diff --git a/direct/src/distributed/cConnectionRepository.cxx b/direct/src/distributed/cConnectionRepository.cxx
index 970c09c108..fe384776bd 100644
--- a/direct/src/distributed/cConnectionRepository.cxx
+++ b/direct/src/distributed/cConnectionRepository.cxx
@@ -687,11 +687,7 @@ handle_update_field() {
       PyObject_GetAttrString(_python_repository, "doId2do");
     nassertr(doId2do != nullptr, false);
 
-    #ifdef USE_PYTHON_2_2_OR_EARLIER
-    PyObject *doId = PyInt_FromLong(do_id);
-    #else
     PyObject *doId = PyLong_FromUnsignedLong(do_id);
-    #endif
     PyObject *distobj = PyDict_GetItem(doId2do, doId);
     Py_DECREF(doId);
     Py_DECREF(doId2do);
@@ -778,11 +774,7 @@ handle_update_field_owner() {
       PyObject_GetAttrString(_python_repository, "doId2ownerView");
     nassertr(doId2ownerView != nullptr, false);
 
-    #ifdef USE_PYTHON_2_2_OR_EARLIER
-    PyObject *doId = PyInt_FromLong(do_id);
-    #else
     PyObject *doId = PyLong_FromUnsignedLong(do_id);
-    #endif
 
     // pass the update to the owner view first
     PyObject *distobjOV = PyDict_GetItem(doId2ownerView, doId);
@@ -887,7 +879,7 @@ describe_message(std::ostream &out, const string &prefix,
 
   packer.set_unpack_data((const char *)dg.get_data(), dg.get_length(), false);
   CHANNEL_TYPE do_id;
-  int msg_type;
+  unsigned int msg_type;
   bool is_update = false;
   string full_prefix = "CR::" + prefix;
 
@@ -913,7 +905,12 @@ describe_message(std::ostream &out, const string &prefix,
 
     #ifdef HAVE_PYTHON
     if (_python_repository != nullptr) {
-      PyObject *msgId = PyLong_FromLong(msg_type);
+#if defined(HAVE_THREADS) && !defined(SIMPLE_THREADS)
+      PyGILState_STATE gstate;
+      gstate = PyGILState_Ensure();
+#endif
+
+      PyObject *msgId = PyLong_FromUnsignedLong(msg_type);
       nassertv(msgId != nullptr);
       PyObject *methodName = PyUnicode_FromString("_getMsgName");
       nassertv(methodName != nullptr);
@@ -927,6 +924,10 @@ describe_message(std::ostream &out, const string &prefix,
       Py_DECREF(methodName);
       Py_DECREF(msgId);
       Py_DECREF(result);
+
+#if defined(HAVE_THREADS) && !defined(SIMPLE_THREADS)
+      PyGILState_Release(gstate);
+#endif
     }
     #endif
     if (msgName.length() == 0) {
@@ -945,15 +946,16 @@ describe_message(std::ostream &out, const string &prefix,
 
     #ifdef HAVE_PYTHON
     if (_python_repository != nullptr) {
+#if defined(HAVE_THREADS) && !defined(SIMPLE_THREADS)
+      PyGILState_STATE gstate;
+      gstate = PyGILState_Ensure();
+#endif
+
       PyObject *doId2do =
         PyObject_GetAttrString(_python_repository, "doId2do");
       nassertv(doId2do != nullptr);
 
-      #ifdef USE_PYTHON_2_2_OR_EARLIER
-      PyObject *doId = PyInt_FromLong(do_id);
-      #else
       PyObject *doId = PyLong_FromUnsignedLong(do_id);
-      #endif
       PyObject *distobj = PyDict_GetItem(doId2do, doId);
       Py_DECREF(doId);
       Py_DECREF(doId2do);
@@ -969,6 +971,10 @@ describe_message(std::ostream &out, const string &prefix,
         dclass = (DCClass *)PyLong_AsVoidPtr(dclass_this);
         Py_DECREF(dclass_this);
       }
+
+#if defined(HAVE_THREADS) && !defined(SIMPLE_THREADS)
+      PyGILState_Release(gstate);
+#endif
     }
     #endif  // HAVE_PYTHON
 
