SDL_GLContext
SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface)
{
EGLint context_attrib_list[] = {
EGL_CONTEXT_CLIENT_VERSION,
1,
EGL_NONE
};
EGLContext egl_context, share_context = EGL_NO_CONTEXT;
if (!_this->egl_data) {
/* The EGL library wasn't loaded, SDL_GetError() should have info */
return NULL;
}
if (_this->gl_config.share_with_current_context) {
share_context = (EGLContext)SDL_GL_GetCurrentContext();
}
/* Bind the API */
if(_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) {
_this->egl_data->eglBindAPI(EGL_OPENGL_ES_API);
if (_this->gl_config.major_version) {
context_attrib_list[1] = _this->gl_config.major_version;
}
egl_context = _this->egl_data->eglCreateContext(_this->egl_data->egl_display,
_this->egl_data->egl_config,
share_context, context_attrib_list);
}
else {
_this->egl_data->eglBindAPI(EGL_OPENGL_API);
egl_context = _this->egl_data->eglCreateContext(_this->egl_data->egl_display,
_this->egl_data->egl_config,
share_context, NULL);
}
if (egl_context == EGL_NO_CONTEXT) {
SDL_SetError("Could not create EGL context");
return NULL;
}
_this->egl_data->egl_swapinterval = 0;
if (SDL_EGL_MakeCurrent(_this, egl_surface, egl_context) < 0) {
SDL_EGL_DeleteContext(_this, egl_context);
SDL_SetError("Could not make EGL context current");
return NULL;
}
return (SDL_GLContext) egl_context;
}
void
Emscripten_GLES_DeleteContext(_THIS, SDL_GLContext context)
{
/*
WebGL contexts can't actually be deleted, so we need to reset it.
ES2 renderer resets state on init anyway, clearing the canvas should be enough
*/
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
SDL_EGL_DeleteContext(_this, context);
}
SDL_GLContext
SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface)
{
EGLint context_attrib_list[] = {
EGL_CONTEXT_CLIENT_VERSION,
1,
EGL_NONE
};
EGLContext egl_context;
if (!_this->egl_data) {
/* The EGL library wasn't loaded, SDL_GetError() should have info */
return NULL;
}
if (_this->gl_config.major_version) {
context_attrib_list[1] = _this->gl_config.major_version;
}
egl_context =
_this->egl_data->eglCreateContext(_this->egl_data->egl_display,
_this->egl_data->egl_config,
EGL_NO_CONTEXT, context_attrib_list);
if (egl_context == EGL_NO_CONTEXT) {
SDL_SetError("Could not create EGL context");
return NULL;
}
_this->egl_data->egl_swapinterval = 0;
if (SDL_EGL_MakeCurrent(_this, egl_surface, egl_context) < 0) {
SDL_EGL_DeleteContext(_this, egl_context);
SDL_SetError("Could not make EGL context current");
return NULL;
}
return (SDL_GLContext) egl_context;
}
void
Wayland_GLES_DeleteContext(_THIS, SDL_GLContext context)
{
SDL_EGL_DeleteContext(_this, context);
WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
}
SDL_GLContext
SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface)
{
/* max 14 values plus terminator. */
EGLint attribs[15];
int attr = 0;
EGLContext egl_context, share_context = EGL_NO_CONTEXT;
EGLint profile_mask = _this->gl_config.profile_mask;
EGLint major_version = _this->gl_config.major_version;
EGLint minor_version = _this->gl_config.minor_version;
SDL_bool profile_es = (profile_mask == SDL_GL_CONTEXT_PROFILE_ES);
if (!_this->egl_data) {
/* The EGL library wasn't loaded, SDL_GetError() should have info */
return NULL;
}
if (_this->gl_config.share_with_current_context) {
share_context = (EGLContext)SDL_GL_GetCurrentContext();
}
/* Set the context version and other attributes. */
if ((major_version < 3 || (minor_version == 0 && profile_es)) &&
_this->gl_config.flags == 0 &&
(profile_mask == 0 || profile_es)) {
/* Create a context without using EGL_KHR_create_context attribs.
* When creating a GLES context without EGL_KHR_create_context we can
* only specify the major version. When creating a desktop GL context
* we can't specify any version, so we only try in that case when the
* version is less than 3.0 (matches SDL's GLX/WGL behavior.)
*/
if (profile_es) {
attribs[attr++] = EGL_CONTEXT_CLIENT_VERSION;
attribs[attr++] = SDL_max(major_version, 1);
}
} else {
#ifdef EGL_KHR_create_context
/* The Major/minor version, context profiles, and context flags can
* only be specified when this extension is available.
