VIDEO_WIN_D3DCOMPILER);
gabomdq@8021
   281
    if (!d3dcompiler) {
slouken@8733
   282
        if (WIN_IsWindowsVistaOrGreater()) {
slouken@8733
   283
            d3dcompiler = "d3dcompiler_46.dll";
slouken@8733
   284
        } else {
slouken@8740
   285
            d3dcompiler = "d3dcompiler_43.dll";
slouken@8733
   286
        }
gabomdq@8021
   287
    }
gabomdq@8021
   288
    if (SDL_strcasecmp(d3dcompiler, "none") != 0) {
slouken@11219
   289
        if (SDL_LoadObject(d3dcompiler) == NULL) {
slouken@11219
   290
            SDL_ClearError();
slouken@11219
   291
        }
gabomdq@8021
   292
    }
slouken@7865
   293
#endif
slouken@7865
   294
slouken@11363
   295
#ifndef SDL_VIDEO_STATIC_ANGLE
gabomdq@7753
   296
    /* A funny thing, loading EGL.so first does not work on the Raspberry, so we load libGL* first */
gabomdq@8021
   297
    path = SDL_getenv("SDL_VIDEO_GL_DRIVER");
gabomdq@8021
   298
    if (path != NULL) {
gabomdq@8021
   299
        egl_dll_handle = SDL_LoadObject(path);
gabomdq@8021
   300
    }
gabomdq@8021
   301
gabomdq@8021
   302
    if (egl_dll_handle == NULL) {
slime73@9595
   303
        if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) {
gabomdq@8062
   304
            if (_this->gl_config.major_version > 1) {
gabomdq@8062
   305
                path = DEFAULT_OGL_ES2;
gabomdq@8062
   306
                egl_dll_handle = SDL_LoadObject(path);
icculus@11462
   307
#ifdef ALT_OGL_ES2
connogriofa@11676
   308
                if (egl_dll_handle == NULL && !vc4) {
icculus@11462
   309
                    path = ALT_OGL_ES2;
icculus@11462
   310
                    egl_dll_handle = SDL_LoadObject(path);
icculus@11462
   311
                }
icculus@11462
   312
#endif
icculus@11462
   313
slime73@9595
   314
            } else {
gabomdq@8062
   315
                path = DEFAULT_OGL_ES;
gabomdq@8062
   316
                egl_dll_handle = SDL_LoadObject(path);
gabomdq@8062
   317
                if (egl_dll_handle == NULL) {
gabomdq@8062
   318
                    path = DEFAULT_OGL_ES_PVR;
gabomdq@8062
   319
                    egl_dll_handle = SDL_LoadObject(path);
gabomdq@8062
   320
                }
connogriofa@11676
   321
#ifdef ALT_OGL_ES2
connogriofa@11676
   322
                if (egl_dll_handle == NULL && !vc4) {
connogriofa@11676
   323
                    path = ALT_OGL_ES2;
connogriofa@11676
   324
                    egl_dll_handle = SDL_LoadObject(path);
connogriofa@11676
   325
                }
connogriofa@11676
   326
#endif
gabomdq@8062
   327
            }
gabomdq@8062
   328
        }
gabomdq@8062
   329
#ifdef DEFAULT_OGL         
gabomdq@8062
   330
        else {
gabomdq@8062
   331
            path = DEFAULT_OGL;
gabomdq@8021
   332
            egl_dll_handle = SDL_LoadObject(path);
gabomdq@8021
   333
        }
gabomdq@8062
   334
#endif        
gabomdq@7753
   335
    }
slouken@7865
   336
    _this->egl_data->egl_dll_handle = egl_dll_handle;
gabomdq@7753
   337
gabomdq@7753
   338
    if (egl_dll_handle == NULL) {
gabomdq@8062
   339
        return SDL_SetError("Could not initialize OpenGL / GLES library");
gabomdq@7753
   340
    }
gabomdq@8021
   341
gabomdq@7753
   342
    /* Loading libGL* in the previous step took care of loading libEGL.so, but we future proof by double checking */
gabomdq@8021
   343
    if (egl_path != NULL) {
gabomdq@8021
   344
        dll_handle = SDL_LoadObject(egl_path);
gabomdq@8021
   345
    }   
gabomdq@8105
   346
    /* Try loading a EGL symbol, if it does not work try the default library paths */
gabomdq@8872
   347
    if (dll_handle == NULL || SDL_LoadFunction(dll_handle, "eglChooseConfig") == NULL) {
gabomdq@8021
   348
        if (dll_handle != NULL) {
gabomdq@8021
   349
            SDL_UnloadObject(dll_handle);
gabomdq@8021
   350
        }
gabomdq@8021
   351
        path = SDL_getenv("SDL_VIDEO_EGL_DRIVER");
gabomdq@7659
   352
        if (path == NULL) {
gabomdq@7659
   353
            path = DEFAULT_EGL;
gabomdq@7659
   354
        }
gabomdq@8021
   355
        dll_handle = SDL_LoadObject(path);
icculus@11462
   356
icculus@11462
   357
#ifdef ALT_EGL
connogriofa@11676
   358
        if (dll_handle == NULL && !vc4) {
icculus@11462
   359
            path = ALT_EGL;
icculus@11462
   360
            dll_handle = SDL_LoadObject(path);