diff --git a/models/icons/minusnode.gif b/models/icons/minusnode.gif
index 24b7e916f7..22587539ad 100644
Binary files a/models/icons/minusnode.gif and b/models/icons/minusnode.gif differ
diff --git a/panda/src/cocoadisplay/cocoaGraphicsWindow.mm b/panda/src/cocoadisplay/cocoaGraphicsWindow.mm
index 0730500a87..00a625f29f 100644
--- a/panda/src/cocoadisplay/cocoaGraphicsWindow.mm
+++ b/panda/src/cocoadisplay/cocoaGraphicsWindow.mm
@@ -1270,7 +1270,11 @@ do_switch_fullscreen(CGDisplayModeRef mode) {
     // Switch back to the mode we were in when we were still windowed.
     CGDisplaySetDisplayMode(_display, _windowed_mode, NULL);
     CGDisplayModeRelease(_windowed_mode);
-    CGDisplayRelease(_display);
+    if (CGDisplayIsMain(_display)) {
+      CGReleaseAllDisplays();
+    } else {
+      CGDisplayRelease(_display);
+    }
     _windowed_mode = NULL;
     _context_needs_update = true;
 
@@ -1285,14 +1289,31 @@ do_switch_fullscreen(CGDisplayModeRef mode) {
     _fullscreen_mode = mode;
     _context_needs_update = true;
 
+    // Display must be captured by the application before switching mode.
+    // If not, the change of mode and resolution will be applied on all the other applications,
+    // although they are no longer visible.
+    // This also leads to weird bugs when switching back to the desktop mode.
     CGError err;
-    err = CGDisplaySetDisplayMode(_display, _fullscreen_mode, NULL);
-
+    if (CGDisplayIsMain(_display)) {
+      // In multidisplay setup, all the displays must be captured or the switch will be notified anyway.
+      err = CGCaptureAllDisplays();
+    } else {
+      err = CGDisplayCapture(_display);
+    }
     if (err != kCGErrorSuccess) {
       return false;
     }
 
-    CGDisplayCapture(_display);
+    err = CGDisplaySetDisplayMode(_display, _fullscreen_mode, NULL);
+
+    if (err != kCGErrorSuccess) {
+      if (CGDisplayIsMain(_display)) {
+        CGReleaseAllDisplays();
+      } else {
+        CGDisplayRelease(_display);
+      }
+      return false;
+    }
 
     NSRect frame = [[[_view window] screen] frame];
     if (cocoadisplay_cat.is_debug()) {
diff --git a/panda/src/display/graphicsStateGuardian.cxx b/panda/src/display/graphicsStateGuardian.cxx
index 0a88529cbe..795579fbc9 100644
--- a/panda/src/display/graphicsStateGuardian.cxx
+++ b/panda/src/display/graphicsStateGuardian.cxx
@@ -3659,7 +3659,7 @@ ensure_generated_shader(const RenderState *state) {
       if (!_supports_basic_shaders) {
         return;
       }
-      _shader_generator = new ShaderGenerator(this);
+      _shader_generator = new ShaderGenerator(_shader_caps, _supports_shadow_filter);
     }
     if (state->_generated_shader == nullptr ||
         state->_generated_shader_seq != _generated_shader_seq) {
diff --git a/panda/src/pgraphnodes/shaderGenerator.cxx b/panda/src/pgraphnodes/shaderGenerator.cxx
index d19fb1f967..260e687a8a 100644
--- a/panda/src/pgraphnodes/shaderGenerator.cxx
+++ b/panda/src/pgraphnodes/shaderGenerator.cxx
@@ -73,13 +73,33 @@ pack_combine(TextureStage::CombineSource src0, TextureStage::CombineOperand op0,
 static PStatCollector lookup_collector("*:Munge:ShaderGen:Lookup");
 static PStatCollector synthesize_collector("*:Munge:ShaderGen:Synthesize");
 
