diff --git a/src/abr.cpp b/src/abr.cpp
index c268c73..3e7737f 100644
--- a/src/abr.cpp
+++ b/src/abr.cpp
@@ -153,6 +153,42 @@ std::vector<std::shared_ptr<Brush>> ABR::compute_brushes(const std::string& path
             }
         }
 
+        if (p->value<Boolean>("useTipDynamics"))
+        {
+            // other properties 'brushProjection', 'minimumRoundness', 'roundnessDynamics', 'tiltScale'
+
+            auto jitter_size = p->get<Descriptor>("szVr");
+            if (jitter_size)
+            {
+                b->m_jitter_scale = jitter_size->value<UnitFloat>("jitter") * 0.01f;
+                // TODO: p->value<UnitFloat>("minimumDiameter") * 0.001f; // minimum size
+            }
+
+            auto jitter_angle = p->get<Descriptor>("angleDynamics");
+            if (jitter_angle)
+            {
+                auto mode = jitter_angle->value<Integer>("bVTy");
+                if (mode == 0)
+                {
+                    b->m_jitter_angle = jitter_angle->value<UnitFloat>("jitter") * 0.01f;
+                }
+                else if (mode == 5)
+                {
+                    b->m_jitter_angle = jitter_angle->value<UnitFloat>("jitter") * 0.01f;
+                    b->m_tip_angle_follow = true;
+                }
+                else if (mode == 6)
+                {
+                    b->m_jitter_angle = jitter_angle->value<UnitFloat>("jitter") * 0.01f;
+                    b->m_tip_angle_follow = true; // temporary use full direction
+                    // TODO: implement initial direction only
+                }
+            }
+
+            b->m_tip_randflipx = p->value<Boolean>("flipX");
+            b->m_tip_randflipy = p->value<Boolean>("flipY");
+        }
+
         std::vector<std::string> modes = {
             "normal",       // normal (not in Photoshop)
             "Mltp",         // multiply
diff --git a/src/app.cpp b/src/app.cpp
index 5f6ab5b..fc1764c 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -403,16 +403,16 @@ void App::init()
     LOG("GL vendor: %s", glGetString(GL_VENDOR));
     LOG("GL renderer: %s", glGetString(GL_RENDERER));
 
-    GLint n_exts;
-    glGetIntegerv(GL_NUM_EXTENSIONS, &n_exts);
-    for (int i = 0; i < n_exts; i++)
-    {
-        std::string ext = (const char*)glGetStringi(GL_EXTENSIONS, i);
-        //if (ext.find("debug") != std::string::npos)
-        {
-            LOG("%s", glGetStringi(GL_EXTENSIONS, i));
-        }
-    }
+    //GLint n_exts;
+    //glGetIntegerv(GL_NUM_EXTENSIONS, &n_exts);
+    //for (int i = 0; i < n_exts; i++)
+    //{
+    //    std::string ext = (const char*)glGetStringi(GL_EXTENSIONS, i);
+    //    //if (ext.find("debug") != std::string::npos)
+    //    {
+    //        LOG("%s", glGetStringi(GL_EXTENSIONS, i));
+    //    }
+    //}
 
     LOG("Screen Resolution: %dx%d", (int)width, (int)height);