icculus@11462
   361
        }
icculus@11462
   362
#endif
icculus@11462
   363
gabomdq@8872
   364
        if (dll_handle == NULL || SDL_LoadFunction(dll_handle, "eglChooseConfig") == NULL) {
gabomdq@8872
   365
            if (dll_handle != NULL) {
gabomdq@8872
   366
                SDL_UnloadObject(dll_handle);
gabomdq@8872
   367
            }
gabomdq@8021
   368
            return SDL_SetError("Could not load EGL library");
gabomdq@8021
   369
        }
gabomdq@8763
   370
        SDL_ClearError();
gabomdq@7753
   371
    }
slouken@11363
   372
#endif
slouken@7865
   373
gabomdq@8021
   374
    _this->egl_data->dll_handle = dll_handle;
gabomdq@7659
   375
gabomdq@7659
   376
    /* Load new function pointers */
gabomdq@7659
   377
    LOAD_FUNC(eglGetDisplay);
gabomdq@7659
   378
    LOAD_FUNC(eglInitialize);
gabomdq@7659
   379
    LOAD_FUNC(eglTerminate);
gabomdq@7659
   380
    LOAD_FUNC(eglGetProcAddress);
gabomdq@7659
   381
    LOAD_FUNC(eglChooseConfig);
gabomdq@7659
   382
    LOAD_FUNC(eglGetConfigAttrib);
gabomdq@7659
   383
    LOAD_FUNC(eglCreateContext);
gabomdq@7659
   384
    LOAD_FUNC(eglDestroyContext);
slouken@11719
   385
    LOAD_FUNC(eglCreatePbufferSurface);
gabomdq@7659
   386
    LOAD_FUNC(eglCreateWindowSurface);
gabomdq@7659
   387
    LOAD_FUNC(eglDestroySurface);
gabomdq@7659
   388
    LOAD_FUNC(eglMakeCurrent);
gabomdq@7659
   389
    LOAD_FUNC(eglSwapBuffers);
gabomdq@7659
   390
    LOAD_FUNC(eglSwapInterval);
gabomdq@7659
   391
    LOAD_FUNC(eglWaitNative);
gabomdq@7659
   392
    LOAD_FUNC(eglWaitGL);
gabomdq@8062
   393
    LOAD_FUNC(eglBindAPI);
knut@8962
   394
    LOAD_FUNC(eglQueryString);
dludwig@10740
   395
    LOAD_FUNC(eglGetError);
dludwig@10740
   396
slouken@11175
   397
    if (_this->egl_data->eglQueryString) {
slouken@11175
   398
        /* EGL 1.5 allows querying for client version */
slouken@11175
   399
        const char *egl_version = _this->egl_data->eglQueryString(EGL_NO_DISPLAY, EGL_VERSION);
slouken@11175
   400
        if (egl_version != NULL) {
slouken@11175
   401
            if (SDL_sscanf(egl_version, "%d.%d", &egl_version_major, &egl_version_minor) != 2) {
slouken@11175
   402
                egl_version_major = 0;
slouken@11175
   403
                egl_version_minor = 0;
slouken@11175
   404
                SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not parse EGL version string: %s", egl_version);
slouken@11175
   405
            }
slouken@11175
   406
        }
slouken@11175
   407
    }
slouken@11175
   408
slouken@11175
   409
    if (egl_version_major == 1 && egl_version_minor == 5) {
slouken@11175
   410
        LOAD_FUNC(eglGetPlatformDisplay);
slouken@11175
   411
    }
slouken@11175
   412
slouken@11175
   413
    _this->egl_data->egl_display = EGL_NO_DISPLAY;
dludwig@8663
   414
#if !defined(__WINRT__)
slouken@11175
   415
    if (platform) {
slouken@11175
   416
        if (egl_version_major == 1 && egl_version_minor == 5) {
icculus@11418
   417
            _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplay(platform, (void *)(size_t)native_display, NULL);
slouken@11175
   418
        } else {
slouken@11175
   419
            if (SDL_EGL_HasExtension(_this, SDL_EGL_CLIENT_EXTENSION, "EGL_EXT_platform_base")) {
sezero@11872
   420
                _this->egl_data->eglGetPlatformDisplayEXT = SDL_EGL_GetProcAddress(_this, "eglGetPlatformDisplayEXT");
slouken@11175
   421
                if (_this->egl_data->eglGetPlatformDisplayEXT) {
icculus@11418
   422
                    _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplayEXT(platform, (void *)(size_t)native_display, NULL);
slouken@11175
   423
                }
slouken@11175
   424
            }
slouken@11175
   425
        }
slouken@11175
   426
    }
slouken@11175
   427
    /* Try the implementation-specific eglGetDisplay even if eglGetPlatformDisplay fails */
slouken@11175
   428
    if (_this->egl_data->egl_display == EGL_NO_DISPLAY) {
slouken@11175
   429
        _this->egl_data->egl_display = _this->egl_data->eglGetDisplay(native_display);
slouken@11175
   430
    }
slouken@11175
   431
    if (_this->egl_data->egl_display == EGL_NO_DISPLAY) {
gabomdq@7659
   432
        return SDL_SetError("Could not get EGL display");
gabomdq@7659
   433
    }
gabomdq@7659
   434
    
