run int render thread

Samples/UIWidgetsSamples_2019_4/Assets/ANT.cs

           var texEx =  Texture2D.CreateExternalTexture(width, height, TextureFormat.BGRA32, false, true, ptr);
           GetComponent<Renderer>().material.mainTexture = texEx;
        }
-       GL.IssuePluginEvent(GetRenderEventFunc(), 1);  
+       // GL.IssuePluginEvent(GetRenderEventFunc(), 1);  
 // #endif
     }
 
             // Wait until all frame rendering is done
             yield return new WaitForEndOfFrame();
 #if !UNITY_EDITOR
-            // GL.IssuePluginEvent(GetRenderEventFunc(), 1);    
-            draw_xxx();
+            GL.IssuePluginEvent(GetRenderEventFunc(), 1);    
+            // draw_xxx();
 #endif
         }
     }

engine/src/shell/platform/unity/android/unity_surface_manager.cc

     egl_context_s_old = eglGetCurrentContext(); //????? for get context
 
     egl_context_s = eglCreateContext(egl_display_s, egl_config_s, egl_context_s_old, attributes);
-    auto read = eglGetCurrentSurface(EGL_READ);
-    auto draw = eglGetCurrentSurface(EGL_DRAW);
-    auto state = eglMakeCurrent(egl_display_s, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context_s) == GL_TRUE;
-    unsigned int texture;
-    glGenTextures(1, &texture);
-    glBindTexture(GL_TEXTURE_2D, texture);
-    int rowPitch = wi * 4;
-    unsigned char *data = new unsigned char[rowPitch * he];
+    // auto read = eglGetCurrentSurface(EGL_READ);
+    // auto draw = eglGetCurrentSurface(EGL_DRAW);
+    // auto state = eglMakeCurrent(egl_display_s, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context_s) == GL_TRUE;
+    // unsigned int texture;
+    // glGenTextures(1, &texture);
+    // glBindTexture(GL_TEXTURE_2D, texture);
+    // int rowPitch = wi * 4;
+    // unsigned char *data = new unsigned char[rowPitch * he];
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, wi, he, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
-    state = glGetError();
+    // glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, wi, he, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
+    // state = glGetError();
-    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
-    state = glGetError();
-    state = eglMakeCurrent(egl_display_s, draw, read, egl_context_s_old) == GL_TRUE;
+    // glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
+    // state = glGetError();
+    // state = eglMakeCurrent(egl_display_s, draw, read, egl_context_s_old) == GL_TRUE;
   }
   void UnitySurfaceManager::drawxxx()
   {
       dst += rowPitch;
     }
     GLuint gltex = (GLuint)(size_t)(g_TextureHandle);
-    // auto read = eglGetCurrentSurface(EGL_READ);
-    // auto draw = eglGetCurrentSurface(EGL_DRAW);
+    auto read = eglGetCurrentSurface(EGL_READ);
+    auto draw = eglGetCurrentSurface(EGL_DRAW);
     auto state = eglMakeCurrent(egl_display_s, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context_s) == GL_TRUE;
     glBindTexture(GL_TEXTURE_2D, gltex);
 
-    state = eglMakeCurrent(egl_display_s, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context_s_old) == GL_TRUE;
+    state = eglMakeCurrent(egl_display_s, draw, read, egl_context_s_old) == GL_TRUE;
 
     delete[](unsigned char *) data;
   }