TheCloud/panda3d
1
0
Fork 0
mirror of https://github.com/panda3d/panda3d.git synced 2025-09-27 23:34:57 -04:00
Code Issues Packages Projects Releases Wiki Activity

egl: Fall back to EGL_EXT_platform_device for device selection

Browse Source 
See #557
This commit is contained in:
rdb 2021-02-24 11:41:42 +01:00
parent 7f20bcd8e0
commit 2e38ca1042
1 changed files with 55 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
panda/src/egldisplay/eglGraphicsPipe.cxx
View File

@ -19,6 +19,8 @@
#include "config_egldisplay.h"
#include "frameBufferProperties.h"
#include <EGL/eglext.h>
TypeHandle eglGraphicsPipe::_type_handle;
/**
@ -26,6 +28,27 @@ TypeHandle eglGraphicsPipe::_type_handle;
*/
eglGraphicsPipe::
eglGraphicsPipe() {
// Check for client extensions.
vector_string extensions;
const char *ext_ptr = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (ext_ptr != nullptr) {
extract_words(ext_ptr, extensions);
if (egldisplay_cat.is_debug()) {
std::ostream &out = egldisplay_cat.debug()
<< "Supported EGL client extensions:\n";
for (const std::string &extension : extensions) {
out << " " << extension << "\n";
}
}
}
else if (egldisplay_cat.is_debug()) {
eglGetError();
egldisplay_cat.debug()
<< "EGL client extensions not supported.\n";
}
//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
@ -33,6 +56,38 @@ eglGraphicsPipe() {
#else
_egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
#endif
if (!_egl_display &&
std::find(extensions.begin(), extensions.end(), "EGL_EXT_platform_device") != extensions.end() &&
std::find(extensions.begin(), extensions.end(), "EGL_EXT_device_enumeration") != extensions.end()) {
PFNEGLQUERYDEVICESEXTPROC eglQueryDevicesEXT =
(PFNEGLQUERYDEVICESEXTPROC)eglGetProcAddress("eglQueryDevicesEXT");
EGLint num_devices = 0;
if (eglQueryDevicesEXT(0, nullptr, &num_devices) && num_devices > 0) {
EGLDeviceEXT *devices = (EGLDeviceEXT *)alloca(sizeof(EGLDeviceEXT) * num_devices);
eglQueryDevicesEXT(num_devices, devices, &num_devices);
if (egldisplay_cat.is_debug()) {
egldisplay_cat.debug()
<< "Found " << num_devices << " EGL devices.\n";
}
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 (!_egl_display) {
egldisplay_cat.error()
<< "Couldn't find a suitable EGL platform device.\n";
}
}
if (!eglInitialize(_egl_display, nullptr, nullptr)) {
egldisplay_cat.error()
<< "Couldn't initialize the EGL display: "