gabomdq@7659
   435
    if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
gabomdq@7659
   436
        return SDL_SetError("Could not initialize EGL");
gabomdq@7659
   437
    }
dludwig@8663
   438
#endif
gabomdq@7659
   439
gabomdq@7659
   440
    if (path) {
gabomdq@8021
   441
        SDL_strlcpy(_this->gl_config.driver_path, path, sizeof(_this->gl_config.driver_path) - 1);
gabomdq@7659
   442
    } else {
gabomdq@8021
   443
        *_this->gl_config.driver_path = '\0';
gabomdq@7659
   444
    }
gabomdq@7659
   445
    
gabomdq@8041
   446
    return 0;
gabomdq@7659
   447
}
gabomdq@7659
   448
slouken@11983
   449
#ifdef DUMP_EGL_CONFIG
slouken@11983
   450
slouken@11983
   451
#define ATTRIBUTE(_attr) { _attr, #_attr }
slouken@11983
   452
slouken@11983
   453
typedef struct {
slouken@11983
   454
    EGLint attribute;
slouken@11983
   455
    char const* name;
slouken@11983
   456
} Attribute;
slouken@11983
   457
slouken@11983
   458
Attribute attributes[] = {
slouken@11983
   459
        ATTRIBUTE( EGL_BUFFER_SIZE ),
slouken@11983
   460
        ATTRIBUTE( EGL_ALPHA_SIZE ),
slouken@11983
   461
        ATTRIBUTE( EGL_BLUE_SIZE ),
slouken@11983
   462
        ATTRIBUTE( EGL_GREEN_SIZE ),
slouken@11983
   463
        ATTRIBUTE( EGL_RED_SIZE ),
slouken@11983
   464
        ATTRIBUTE( EGL_DEPTH_SIZE ),
slouken@11983
   465
        ATTRIBUTE( EGL_STENCIL_SIZE ),
slouken@11983
   466
        ATTRIBUTE( EGL_CONFIG_CAVEAT ),
slouken@11983
   467
        ATTRIBUTE( EGL_CONFIG_ID ),
slouken@11983
   468
        ATTRIBUTE( EGL_LEVEL ),
slouken@11983
   469
        ATTRIBUTE( EGL_MAX_PBUFFER_HEIGHT ),
slouken@11983
   470
        ATTRIBUTE( EGL_MAX_PBUFFER_WIDTH ),
slouken@11983
   471
        ATTRIBUTE( EGL_MAX_PBUFFER_PIXELS ),
slouken@11983
   472
        ATTRIBUTE( EGL_NATIVE_RENDERABLE ),
slouken@11983
   473
        ATTRIBUTE( EGL_NATIVE_VISUAL_ID ),
slouken@11983
   474
        ATTRIBUTE( EGL_NATIVE_VISUAL_TYPE ),
slouken@11983
   475
        ATTRIBUTE( EGL_SAMPLES ),
slouken@11983
   476
        ATTRIBUTE( EGL_SAMPLE_BUFFERS ),
slouken@11983
   477
        ATTRIBUTE( EGL_SURFACE_TYPE ),
slouken@11983
   478
        ATTRIBUTE( EGL_TRANSPARENT_TYPE ),
slouken@11983
   479
        ATTRIBUTE( EGL_TRANSPARENT_BLUE_VALUE ),
slouken@11983
   480
        ATTRIBUTE( EGL_TRANSPARENT_GREEN_VALUE ),
slouken@11983
   481
        ATTRIBUTE( EGL_TRANSPARENT_RED_VALUE ),
slouken@11983
   482
        ATTRIBUTE( EGL_BIND_TO_TEXTURE_RGB ),
slouken@11983
   483
        ATTRIBUTE( EGL_BIND_TO_TEXTURE_RGBA ),
slouken@11983
   484
        ATTRIBUTE( EGL_MIN_SWAP_INTERVAL ),
slouken@11983
   485
        ATTRIBUTE( EGL_MAX_SWAP_INTERVAL ),
slouken@11983
   486
        ATTRIBUTE( EGL_LUMINANCE_SIZE ),
slouken@11983
   487
        ATTRIBUTE( EGL_ALPHA_MASK_SIZE ),
slouken@11983
   488
        ATTRIBUTE( EGL_COLOR_BUFFER_TYPE ),
slouken@11983
   489
        ATTRIBUTE( EGL_RENDERABLE_TYPE ),
slouken@11983
   490
        ATTRIBUTE( EGL_MATCH_NATIVE_PIXMAP ),
slouken@11983
   491
        ATTRIBUTE( EGL_CONFORMANT ),
slouken@11983
   492
};
slouken@11983
   493
slouken@11983
   494
slouken@11983
   495
static void dumpconfig(_THIS, EGLConfig config)
slouken@11983
   496
{
slouken@11983
   497
    int attr;
slouken@11983
   498
    for (attr = 0 ; attr<sizeof(attributes)/sizeof(Attribute) ; attr++) {
slouken@11983
   499
        EGLint value;
slouken@11983
   500
        _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, config, attributes[attr].attribute, &value);
slouken@11983
   501
        SDL_Log("\t%-32s: %10d (0x%08x)\n", attributes[attr].name, value, value);
slouken@11983
   502
    }
slouken@11983
   503
}
slouken@11983
   504
slouken@11983
   505
#endif /* DUMP_EGL_CONFIG */
slouken@11983
   506
gabomdq@7659
   507
int
gabomdq@7659
   508
SDL_EGL_ChooseConfig(_THIS) 
gabomdq@7659
   509
{
slouken@11175
   510
/* 64 seems nice. */
gabomdq@7659
   511
    EGLint attribs[64];
gabomdq@8021
   512
    EGLint found_configs = 0, value;
slouken@11175
   513
#ifdef SDL_VIDEO_DRIVER_KMSDRM
slouken@11175
   514
    /* Intel EGL on KMS/DRM (al least) returns invalid configs that confuse the bitdiff search used */
slouken@11175
   515
    /* later in this function, so we simply use the first one when using the KMSDRM driver for now. */
slouken@11175
   516
    EGLConfig configs[1];
slouken@11175
   517
#else
gabomdq@8015
   518
    /* 128 seems even nicer here */
gabomdq@8015
   519
    EGLConfig configs[128];
slouken@11175
   520
#endif
gabomdq@8021
   521
    int i, j, best_bitdiff = -1, bitdiff;
slouken@11175
   522
   