+/**
+ * Create a ShaderGenerator.  This has no state, except possibly to cache
+ * certain results.  The given parameters contain information about the
+ * capabilities of the target for which the shader will be compiled.
+ */
+ShaderGenerator::
+ShaderGenerator(const Shader::ShaderCaps &caps, bool use_shadow_filter) :
+  _use_shadow_filter(use_shadow_filter) {
+
+#ifdef _WIN32
+  // Check matches all OpenGL profiles
+  _use_generic_attr = (caps._active_vprofile <= 6151 || caps._active_vprofile >= 7000);
+#else
+  _use_generic_attr = true;
+#endif
+
+  // Matches gp5fp and glslf profiles
+  _use_pointcoord = (caps._active_fprofile == 7017 || caps._active_fprofile == 7008);
+}
+
 /**
  * Create a ShaderGenerator.  This has no state, except possibly to cache
  * certain results.  The parameter that must be passed is the GSG to which the
  * shader generator belongs.
  */
 ShaderGenerator::
-ShaderGenerator(const GraphicsStateGuardianBase *gsg) {
+ShaderGenerator(const GraphicsStateGuardianBase *gsg) : _use_pointcoord(false) {
   // The ATTR# input semantics seem to map to generic vertex attributes in
   // both arbvp1 and glslv, which behave more consistently.  However, they
   // don't exist in Direct3D 9.  Use this silly little check for now.
@@ -717,6 +737,7 @@ synthesize_shader(const RenderState *rs, const GeomVertexAnimationSpec &anim) {
   const char *eye_position_freg = nullptr;
   const char *eye_normal_freg = nullptr;
   const char *hpos_freg = nullptr;
+  const char *pointcoord_freg = nullptr;
 
   const char *position_vreg;
   const char *transform_weight_vreg = nullptr;
@@ -762,6 +783,7 @@ synthesize_shader(const RenderState *rs, const GeomVertexAnimationSpec &anim) {
   bool need_eye_normal = !key._lights.empty() || ((key._outputs & AuxBitplaneAttrib::ABO_aux_normal) != 0);
   bool need_tangents = ((key._texture_flags & ShaderKey::TF_map_normal) != 0);
   bool need_point_size = (key._fog_mode & 0x10000) != 0;
+  bool need_point_coord = false;
 
   // If we have binormal/tangent and eye position, we can pack eye normal in
   // the w channels of the others.
@@ -817,6 +839,9 @@ synthesize_shader(const RenderState *rs, const GeomVertexAnimationSpec &anim) {
     case TexGenAttrib::M_eye_position:
       need_eye_position = true;
       break;
+    case TexGenAttrib::M_point_sprite:
+      need_point_coord = true;
+      break;
     default:
       break;
     }
@@ -947,6 +972,13 @@ synthesize_shader(const RenderState *rs, const GeomVertexAnimationSpec &anim) {
     text << "\t uniform float3 attr_pointparams,\n";
     text << "\t out float l_point_size : PSIZE,\n";
   }
+  if (need_point_coord && !_use_pointcoord) {
+    if (!need_point_size) {
+      text << "\t uniform float3 attr_pointparams,\n";
+    }
+    pointcoord_freg = alloc_freg();
+    text << "\t out float3 l_pointcoord : " << pointcoord_freg << ",\n";
+  }
   text << "\t in float4 vtx_position : " << position_vreg << ",\n";
   text << "\t out float4 l_position : POSITION,\n";
   text << "\t uniform float4x4 mat_modelproj\n";
@@ -996,6 +1028,14 @@ synthesize_shader(const RenderState *rs, const GeomVertexAnimationSpec &anim) {
   if (need_point_size) {
     text << "\t l_point_size = attr_pointparams.y + attr_pointparams.z / length(l_eye_position.xyz);\n";
   }
+  if (need_point_coord && !_use_pointcoord) {
+    if (need_point_size) {
+      text << "\t l_pointcoord = float3(l_position.xy / (2.0f * l_position.w) + float2(0.5f, 0.5f), 1.0f / l_point_size);\n";
+    } else {
+      // Static point size (non-perspective points)
+      text << "\t l_pointcoord = float3(l_position.xy / (2.0f * l_position.w) + float2(0.5f, 0.5f), 1.0f / attr_pointparams.x);\n";
+    }
+  }
 
