diff --git a/direct/src/distributed/DistributedObject.py b/direct/src/distributed/DistributedObject.py
index 5ddd900fa3..23fe76625c 100644
--- a/direct/src/distributed/DistributedObject.py
+++ b/direct/src/distributed/DistributedObject.py
@@ -124,7 +124,7 @@ class DistributedObject(DistributedObjectBase):
                     if field is not None:
                         p = DCPacker()
                         p.setUnpackData(field.getDefaultValue())
-                        len = p.rawUnpackUint16()/4
+                        len = p.rawUnpackUint16() // 4
                         for i in range(len):
                             zone = int(p.rawUnpackUint32())
                             autoInterests.add(zone)
diff --git a/direct/src/filter/FilterManager.py b/direct/src/filter/FilterManager.py
index 2a0dfb2852..4faa25548b 100644
--- a/direct/src/filter/FilterManager.py
+++ b/direct/src/filter/FilterManager.py
@@ -300,7 +300,7 @@ class FilterManager(DirectObject):
 
         return quad
 
-    def createBuffer(self, name, xsize, ysize, texgroup, depthbits=1, fbprops=None):
+    def createBuffer(self, name, xsize, ysize, texgroup, depthbits=True, fbprops=None):
         """ Low-level buffer creation.  Not intended for public use. """
 
         winprops = WindowProperties()
@@ -308,7 +308,12 @@ class FilterManager(DirectObject):
         props = FrameBufferProperties(FrameBufferProperties.getDefault())
         props.setBackBuffers(0)
         props.setRgbColor(1)
-        props.setDepthBits(depthbits)
+        if depthbits is True:
+            # Respect depth-bits from Config.prc
+            if props.getDepthBits() == 0:
+                props.setDepthBits(1)
+        else:
+            props.setDepthBits(depthbits)
         props.setStereo(self.win.isStereo())
         if fbprops is not None:
             props.addProperties(fbprops)
diff --git a/panda/src/egldisplay/eglGraphicsPipe.cxx b/panda/src/egldisplay/eglGraphicsPipe.cxx
index 18c2317664..e3df7e8a97 100644
--- a/panda/src/egldisplay/eglGraphicsPipe.cxx
+++ b/panda/src/egldisplay/eglGraphicsPipe.cxx
@@ -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: "
@@ -165,10 +220,9 @@ make_output(const std::string &name,
     // Early failure - if we are sure that this buffer WONT meet specs, we can
     // bail out early.
     if ((flags & BF_fb_props_optional)==0) {
-      if ((fb_prop.get_indexed_color() > 0)||
-          (fb_prop.get_back_buffers() > 0)||
-          (fb_prop.get_accum_bits() > 0)||
-          (fb_prop.get_multisamples() > 0)) {
+      if (fb_prop.get_indexed_color() > 0 ||
+          fb_prop.get_back_buffers() > 0 ||
+          fb_prop.get_accum_bits() > 0) {
         return nullptr;
       }
     }
diff --git a/panda/src/pgui/pgItem.cxx b/panda/src/pgui/pgItem.cxx
index 663522204a..74201d01b0 100644
--- a/panda/src/pgui/pgItem.cxx
+++ b/panda/src/pgui/pgItem.cxx
@@ -30,6 +30,7 @@
 #include "boundingSphere.h"
 #include "boundingBox.h"
 #include "config_mathutil.h"
+#include "pipeline.h"
 
 #ifdef HAVE_AUDIO
 #include "audioSound.h"