gabomdq@7659
   523
    if (!_this->egl_data) {
gabomdq@7659
   524
        /* The EGL library wasn't loaded, SDL_GetError() should have info */
gabomdq@7659
   525
        return -1;
gabomdq@7659
   526
    }
gabomdq@7659
   527
  
gabomdq@7659
   528
    /* Get a valid EGL configuration */
gabomdq@7659
   529
    i = 0;
gabomdq@7659
   530
    attribs[i++] = EGL_RED_SIZE;
gabomdq@7659
   531
    attribs[i++] = _this->gl_config.red_size;
gabomdq@7659
   532
    attribs[i++] = EGL_GREEN_SIZE;
gabomdq@7659
   533
    attribs[i++] = _this->gl_config.green_size;
gabomdq@7659
   534
    attribs[i++] = EGL_BLUE_SIZE;
gabomdq@7659
   535
    attribs[i++] = _this->gl_config.blue_size;
gabomdq@7659
   536
    
gabomdq@7659
   537
    if (_this->gl_config.alpha_size) {
gabomdq@7659
   538
        attribs[i++] = EGL_ALPHA_SIZE;
gabomdq@7659
   539
        attribs[i++] = _this->gl_config.alpha_size;
gabomdq@7659
   540
    }
gabomdq@7659
   541
    
gabomdq@7659
   542
    if (_this->gl_config.buffer_size) {
gabomdq@7659
   543
        attribs[i++] = EGL_BUFFER_SIZE;
gabomdq@7659
   544
        attribs[i++] = _this->gl_config.buffer_size;
gabomdq@7659
   545
    }
gabomdq@7659
   546
    
gabomdq@7659
   547
    attribs[i++] = EGL_DEPTH_SIZE;
gabomdq@7659
   548
    attribs[i++] = _this->gl_config.depth_size;
gabomdq@7659
   549
    
gabomdq@7659
   550
    if (_this->gl_config.stencil_size) {
gabomdq@7659
   551
        attribs[i++] = EGL_STENCIL_SIZE;
gabomdq@7659
   552
        attribs[i++] = _this->gl_config.stencil_size;
gabomdq@7659
   553
    }
gabomdq@7659
   554
    
gabomdq@7659
   555
    if (_this->gl_config.multisamplebuffers) {
gabomdq@7659
   556
        attribs[i++] = EGL_SAMPLE_BUFFERS;
gabomdq@7659
   557
        attribs[i++] = _this->gl_config.multisamplebuffers;
gabomdq@7659
   558
    }
gabomdq@7659
   559
    
