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egl: Further robustify EGL device initialization process

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Sometimes, the default device fails to initialize, so then we need to fall back to alternatives (eg. GBM)
This commit is contained in:
rdb 2021-02-24 17:30:48 +01:00
parent 3955c71435
commit 2d9cc2dea0
1 changed files with 29 additions and 11 deletions
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40
panda/src/egldisplay/eglGraphicsPipe.cxx
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@ -49,6 +49,8 @@ eglGraphicsPipe() {
<< "EGL client extensions not supported.\n";
}
EGLint major, minor;
//NB. if the X11 display failed to open, _display will be 0, which is a valid
// input to eglGetDisplay - it means to open the default display.
#ifdef HAVE_X11
@ -56,6 +58,12 @@ eglGraphicsPipe() {
#else
_egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
#endif
if (_egl_display && !eglInitialize(_egl_display, &major, &minor)) {
egldisplay_cat.warning()
<< "Couldn't initialize the default EGL display: "
<< get_egl_error_string(eglGetError()) << "\n";
_egl_display = EGL_NO_DISPLAY;
}
if (!_egl_display &&
std::find(extensions.begin(), extensions.end(), "EGL_EXT_platform_device") != extensions.end() &&
@ -65,7 +73,9 @@ eglGraphicsPipe() {
(PFNEGLQUERYDEVICESEXTPROC)eglGetProcAddress("eglQueryDevicesEXT");
EGLint num_devices = 0;
if (eglQueryDevicesEXT(0, nullptr, &num_devices) && num_devices > 0) {
if (eglQueryDevicesEXT != nullptr &&
eglQueryDevicesEXT(0, nullptr, &num_devices) &&
num_devices > 0) {
EGLDeviceEXT *devices = (EGLDeviceEXT *)alloca(sizeof(EGLDeviceEXT) * num_devices);
eglQueryDevicesEXT(num_devices, devices, &num_devices);
@ -77,25 +87,33 @@ eglGraphicsPipe() {
PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT =
(PFNEGLGETPLATFORMDISPLAYEXTPROC)eglGetProcAddress("eglGetPlatformDisplayEXT");
for (EGLint i = 0; i < num_devices && !_egl_display; ++i) {
_egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_DEVICE_EXT, devices[i], nullptr);
}
}
if (eglGetPlatformDisplayEXT != nullptr) {
for (EGLint i = 0; i < num_devices && !_egl_display; ++i) {
_egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_DEVICE_EXT, devices[i], nullptr);
if (!_egl_display) {
egldisplay_cat.error()
<< "Couldn't find a suitable EGL platform device.\n";
if (_egl_display && !eglInitialize(_egl_display, &major, &minor)) {
egldisplay_cat.warning()
<< "Couldn't initialize EGL platform display " << i << ": "
<< get_egl_error_string(eglGetError()) << "\n";
_egl_display = EGL_NO_DISPLAY;
}
}
}
}
}
if (!eglInitialize(_egl_display, nullptr, nullptr)) {
if (!_egl_display) {
egldisplay_cat.error()
<< "Couldn't initialize the EGL display: "
<< get_egl_error_string(eglGetError()) << "\n";
<< "Failed to find or initialize a suitable EGL display connection.\n";
_is_valid = false;
return;
}
if (egldisplay_cat.is_debug()) {
egldisplay_cat.debug()
<< "Successfully initialized EGL display, got version " << major << "." << minor << "\n";
}
#if defined(OPENGLES_1) || defined(OPENGLES_2)
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
egldisplay_cat.error()