create default paths on android

src/app.cpp

@@ -618,7 +618,6 @@ void App::update(float dt)
             if (dfbo != rfbo)
                 LOG("DIFFERENT FB");
 
-            glReadBuffer(GL_FRONT);
             glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
             {
                 std::lock_guard<std::mutex> lock(rec_mutex);

src/canvas.cpp

@@ -2719,7 +2719,7 @@ Layer::Snapshot Layer::snapshot()
 
         snap.image[i] = std::make_unique<uint8_t[]>(m_rtt[i].bytes());
 
-        glReadBuffer(GL_BACK);
+        //glReadBuffer(GL_BACK);
         m_rtt[i].bindFramebuffer();
         glm::vec2 box_sz = zw(m_dirty_box[i]) - xy(m_dirty_box[i]);
         glReadPixels(m_dirty_box[i].x, m_dirty_box[i].y, box_sz.x, box_sz.y, GL_RGBA, GL_UNSIGNED_BYTE, snap.image[i].get());