gabomdq@7659
   560
    if (_this->gl_config.multisamplesamples) {
gabomdq@7659
   561
        attribs[i++] = EGL_SAMPLES;
gabomdq@7659
   562
        attribs[i++] = _this->gl_config.multisamplesamples;
gabomdq@7659
   563
    }
slime73@9595
   564
gabomdq@7659
   565
    attribs[i++] = EGL_RENDERABLE_TYPE;
slime73@9595
   566
    if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) {
slime73@9595
   567
#ifdef EGL_KHR_create_context
slime73@9595
   568
        if (_this->gl_config.major_version >= 3 &&
slouken@11175
   569
            SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context")) {
slime73@9595
   570
            attribs[i++] = EGL_OPENGL_ES3_BIT_KHR;
slime73@9595
   571
        } else
slime73@9595
   572
#endif
slime73@9595
   573
        if (_this->gl_config.major_version >= 2) {
gabomdq@8062
   574
            attribs[i++] = EGL_OPENGL_ES2_BIT;
gabomdq@8062
   575
        } else {
gabomdq@8062
   576
            attribs[i++] = EGL_OPENGL_ES_BIT;
gabomdq@8062
   577
        }
gabomdq@8062
   578
        _this->egl_data->eglBindAPI(EGL_OPENGL_ES_API);
slime73@9595
   579
    } else {
gabomdq@8062
   580
        attribs[i++] = EGL_OPENGL_BIT;
gabomdq@8062
   581
        _this->egl_data->eglBindAPI(EGL_OPENGL_API);
gabomdq@7659
   582
    }
slime73@9827
   583
slouken@11677
   584
    if (_this->egl_data->egl_surfacetype) {
slouken@11677
   585
        attribs[i++] = EGL_SURFACE_TYPE;
slouken@11677
   586
        attribs[i++] = _this->egl_data->egl_surfacetype;
slouken@11677
   587
    }
slouken@11677
   588
gabomdq@7659
   589
    attribs[i++] = EGL_NONE;
slime73@9827
   590
gabomdq@7659
   591
    if (_this->egl_data->eglChooseConfig(_this->egl_data->egl_display,
gabomdq@7659
   592
        attribs,
gabomdq@8015
   593
        configs, SDL_arraysize(configs),
gabomdq@7659
   594
        &found_configs) == EGL_FALSE ||
gabomdq@7659
   595
        found_configs == 0) {
dludwig@10740
   596
        return SDL_EGL_SetError("Couldn't find matching EGL config", "eglChooseConfig");
gabomdq@7659
   597
    }
slime73@9827
   598
gabomdq@8015
   599
    /* eglChooseConfig returns a number of configurations that match or exceed the requested attribs. */
gabomdq@8015
   600
    /* From those, we select the one that matches our requirements more closely via a makeshift algorithm */
gabomdq@8021
   601
slime73@9595
   602
    for (i = 0; i < found_configs; i++ ) {
gabomdq@8015
   603
        bitdiff = 0;
gabomdq@8021
   604
        for (j = 0; j < SDL_arraysize(attribs) - 1; j += 2) {
gabomdq@8015
   605
            if (attribs[j] == EGL_NONE) {
gabomdq@8015
   606
               break;
gabomdq@8015
   607
            }
gabomdq@8015
   608
            
gabomdq@8015
   609
            if ( attribs[j+1] != EGL_DONT_CARE && (
gabomdq@8015
   610
                attribs[j] == EGL_RED_SIZE ||
gabomdq@8015
   611
                attribs[j] == EGL_GREEN_SIZE ||
gabomdq@8015
   612
                attribs[j] == EGL_BLUE_SIZE ||
gabomdq@8015
   613
                attribs[j] == EGL_ALPHA_SIZE ||
gabomdq@8015
   614
                attribs[j] == EGL_DEPTH_SIZE ||
gabomdq@8015
   615
                attribs[j] == EGL_STENCIL_SIZE)) {
gabomdq@8015
   616
                _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, configs[i], attribs[j], &value);
gabomdq@8015
   617
                bitdiff += value - attribs[j + 1]; /* value is always >= attrib */
gabomdq@8015
   618
            }
gabomdq@8015
   619
        }
gabomdq@8015
   620
gabomdq@8015
   621
        if (bitdiff < best_bitdiff || best_bitdiff == -1) {
gabomdq@8015
   622
            _this->egl_data->egl_config = configs[i];
gabomdq@8015
   623
            
gabomdq@8015
   624
            best_bitdiff = bitdiff;
gabomdq@8015
   625
        }
slime73@9595
   626
slime73@9595
   627
        if (bitdiff == 0) {
slime73@9595
   628
            break; /* we found an exact match! */
slime73@9595
   629
        }
gabomdq@8015
   630
    }
slouken@11983
   631
slouken@11983
   632
#ifdef DUMP_EGL_CONFIG
slouken@11983
   633
    dumpconfig(_this, _this->egl_data->egl_config);
slouken@11983
   634
#endif
gabomdq@8015
   635
    
