diff --git a/panda/src/glstuff/glGraphicsBuffer_src.cxx b/panda/src/glstuff/glGraphicsBuffer_src.cxx
index 06c26a590d..8fbba8f79d 100644
--- a/panda/src/glstuff/glGraphicsBuffer_src.cxx
+++ b/panda/src/glstuff/glGraphicsBuffer_src.cxx
@@ -921,20 +921,37 @@ bind_slot(int layer, bool rb_resize, Texture **attach, RenderTexturePlane slot,
         if (_fb_properties.get_alpha_bits() == 0) {
           if (_fb_properties.get_srgb_color()) {
             gl_format = GL_SRGB8;
+          } else if (_fb_properties.get_color_bits() > 16 * 3 ||
+                     _fb_properties.get_red_bits() > 16 ||
+                     _fb_properties.get_green_bits() > 16 ||
+                     _fb_properties.get_blue_bits() > 16) {
+            // 32-bit, which is always floating-point.
+            if (_fb_properties.get_blue_bits() > 0 ||
+                _fb_properties.get_color_bits() == 1 ||
+                _fb_properties.get_color_bits() > 32 * 2) {
+              gl_format = GL_RGB32F;
+            } else if (_fb_properties.get_green_bits() > 0 ||
+                       _fb_properties.get_color_bits() > 32) {
+              gl_format = GL_RG32F;
+            } else {
+              gl_format = GL_R32F;
+            }
           } else if (_fb_properties.get_float_color()) {
-            if (_fb_properties.get_color_bits() > 16 * 3) {
-              gl_format = GL_RGB32F_ARB;
+            // 16-bit floating-point.
+            if (_fb_properties.get_blue_bits() > 0 ||
+                _fb_properties.get_color_bits() == 1 ||
+                _fb_properties.get_color_bits() > 16 * 2) {
+              gl_format = GL_RGB16F;
+            } else if (_fb_properties.get_green_bits() > 0 ||
+                       _fb_properties.get_color_bits() > 16) {
+              gl_format = GL_RG16F;
             } else {
-              gl_format = GL_RGB16F_ARB;
+              gl_format = GL_R16F;
             }
+          } else if (_fb_properties.get_color_bits() > 8 * 3) {
+            gl_format = GL_RGB16_EXT;
           } else {
-            if (_fb_properties.get_color_bits() > 16 * 3) {
-              gl_format = GL_RGB32F_ARB;
-            } else if (_fb_properties.get_color_bits() > 8 * 3) {
-              gl_format = GL_RGB16_EXT;
-            } else {
-              gl_format = GL_RGB;
-            }
+            gl_format = GL_RGB;
           }
         } else {
           if (_fb_properties.get_srgb_color()) {
diff --git a/panda/src/pgraph/billboardEffect.cxx b/panda/src/pgraph/billboardEffect.cxx
index d6319021f1..ff44e11202 100644
--- a/panda/src/pgraph/billboardEffect.cxx
+++ b/panda/src/pgraph/billboardEffect.cxx
@@ -375,5 +375,7 @@ fillin(DatagramIterator &scan, BamReader *manager) {
   if (manager->get_file_minor_ver() >= 43) {
     _look_at.fillin(scan, manager);
     _fixed_depth = scan.get_bool();
+  } else {
+    _fixed_depth = false;
   }
 }
diff --git a/panda/src/x11display/x11GraphicsWindow.cxx b/panda/src/x11display/x11GraphicsWindow.cxx
index ad0f8e44dd..be28a6254f 100644
--- a/panda/src/x11display/x11GraphicsWindow.cxx
+++ b/panda/src/x11display/x11GraphicsWindow.cxx
@@ -508,23 +508,33 @@ process_events() {
     changed_properties = true;
   }
 
-  if (properties.has_foreground() && _properties.get_mouse_mode() == WindowProperties::M_confined) {
+  if (properties.has_foreground() && (
+        _properties.get_mouse_mode() == WindowProperties::M_confined ||
+        _dga_mouse_enabled)) {
+       x11GraphicsPipe *x11_pipe;
+       DCAST_INTO_V(x11_pipe, _pipe);
+
       // Focus has changed, let's let go of the pointer if we've grabbed or re-grab it if needed
       if (properties.get_foreground()) {
         // Window is going to the foreground, re-grab the pointer
         X11_Cursor cursor = None;
         if (_properties.get_cursor_hidden()) {
-            x11GraphicsPipe *x11_pipe;
-            DCAST_INTO_V(x11_pipe, _pipe);
             cursor = x11_pipe->get_hidden_cursor();
         }
 
         XGrabPointer(_display, _xwindow, True, 0, GrabModeAsync, GrabModeAsync,
                     _xwindow, cursor, CurrentTime);
+        if (_dga_mouse_enabled) {
+          x11_pipe->enable_relative_mouse();
+        }
       }
       else {
         // window is leaving the foreground, ungrab the pointer
-        XUngrabPointer(_display, CurrentTime);
+        if (_dga_mouse_enabled) {
+          x11_pipe->disable_relative_mouse();
+        } else if (_properties.get_mouse_mode() == WindowProperties::M_confined) {
+          XUngrabPointer(_display, CurrentTime);
+        }
       }
   }