diff --git a/docs/changes.md b/docs/changes.md
index 9c851d6c6..798bd25cf 100644
--- a/docs/changes.md
+++ b/docs/changes.md
@@ -4,6 +4,7 @@
   * 增加graphic\_buffer，用于管理bitmap的内存。
   * 完善vgcanvas，兼容JZ\_GPU。
   * 完善darray，增加darray\_find\_all。
+  * lcd nanovg支持LCD旋转（感谢智明提供补丁）。
 
 > 如果有支持访问bitmap-\>data的代码，请使用bitmap\_lock\_buffer\_for\_write/read函数。
 
diff --git a/src/base/events.c b/src/base/events.c
index 35357571b..7357284df 100644
--- a/src/base/events.c
+++ b/src/base/events.c
@@ -76,8 +76,13 @@ ret_t pointer_event_rotate(pointer_event_t* evt, system_info_t* info) {
 
   switch (info->lcd_orientation) {
     case LCD_ORIENTATION_90: {
+#if WITH_NANOVG_GPU
+      evt->y = info->lcd_w - x - 1;
+      evt->x = y;
+#else  
       evt->y = x;
       evt->x = info->lcd_h - y - 1;
+#endif
       break;
     }
     case LCD_ORIENTATION_180: {
@@ -86,8 +91,13 @@ ret_t pointer_event_rotate(pointer_event_t* evt, system_info_t* info) {
       break;
     }
     case LCD_ORIENTATION_270: {
+#if WITH_NANOVG_GPU
+      evt->y = x;
+      evt->x = info->lcd_h - y - 1;
+#else 
       evt->y = info->lcd_w - x - 1;
       evt->x = y;
+#endif
       break;
     }
     default:
diff --git a/src/vgcanvas/vgcanvas_nanovg_gl.inc b/src/vgcanvas/vgcanvas_nanovg_gl.inc
index a1d82c642..0ec025731 100644
--- a/src/vgcanvas/vgcanvas_nanovg_gl.inc
+++ b/src/vgcanvas/vgcanvas_nanovg_gl.inc
@@ -9,13 +9,48 @@ static ret_t vgcanvas_nanovg_reinit(vgcanvas_t* vg, uint32_t w, uint32_t h, uint
 }
 
 static ret_t vgcanvas_nanovg_begin_frame(vgcanvas_t* vgcanvas, rect_t* dirty_rect) {
+  float_t angle = 0.0f;
+  float_t anchor_x = 0.0f;
+  float_t anchor_y = 0.0f;
+
+  system_info_t* info = system_info();
   vgcanvas_nanovg_t* canvas = (vgcanvas_nanovg_t*)vgcanvas;
 
-  native_window_info_t info;
-  return_value_if_fail(native_window_get_info(canvas->window, &info) == RET_OK, RET_BAD_PARAMS);
-
   native_window_gl_make_current(canvas->window);
-  nvgBeginFrame(canvas->vg, info.w, info.h, info.ratio);
+  
+  nvgBeginFrame(canvas->vg, info->lcd_w, info->lcd_h, info->device_pixel_ratio);
+
+  switch (info->lcd_orientation)
+  {
+    case LCD_ORIENTATION_0: 
+      angle = 0.0f;
+      break;
+    case LCD_ORIENTATION_90: 
+      angle = TK_D2R(90);
+      break;
+    case LCD_ORIENTATION_180: 
+      angle = TK_D2R(180);
+      break;
+    case LCD_ORIENTATION_270: 
+      angle = TK_D2R(270);
+      break;
+  }
+
+  anchor_x = info->lcd_w / 2.0f;
+  anchor_y = info->lcd_h / 2.0f;
+
+  nvgSave(canvas->vg);
+  
+  if(info->lcd_orientation == LCD_ORIENTATION_90 || info->lcd_orientation == LCD_ORIENTATION_270) {
+    nvgTranslate(canvas->vg, anchor_x, anchor_y);
+    nvgRotate(canvas->vg, angle);
+    nvgTranslate(canvas->vg, -anchor_y, -anchor_x);
+  }
+  else if(info->lcd_orientation == LCD_ORIENTATION_180) {
+    nvgTranslate(canvas->vg, anchor_x, anchor_y);
+    nvgRotate(canvas->vg, angle);
+    nvgTranslate(canvas->vg, -anchor_x, -anchor_y);
+  }
 
   return RET_OK;
 }
@@ -24,6 +59,7 @@ static ret_t vgcanvas_nanovg_end_frame(vgcanvas_t* vgcanvas) {
   vgcanvas_nanovg_t* canvas = (vgcanvas_nanovg_t*)vgcanvas;
   NVGcontext* vg = canvas->vg;
 
+  nvgRestore(vg);
   nvgEndFrame(vg);
   native_window_swap_buffer(canvas->window);
 
diff --git a/src/window_manager/window_manager_default.c b/src/window_manager/window_manager_default.c
index bcc192293..50b6a4fef 100644
--- a/src/window_manager/window_manager_default.c
+++ b/src/window_manager/window_manager_default.c
@@ -162,10 +162,8 @@ ret_t window_manager_default_snap_curr_window(widget_t* widget, widget_t* curr_w
   vg = lcd_get_vgcanvas(c->lcd);
   ENSURE(vgcanvas_create_fbo(vg, fbo) == RET_OK);
   ENSURE(vgcanvas_bind_fbo(vg, fbo) == RET_OK);
-  ENSURE(canvas_begin_frame(c, NULL, LCD_DRAW_OFFLINE) == RET_OK);
   ENSURE(widget_on_paint_background(widget, c) == RET_OK);
   ENSURE(widget_paint(curr_win, c) == RET_OK);
-  ENSURE(canvas_end_frame(c) == RET_OK);
   ENSURE(vgcanvas_unbind_fbo(vg, fbo) == RET_OK);
   fbo_to_img(fbo, img);
 #else
@@ -203,7 +201,6 @@ ret_t window_manager_default_snap_prev_window(widget_t* widget, widget_t* prev_w
   vg = lcd_get_vgcanvas(c->lcd);
   ENSURE(vgcanvas_create_fbo(vg, fbo) == RET_OK);
   ENSURE(vgcanvas_bind_fbo(vg, fbo) == RET_OK);
-  ENSURE(canvas_begin_frame(c, NULL, LCD_DRAW_OFFLINE) == RET_OK);
   ENSURE(widget_on_paint_background(widget, c) == RET_OK);
   window_manager_paint_system_bar(widget, c);
   ENSURE(widget_paint(prev_win, c) == RET_OK);
@@ -211,7 +208,6 @@ ret_t window_manager_default_snap_prev_window(widget_t* widget, widget_t* prev_w
   if (dialog_highlighter != NULL) {
     dialog_highlighter_prepare(dialog_highlighter, c);
   }
-  ENSURE(canvas_end_frame(c) == RET_OK);
   ENSURE(vgcanvas_unbind_fbo(vg, fbo) == RET_OK);
   fbo_to_img(fbo, img);
 #else