gabomdq@7659
   636
    return 0;
gabomdq@7659
   637
}
gabomdq@7659
   638
gabomdq@7659
   639
SDL_GLContext
gabomdq@7659
   640
SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface)
gabomdq@7659
   641
{
slime73@9595
   642
    /* max 14 values plus terminator. */
slime73@9595
   643
    EGLint attribs[15];
slime73@9595
   644
    int attr = 0;
slime73@9595
   645
gabomdq@8061
   646
    EGLContext egl_context, share_context = EGL_NO_CONTEXT;
slime73@9595
   647
    EGLint profile_mask = _this->gl_config.profile_mask;
slime73@9637
   648
    EGLint major_version = _this->gl_config.major_version;
slime73@9637
   649
    EGLint minor_version = _this->gl_config.minor_version;
slime73@9637
   650
    SDL_bool profile_es = (profile_mask == SDL_GL_CONTEXT_PROFILE_ES);
slime73@9595
   651
gabomdq@7659
   652
    if (!_this->egl_data) {
gabomdq@7659
   653
        /* The EGL library wasn't loaded, SDL_GetError() should have info */
gabomdq@7659
   654
        return NULL;
gabomdq@7659
   655
    }
slime73@9595
   656
gabomdq@8061
   657
    if (_this->gl_config.share_with_current_context) {
gabomdq@8061
   658
        share_context = (EGLContext)SDL_GL_GetCurrentContext();
gabomdq@7659
   659
    }
slime73@9595
   660
slime73@9595
   661
    /* Set the context version and other attributes. */
slime73@9637
   662
    if ((major_version < 3 || (minor_version == 0 && profile_es)) &&
slime73@9637
   663
        _this->gl_config.flags == 0 &&
slime73@9637
   664
        (profile_mask == 0 || profile_es)) {
slime73@9637
   665
        /* Create a context without using EGL_KHR_create_context attribs.
slime73@9637
   666
         * When creating a GLES context without EGL_KHR_create_context we can
slime73@9637
   667
         * only specify the major version. When creating a desktop GL context
slime73@9637
   668
         * we can't specify any version, so we only try in that case when the
slime73@9637
   669
         * version is less than 3.0 (matches SDL's GLX/WGL behavior.)
slime73@9637
   670
         */
slime73@9637
   671
        if (profile_es) {
slime73@9595
   672
            attribs[attr++] = EGL_CONTEXT_CLIENT_VERSION;
slime73@9637
   673
            attribs[attr++] = SDL_max(major_version, 1);
slime73@9595
   674
        }
slime73@9595
   675
    } else {
slime73@9595
   676
#ifdef EGL_KHR_create_context
slime73@9595
   677
        /* The Major/minor version, context profiles, and context flags can
slime73@9595
   678
         * only be specified when this extension is available.
slime73@9595
   679
         */
slouken@11175
   680
        if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context")) {
slime73@9595
   681
            attribs[attr++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
slime73@9637
   682
            attribs[attr++] = major_version;
slime73@9595
   683
            attribs[attr++] = EGL_CONTEXT_MINOR_VERSION_KHR;
slime73@9637
   684
            attribs[attr++] = minor_version;
slime73@9595
   685
slime73@9595
   686
            /* SDL profile bits match EGL profile bits. */
slime73@9595
   687
            if (profile_mask != 0 && profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
slime73@9595
   688
                attribs[attr++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
slime73@9595
   689
                attribs[attr++] = profile_mask;
slime73@9595
   690
            }
slime73@9595
   691
slime73@9595
   692
            /* SDL flags match EGL flags. */
slime73@9595
   693
            if (_this->gl_config.flags != 0) {
slime73@9595
   694
                attribs[attr++] = EGL_CONTEXT_FLAGS_KHR;
slime73@9595
   695
                attribs[attr++] = _this->gl_config.flags;
slime73@9595
   696
            }
slime73@9595
   697
        } else
slime73@9595
   698
#endif /* EGL_KHR_create_context */
slime73@9595
   699
        {
slime73@9595
   700
            SDL_SetError("Could not create EGL context (context attributes are not supported)");
slime73@9595
   701
            return NULL;
slime73@9595
   702
        }
slime73@9595
   703
    }
slime73@9595
   704
flibitijibibo@11347
   705
    if (_this->gl_config.no_error) {
flibitijibibo@11347
   706
#ifdef EGL_KHR_create_context_no_error
flibitijibibo@11347
   707
        if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context_no_error")) {
flibitijibibo@11347
   708
            attribs[attr++] = EGL_CONTEXT_OPENGL_NO_ERROR_KHR;
flibitijibibo@11347
   709
            attribs[attr++] = _this->gl_config.no_error;
flibitijibibo@11347
   710
        } else
flibitijibibo@11347
   711
#endif
flibitijibibo@11347
   712
        {
flibitijibibo@11347
   713
            SDL_SetError("EGL implementation does not support no_error contexts");
flibitijibibo@11347
   714
            return NULL;
flibitijibibo@11347
   715
        }
flibitijibibo@11347
   716
    }
flibitijibibo@11347
   717
slime73@9595
   718
    attribs[attr++] = EGL_NONE;
slime73@9595
   719
gabomdq@8062
   720
    /* Bind the API */
slime73@9637
   721
    if (profile_es) {
gabomdq@8062
   722
        _this->egl_data->eglBindAPI(EGL_OPENGL_ES_API);
slime73@9595
   723
    } else {
slime73@9595
   724
        _this->egl_data->eglBindAPI(EGL_OPENGL_API);
slime73@9595
   725
    }
gabomdq@7659
   726
slime73@9595
   727
    egl_context = _this->egl_data->eglCreateContext(_this->egl_data->egl_display,
slime73@9595
   728
                                      _this->egl_data->egl_config,
slime73@9595
   729
                                      share_context, attribs);
knut@8962
   730
gabomdq@7659
   731
    if (egl_context == EGL_NO_CONTEXT) {
dludwig@10740
   732
        SDL_EGL_SetError("Could not create EGL context", "eglCreateContext");
gabomdq@7659
   733
        return NULL;
gabomdq@7659
   734
    }
slime73@9595
   735
gabomdq@7659
   736
    _this->egl_data->egl_swapinterval = 0;
slime73@9595
   737
gabomdq@7659
   738
    if (SDL_EGL_MakeCurrent(_this, egl_surface, egl_context) < 0) {
dludwig@10740
   739
        /* Save the SDL error set by SDL_EGL_MakeCurrent */
dludwig@10740
   740
        char errorText[1024];
dludwig@10740
   741
        SDL_strlcpy(errorText, SDL_GetError(), SDL_arraysize(errorText));
dludwig@10740
   742
dludwig@10740
   743
        /* Delete the context, which may alter the value returned by SDL_GetError() */
gabomdq@7659
   744
        SDL_EGL_DeleteContext(_this, egl_context);
dludwig@10740
   745
dludwig@10740
   746
        /* Restore the SDL error */
dludwig@10740
   747
        SDL_SetError("%s", errorText);
dludwig@10740
   748
gabomdq@7659
   749
        return NULL;
gabomdq@7659
   750
    }
slime73@9595
   751
gabomdq@7659
   752
    return (SDL_GLContext) egl_context;
gabomdq@7659
   753
}
gabomdq@7659
   754
gabomdq@7659
   755
int
gabomdq@7659
   756
SDL_EGL_MakeCurrent(_THIS, EGLSurface egl_surface, SDL_GLContext context)
gabomdq@7659
   757
{
gabomdq@7679
   758
    EGLContext egl_context = (EGLContext) context;
gabomdq@7679
   759
gabomdq@7659
   760
    if (!_this->egl_data) {
gabomdq@7659
   761
        return SDL_SetError("OpenGL not initialized");
gabomdq@7659
   762
    }
gabomdq@7659
   763
    