   pmap<const InternalName *, const char *>::const_iterator it;
   for (it = texcoord_fregs.begin(); it != texcoord_fregs.end(); ++it) {
@@ -1047,6 +1087,17 @@ synthesize_shader(const RenderState *rs, const GeomVertexAnimationSpec &anim) {
     text << "\t in uniform float4 attr_fog,\n";
     text << "\t in uniform float4 attr_fogcolor,\n";
   }
+  if (need_point_coord) {
+    if (_use_pointcoord) {
+      // In OpenGL, we have point coordinates available in glslf and gp5fp.
+      text << "\t in float2 l_pointcoord : POINTCOORD,\n";
+    } else {
+      // In DirectX 9, we need to calculate them from the fragment coordinates.
+      text << "\t in float3 l_pointcoord : " << pointcoord_freg << ",\n";
+      text << "\t in float2 l_fragcoord : WPOS,\n";
+      text << "\t in uniform float2 sys_windowsize,\n";
+    }
+  }
   if (need_world_position) {
     text << "\t in float4 l_world_position : " << world_position_freg << ",\n";
   }
@@ -1207,6 +1258,16 @@ synthesize_shader(const RenderState *rs, const GeomVertexAnimationSpec &anim) {
     case TexGenAttrib::M_eye_position:
       text << "\t float4 texcoord" << i << " = float4(l_eye_position.xyz, 1.0f);\n";
       break;
+    case TexGenAttrib::M_point_sprite:
+      if (_use_pointcoord) {
+        text << "\t float4 texcoord" << i << " = float4(l_pointcoord, 0.0f, 1.0f);\n";
+      } else {
+        if (!_use_generic_attr) {
+          text << "\t l_fragcoord.y = sys_windowsize.y - l_fragcoord.y;\n";
+        }
+        text << "\t float4 texcoord" << i << " = float4((l_fragcoord - l_pointcoord.xy * sys_windowsize) * l_pointcoord.z * float2(1.0f, -1.0f) - float2(0.5f, 0.5f), 0.0f, 1.0f);\n";
+      }
+      break;
     case TexGenAttrib::M_constant:
       text << "\t float4 texcoord" << i << " = texconst_" << i << ";\n";
       break;
diff --git a/panda/src/pgraphnodes/shaderGenerator.h b/panda/src/pgraphnodes/shaderGenerator.h
index a41445d7ca..f23fe3b315 100644
--- a/panda/src/pgraphnodes/shaderGenerator.h
+++ b/panda/src/pgraphnodes/shaderGenerator.h
@@ -64,6 +64,9 @@ class GeomVertexAnimationSpec;
  *
  */
 class EXPCL_PANDA_PGRAPHNODES ShaderGenerator : public TypedReferenceCount {
+public:
+  ShaderGenerator(const Shader::ShaderCaps &caps, bool use_shadow_filter);
+
 PUBLISHED:
   ShaderGenerator(const GraphicsStateGuardianBase *gsg);
   virtual ~ShaderGenerator();
@@ -76,7 +79,8 @@ PUBLISHED:
 protected:
   // Shader register allocation:
 
-  bool _use_generic_attr;
+  bool _use_generic_attr : 1;
+  bool _use_pointcoord : 1;
   int _vcregs_used;
   int _fcregs_used;
   int _vtregs_used;
diff --git a/panda/src/vision/arToolKit.cxx b/panda/src/vision/arToolKit.cxx
index ed7d019680..cf328a2afd 100644
--- a/panda/src/vision/arToolKit.cxx
+++ b/panda/src/vision/arToolKit.cxx
@@ -475,7 +475,7 @@ analyze(Texture *tex, bool do_flip_texture) {
     }
   }
 
-  delete data;
+  delete[] data;
 }
 
 #endif // HAVE_ARTOOLKIT