*/
if (SDL_EGL_HasExtension(_this, "EGL_KHR_create_context")) {
attribs[attr++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
attribs[attr++] = major_version;
attribs[attr++] = EGL_CONTEXT_MINOR_VERSION_KHR;
attribs[attr++] = minor_version;
/* SDL profile bits match EGL profile bits. */
if (profile_mask != 0 && profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
attribs[attr++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
attribs[attr++] = profile_mask;
}
/* SDL flags match EGL flags. */
if (_this->gl_config.flags != 0) {
attribs[attr++] = EGL_CONTEXT_FLAGS_KHR;
attribs[attr++] = _this->gl_config.flags;
}
} else
#endif /* EGL_KHR_create_context */
{
SDL_SetError("Could not create EGL context (context attributes are not supported)");
return NULL;
}
}
attribs[attr++] = EGL_NONE;
/* Bind the API */
if (profile_es) {
_this->egl_data->eglBindAPI(EGL_OPENGL_ES_API);
} else {
_this->egl_data->eglBindAPI(EGL_OPENGL_API);
}
egl_context = _this->egl_data->eglCreateContext(_this->egl_data->egl_display,
_this->egl_data->egl_config,
share_context, attribs);
if (egl_context == EGL_NO_CONTEXT) {
SDL_SetError("Could not create EGL context");
return NULL;
}
_this->egl_data->egl_swapinterval = 0;
if (SDL_EGL_MakeCurrent(_this, egl_surface, egl_context) < 0) {
SDL_EGL_DeleteContext(_this, egl_context);
SDL_SetError("Could not make EGL context current");
return NULL;
}
return (SDL_GLContext) egl_context;
}
void
WIN_GLES_DeleteContext(_THIS, SDL_GLContext context)
{
SDL_EGL_DeleteContext(_this, context);
WIN_GLES_UnloadLibrary(_this);
}
SDL_GLContext
SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface)
{
/* max 14 values plus terminator. */
EGLint attribs[15];
int attr = 0;
EGLContext egl_context, share_context = EGL_NO_CONTEXT;
EGLint profile_mask = _this->gl_config.profile_mask;
EGLint major_version = _this->gl_config.major_version;
EGLint minor_version = _this->gl_config.minor_version;
SDL_bool profile_es = (profile_mask == SDL_GL_CONTEXT_PROFILE_ES);
if (!_this->egl_data) {
/* The EGL library wasn't loaded, SDL_GetError() should have info */
return NULL;
}
if (_this->gl_config.share_with_current_context) {
share_context = (EGLContext)SDL_GL_GetCurrentContext();
}
#if SDL_VIDEO_DRIVER_ANDROID
if ((_this->gl_config.flags & SDL_GL_CONTEXT_DEBUG_FLAG) != 0) {
/* If SDL_GL_CONTEXT_DEBUG_FLAG is set but EGL_KHR_debug unsupported, unset.
* This is required because some Android devices like to complain about it
* by "silently" failing, logging a hint which could be easily overlooked:
* E/libEGL (26984): validate_display:255 error 3008 (EGL_BAD_DISPLAY)
* The following explicitly checks for EGL_KHR_debug before EGL 1.5
*/
int egl_version_major = _this->egl_data->egl_version_major;
int egl_version_minor = _this->egl_data->egl_version_minor;
if (((egl_version_major < 1) || (egl_version_major == 1 && egl_version_minor < 5)) &&
!SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_debug")) {
/* SDL profile bits match EGL profile bits. */
_this->gl_config.flags &= ~SDL_GL_CONTEXT_DEBUG_FLAG;
}
}
#endif
/* Set the context version and other attributes. */
if ((major_version < 3 || (minor_version == 0 && profile_es)) &&
_this->gl_config.flags == 0 &&
(profile_mask == 0 || profile_es)) {
/* Create a context without using EGL_KHR_create_context attribs.
* When creating a GLES context without EGL_KHR_create_context we can
* only specify the major version. When creating a desktop GL context
* we can't specify any version, so we only try in that case when the
* version is less than 3.0 (matches SDL's GLX/WGL behavior.)
*/
if (profile_es) {
attribs[attr++] = EGL_CONTEXT_CLIENT_VERSION;
attribs[attr++] = SDL_max(major_version, 1);
}
} else {
#ifdef EGL_KHR_create_context
/* The Major/minor version, context profiles, and context flags can
* only be specified when this extension is available.
*/
if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context")) {
attribs[attr++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
attribs[attr++] = major_version;
attribs[attr++] = EGL_CONTEXT_MINOR_VERSION_KHR;
attribs[attr++] = minor_version;
/* SDL profile bits match EGL profile bits. */
if (profile_mask != 0 && profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
attribs[attr++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
attribs[attr++] = profile_mask;
}
/* SDL flags match EGL flags. */
if (_this->gl_config.flags != 0) {
attribs[attr++] = EGL_CONTEXT_FLAGS_KHR;
attribs[attr++] = _this->gl_config.flags;
}
} else
#endif /* EGL_KHR_create_context */
{
SDL_SetError("Could not create EGL context (context attributes are not supported)");
return NULL;
}
}
if (_this->gl_config.no_error) {
#ifdef EGL_KHR_create_context_no_error
if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context_no_error")) {
attribs[attr++] = EGL_CONTEXT_OPENGL_NO_ERROR_KHR;
attribs[attr++] = _this->gl_config.no_error;
} else
#endif
{
SDL_SetError("EGL implementation does not support no_error contexts");
return NULL;
}
}
attribs[attr++] = EGL_NONE;
/* Bind the API */
if (profile_es) {
_this->egl_data->eglBindAPI(EGL_OPENGL_ES_API);
} else {
_this->egl_data->eglBindAPI(EGL_OPENGL_API);
}
egl_context = _this->egl_data->eglCreateContext(_this->egl_data->egl_display,
_this->egl_data->egl_config,
share_context, attribs);
if (egl_context == EGL_NO_CONTEXT) {
SDL_EGL_SetError("Could not create EGL context", "eglCreateContext");
return NULL;
}
_this->egl_data->egl_swapinterval = 0;
if (SDL_EGL_MakeCurrent(_this, egl_surface, egl_context) < 0) {
/* Save the SDL error set by SDL_EGL_MakeCurrent */
char errorText[1024];
SDL_strlcpy(errorText, SDL_GetError(), SDL_arraysize(errorText));
/* Delete the context, which may alter the value returned by SDL_GetError() */
SDL_EGL_DeleteContext(_this, egl_context);
/* Restore the SDL error */
SDL_SetError("%s", errorText);
return NULL;
}
return (SDL_GLContext) egl_context;
}