gabomdq@7659
   764
    /* The android emulator crashes badly if you try to eglMakeCurrent 
gabomdq@7659
   765
     * with a valid context and invalid surface, so we have to check for both here.
gabomdq@7659
   766
     */
gabomdq@7659
   767
    if (!egl_context || !egl_surface) {
gabomdq@7659
   768
         _this->egl_data->eglMakeCurrent(_this->egl_data->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
slime73@9595
   769
    } else {
gabomdq@7659
   770
        if (!_this->egl_data->eglMakeCurrent(_this->egl_data->egl_display,
gabomdq@7659
   771
            egl_surface, egl_surface, egl_context)) {
dludwig@10740
   772
            return SDL_EGL_SetError("Unable to make EGL context current", "eglMakeCurrent");
gabomdq@7659
   773
        }
gabomdq@7659
   774
    }
gabomdq@7659
   775
      
gabomdq@7659
   776
    return 0;
gabomdq@7659
   777
}
gabomdq@7659
   778
gabomdq@7659
   779
int
gabomdq@7659
   780
SDL_EGL_SetSwapInterval(_THIS, int interval)
gabomdq@7659
   781
{
gabomdq@7679
   782
    EGLBoolean status;
gabomdq@7679
   783
    
gabomdq@7702
   784
    if (!_this->egl_data) {
gabomdq@7702
   785
        return SDL_SetError("EGL not initialized");
gabomdq@7659
   786
    }
gabomdq@7659
   787
    
gabomdq@7659
   788
    status = _this->egl_data->eglSwapInterval(_this->egl_data->egl_display, interval);
gabomdq@7659
   789
    if (status == EGL_TRUE) {
gabomdq@7659
   790
        _this->egl_data->egl_swapinterval = interval;
gabomdq@7659
   791
        return 0;
gabomdq@7659
   792
    }
gabomdq@7659
   793
    
dludwig@10740
   794
    return SDL_EGL_SetError("Unable to set the EGL swap interval", "eglSwapInterval");
gabomdq@7659
   795
}
gabomdq@7659
   796
gabomdq@7659
   797
int
gabomdq@7659
   798
SDL_EGL_GetSwapInterval(_THIS)
gabomdq@7659
   799
{
gabomdq@7702
   800
    if (!_this->egl_data) {
philipp@10169
   801
        SDL_SetError("EGL not initialized");
philipp@10169
   802
        return 0;
gabomdq@7659
   803
    }
gabomdq@7659
   804
    
gabomdq@7659
   805
    return _this->egl_data->egl_swapinterval;
gabomdq@7659
   806
}
gabomdq@7659
   807
slouken@10693
   808
int
gabomdq@7659
   809
SDL_EGL_SwapBuffers(_THIS, EGLSurface egl_surface)
gabomdq@7659
   810
{
slouken@10693
   811
    if (!_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, egl_surface)) {
dludwig@10740
   812
        return SDL_EGL_SetError("unable to show color buffer in an OS-native window", "eglSwapBuffers");
slouken@10693
   813
    }
slouken@10693
   814
    return 0;
gabomdq@7659
   815
}
gabomdq@7659
   816
gabomdq@7659
   817
void
gabomdq@7659
   818
SDL_EGL_DeleteContext(_THIS, SDL_GLContext context)
gabomdq@7659
   819
{
gabomdq@7679
   820
    EGLContext egl_context = (EGLContext) context;
gabomdq@7679
   821
gabomdq@7659
   822
    /* Clean up GLES and EGL */
gabomdq@7659
   823
    if (!_this->egl_data) {
gabomdq@7659
   824
        return;
gabomdq@7659
   825
    }
gabomdq@7659
   826
    
gabomdq@7896
   827
    if (egl_context != NULL && egl_context != EGL_NO_CONTEXT) {
gabomdq@7659
   828
        SDL_EGL_MakeCurrent(_this, NULL, NULL);
gabomdq@7659
   829
        _this->egl_data->eglDestroyContext(_this->egl_data->egl_display, egl_context);
gabomdq@7659
   830
    }
gabomdq@7659
   831
        
gabomdq@7659
   832
}
gabomdq@7659
   833
gabomdq@7659
   834
EGLSurface *
gabomdq@7659
   835
SDL_EGL_CreateSurface(_THIS, NativeWindowType nw) 
gabomdq@7659
   836
{
deveee@11830
   837
    /* max 2 values plus terminator. */
deveee@11830
   838
    EGLint attribs[3];
deveee@11830
   839
    int attr = 0;
deveee@11830
   840
	
dludwig@10740
   841
    EGLSurface * surface;
dludwig@10740
   842
gabomdq@8041
   843
    if (SDL_EGL_ChooseConfig(_this) != 0) {
slouken@8045
   844
        return EGL_NO_SURFACE;
gabomdq@8041
   845
    }
gabomdq@8041
   846
    
slouken@10878
   847
#if SDL_VIDEO_DRIVER_ANDROID
slouken@8976
   848
    {
slouken@8976
   849
        /* Android docs recommend doing this!
slouken@8976
   850
         * Ref: http://developer.android.com/reference/android/app/NativeActivity.html 
slouken@8976
   851
         */
slouken@8976
   852
        EGLint format;
slouken@8976
   853
        _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display,
slouken@8976
   854
                                            _this->egl_data->egl_config, 
slouken@8976
   855
                                            EGL_NATIVE_VISUAL_ID, &format);
gabomdq@8971
   856
slouken@8976
   857
        ANativeWindow_setBuffersGeometry(nw, 0, 0, format);
slouken@8976
   858
    }
gabomdq@8971
   859
#endif    
deveee@11830
   860
    if (_this->gl_config.framebuffer_srgb_capable) {
deveee@11830
   861
#ifdef EGL_KHR_gl_colorspace
deveee@11830
   862
        if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_gl_colorspace")) {
deveee@11830
   863
            attribs[attr++] = EGL_GL_COLORSPACE_KHR;
deveee@11830
   864
            attribs[attr++] = EGL_GL_COLORSPACE_SRGB_KHR;
deveee@11830
   865
        } else
deveee@11830
   866
#endif
deveee@11830
   867
        {
deveee@11830
   868
            SDL_SetError("EGL implementation does not support sRGB system framebuffers");
deveee@11830
   869
            return EGL_NO_SURFACE;
deveee@11830
   870
        }
deveee@11830
   871
    }
deveee@11830
   872
	
deveee@11830
   873
    attribs[attr++] = EGL_NONE;
gabomdq@8971
   874
    
dludwig@10740
   875
    surface = _this->egl_data->eglCreateWindowSurface(
gabomdq@7659
   876
            _this->egl_data->egl_display,
gabomdq@7659
   877
            _this->egl_data->egl_config,
deveee@11830
   878
            nw, &attribs[0]);
dludwig@10740
   879
    if (surface == EGL_NO_SURFACE) {
dludwig@10740
   880
        SDL_EGL_SetError("unable to create an EGL window surface", "eglCreateWindowSurface");
dludwig@10740
   881
    }
dludwig@10740
   882
    return surface;
gabomdq@7659
   883
}
gabomdq@7659
   884
gabomdq@7659
   885
void
gabomdq@7659
   886
SDL_EGL_DestroySurface(_THIS, EGLSurface egl_surface) 
gabomdq@7659
   887
{
gabomdq@7659
   888
    if (!_this->egl_data) {
gabomdq@7659
   889
        return;
gabomdq@7659
   890
    }
gabomdq@7659
   891
    
gabomdq@7659
   892
    if (egl_surface != EGL_NO_SURFACE) {
gabomdq@7659
   893
        _this->egl_data->eglDestroySurface(_this->egl_data->egl_display, egl_surface);
gabomdq@7659
   894
    }
gabomdq@7659
   895
}
gabomdq@7659
   896
gabomdq@7659
   897
#endif /* SDL_VIDEO_OPENGL_EGL */
gabomdq@7659
   898
gabomdq@7659
   899
/* vi: set ts=4 sw=4 expandtab: */
philipp@11192
   900